CN110512096A - A kind of fine fraction climb western ilmenite concentrate preparation can chlorination rich-titanium material method - Google Patents
A kind of fine fraction climb western ilmenite concentrate preparation can chlorination rich-titanium material method Download PDFInfo
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- CN110512096A CN110512096A CN201910886752.5A CN201910886752A CN110512096A CN 110512096 A CN110512096 A CN 110512096A CN 201910886752 A CN201910886752 A CN 201910886752A CN 110512096 A CN110512096 A CN 110512096A
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- 239000010936 titanium Substances 0.000 title claims abstract description 143
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 143
- 239000000463 material Substances 0.000 title claims abstract description 124
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000012141 concentrate Substances 0.000 title claims abstract description 71
- 238000005660 chlorination reaction Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000012298 atmosphere Substances 0.000 claims abstract description 38
- 239000000203 mixture Substances 0.000 claims abstract description 36
- 239000000047 product Substances 0.000 claims abstract description 32
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000011265 semifinished product Substances 0.000 claims abstract description 27
- 238000006722 reduction reaction Methods 0.000 claims abstract description 22
- 238000007885 magnetic separation Methods 0.000 claims abstract description 21
- 238000000498 ball milling Methods 0.000 claims abstract description 18
- 238000000926 separation method Methods 0.000 claims abstract description 18
- 239000002002 slurry Substances 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 15
- 239000000654 additive Substances 0.000 claims abstract description 13
- 230000000996 additive effect Effects 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 12
- 230000008018 melting Effects 0.000 claims abstract description 12
- 238000001953 recrystallisation Methods 0.000 claims abstract description 10
- 238000012216 screening Methods 0.000 claims abstract description 10
- 238000011049 filling Methods 0.000 claims abstract description 8
- 230000001590 oxidative effect Effects 0.000 claims abstract description 8
- 239000011230 binding agent Substances 0.000 claims abstract description 6
- 238000005453 pelletization Methods 0.000 claims description 55
- 239000008188 pellet Substances 0.000 claims description 30
- 239000000843 powder Substances 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 230000003647 oxidation Effects 0.000 claims description 18
- 238000007254 oxidation reaction Methods 0.000 claims description 18
- 230000009467 reduction Effects 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 14
- 239000013049 sediment Substances 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 12
- 238000002386 leaching Methods 0.000 claims description 11
- 238000001465 metallisation Methods 0.000 claims description 11
- 229910017082 Fe-Si Inorganic materials 0.000 claims description 10
- 229910017133 Fe—Si Inorganic materials 0.000 claims description 10
- 239000002802 bituminous coal Substances 0.000 claims description 10
- 239000011863 silicon-based powder Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 239000002006 petroleum coke Substances 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000003245 coal Substances 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 53
- 239000004408 titanium dioxide Substances 0.000 abstract description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 28
- 235000019580 granularity Nutrition 0.000 description 21
- 239000004615 ingredient Substances 0.000 description 18
- 235000010215 titanium dioxide Nutrition 0.000 description 16
- 229910052742 iron Inorganic materials 0.000 description 15
- 229910052799 carbon Inorganic materials 0.000 description 11
- 239000000686 essence Substances 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- 239000002893 slag Substances 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 6
- 239000012299 nitrogen atmosphere Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000000605 extraction Methods 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000009194 climbing Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000012452 mother liquor Substances 0.000 description 3
- 238000011946 reduction process Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910005451 FeTiO3 Inorganic materials 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/244—Binding; Briquetting ; Granulating with binders organic
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/10—Hydrochloric acid, other halogenated acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1236—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching
- C22B34/124—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching using acidic solutions or liquors
- C22B34/1245—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching using acidic solutions or liquors containing a halogen ion as active agent
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of fine fraction climb the preparation of western ilmenite concentrate can chlorination rich-titanium material method, comprising the following steps: fine fraction climbed to western ilmenite concentrate carries out after oxidizing roasting and carbonaceous reducing agent, additive and binder carry out die-filling after mix ball milling and suppress balling-up；Be heat-treated under an ar atmosphere again after carrying out reduction reaction, be then crushed, ball milling, after magnetic separation magnetic product and non magnetic slurry；Non magnetic slurries filtration is dried to obtain fine fraction rich-titanium material semi-finished product, using dilute hydrochloric acid carry out acidleach, by obtained fine fraction rich-titanium material carry out melting recrystallization, crushing and screening obtains can chlorination rich-titanium material.High-grade iron powder can be directly obtained after magnetic separation separation of the present invention, iron powder grade MFe is greater than 84%, can sell outside directly as product；Obtain can the grade of titanium dioxide of chlorination rich-titanium material be greater than 90%, by, it can be achieved that the granularity of fine fraction rich-titanium material remold, obtaining 60~140 mesh of rich-titanium material after melting recrystallization greater than 85%, satisfaction can chlorination rich-titanium material granularity requirements.
Description
Technical field
The present invention relates to metallurgical technology field, especially a kind of fine fraction climb the preparation of western ilmenite concentrate can chlorination rich-titanium material side
Method.
