CN114231735A - Method for maintaining furnace based on smelting secondary resources - Google Patents
Method for maintaining furnace based on smelting secondary resources Download PDFInfo
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- CN114231735A CN114231735A CN202111452720.8A CN202111452720A CN114231735A CN 114231735 A CN114231735 A CN 114231735A CN 202111452720 A CN202111452720 A CN 202111452720A CN 114231735 A CN114231735 A CN 114231735A
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- pellets
- iron
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- powder
- smelting
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Links
- 238000003723 Smelting Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000008188 pellet Substances 0.000 claims abstract description 67
- 239000000843 powder Substances 0.000 claims abstract description 64
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 56
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910052742 iron Inorganic materials 0.000 claims abstract description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 29
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 25
- 239000011230 binding agent Substances 0.000 claims abstract description 19
- 239000002893 slag Substances 0.000 claims abstract description 19
- 238000007670 refining Methods 0.000 claims abstract description 18
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 13
- 239000007767 bonding agent Substances 0.000 claims abstract description 13
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 13
- 229910001610 cryolite Inorganic materials 0.000 claims abstract description 13
- 239000010436 fluorite Substances 0.000 claims abstract description 13
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000010459 dolomite Substances 0.000 claims abstract description 9
- 229910000514 dolomite Inorganic materials 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 10
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 8
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 8
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 8
- 239000005011 phenolic resin Substances 0.000 claims description 8
- 229920001568 phenolic resin Polymers 0.000 claims description 8
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 8
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 8
- 239000000440 bentonite Substances 0.000 claims description 7
- 229910000278 bentonite Inorganic materials 0.000 claims description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 7
- 229920002472 Starch Polymers 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000008107 starch Substances 0.000 claims description 6
- 235000019698 starch Nutrition 0.000 claims description 6
- 239000004375 Dextrin Substances 0.000 claims description 4
- 229920001353 Dextrin Polymers 0.000 claims description 4
- 239000011449 brick Substances 0.000 claims description 4
- 235000019425 dextrin Nutrition 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000002956 ash Substances 0.000 description 21
- 238000007689 inspection Methods 0.000 description 16
- 239000000428 dust Substances 0.000 description 14
- 239000000203 mixture Substances 0.000 description 9
- 238000005070 sampling Methods 0.000 description 7
- 238000009849 vacuum degassing Methods 0.000 description 7
- 239000002699 waste material Substances 0.000 description 7
- 238000012216 screening Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000005266 casting Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 239000010881 fly ash Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012360 testing method Methods 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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/527—Charging of the electric furnace
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for maintaining a furnace based on smelting secondary resources, which comprises the following steps: dividing the smelting secondary resources into iron-rich secondary resources or low-iron secondary resources according to the sources of the smelting secondary resources; adding magnesium oxide, light-burned dolomite and a bonding agent into the iron-rich secondary resource, uniformly mixing, performing cold pressing at 10-18Mpa to prepare 10-50mm furnace protection pellets, and returning the furnace protection pellets to the electric furnace; adding cryolite powder, fluorite powder, special-grade bauxite powder, aluminum slag powder and a binding agent into the low-iron secondary resource, uniformly mixing, pressing under 10-18Mpa to prepare 10-30mm refined pellets, and returning the refined pellets to a refining furnace for use; the furnace protecting pellets and the refining pellets produced by smelting secondary resources are finally used for returning to the electric furnace and the refining furnace for production, so that the furnace protecting pellets are beneficial to the recovery and utilization of beneficial elements, and have economic benefits and wide popularization and application values compared with the direct utilization.
Description
Technical Field
The invention belongs to the field of comprehensive utilization of secondary resources, and particularly relates to a method for maintaining a furnace based on smelting secondary resources.
