CN101823738A - Method for producing light magnesium carbonate and coproducing fine calcium carbonate and water glass by chlor-alkali salt sludge - Google Patents
Method for producing light magnesium carbonate and coproducing fine calcium carbonate and water glass by chlor-alkali salt sludge Download PDFInfo
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- CN101823738A CN101823738A CN 201010169639 CN201010169639A CN101823738A CN 101823738 A CN101823738 A CN 101823738A CN 201010169639 CN201010169639 CN 201010169639 CN 201010169639 A CN201010169639 A CN 201010169639A CN 101823738 A CN101823738 A CN 101823738A
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 50
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 title claims abstract description 32
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 25
- 235000019353 potassium silicate Nutrition 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000010802 sludge Substances 0.000 title 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 64
- 239000012065 filter cake Substances 0.000 claims description 42
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 40
- 150000003839 salts Chemical class 0.000 claims description 37
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 30
- 238000006243 chemical reaction Methods 0.000 claims description 29
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 26
- 239000001569 carbon dioxide Substances 0.000 claims description 25
- 239000000706 filtrate Substances 0.000 claims description 25
- 239000000047 product Substances 0.000 claims description 23
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 20
- 239000000377 silicon dioxide Substances 0.000 claims description 20
- 235000012239 silicon dioxide Nutrition 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 20
- 239000000243 solution Substances 0.000 claims description 18
- 238000003763 carbonization Methods 0.000 claims description 17
- 239000000395 magnesium oxide Substances 0.000 claims description 17
- 238000005406 washing Methods 0.000 claims description 17
- 235000019270 ammonium chloride Nutrition 0.000 claims description 15
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 14
- 239000001110 calcium chloride Substances 0.000 claims description 14
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 14
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 10
- 239000013543 active substance Substances 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000004115 Sodium Silicate Substances 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 4
- 229920000053 polysorbate 80 Polymers 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000004381 surface treatment Methods 0.000 claims description 2
- 239000007795 chemical reaction product Substances 0.000 claims 2
- 238000005352 clarification Methods 0.000 claims 2
- 239000000839 emulsion Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000004806 packaging method and process Methods 0.000 claims 1
- 239000004094 surface-active agent Substances 0.000 claims 1
- 125000001309 chloro group Chemical class Cl* 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 54
- 235000002639 sodium chloride Nutrition 0.000 description 37
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 23
- 229960001866 silicon dioxide Drugs 0.000 description 19
- 239000007789 gas Substances 0.000 description 14
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical group [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 14
- 235000011089 carbon dioxide Nutrition 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 11
- 239000000292 calcium oxide Substances 0.000 description 11
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 11
- 239000001095 magnesium carbonate Substances 0.000 description 11
- 235000014380 magnesium carbonate Nutrition 0.000 description 11
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 11
- 229960001708 magnesium carbonate Drugs 0.000 description 11
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 10
- QWDJLDTYWNBUKE-UHFFFAOYSA-L magnesium bicarbonate Chemical compound [Mg+2].OC([O-])=O.OC([O-])=O QWDJLDTYWNBUKE-UHFFFAOYSA-L 0.000 description 8
- 239000002370 magnesium bicarbonate Substances 0.000 description 8
- 229910000022 magnesium bicarbonate Inorganic materials 0.000 description 8
- 235000014824 magnesium bicarbonate Nutrition 0.000 description 8
- 238000005255 carburizing Methods 0.000 description 6
- 239000003153 chemical reaction reagent Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- JYYOBHFYCIDXHH-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O JYYOBHFYCIDXHH-UHFFFAOYSA-N 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 238000013459 approach Methods 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 239000004495 emulsifiable concentrate Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000002681 magnesium compounds Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a method for producing light magnesium carbonate and coproducing fine calcium carbonate and water glass by using chlorine salt mud.
Description
Technical field
The present invention relates to the production method of magnesiumcarbonate and lime carbonate, particularly, relate to a kind of method of producing Magnesium Carbonate Light 41-45 coproduction fine calcium carbonate and water glass with the chlor-alkali salt slurry.