Background technique
Rich-titanium material refers generally to TiO2Content is not less than 75% titanium slag or synthetic rutile, is high-grade using chloridising production
The important source material of rutile type titanium white and titanium sponge, Titanium Dioxide Produced by Chloride Procedure is the raw material with titaniferous, with chlorination high titanium slag or people
It makes the rich-titanium materials such as rutile or natural rutile and chlorine reaction generates titanium tetrachloride and then carries out gas phase again through rectification and purification
Oxidation；After quickly cooling, TiO is obtained by gas solid separation2.Used in producing titanium tetrachloride t 5 bx can chlorination rich-titanium material should contain TiO2
85%-95%, impurity content is low as far as possible, and has suitable granularity.
China is titanium resource big country, climbs western vanadium titano-magnetite titanium resource reserves and ranks first in the world.But climb western v-ti magnetite
Ore resources belong to primary type rock mine type, are mainly characterized by: (1) big using difficulty, mostly lean ore, rich ore are few；(2) in titanium ore
Half a lifetime useful constituent is more, and sorting difficulty is big, and the rate of recovery is low, CaO, MgO, SiO2Equal impurity contents are high, fine size after sorting.It is difficult
With reach can chlorination rich-titanium material requirement, and be difficult to a kind of simple process, low cost be processed into can be with the rich titanium of chlorination
Material.It is meticulous to solve the problems, such as to climb western titanium ore granularity, and the main method mainly used at present is exactly that first ilmenite electro-smelting is obtained
To titanium slag, then it is crushed titanium slag and makes it have suitable size distribution, but non-ferrous impurities content is higher in titanium slag, also needs to remove
Miscellaneous upgrading processing can just obtain high-quality rich-titanium material；And titanium slag is a kind of very high substance of chemical stability, using direct hydrochloric acid
Leaching is difficult to remove impurity selective leaching therein, can only realize going for impurity by way of modified or improve acid concentration
Remove, the technical process there are the problem of be mainly: the too thin mine of granularity foamed slag easy to form during electric furnace smelting, influence
Furnace run；Electric furnace smelting energy consumption is higher, and smelting cost is higher；The acid concentration that acidleach process uses is excessively high, is difficult to realize circulation
The defects of utilization.
The main chemical compositions of the present invention for climbing western titanium ore of table 1
| Ingredient | TiO2 | FeO | Fe2O3 | MgO | SiO2 | MnO |
| Content/% | 46.0-52.0 | 35.0-38.0 | 4.5-5.0 | 3.5-5.0 | 0.6-1.2 | 0.5-1.0 |
| Ingredient | Al2O3 | CaO | V2O5 | S | Cr2O3 | P2O5 |
| Content/% | 0.3-0.6 | 0.2-0.5 | 0.1-0.5 | 0.05-0.10 | 0.05-0.08 | <0.005 |
For climbing the fine-graded ilmenite concentrate of western titanium ore, specific chemical composition is as shown in the table, and granularity is -200 mesh accountings
It is 70%~85%, since fine size can not be directly entered rotary kiln reduction or electric furnace smelting, it is necessary to can by pelletizing processing
It uses, in terms of phase structure, main phase structure is FeTiO3And the same phase structure of class matter that the impurity such as itself and MgO are formed,
More difficult reduction, and the metal abrasive grit granularity after reduction is thinner, the difficulty of subsequent magnetic separation separation is improved, so that the non-magnetic separation of part iron
It separates into non magnetic product, causes the waste of iron resource, and improve the mother liquor amount and the quantity of slag of acidleach process, after
Continuous mother liquid disposal difficulty is big, and obtained rich-titanium material and iron powder grade is low.Therefore, it needs a kind of suitable fine fraction and climbs western ilmenite concentrate system
It is standby can chlorination rich-titanium material method, improve the rate of recovery and grade of grade of titanium dioxide and iron.
Summary of the invention
Technical problem to be solved by the invention is to provide the rate of recovery and grade of a kind of raising grade of titanium dioxide and iron
Fine fraction climb the preparation of western ilmenite concentrate can chlorination rich-titanium material method.
The technical solution adopted by the present invention to solve the technical problems is: a kind of fine fraction climbs western ilmenite concentrate preparation can chlorination
The method of rich-titanium material, comprising the following steps:
(1) it pre-oxidizes: fine fraction being climbed into western ilmenite concentrate as raw material, is put into tube-type atmosphere furnace, in air atmosphere, control
Temperature processed is that 750~950 DEG C of 30~120min of progress oxidizing roasting obtain fine fraction oxidation ilmenite concentrate；
(2) preparation of carbonaceous pelletizing: fine fraction is aoxidized into ilmenite concentrate, carbonaceous reducing agent, additive and binder and is mixed
It closes 1~2h of ingredient ball milling and obtains mixture, resulting mixture is carried out die-filling and suppress balling-up, at a temperature of 100~200 DEG C
Dry 10~60min obtains dry carbonaceous pelletizing；Wherein the additive amount of carbonaceous reducing agent is 1.1~2 ﹕ 1 according to C/O molar ratio
Addition；
(3) preparation of metallized pellet: tube-type atmosphere furnace is added in inert gas in the carbonaceous pelletizing that step (2) is obtained
To be heated to 1000~1300 DEG C of progress high temperature reductions under the heating rate of 1~10 DEG C/min under atmosphere, and keep the temperature 10~
200min carries out reduction reaction, obtains metallic pellet；
(4) metallized pellet is heat-treated: the metallized pellet that step (3) is obtained is under an ar atmosphere at 1300~1380 DEG C
At a temperature of carry out 1~5h of heat treatment, obtain heat treatment pelletizing；
(5) the heat treatment pelletizing for obtaining step (4) is broken, ball milling, after magnetic separation magnetic product and non magnetic slurry；
(6) the non magnetic slurries filtration that step (5) obtains is dried to obtain fine fraction rich-titanium material semi-finished product, using dilute hydrochloric acid
Acidleach is carried out to fine fraction rich-titanium material semi-finished product, obtains fine fraction rich-titanium material and leachate；Reduction is dried to obtain in magnetic product
Iron powder；
(7) electric furnace is added in the fine fraction rich-titanium material for obtaining step (6), carries out melting recrystallization to fine fraction rich-titanium material,
Recrystallized product crushing and screening is obtained can chlorination rich-titanium material.