Background
Smelting secondary resources refer to secondary resources such as electric furnace dust, LF furnace dust, VD dust, AOD dust and the like, the electric furnace dust and the like are positioned in a national environmental protection catalogue and are dangerous waste at present, and the main utilization mode of the secondary resources is storage stacking and direct remelting smelting at present. The storage stacking is not utilized, so that dangerous waste is accumulated and the environment is influenced, the direct smelting in the furnace can cause the influences of quality fluctuation, uncontrolled alkalinity of added materials, large dust, increased power consumption and the like, and the recycling of elements such as Fe, Ca, F and the like is not facilitated. In order to further improve the utilization rate of the pellets, a utilization method for producing furnace protecting pellets and refining pellets by using electric furnace smelting secondary resources is developed on the basis.
Disclosure of Invention
The invention provides a method for maintaining a furnace based on smelting secondary resources, aiming at the problems of each method for treating the smelting secondary resources.
A method for maintaining a furnace based on smelting secondary resources comprises the following steps:
dividing the smelting secondary resources into iron-rich secondary resources or low-iron secondary resources according to the sources of the smelting secondary resources;
adding magnesium oxide, light-burned dolomite and a bonding agent into the iron-rich secondary resource, uniformly mixing, performing cold pressing at 10-18Mpa to prepare 10-50mm furnace protection pellets, and returning the furnace protection pellets to the electric furnace;
adding cryolite powder, fluorite powder, special-grade bauxite powder, aluminum slag powder and a binding agent into the low-iron secondary resource, uniformly mixing, pressing under 10-18Mpa to prepare 10-30mm refined pellets, and returning the refined pellets to a refining furnace for use;
the iron-rich secondary resource is a smelting secondary resource with the total iron mass fraction of more than 40 percent, such as electric furnace dust removal ash and waste steel grinding ash;
the low-iron secondary resource is a smelting secondary resource with the total iron mass fraction of less than 40 percent, such as LF refining ash, AOD dedusting ash, VD dedusting ash and casting residues.
Further limiting, respectively carrying out sampling inspection on the iron-rich secondary resource or the low-iron secondary resource after the division is finished so as to determine the specific mass fraction of iron;
determining the adding mass of the magnesium oxide, the light-burned dolomite and the bonding agent according to the specific mass fraction of iron in the iron-rich secondary resource;
or;
and determining the adding mass of the cryolite powder, the fluorite powder, the special-grade bauxite powder, the aluminum slag powder and the bonding agent according to the specific mass fraction of iron in the low-iron secondary resource.
Further defined, the binder comprises two or more of phenolic resin, sodium carboxymethylcellulose, industrial starch, industrial dextrin, bentonite, and finely ground weathered ores.
Further limiting, the mass fraction of the binding agent in the furnace protecting pellet and the refining pellet is 1.5 wt% -5 wt%.
Further limiting, the magnesium oxide is a material with the particle size of 0-2mm and the MgO content of more than 75 wt% which is obtained after the magnesia brick is sorted and crushed.
Further defined, the MgO content in the furnace protecting pellet is more than 11 wt%.
Further limiting, the aluminum slag powder is a material of 0-3mm obtained by crushing leftover materials after hot processing of aluminum resources with the Al content of more than 99 wt%.
Further defined, the refined pellets have an Al content greater than 8 wt%.
Has the advantages that: the furnace protecting pellets and the refining pellets produced by smelting secondary resources are finally used for returning to the electric furnace and the refining furnace for production, so that the furnace protecting pellets are beneficial to the recovery and utilization of beneficial elements, and have economic benefits and wide popularization and application values compared with the direct utilization.
Detailed Description
Example 1
The smelting secondary resource used in the embodiment is electric furnace dust removal ash, and the binder is obtained by mixing phenolic resin and sodium carboxymethyl cellulose; the magnesium oxide is 0-2mm powder obtained by selecting and crushing magnesia bricks, and the MgO content is 80 wt%;
the method for preparing the furnace protecting pellets by using the electric furnace fly ash comprises the following steps:
s1, sampling electric furnace dust removal ash for inspection to obtain an inspection result;
s2, determining the adding quality of the magnesium oxide, the light-burned dolomite and the bonding agent according to the inspection result;
s3, uniformly mixing the electric furnace dust, magnesium oxide, light-burned dolomite and a binding agent, then passing the mixture through a high-pressure ball press (the pressure of the high-pressure ball press during working is 10Mpa) to obtain cold-pressed pellets, screening the cold-pressed pellets to obtain 10-50mm furnace protection pellets, determining the MgO content in the furnace protection pellets to be 15 wt%, and returning the furnace protection pellets to the electric furnace.