Background technology
The chlor-alkali salt slurry is from the pulpous state discharge that is produced in the refining crude salt process, and the sedimentary discharge of gained is a sea salt mud behind the salt solution separate part sodium-chlor.The main component of salt slurry is magnesium oxide, calcium oxide, silicon-dioxide, barium sulfate and a spot of sodium-chlor and mud.Thereby potential huge utility value.Yet at present, the salt slurry of most of producers is not effectively handled and is utilized, and only is used to build dykes and dams and roadbed material after the dehydration, perhaps stacks in factory throughout the year.Near perhaps directly entering rivers,lakes and seas, thus cause serious environmental to pollute.
The complicated component that salt slurry contains brings certain difficulty to industrial utilization, but because of its potential utility value, people also constantly explore the salt slurry utilization of waste material, are converted into the method for useful Industrial products.Application number is that 200310122805.5 patent of invention discloses a kind of technology of utilizing the chlor-alkali salt slurry to produce ultra-fine barium sulfate and lime carbonate, its process characteristic is a salt material-mud elder generation net filtration after filtration, dry, calcining obtains ultra-fine barium sulfate through technological processs such as dissolving with hydrochloric acid, separation, washing, drying, comminution by gas stream again; The filtrate of filtering gained adds ammoniacal liquor and transfers pH to remove impurity such as ferrimanganic, and the clear liquid after the removal of impurities adds volatile salt and tensio-active agent, stirs, reaction obtains calcium carbonate superfine powder.The advantage of this invention is utilization of waste material, has reduced environmental pollution, and produces ultra-fine barium sulfate and the lime carbonate obtain from salt slurry, for the comprehensive utilization of salt slurry provides a new way.Yet this is invented described technology and has only utilized barium sulfate and the calcium cpd that is contained in the salt slurry, magnesium compound and silicon compound are not utilized and excavation, thereby, be not the technology of the comprehensive utilization of an ideal salt slurry.
Therefore, in order fully to extract and utilize effective constituent in the salt slurry,, be necessary to carry out new exploration and research for the comprehensive utilization of salt slurry provides cost-effective approach.
Summary of the invention
For this reason, the invention provides a kind of method of producing Magnesium Carbonate Light 41-45 coproduction fine calcium carbonate and water glass with the chlor-alkali salt slurry, compounds such as the calcium that contains in the salt slurry, magnesium, silicon are effectively extracted and utilized to this method, given full play to the potential value of salt slurry, for the comprehensive utilization of salt slurry provides cost-effective approach.
Technical scheme of the present invention is: a kind of method of producing Magnesium Carbonate Light 41-45 coproduction fine calcium carbonate and water glass with the chlor-alkali salt slurry comprises the steps:
A:, remove the acid group impurity of solubility with washing filter (1) filter wash three times of chlor-alkali salt slurry; At this moment, contain in the salt slurry with magnesium oxide, calcium oxide and silicon-dioxide are the compound of main component;
B: steps A gained salt slurry is put in first carbonizer (2), and in first carbonizer (2) in according to salt slurry contained magnesium oxide and the mass ratio 1: 1.8～2.2 of carbonic acid gas pure substance feed carbon dioxides, carry out carburizing reagent; This moment, Magnesium hydrogen carbonate or magnesiumcarbonate were produced in the reaction of magnesium oxide and carbonic acid gas and water, and the two is water soluble all; Calcium oxide and carbon dioxide reaction are produced lime carbonate, and lime carbonate is water insoluble substantially, thereby precipitates;
C: step B products therefrom is filtered through first filter (4), obtain first filter cake and first settled solution; Be main component with lime carbonate and silicon-dioxide in described first filter cake; In first settled solution based on Magnesium hydrogen carbonate or magnesiumcarbonate;
Resulting first settled solution of D: step C obtains light-weight magnesiumcarbonate product (17) through slurry tank (5) thermal degradation, dry, selection by winnowing wrapping machine (7) packing of sedimentation moisture eliminator (6);
E: first filter cake and ammonium chloride that step C obtains are put into reaction in the corrosion-resistant reactor (8) according to the mass ratio 1: 0.87～1.27 of the pure substance of lime carbonate and ammonium chloride, generate calcium chloride and ammoniacal liquor and carbon dioxide, filter through second strainer (9), get second filter cake and second clear filtrate; Based on silicon-dioxide, its mass content reaches 80% in second filter cake; In second clear filtrate based on calcium chloride and ammoniacal liquor;
F: second clear filtrate that step e obtains is knocked down second carbonizer (10), with mass concentration is that 1～5% tensio-active agent carries out surface treatment, stir speed (S.S.) is 120～220r/min, and in second carbonizer (10), feed carbon dioxide, making calcium chloride and carbonic acid gas in second clear filtrate is 1: 0.19～0.59 to carry out carbonization according to the ratio of the quality of pure substance, product filters through the 3rd strainer (12), gets the 3rd filter cake of clarifying ammonium chloride filtrate and white; The 3rd filter cake is a lime carbonate;
G: the 3rd filter cake of the white of step e gained is through washing machine (13) washing, moisture eliminator (14) drying, pulverizer (15), obtains fine calcium carbonate product (18);
H: resulting second filter cake of step e is put into revolving horizontal drum reactor (16) lining with the mass ratio 1: 1.11～1.51 of the pure substance of sodium hydroxide with sodium hydroxide according to silicon-dioxide, reaction is hydrolyzed, the sodium silicate aqueous solution of reaction solution body is water glass (19).