Since fine size can not be directly entered rotary kiln reduction or electric furnace smelting, it is necessary to handling by pelletizing can use,
In terms of phase structure, it is FeTiO that the fine fraction that the present invention selects, which climbs the main phase structure of western ilmenite concentrate,3And itself and MgO etc.
The same phase structure of class matter that impurity is formed, it is more difficult to restore, by carrying out pre-oxidation treatment at a temperature of 750~950 DEG C, destroy titanium essence
Mine original structure makes ilmenite concentrate phase structure be oxidized to simple rutile TiO2And bloodstone, it forms and more easily restores
Structure, conducive to the progress of subsequent reduction reaction.
Fine fraction oxidation ilmenite concentrate after pre-oxidation is subjected to mix with carbonaceous reducing agent, additive and binder,
Si/Al matter additive is added, releases heat in reduction process kind, suppresses pelletizing, fill carbonaceous reducing agent, additive and miberal powder relatively
The contact divided, can strengthen reduction reaction, and promotion in the next steps restores the ferro element in ilmenite concentrate.
Metal abrasive grit granularity after reduction is thinner, the difficulty of subsequent magnetic separation separation is improved, by existing under an ar atmosphere
1~5h of heat treatment is carried out at a temperature of 1300~1380 DEG C, tiny metal abrasive grit agglomeration after reduction promotes subsequent magnetic separation point
From.For ilmenite concentrate in reduction process, the ferro element overwhelming majority therein is reduced into iron granule, but is adhered to mineral grain
On, by being further crushed, ball milling, so that metallic iron and minerals separation, thus by magnetic separation by most of metallic iron magnetic separation
It separates.Common inert gas is Ar, and cost is relatively low, and Ar gas will not react influence rich-titanium material purity with raw material.
By pre-oxidation, ilmenite concentrate reduction and heat treatment, magnetic separation, most iron are gone back in ilmenite concentrate
Magnetic separation is separated after original, uses mass concentration that titanium grade can be obtained 90% or more for 10~18% dilute hydrochloric acid acidleach
High-quality can chlorination rich-titanium material the circulation of hydrochloric acid may be implemented after mother liquor after acidleach is using the regeneration of Lu Sina furnace regeneration techniques
It uses；And the concentration of hydrochloric acid after the regeneration of Lu Sina furnace regeneration techniques is not higher than 18%, to obtain in the prior art more high-grade
Can chlorination rich-titanium material, need the concentrated hydrochloric acid using 25% or more, therefore to need to again to the mother liquid recycling after acidleach
Raw hydrochloric acid improves concentration, improves the processing difficulty of mother liquor.
Further, the fine fraction climbs TiO in western ilmenite concentrate2Content 42~50%, granularity are that -200 mesh account for 70%
~85%.
Further, the additive selects Fe-Si powder or Al powder, and additive additional amount is that fine fraction aoxidizes ilmenite concentrate
0.5~2wt%.
Further, one or more of graphite, petroleum coke, coal or bituminous coal can be selected in the carbonaceous reducing agent.
Further, it is broken will to be heat-treated pelletizing for step (5), and in N2Under atmosphere plus deionized water carries out mixing and ball milling
1~5h, the mineral granularity after making heat treatment are controlled at 10~100 μm, and metallization ilmenite concentrate powder is then obtained by filtration；It will metallization
Ilmenite concentrate powder carries out magnetic separation separation under the magnetic field strength of 100~800mT, obtains magnetic product and non magnetic slurry.
Further, the pressure of step (2) compacting balling-up is 10~25MPa.
Further, the mass concentration of dilute hydrochloric acid is 10~18% in the step (6), dilute hydrochloric acid and fine fraction rich-titanium material
The liquid-solid ratio of semi-finished product is 1.5~4.5:1, and acidleach temperature is 60~110 DEG C, and leaching time is 1~8h.
Further, filtration washing obtains sediment after the acidleach, by sediment dry 1 at a temperature of 80~150 DEG C
~5h obtains fine fraction rich-titanium material.Filtrated stock can be recycled, and can be used for producing cement after the waste residue roasting of generation, both
Production cost is reduced, and reduces the pollution of waste liquid, waste residue to environment.