Example 2
The smelting secondary resource used in the embodiment is waste steel grinding ash, and the binder is obtained by mixing phenolic resin, sodium carboxymethyl cellulose, industrial starch, industrial dextrin and bentonite; the magnesium oxide is 0-2mm powder obtained by selecting and crushing magnesia bricks, and the MgO content is 78 wt%;
the method for preparing the furnace protecting pellets by using the waste steel grinding ash comprises the following steps:
s1, sampling and inspecting waste steel grinding ash to obtain an inspection result;
s2, determining the adding quality of the magnesium oxide, the light-burned dolomite and the bonding agent according to the test results shown in the table 2;
s3, uniformly mixing the waste steel grinding ash, the magnesium oxide, the light-burned dolomite and the binding agent, then passing the mixture through a high-pressure ball press (the pressure of the high-pressure ball press during working is 17Mpa) to obtain cold-pressed pellets, screening the cold-pressed pellets to obtain 10-50mm furnace protection pellets, determining the MgO content in the furnace protection pellets to be 13 wt%, and returning the furnace protection pellets to the electric furnace.
Example 3
The smelting secondary resource used in the embodiment is LF refined ash, and the binder is obtained by mixing phenolic resin, sodium carboxymethylcellulose and bentonite in the embodiment; the aluminum slag powder is leftover materials of low-impurity aluminum resources with the Al content of more than 99 percent, such as national standard double-zero aluminum ingots and the like, which are subjected to thermal processing, and is selected and crushed to obtain a mixture of 0-3mm powder and particles;
the method for preparing the LF refining ash into the furnace protecting pellets comprises the following steps:
s1, sampling LF refined ash for inspection to obtain an inspection result;
s2, determining the adding quality of the cryolite powder, the fluorite powder, the special-grade bauxite powder, the aluminum slag powder and the bonding agent according to the inspection result;
s3, uniformly mixing the LF refined ash with cryolite powder, fluorite powder, special-grade bauxite powder, aluminum slag powder and a binding agent, then passing the mixture through a high-pressure ball press (the pressure of the high-pressure ball press during working is 18Mpa) to obtain cold-pressed pellets, screening the cold-pressed pellets to obtain refined pellets of 10-30mm, determining the Al content in the refined pellets to be 10 wt%, and returning the refined pellets to a refining furnace.
Example 4
The smelting secondary resource used in the embodiment is AOD dedusting ash, and the binder in the embodiment is obtained by mixing phenolic resin, sodium carboxymethyl cellulose, industrial starch and bentonite; the aluminum slag powder is leftover materials of low-impurity aluminum resources with the Al content of more than 99 percent, such as national standard double-zero aluminum ingots and the like, which are subjected to thermal processing, and is selected and crushed to obtain a mixture of 0-3mm powder and particles;
the method for preparing the AOD fly ash into the furnace protecting pellets comprises the following steps:
s1, sampling AOD dust removal ash for inspection;
s2, determining the adding quality of the cryolite powder, the fluorite powder, the special-grade bauxite powder, the aluminum slag powder and the bonding agent according to the inspection result;
s3, uniformly mixing the AOD fly ash, the cryolite powder, the fluorite powder, the special-grade bauxite powder, the aluminum slag powder and the binding agent, then passing through a high-pressure ball press (the pressure of the high-pressure ball press during working is 18Mpa) to obtain cold-pressed pellets, screening the cold-pressed pellets to obtain refined pellets of 10-30mm, determining that the Al content in the refined pellets is 12 wt%, and returning the refined pellets to a refining furnace.