Measure the carburizing reagent terminal point with the first carbonization table (3) among the step B.
Measure the carburizing reagent terminal point with the second carbonization table (11) in the step F.
Used carbon dioxide is pure carbon dioxide gas or carbonic acid gas volume content greater than 20% mixed gas in step B and the step F.
Described tensio-active agent is selected from emulsifiable concentrate, tween 80 and the mixture of the two.
Method of producing Magnesium Carbonate Light 41-45 coproduction fine calcium carbonate and water glass of the present invention with the chlor-alkali salt slurry, its chemical equation is:
MgO+2CO
2+H
2O＝Mg(HCO
3)
2
MgO+CO
2＝MgCO
3
Mg(HCO
3)
2＝MgCO
3+H
2O+CO
2
CaCO
3+2NH
4Cl+H
2O＝CaCl
2+CO
2+2NH
4OH
CaCl
2+CO
2+2NH
4OH＝CaCO
3+2NH
4Cl+H
2O
SiO
2+2NaOH＝Na
2SiO
3+H
2O
Method of producing Magnesium Carbonate Light 41-45 coproduction fine calcium carbonate and water glass with the chlor-alkali salt slurry of the present invention, effectively extract and utilized compounds such as the calcium that contains in the salt slurry, magnesium, silicon, given full play to the potential value of salt slurry, for the comprehensive utilization of salt slurry provides cost-effective approach.This method is simple, processing ease, and economic benefit is higher.
Description of drawings
Fig. 1 has showed method technical process of producing Magnesium Carbonate Light 41-45 coproduction fine calcium carbonate and water glass with the chlor-alkali salt slurry of the present invention, wherein,
(1): washing filter (2): first carbonizer (3): the first carbonization table
(4): first strainer (5): slurry tank (6): sedimentation moisture eliminator
(7): selection by winnowing wrapping machine (8): corrosion-resistant reactor (9): second strainer
(10): second carbonizer (11): the second carbonization table (12): the 3rd strainer
(13): washing machine (14): moisture eliminator (15): pulverizer
(16): revolving horizontal drum reactor (17): magnesiumcarbonate product (18): calcium carbonate product,
(19): water glass
Embodiment
Further describe and illustrate method of producing Magnesium Carbonate Light 41-45 coproduction fine calcium carbonate and water glass of the present invention below in conjunction with specific embodiment, disclose materials such as the magnesium oxide that how to utilize method of the present invention to extract and utilize in the salt slurry to be contained, calcium oxide, silicon-dioxide with the chlor-alkali salt slurry.
Chlor-alkali salt slurry of the present invention is from the salt slurry that obtains for raw material salt manufacturing with sea salt.After testing, magnesian mass content is 19.34% in the used salt slurry of following embodiment, and the mass content of calcium oxide is 19%, and the mass content of silicon-dioxide is 21.88%.