Further, fine fraction rich-titanium material addition electric furnace is melted 1 at a temperature of 1550~1700 DEG C in the step (7)
~8h, then recrystallized product is obtained to fusant water-spraying control, then obtaining recrystallized product crushing and screening can chlorination rich-titanium material.Carefully
The compact massive rich-titanium material obtained after the melting of grade rich-titanium material, cooling.Rich-titanium material block is monolith solid solution made of recrystallizing,
And quenching process of spraying water can also make the rich-titanium material Crystallization defect of preparation, and it is easily broken, but a large amount of dusting are not, from
And obtain granularity it is controllable can chlorination rich-titanium material.
Further, the binder selects instant dissolving glue powder.
The beneficial effects of the present invention are: the present invention pre-oxidizes by climbing western ilmenite concentrate to fine fraction, adds additive
And reducing agent obtains higher degree of metalization in the solid state by ilmenite concentrate drastic reduction, the ferro element overwhelming majority becomes metal
Iron, other iron essences also become low price iron, by being heat-treated to the product after reduction, the metal iron particles after making reduction
It grows up, most of metallic iron is isolated in then finely ground and magnetic separation, and remaining partial impurities use mass concentration for 10~18%
Dilute hydrochloric acid can Ore Leaching；
By being conducive to reduction process with addition Fe-Si or Al powder after pre-oxidation treatment, reduzate degree of metalization is obtained
It is higher, while by being heat-treated metallized pellet so that iron particle is further grown up, improve mill select separative efficiency and titanium and
Iron recovery can directly obtain high-grade iron powder after magnetic separation separation, and iron powder grade MFe is greater than 84%, can be directly as product outside
It sells；Obtain can chlorination rich-titanium material grade of titanium dioxide be greater than 90%, by after melting recrystallization, it can be achieved that fine fraction rich-titanium material
Granularity remodeling, obtain 60~140 mesh of rich-titanium material greater than 85%, meet can chlorination rich-titanium material granularity requirements.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Embodiment 1:
As shown in Figure 1, a kind of fine fraction climb the preparation of western ilmenite concentrate can chlorination rich-titanium material method, include the following steps:
(1) fine fraction climbs western ilmenite concentrate pre-oxidation: by TiO2 content 42%, the fine fraction that -200 mesh are 85% climbs western titanium essence
Mine is put into atmosphere tube type furnace as raw material, in air atmosphere, in 750 DEG C of progress oxidizing roasting 30min, obtains fine fraction
Aoxidize ilmenite concentrate；
(2) configuration of carbonaceous pelletizing: the fine fraction oxidation ilmenite concentrate that step (1) is obtained is raw material, with addition of 2wt%Fe-
The bituminous coal of Si powder and fixed carbon content 50.14wt% are reducing agent, carry out ingredient mixing, wherein mixed carbon comtent is according to C/O molar ratio
Ingredient is carried out for 1.3, fine fraction is weighed respectively and climbs western ilmenite concentrate 100g, Fe-Si powder 2g and petroleum coke 19.1g and mix and match
Material, wherein mix uses ball milling 1.4h, obtains mixture；
(3) preparation of carbonaceous pelletizing: step (2) is obtained into carbon containing mixture and carries out die-filling and is suppressed under 15MPa pressure
Balling-up, dry 20min obtains dry carbonaceous pelletizing at a temperature of 140 DEG C；
(4) preparation of metallized pellet: the carbonaceous pelletizing that step (3) obtains is placed in graphite crucible, atmosphere is transferred to
Tube furnace, in N2Protected under atmosphere, at a temperature of being heated to 1000 DEG C under the heating rate of 5 DEG C/min heat preservation 40min into
Row reduction, obtains metallic pellet；
(5) metallized pellet is heat-treated: the metallized pellet that step (4) obtains being heat-treated under an ar atmosphere, In
3h is handled at 1300 DEG C, obtains heat treatment pelletizing；
(6) mill for being heat-treated pelletizing selects separation: it is broken that step (5) is obtained heat treatment pelletizing, and under N2 atmosphere with addition of
A certain amount of deionized water carries out mixing and ball milling 1h, the metallization titanium ore powder of -80 μm of granularities is obtained, then in the magnetic field of 500mT
Magnetic separation separation is carried out under intensity, obtains magnetic product and non magnetic slurry, magnetic product is dried to obtain reduced iron powder, it is non-
Magnetic slurry filtration drying obtains fine fraction rich-titanium material semi-finished product；
(7) step (6) leaching of fine fraction rich-titanium material semi-finished product: is obtained into fine fraction rich-titanium material semi-finished product at 90 DEG C of normal pressure
At a temperature of, using the progress acidleach processing of 12% dilute hydrochloric acid, the liquid-solid ratio of dilute hydrochloric acid and fine fraction rich-titanium material semi-finished product is 2.5:1,
Extraction time is then 4h obtains sediment filtration washing 2 times, and sediment is dried to obtain fine fraction rich-titanium material at 100 DEG C；
(8) melt pelletization of fine fraction rich-titanium material: electric furnace is added in the fine fraction rich-titanium material that step (7) is obtained, 1550
The melting recrystallization that fine fraction rich-titanium material is realized under DEG C high temperature, by recrystallized product crushing and screening obtain granulometric composition it is qualified can
Chlorination rich-titanium material.
Through detecting, gained can chlorination rich-titanium material TiO2Grade be 91.07%, CaO:0.10%, MgO:0.12%, 60~
140 mesh granularities account for 86.07%, meet Titanium Dioxide Produced by Chloride Procedure ingredient requirement；Iron powder grade MFe:84.32%, TiO2:6.12%.