Example 5
The smelting secondary resource used in the embodiment is VD dedusting ash, and the binder in the embodiment is obtained by mixing phenolic resin, sodium carboxymethyl cellulose, industrial starch, finely ground weathered ore and bentonite; the aluminum slag powder is leftover materials of low-impurity aluminum resources with the Al content of more than 99 percent, such as national standard double-zero aluminum ingots and the like, which are subjected to thermal processing, and is selected and crushed to obtain a mixture of 0-3mm powder and particles;
the method for preparing the furnace protection pellets by using the VD dust removal ash comprises the following steps:
s1, sampling VD (vacuum degassing) dust removal ash for inspection to obtain an inspection result;
s2, determining the adding quality of the cryolite powder, the fluorite powder, the special-grade bauxite powder, the aluminum slag powder and the bonding agent according to the inspection results shown in the table 5;
s3, uniformly mixing VD dust removal ash with cryolite powder, fluorite powder, special-grade bauxite powder, aluminum slag powder and a binding agent, then passing the mixture through a high-pressure ball press (the pressure of the high-pressure ball press during working is 15Mpa) to obtain cold-pressed pellets, screening the cold-pressed pellets to obtain refined pellets of 10-30mm, determining that the Al content in the refined pellets is 14 wt%, and returning the refined pellets to a refining furnace.
Example 6
The smelting secondary resource used in the embodiment is casting residue, and the binder is obtained by mixing phenolic resin, sodium carboxymethyl cellulose, industrial starch, industrial dextrin, bentonite and finely ground weathered ore; the aluminum slag powder is leftover materials of low-impurity aluminum resources with the Al content of more than 99 percent, such as national standard double-zero aluminum ingots and the like, which are subjected to thermal processing, and is selected and crushed to obtain a mixture of 0-3mm powder and particles;
the method for preparing the furnace protecting pellets by the casting residues comprises the following steps:
s1, sampling casting residues for inspection to obtain an inspection result;
s2, determining the adding quality of the cryolite powder, the fluorite powder, the special-grade bauxite powder, the aluminum slag powder and the bonding agent according to the inspection results shown in the table 6;
s3, uniformly mixing the casting residue with cryolite powder, fluorite powder, special-grade bauxite powder, aluminum slag powder and a binding agent, then passing the mixture through a high-pressure ball press (the pressure of the high-pressure ball press during working is 10Mpa) to obtain cold-pressed pellets, screening the cold-pressed pellets to obtain refined pellets of 10-30mm, determining the Al content in the refined pellets to be 9 wt%, and returning the refined pellets to a refining furnace.
In conclusion, from the examples 1 to 6, it can be seen that the furnace protecting pellets and the refining pellets produced by smelting the secondary resources are finally used for returning to the electric furnace and the refining furnace for production, which is not only beneficial to protecting the furnace but also capable of recycling beneficial elements therein, and has economic benefits and wide popularization and application values compared with direct utilization.
Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A method for maintaining a furnace based on smelting secondary resources is characterized by comprising the following steps:
dividing the smelting secondary resources into iron-rich secondary resources or low-iron secondary resources according to the sources of the smelting secondary resources;
adding magnesium oxide, light-burned dolomite and a bonding agent into the iron-rich secondary resource, uniformly mixing, performing cold pressing at 10-18Mpa to prepare 10-50mm furnace protection pellets, and returning the furnace protection pellets to the electric furnace;
adding cryolite powder, fluorite powder, special-grade bauxite powder, aluminum slag powder and a binding agent into the low-iron secondary resource, uniformly mixing, pressing under 10-18Mpa to prepare 10-30mm refined pellets, and returning the refined pellets to a refining furnace for use;
the iron-rich secondary resource is a smelting secondary resource with the total iron mass fraction of more than 40%;
the low-iron secondary resource is a smelting secondary resource with the total iron mass fraction of less than 40%.
2. The method of claim 1, wherein the iron-rich secondary resource or the iron-poor secondary resource is sampled and inspected after the division is completed to determine the specific mass fraction of iron;
determining the adding mass of the magnesium oxide, the light-burned dolomite and the bonding agent according to the specific mass fraction of iron in the iron-rich secondary resource;
or;
and determining the adding mass of the cryolite powder, the fluorite powder, the special-grade bauxite powder, the aluminum slag powder and the bonding agent according to the specific mass fraction of iron in the low-iron secondary resource.