Embodiment one
A kind of method of producing Magnesium Carbonate Light 41-45 coproduction fine calcium carbonate and water glass with the chlor-alkali salt slurry, comprise the steps: washing filter (1) filter wash three times of 500kg chlor-alkali salt slurry, remove the acid group impurity of solubility, at this moment, contain in the salt slurry with magnesium oxide, calcium oxide and silicon-dioxide are the compound of main component; Then, the gained salt slurry is put in first carbonizer (2), and in first carbonizer (2), fed pure carbon dioxide gas, make magnesium oxide contained in the salt slurry and carbonic acid gas carry out carbonization at 1: 2.0 according to the mass ratio of pure substance; This moment, Magnesium hydrogen carbonate or magnesiumcarbonate were produced in the reaction of magnesium oxide and carbonic acid gas and water, and the two is water soluble all; Calcium oxide and carbon dioxide reaction are produced lime carbonate, and lime carbonate is water insoluble substantially, thereby precipitates; The carburizing reagent products therefrom being filtered through first filter (4), obtain first filter cake and first settled solution, is main component with lime carbonate and silicon-dioxide in described first filter cake, in first settled solution based on Magnesium hydrogen carbonate or magnesiumcarbonate; First settled solution obtains fine Magnesium Carbonate Light 41-45 product (17) through slurry tank (5) thermal degradation, dry, selection by winnowing wrapping machine (7) packing of sedimentation moisture eliminator (6); First filter cake and ammonium chloride are put into reaction in the corrosion-resistant reactor (8) according to the mass ratio of the pure substance of lime carbonate and ammonium chloride at 1: 1.27, generate calcium chloride and ammoniacal liquor and carbon dioxide, filter through second strainer (9), get second filter cake and second clear filtrate; Based on silicon-dioxide, its mass content reaches 80% in second filter cake; In second clear filtrate based on calcium chloride and ammoniacal liquor; Second clear filtrate is knocked down second carbonizer (10), with mass concentration is that 1% tensio-active agent emulsifiable concentrate is handled, stir speed (S.S.) is 220r/min, and the carbon dioxide containing gas volume is 25% mixed gas in second carbonizer (10), making calcium chloride and carbonic acid gas in second clear filtrate is to carry out carbonization at 1: 0.19 according to the ratio of the quality of pure substance, carbonation reaction temperature is controlled to be 10～20 ℃ of products and filters through the 3rd strainer (12), gets the 3rd filter cake of clarifying ammonium chloride filtrate and white; The 3rd filter cake is a lime carbonate; The 3rd filter cake of white is through washing machine (13) washing, moisture eliminator (14) drying, pulverizer (15), obtains fine calcium carbonate product (18); Second filter cake is put into revolving horizontal drum reactor (16) lining with the mass ratio of the pure substance of sodium hydroxide 1: 1.11 with sodium hydroxide according to silicon-dioxide, the reaction that is hydrolyzed, and the sodium silicate aqueous solution of reaction solution body is water glass (19).
Embodiment two
A kind of method of producing Magnesium Carbonate Light 41-45 coproduction fine calcium carbonate and water glass with the chlor-alkali salt slurry, comprise the steps: washing filter (1) filter wash three times of 500kg chlor-alkali salt slurry, remove the acid group impurity of solubility, at this moment, contain in the salt slurry with magnesium oxide, calcium oxide and silicon-dioxide are the compound of main component; Then, the gained salt slurry is put in first carbonizer (2), and to feed the carbon dioxide containing gas volume in first carbonizer (2) be 25% mixed gas, makes magnesium oxide contained in the salt slurry and carbonic acid gas carry out carbonization at 1: 1.8 according to the mass ratio of pure substance; This moment, Magnesium hydrogen carbonate or magnesiumcarbonate were produced in the reaction of magnesium oxide and carbonic acid gas and water, and the two is water soluble all; Calcium oxide and carbon dioxide reaction are produced lime carbonate, and lime carbonate is water insoluble substantially, thereby precipitates; The carburizing reagent products therefrom being filtered through first filter (4), obtain first filter cake and first settled solution, is main component with lime carbonate and silicon-dioxide in described first filter cake, in first settled solution based on Magnesium hydrogen carbonate or magnesiumcarbonate; First settled solution obtains Magnesium Carbonate Light 41-45 product (17) through slurry tank (5) thermal degradation, dry, selection by winnowing wrapping machine (7) packing of sedimentation moisture eliminator (6); First filter cake and ammonium chloride are put into reaction in the corrosion-resistant