Embodiment 2:
A kind of fine fraction climb western ilmenite concentrate preparation can chlorination rich-titanium material method, include the following steps:
(1) fine fraction climbs western ilmenite concentrate pre-oxidation: by TiO2Content 50%, the fine fraction that -200 mesh are 75% climb western titanium essence
Mine is put into atmosphere tube type furnace as raw material, in air atmosphere, in 950 DEG C of progress oxidizing roasting 75min, obtains fine fraction
Aoxidize ilmenite concentrate；
(2) configuration of carbonaceous pelletizing: the fine fraction oxidation ilmenite concentrate that step (1) is obtained is raw material, with addition of 0.5wt%
The bituminous coal of Fe-Si powder and fixed carbon content 54.14wt% are reducing agent, carry out ingredient mixing, wherein mixed carbon comtent is according to C/O moles
Than carrying out ingredient for 1.3, fine fraction is weighed respectively and climbs western ilmenite concentrate 100g, Al powder 0.5g and petroleum coke 20.4g and mix and is matched
Material, wherein mix uses ball milling 1h, obtains mixture；
(3) preparation of carbonaceous pelletizing: by step (2) obtain mixture carry out it is die-filling and be pressed into ball under 10MPa pressure,
Dry 60min obtains dry carbonaceous pelletizing at a temperature of 100 DEG C；
(4) preparation of metallized pellet: the carbonaceous pelletizing that step (3) obtains is placed in graphite crucible, atmosphere is transferred to
Tube furnace, in N2Protected under atmosphere, at a temperature of being heated to 1300 DEG C under the heating rate of 1 DEG C/min heat preservation 20min into
Row reduction, obtains metallic pellet；
(5) metallized pellet is heat-treated: the metallized pellet that step (4) obtains being heat-treated under an ar atmosphere, In
1h is handled at 1380 DEG C, obtains heat treatment pelletizing；
(6) mill for being heat-treated pelletizing selects separation: it is broken that step (5) is obtained heat treatment pelletizing, and in N2Under atmosphere with addition of
A certain amount of deionized water carries out the metallization ilmenite concentrate powder of -20 μm of granularities of mixing and ball milling 5h acquisition, then will metallization titanium essence
Miberal powder carries out magnetic separation separation under the magnetic field strength of 100mT, obtains magnetic product and non magnetic slurry, does to magnetic product
Dry to obtain reduced iron powder, non magnetic slurries filtration is dried to obtain fine fraction rich-titanium material semi-finished product；
(7) step (6) leaching of fine fraction rich-titanium material semi-finished product: is obtained into fine fraction rich-titanium material semi-finished product at 60 DEG C of normal pressure
At a temperature of, using the progress acidleach processing of 18% dilute hydrochloric acid, the liquid-solid ratio of dilute hydrochloric acid and fine fraction rich-titanium material semi-finished product is 4.5:1,
Extraction time is 1h, then obtains sediment filtration washing 2 times, sediment is dried to obtain fine fraction rich-titanium material at 80 DEG C；
(8) melt pelletization of fine fraction rich-titanium material: electric furnace is added in the fine fraction rich-titanium material that step (7) is obtained, 1700
The melting recrystallization that fine fraction rich-titanium material is realized under DEG C high temperature, by recrystallized product crushing and screening obtain granulometric composition it is qualified can
Chlorination rich-titanium material.
Through detecting, gained can chlorination rich-titanium material TiO2Grade be 90.37%, CaO:0.17%, MgO:0.21%, 60~
140 mesh granularities account for 85.56%, meet Titanium Dioxide Produced by Chloride Procedure ingredient requirement；Iron powder grade MFe:85.42%, TiO2:5.87%.