3. The method of claim 1 or 2, wherein the binding agent comprises two or more of phenolic resin, sodium carboxymethylcellulose, industrial starch, industrial dextrin, bentonite, finely ground weathered ores.
4. The method for maintaining a furnace based on smelting secondary resources as claimed in claim 3, wherein the mass fraction of the binding agent in the furnace-protecting pellets and the refining pellets is 1.5 wt% -5 wt%.
5. The method for maintaining a furnace based on smelting secondary resources according to claim 1 or 2, wherein the magnesium oxide is a material which is obtained by sorting and crushing magnesia bricks, has a particle size of 0-2mm, and has an MgO content of more than 75 wt%.
6. The method of claim 1, wherein the furnace pellet has an MgO content of greater than 11 wt%.
7. The method of claim 1, wherein the aluminum slag powder is a 0-3mm material obtained by crushing scrap after hot working of aluminum resources with Al content of more than 99 wt%.
8. The method of claim 1, wherein the Al content of the refined pellets is greater than 8 wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111452720.8A CN114231735A (en) | 2021-12-01 | 2021-12-01 | Method for maintaining furnace based on smelting secondary resources |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111452720.8A CN114231735A (en) | 2021-12-01 | 2021-12-01 | Method for maintaining furnace based on smelting secondary resources |
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| Publication Number | Publication Date |
|---|---|
| CN114231735A true CN114231735A (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111452720.8A Pending CN114231735A (en) | 2021-12-01 | 2021-12-01 | Method for maintaining furnace based on smelting secondary resources |
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| Country | Link |
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| CN (1) | CN114231735A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117210681A (en) * | 2023-10-09 | 2023-12-12 | 攀枝花钢城集团有限公司 | Method for preparing slag-making furnace protection agent by utilizing VD (vacuum deposition) dust |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020175441A1 (en) * | 1997-10-30 | 2002-11-28 | Kabushiki Kaisha Kobe Seiko Sho | Method of producing iron oxide pellets |
| CN102876835A (en) * | 2012-10-26 | 2013-01-16 | 重庆大学 | New technology for preparing converter slag-regulating reagent by light-burning dolomite powder ash |
| CN104775023A (en) * | 2015-05-07 | 2015-07-15 | 湖南华菱湘潭钢铁有限公司 | Manufacturing method for cold-pressed pellets for steelmaking |
| CN105112651A (en) * | 2015-09-28 | 2015-12-02 | 攀枝花钢城集团有限公司 | High-aluminum slag modifier pellets and production method thereof |
| CN107696240A (en) * | 2017-09-22 | 2018-02-16 | 北京大学 | A kind of comprehensive utilization of steel slags |
-
2021
- 2021-12-01 CN CN202111452720.8A patent/CN114231735A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| US20020175441A1 (en) * | 1997-10-30 | 2002-11-28 | Kabushiki Kaisha Kobe Seiko Sho | Method of producing iron oxide pellets |
| CN102876835A (en) * | 2012-10-26 | 2013-01-16 | 重庆大学 | New technology for preparing converter slag-regulating reagent by light-burning dolomite powder ash |
| CN104775023A (en) * | 2015-05-07 | 2015-07-15 | 湖南华菱湘潭钢铁有限公司 | Manufacturing method for cold-pressed pellets for steelmaking |
| CN105112651A (en) * | 2015-09-28 | 2015-12-02 | 攀枝花钢城集团有限公司 | High-aluminum slag modifier pellets and production method thereof |
| CN107696240A (en) * | 2017-09-22 | 2018-02-16 | 北京大学 | A kind of comprehensive utilization of steel slags |
Non-Patent Citations (1)
| Title |
|---|
| 王鹏: "太钢转炉除尘灰冷固球团技术及应用", 《冶金能源》, vol. 37, no. 3, pages 45 - 46 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117210681A (en) * | 2023-10-09 | 2023-12-12 | 攀枝花钢城集团有限公司 | Method for preparing slag-making furnace protection agent by utilizing VD (vacuum deposition) dust |
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Application publication date: 20220325 |