reactor (8) according to the mass ratio of the pure substance of lime carbonate and ammonium chloride at 1: 1.0, generate calcium chloride and ammoniacal liquor and carbon dioxide, filter through second strainer (9), get second filter cake and second clear filtrate; Based on silicon-dioxide, its mass content reaches 80% in second filter cake; In second clear filtrate based on calcium chloride and ammoniacal liquor; Second clear filtrate is knocked down second carbonizer (10), with mass concentration is that 3% tensio-active agent is handled, stir speed (S.S.) is 180r/min, wherein containing mass concentration in the tensio-active agent and be 2% emulsifiable concentrate and mass concentration is 2% tween 80, and the carbon dioxide containing gas volume is 40% mixed gas in second carbonizer (10), making calcium chloride and carbonic acid gas in second clear filtrate is to carry out carbonization at 1: 0.30 according to the ratio of the quality of pure substance, carbonation reaction temperature is controlled to be 35～40 ℃, product filters through the 3rd strainer (12), gets the 3rd filter cake of clarifying ammonium chloride filtrate and white; The 3rd filter cake is a lime carbonate; The 3rd filter cake of white is through washing machine (13) washing, moisture eliminator (14) drying, pulverizer (15), obtains fine calcium carbonate product (18); Second filter cake is put into revolving horizontal drum reactor (16) lining with the mass ratio of the pure substance of sodium hydroxide 1: 1.35 with sodium hydroxide according to silicon-dioxide, the reaction that is hydrolyzed, and the sodium silicate aqueous solution of reaction solution body is water glass (19).
Embodiment three
A kind of method of producing Magnesium Carbonate Light 41-45 coproduction fine calcium carbonate and water glass with the chlor-alkali salt slurry, comprise the steps: washing filter (1) filter wash three times of 500kg chlor-alkali salt slurry, remove the acid group impurity of solubility, at this moment, contain in the salt slurry with magnesium oxide, calcium oxide and silicon-dioxide are the compound of main component; Then, the gained salt slurry is put in first carbonizer (2), and the carbon dioxide containing gas volume is 40% mixed gas in first carbonizer (2), makes magnesium oxide contained in the salt slurry and carbonic acid gas carry out carbonization at 1: 2.2 according to the mass ratio of pure substance; This moment, Magnesium hydrogen carbonate or magnesiumcarbonate were produced in the reaction of magnesium oxide and carbonic acid gas and water, and the two is water soluble all; Calcium oxide and carbon dioxide reaction are produced lime carbonate, and lime carbonate is water insoluble substantially, thereby precipitates; The carburizing reagent products therefrom being filtered through first filter (4), obtain first filter cake and first settled solution, is main component with lime carbonate and silicon-dioxide in described first filter cake, in first settled solution based on Magnesium hydrogen carbonate or magnesiumcarbonate; First settled solution obtains Magnesium Carbonate Light 41-45 product (17) through slurry tank (5) thermal degradation, dry, selection by winnowing wrapping machine (7) packing of sedimentation moisture eliminator (6); First filter cake and ammonium chloride are put into reaction in the corrosion-resistant reactor (8) according to the mass ratio of the pure substance of lime carbonate and ammonium chloride at 1: 0.87, generate calcium chloride and ammoniacal liquor and carbon dioxide, filter through second strainer (9), get second filter cake and second clear filtrate; Based on silicon-dioxide, its mass content reaches 80% in second filter cake; In second clear filtrate based on calcium chloride and ammoniacal liquor; Second clear filtrate is knocked down second carbonizer (10), with mass concentration is that 5% tensio-active agent tween 80 is handled, stir speed (S.S.) is 120r/min, and to feed the carbon dioxide containing gas volume in second carbonizer (10) be 35% mixed gas, making calcium chloride and carbonic acid gas in second clear filtrate is to carry out carbonization at 1: 0.59 according to the ratio of the quality of pure substance, carbonation reaction temperature is controlled to be 10～15 ℃ of products and filters through the 3rd strainer (12), gets the 3rd filter cake of clarifying ammonium chloride filtrate and white; The 3rd filter cake is a lime carbonate; The 3rd filter cake of white is through washing machine (13) washing, moisture eliminator (14) drying, pulverizer (15), obtains fine calcium carbonate product (18); Second filter cake is put into revolving horizontal drum reactor (16) lining with the mass ratio of the pure substance of sodium hydroxide 1: 1.51 with sodium hydroxide according to silicon-dioxide, the reaction that is hydrolyzed, and the sodium silicate aqueous solution of reaction solution body is water glass (19).