Embodiment 3:
A kind of fine fraction climb western ilmenite concentrate preparation can chlorination rich-titanium material method, include the following steps:
(1) fine fraction climbs western ilmenite concentrate pre-oxidation: by TiO2Content 45%, the fine fraction that -200 mesh are 80% climb western titanium essence
Mine is put into atmosphere tube type furnace as raw material, in air atmosphere, in 850 DEG C of progress oxidizing roasting 120min, obtains fine fraction
Aoxidize ilmenite concentrate；
(2) configuration of carbonaceous pelletizing: the fine fraction oxidation ilmenite concentrate that step (1) is obtained is raw material, with addition of 1.25wt%
The bituminous coal of Fe-Si powder and fixed carbon content 55.23wt% are reducing agent, carry out ingredient mixing, wherein mixed carbon comtent is according to C/O moles
Than carrying out ingredient for 1.1, fine fraction is weighed respectively and climbs western ilmenite concentrate 100g, Al powder 1.25g and bituminous coal 14.7g and mix and is matched
Material, wherein mix uses ball milling 2h, obtains mixture；
(3) preparation of carbonaceous pelletizing: by step (2) obtain mixture mixture carry out it is die-filling and 25MPa pressure push
Ball is made, dry 10min obtains dry carbonaceous pelletizing at a temperature of 200 DEG C；
(4) preparation of metallized pellet: the carbonaceous pelletizing that step (3) obtains is placed in graphite crucible, atmosphere is transferred to
Tube furnace is protected under N2 atmosphere, is heated to keep the temperature 100min at a temperature of 1200 DEG C under the heating rate of 10 DEG C/min
It is restored, obtains metallic pellet；
(5) metallized pellet is heat-treated: the metallized pellet that step (4) obtains being heat-treated under an ar atmosphere, In
5h is handled at 1340 DEG C, obtains heat treatment pelletizing；
(6) mill for being heat-treated pelletizing selects separation: it is broken that step (5) is obtained heat treatment pelletizing, and in N2Under atmosphere with addition of
A certain amount of deionized water carries out mixing and ball milling 3h, obtains the metallization titanium ore powder of -50 μm of granularities；Then will metallize ilmenite concentrate
Powder carries out magnetic separation separation under the magnetic field strength of 800mT, obtains magnetic product and non magnetic slurry, magnetic product is dried
Reduced iron powder is obtained, non magnetic slurries filtration is dried to obtain fine fraction rich-titanium material semi-finished product；
(7) step (6) leaching of fine fraction rich-titanium material semi-finished product: is obtained into fine fraction rich-titanium material semi-finished product in normal pressure 110
At a temperature of DEG C, using the progress acidleach processing of 10% dilute hydrochloric acid, the liquid-solid ratio of dilute hydrochloric acid and fine fraction rich-titanium material semi-finished product is 3:1,
Extraction time is then 8h obtains sediment filtration washing 3 times, and sediment is dried to obtain fine fraction rich-titanium material at 150 DEG C；
(8) melt pelletization of fine fraction rich-titanium material: electric furnace is added in the fine fraction rich-titanium material that step (7) is obtained, 1650
The melting recrystallization that fine fraction rich-titanium material is realized under DEG C high temperature, by recrystallized product crushing and screening obtain granulometric composition it is qualified can
Chlorination rich-titanium material.
Through detecting, gained can chlorination rich-titanium material TiO2Grade be 90.45%, CaO:0.16%, MgO:0.15%, 60~
140 mesh granularities account for 86.15%, meet Titanium Dioxide Produced by Chloride Procedure ingredient requirement；Iron powder grade MFe:84.57%, TiO2:6.89%.
Embodiment 4
A kind of fine fraction climb western ilmenite concentrate preparation can chlorination rich-titanium material method, include the following steps:
(1) fine fraction climbs western ilmenite concentrate pre-oxidation: by TiO2Content 48%, the fine fraction that -200 mesh are 75% climb western titanium essence
Mine is put into atmosphere tube type furnace as raw material, in air atmosphere, in 800 DEG C of progress oxidizing roasting 80min, obtains fine fraction
Aoxidize ilmenite concentrate；
(2) configuration of carbonaceous pelletizing: the fine fraction oxidation ilmenite concentrate that step (1) is obtained is raw material, with addition of 1.0wt%
The bituminous coal of Fe-Si powder and fixed carbon content 58.33wt% are reducing agent, carry out ingredient mixing, wherein mixed carbon comtent is according to C/O moles
Than carrying out ingredient for 2.0, fine fraction is weighed respectively and climbs western ilmenite concentrate 100g, Fe-Si powder 1.0g and bituminous coal 25.4g and mix and is matched
Material, wherein mix uses ball milling 1.5h, obtains mixture；
(3) preparation of carbonaceous pelletizing: by step (2) obtain mixture mixture carry out it is die-filling and 20MPa pressure push
Ball is made, dry 30min obtains dry carbonaceous pelletizing at a temperature of 180 DEG C；
(4) preparation of metallized pellet: the carbonaceous pelletizing that step (3) obtains is placed in graphite crucible, atmosphere is transferred to
Tube furnace is protected under N2 atmosphere, and heat preservation 10min is carried out at a temperature of 1300 DEG C are heated under the heating rate of 5 DEG C/min
Reduction, obtains metallic pellet；
(5) metallized pellet is heat-treated: the metallized pellet that step (4) obtains being heat-treated under an ar atmosphere, In
1h is handled at 1300 DEG C, obtains heat treatment pelletizing；
(6) mill for being heat-treated pelletizing selects separation: it is broken that step (5) is obtained heat treatment pelletizing, and under N2 atmosphere with addition of
A certain amount of deionized water carries out mixing and ball milling 3h, obtains the metallization titanium ore powder of -50 μm of granularities；Then will metallize ilmenite concentrate
Powder carries out magnetic separation separation under the magnetic field strength of 400mT, obtains magnetic product and non magnetic slurry, magnetic product is dried
Reduced iron powder is obtained, non magnetic slurries filtration is dried to obtain fine fraction rich-titanium material semi-finished product；
(7) step (6) leaching of fine fraction rich-titanium material semi-finished product: is obtained into fine fraction rich-titanium material semi-finished product in normal pressure 100
At a temperature of DEG C, acidleach processing is carried out using 14% dilute hydrochloric acid, the liquid-solid ratio of dilute hydrochloric acid and fine fraction rich-titanium material semi-finished product is 1.5:
1, extraction time is then 4.5h obtains sediment filtration washing 2 times, and sediment is dried to obtain fine fraction richness titanium at 120 DEG C
Material；
(8) melt pelletization of fine fraction rich-titanium material: electric furnace is added in the fine fraction rich-titanium material that step (7) is obtained, 1650
The melting recrystallization that fine fraction rich-titanium material is realized under DEG C high temperature, by recrystallized product crushing and screening obtain granulometric composition it is qualified can
Chlorination rich-titanium material.
Through detecting, gained can chlorination rich-titanium material TiO2Grade be 91.81%, CaO:0.17%, MgO:0.13%, 60~
140 mesh granularities account for 86.12%, meet Titanium Dioxide Produced by Chloride Procedure ingredient requirement；Iron powder grade MFe:86.55%, TiO2:6.04%.
Embodiment 5:
A kind of fine fraction climb western ilmenite concentrate preparation can chlorination rich-titanium material method, include the following steps:
(1) fine fraction climbs western ilmenite concentrate pre-oxidation: by TiO2Content 42%, the fine fraction that -200 mesh are 85% climb western titanium essence
Mine is put into atmosphere tube type furnace as raw material, in air atmosphere, in 850 DEG C of progress oxidizing roasting 100min, obtains fine fraction
Aoxidize ilmenite concentrate；
(2) configuration of carbonaceous pelletizing: the fine fraction oxidation ilmenite concentrate that step (1) is obtained is raw material, with addition of 1.5wt%
The bituminous coal of Fe-Si powder and fixed carbon content 58.33wt% are reducing agent, carry out ingredient mixing, wherein mixed carbon comtent is according to C/O moles
Than carrying out ingredient for 1.5, fine fraction is weighed respectively and climbs western ilmenite concentrate 100g, Fe-Si powder 1.5g and bituminous coal 19.0g and mix and is matched
Material, wherein mix uses ball milling 1.5h, obtains mixture；
(3) preparation of carbonaceous pelletizing: by step (2) obtain mixture mixture carry out it is die-filling and 25MPa pressure push
Ball is made, dry 35min obtains dry carbonaceous pelletizing at a temperature of 180 DEG C；
(4) prepared by metallized pellet: the carbonaceous pelletizing that step (3) obtains being placed in graphite crucible, atmosphere pipe is transferred to
Formula furnace is protected under N2 atmosphere, and heat preservation 55min is carried out at a temperature of 1100 DEG C are heated under the heating rate of 10 DEG C/min
Reduction, obtains metallic pellet；
(5) metallized pellet is heat-treated: the metallized pellet that step (4) obtains being heat-treated under an ar atmosphere, In
4h is handled at 1350 DEG C, obtains heat treatment pelletizing；
(6) mill for being heat-treated pelletizing selects separation: it is broken that step (5) is obtained heat treatment pelletizing, and under N2 atmosphere with addition of
A certain amount of deionized water carries out the metallization titanium ore powder of -80 μm of granularities of mixing and ball milling 1h acquisition, and then will metallize ilmenite concentrate
Powder carries out magnetic separation separation under the magnetic field strength of 400mT, obtains magnetic product and non magnetic slurry, magnetic product is dried
Reduced iron powder is obtained, non magnetic slurries filtration is dried to obtain fine fraction rich-titanium material semi-finished product；
(7) step (6) leaching of fine fraction rich-titanium material semi-finished product: is obtained into fine fraction rich-titanium material semi-finished product at 85 DEG C of normal pressure
At a temperature of, using the progress acidleach processing of 18% dilute hydrochloric acid, the liquid-solid ratio of dilute hydrochloric acid and fine fraction rich-titanium material semi-finished product is 3:1, leaching
The time is then 8h obtains sediment filtration washing 3 times out, and sediment is dried to obtain fine fraction rich-titanium material at 100 DEG C；
(8) melt pelletization of fine fraction rich-titanium material: electric furnace is added in the fine fraction rich-titanium material that step (7) is obtained, 1550
The melting recrystallization that fine fraction rich-titanium material is realized under DEG C high temperature, by recrystallized product crushing and screening obtain granulometric composition it is qualified can
Chlorination rich-titanium material.
Through detecting, gained can chlorination rich-titanium material TiO2Grade be 91.93%, CaO:0.09%, MgO:0.13%, 60~
140 mesh granularities account for 86.32%, meet Titanium Dioxide Produced by Chloride Procedure ingredient requirement；Iron powder grade MFe:86.87%, TiO2:5.43%.
Claims (10)
1. a kind of fine fraction climb the preparation of western ilmenite concentrate can chlorination rich-titanium material method, it is characterised in that: the following steps are included:
(1) it pre-oxidizes: fine fraction being climbed into western ilmenite concentrate as raw material, is put into tube-type atmosphere furnace, in air atmosphere, control temperature
Degree is that 750~950 DEG C of 30~120min of progress oxidizing roasting obtain fine fraction oxidation ilmenite concentrate；
(2) preparation of carbonaceous pelletizing: fine fraction is aoxidized ilmenite concentrate, carbonaceous reducing agent, additive and binder and mix and is matched
Pellet grinds 1~2h and obtains mixture, carries out die-filling by resulting mixture and suppresses balling-up, dry at a temperature of 100~200 DEG C
10~60min obtains dry carbonaceous pelletizing；Wherein the additive amount of carbonaceous reducing agent is that 1.1~2 ﹕ 1 add according to C/O molar ratio
Add；
(3) preparation of metallized pellet: tube-type atmosphere furnace is added in the atmosphere of inert gas in the carbonaceous pelletizing that step (2) is obtained
Under to be heated to 1000~1300 DEG C of progress high temperature reductions under the heating rate of 1~10 DEG C/min, and keep the temperature 10~200min into
Row reduction reaction, obtains metallic pellet；
(4) metallized pellet is heat-treated: the metallized pellet that step (3) is obtained is under an ar atmosphere in 1300~1380 DEG C of temperature
Under carry out 1~5h of heat treatment, obtain heat treatment pelletizing；
(5) the heat treatment pelletizing for obtaining step (4) is broken, ball milling, after magnetic separation magnetic product and non magnetic slurry；
(6) the non magnetic slurries filtration that step (5) obtains is dried to obtain fine fraction rich-titanium material semi-finished product, using dilute hydrochloric acid to thin
Grade rich-titanium material semi-finished product carry out acidleach, obtain fine fraction rich-titanium material and leachate；Reduced iron powder is dried to obtain in magnetic product；
(7) electric furnace is added in the fine fraction rich-titanium material for obtaining step (6), carries out melting recrystallization to fine fraction rich-titanium material, will weigh
Crystallized product crushing and screening obtains can chlorination rich-titanium material.