The foregoing description is preferred embodiment of the present invention, is not to be used for limiting the scope of the present invention, so all equivalences of being done with described feature of claim of the present invention and principle change or modify, all should be included within the claim scope of the present invention.
Claims (4)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101696394A CN101823738B (en) | 2010-04-30 | 2010-04-30 | Method for producing light magnesium carbonate and coproducing fine calcium carbonate and water glass by chlor-alkali salt sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101696394A CN101823738B (en) | 2010-04-30 | 2010-04-30 | Method for producing light magnesium carbonate and coproducing fine calcium carbonate and water glass by chlor-alkali salt sludge |
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| CN101823738A true CN101823738A (en) | 2010-09-08 |
| CN101823738B CN101823738B (en) | 2012-02-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9890081B2 (en) | 2015-09-02 | 2018-02-13 | Council Of Scientific & Industrial Research | Functionalized brine sludge material and a process for the preparation thereof |
| US11699533B2 (en) | 2020-10-19 | 2023-07-11 | Council Of Scientific And Industrial Research An Indian Registered Body Incorporated Under The Regn. Of Soc. Act (Act Xxi Of 1860) | Advanced lead-free radiation protection materials utilizing modified brine sludge composition and the process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1137488A (en) * | 1995-06-08 | 1996-12-11 | 福建省福州第二化工厂职工技术协会 | Process for preparing magnesium sulfate by using chlorine alkali offscum salt slurry |
| CN1297847A (en) * | 2000-12-06 | 2001-06-06 | 化学工业部连云港设计研究院 | Comprehensive utilization method of waste ammonia sode liquid and sodium sulfate containing waste liquid |
| CN1504412A (en) * | 2002-11-28 | 2004-06-16 | 欣 程 | Method for making superfine calcium carbonate using exhaust gas and liquid from ammonia-soda process for producing sodium carbonate |
| CN1554588A (en) * | 2003-12-25 | 2004-12-15 | 华东理工大学 | The process of producing superfine barium sulfate and calcium carbonate by using chlor-alkali salt mud |
-
2010
- 2010-04-30 CN CN2010101696394A patent/CN101823738B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1137488A (en) * | 1995-06-08 | 1996-12-11 | 福建省福州第二化工厂职工技术协会 | Process for preparing magnesium sulfate by using chlorine alkali offscum salt slurry |
| CN1297847A (en) * | 2000-12-06 | 2001-06-06 | 化学工业部连云港设计研究院 | Comprehensive utilization method of waste ammonia sode liquid and sodium sulfate containing waste liquid |
| CN1504412A (en) * | 2002-11-28 | 2004-06-16 | 欣 程 | Method for making superfine calcium carbonate using exhaust gas and liquid from ammonia-soda process for producing sodium carbonate |
| CN1554588A (en) * | 2003-12-25 | 2004-12-15 | 华东理工大学 | The process of producing superfine barium sulfate and calcium carbonate by using chlor-alkali salt mud |
Non-Patent Citations (1)
| Title |
|---|
| 《氯碱工业》 20060630 周莉菊等 浅谈氯碱装置区域布局及盐泥的处理方法 第3－6页 1-3 , 第6期 2 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9890081B2 (en) | 2015-09-02 | 2018-02-13 | Council Of Scientific & Industrial Research | Functionalized brine sludge material and a process for the preparation thereof |
| US11699533B2 (en) | 2020-10-19 | 2023-07-11 | Council Of Scientific And Industrial Research An Indian Registered Body Incorporated Under The Regn. Of Soc. Act (Act Xxi Of 1860) | Advanced lead-free radiation protection materials utilizing modified brine sludge composition and the process thereof |
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| Publication number | Publication date |
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| CN101823738B (en) | 2012-02-15 |
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