2. a kind of fine fraction according to claim 1 climb the preparation of western ilmenite concentrate can chlorination rich-titanium material method, feature exists
In: the fine fraction climbs TiO in western ilmenite concentrate2Content 42~50%, granularity are that -200 mesh account for 70%~85%.
3. a kind of fine fraction according to claim 1 climb the preparation of western ilmenite concentrate can chlorination rich-titanium material method, feature exists
In: the additive selects Fe-Si powder or Al powder, and additive additional amount is 0.5~2wt% that fine fraction aoxidizes ilmenite concentrate.
4. a kind of fine fraction according to claim 1 climb the preparation of western ilmenite concentrate can chlorination rich-titanium material method, feature exists
In: one or more of graphite, petroleum coke, coal or bituminous coal can be selected in the carbonaceous reducing agent.
5. a kind of fine fraction according to claim 1 climb the preparation of western ilmenite concentrate can chlorination rich-titanium material method, feature exists
In: it is broken that step (5) will be heat-treated pelletizing, and in N2Under atmosphere plus deionized water carries out 1~5h of mixing and ball milling, makes to be heat-treated
Mineral granularity afterwards is controlled at 10~100 μm, and metallization ilmenite concentrate powder is then obtained by filtration；Ilmenite concentrate powder will be metallized 100
Magnetic separation separation is carried out under the magnetic field strength of~800mT, obtains magnetic product and non magnetic slurry.
6. a kind of fine fraction according to claim 1 climb the preparation of western ilmenite concentrate can chlorination rich-titanium material method, feature exists
In: the pressure that step (2) suppresses balling-up is 10~25MPa.
7. a kind of fine fraction according to claim 1 climb the preparation of western ilmenite concentrate can chlorination rich-titanium material method, feature exists
In: the mass concentration of dilute hydrochloric acid is 10~18% in the step (6), the liquid-solid ratio of dilute hydrochloric acid and fine fraction rich-titanium material semi-finished product
For 1.5~4.5:1, acidleach temperature is 60~110 DEG C, and leaching time is 1~8h.
8. a kind of fine fraction according to claim 7 climb the preparation of western ilmenite concentrate can chlorination rich-titanium material method, feature exists
In: filtration washing obtains sediment after the acidleach, and by sediment, dry 1~5h obtains fine fraction at a temperature of 80~150 DEG C
Rich-titanium material.
9. a kind of fine fraction according to claim 1 climb the preparation of western ilmenite concentrate can chlorination rich-titanium material method, feature exists
In: fine fraction rich-titanium material addition electric furnace is melted into 1~8h at a temperature of 1550~1700 DEG C in the step (7), then to melting
Object water-spraying control obtains recrystallized product, and then obtaining recrystallized product crushing and screening can chlorination rich-titanium material.
10. a kind of fine fraction according to claim 1 climb the preparation of western ilmenite concentrate can chlorination rich-titanium material method, feature exists
In: the binder selects instant dissolving glue powder.
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| CN111440960A (en) * | 2020-05-27 | 2020-07-24 | 重庆大学 | A kind of preparation method of acid-soluble titanium slag |
| CN112662896A (en) * | 2020-12-18 | 2021-04-16 | 河南佰利联新材料有限公司 | Method for preparing titanium-rich material from titanium ore |
| CN113088683A (en) * | 2021-04-21 | 2021-07-09 | 重庆大学 | Method for preparing low-temperature titanium chloride slag by using low-grade titanium concentrate |
| CN113215396A (en) * | 2020-01-21 | 2021-08-06 | 有研工程技术研究院有限公司 | Method for granulating fine-particle titanium concentrate or titanium-rich material |
| CN113929134A (en) * | 2021-11-03 | 2022-01-14 | 龙佰武定钛业有限公司 | Recycling method of fine-fraction titanium-rich material |
| CN117926038A (en) * | 2023-11-29 | 2024-04-26 | 广东粤桥新材料科技有限公司 | Reducing agent for titanium concentrate redox separation and titanium concentrate redox separation process |
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| CN117926038A (en) * | 2023-11-29 | 2024-04-26 | 广东粤桥新材料科技有限公司 | Reducing agent for titanium concentrate redox separation and titanium concentrate redox separation process |
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Application publication date: 20191129 |