CN102070176A - Method for producing barium sulfate, ultra-fine light magnesium carbonate and ultra-fine light calcium carbonate simultaneously with rock salt mud - Google Patents
Method for producing barium sulfate, ultra-fine light magnesium carbonate and ultra-fine light calcium carbonate simultaneously with rock salt mud Download PDFInfo
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- CN102070176A CN102070176A CN2010101691210A CN201010169121A CN102070176A CN 102070176 A CN102070176 A CN 102070176A CN 2010101691210 A CN2010101691210 A CN 2010101691210A CN 201010169121 A CN201010169121 A CN 201010169121A CN 102070176 A CN102070176 A CN 102070176A
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- barium sulfate
- filter cake
- rock salt
- filtrate
- magnesiumcarbonate
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Abstract
The invention discloses a method for producing barium sulfate, ultra-fine light magnesium carbonate and ultra-fine light calcium carbonate simultaneously with rock salt mud, wherein the rock salt mud is the waste of the reaction that caustic soda and sodium hydroxide are used to prepare sodium chloride from rock salt; and through detections, the rock salt mud contains compounds such as barium sulfate, calcium carbonate, magnesium hydroxide, sodium chloride, sodium hydroxide and dsodium carbonate. The method of the invention utilizes chemical reactions to precipitate the compounds in the rock salt mud or generating the corresponding compounds; and products such as barium sulfate, magnesium carbonate and calcium carbonate are generated through simple centrifugation and filtration. By adopting the method, the compounds such as barium sulfate, calcium carbonate and magnesium hydroxide in the salt mud can be effectively extracted and utilized, the potential value of the salt mud can be realized and an economic and efficient way can be provided for the comprehensive utilization of the salt mud.
Description
Technical field
The present invention relates to the production method of barium sulfate, particularly, relate to a kind of method of producing the magnesiumcarbonate and the lime carbonate of barium sulfate and co-produced ultramicrofine light with the rock salt salt slurry.
Background technology
During with rock salt electrolytic refining salt, soda ash, sodium hydroxide and the bariumchloride of adding commonly used before the electrolysis, because the salt solution of rock salt contains the sulfate ion of calcium ion, magnesium ion and the negative divalence of a certain amount of two valencys, contains water-fast throw out and solvable water-soluble salt and alkali such as barium sulfate, magnesium hydroxide, lime carbonate in the salt slurry that is produced.Wherein, the mass content of each composition is respectively: barium sulfate 80%, lime carbonate 3%, magnesium hydroxide 1%, sodium-chlor 0.5%, sodium hydroxide 1%, yellow soda ash 2% etc.Obviously, barium sulfate is the main component in the rock salt salt slurry.Barium sulfate is nontoxic, and chemical property is stable, and density is bigger, has wear-resisting preferably and erosion resistance.It can be used for coatings industry, makes the stopping composition of wall and floor coating.In addition, also can be used for aspects such as glass, rubber, resin, oil production, pigment, chemical industry, medicine.Therefore, the barium sulfate that extracts in the rock salt salt slurry has huge economic implications.
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 is 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
The invention provides a kind of rock salt salt slurry and produce the method for the magnesiumcarbonate and the lime carbonate of barium sulfate and co-produced ultramicrofine light, the barium sulfate that contains in the salt slurry is effectively extracted and utilized to this method, compound such as lime carbonate, magnesium hydroxide, given full play to the potential value of salt slurry, for the comprehensive utilization of salt slurry provides cost-effective approach.
To be rock salt produce refuse behind the sodium-chlor with caustic soda and sodium hydroxide to the rock salt salt slurry, after testing, contain barium sulfate in the rock salt salt slurry, lime carbonate, magnesium hydroxide, sodium-chlor, sodium hydroxide, compounds such as yellow soda ash, the present invention utilizes chemical reaction with the above-claimed cpd precipitation or the generation corresponding compounds that contain in the rock salt salt slurry, obtains products such as barium sulfate, magnesiumcarbonate and lime carbonate through simple centrifugal and filtration.
In order to realize above-mentioned purpose, technical scheme of the present invention is: a kind of rock salt salt slurry is produced the method for the magnesiumcarbonate and the lime carbonate of barium sulfate and co-produced ultramicrofine light, comprises the steps:
A: the mass content of the lime carbonate in the conversion rock salt salt slurry;
B: is 1: 1.88～2.28 to put in corrosion resistant first reactor (1) with bariumchloride by the ratio of lime carbonate and bariumchloride pure substance quality with the rock salt salt slurry, carries out chemical reaction, generates the mixture of several muriates and barium salt; Particularly, in this step, bariumchloride generates barium carbonate and calcium chloride with calcium carbonate reaction respectively, generates hydrated barta and magnesium chloride with the magnesium hydroxide reaction, generates hydrated barta and sodium-chlor with the sodium hydroxide reaction, generates barium carbonate and sodium-chlor with the yellow soda ash reaction;
C: the mixture of step B gained is filtered through first strainer (2), obtain clarifying first filtrate and first filter cake; Contain barium carbonate and hydrated barta in described first filter cake; Contain calcium chloride, magnesium chloride and sodium-chlor in described first filtrate, when the bariumchloride among the step B is excessive, also contain bariumchloride;
D: first filter cake and an amount of sulfuric acid of step C gained are dropped in second reactor (3), carry out chemical reaction, generate barium sulfate, carbonic acid gas and water; This moment, carbon dioxide was overflowed, and the solubleness of barium sulfate in water is extremely low, thus the precipitation of formation;
E: with step D reaction products resulting through second strainer (4) filter second filtrate and second filter cake; Main component is a barium sulfate in second filter cake;
F: second filter cake of step F gained is through first washing whizzer (5) washing dehydration, first drying machine (6) drying, and first pulverizer (7) is pulverized, and is packaged to be highly purified barium sulfate product (8);
G: clarifying first filtrate that step C is obtained is that 5～8% tensio-active agents are handled with mass concentration, and stir speed (S.S.) is 200～320r/min;
H: first filtrate after the tensio-active agent of step G gained handled is injected into carbonizer (9) lining with carbonic acid gas and ammoniacal liquor successively with mass ratio 1: 0.2～0.6: 0.12～0.52 and carries out carburizing reagent, the mixture of generation precipitation of calcium carbonate, magnesiumcarbonate precipitation, sodium-chlor and ammonium chloride;
I: the mixture of step H gained is filtered through the 3rd strainer (10), obtain clarifying the 3rd filtrate and the 3rd filter cake; Mainly contain lime carbonate and magnesiumcarbonate in described the 3rd filter cake;
J: described the 3rd filter cake is through second washing whizzer (11) washing dehydration, second drying machine (12) drying, and the 3rd pulverizer (13) is pulverized, and is packaged to be the mixture (14) of light calcium carbonate and magnesiumcarbonate.
Described second filtrate is discharged after the environmental protection comprehensive treating process.
Described the 3rd filtrate cycle utilization.
Described tensio-active agent is selected from emulsifiable concentrate, tween 80 and the mixture of the two.
Aforesaid method relates to chemical equation:
CaCO
3+BaCl
2＝＝＝＝BaCO
3+CaCl
2
Mg(OH)
2+BaCl
2＝＝＝＝Ba(OH)
2+MgCl
2
2NaOH+BaCl
2＝＝＝＝Ba(OH)
2+2NaCl
Na
2CO
3+BaCl
2＝＝＝＝BaCO
3+2NaCl
BaCO
3+H
2SO
4＝＝＝＝BaSO
4+CO
2+H
2O
Ba(OH)
2+H
2SO
4＝＝＝＝BaSO
4+2H
2O
CaCl
2+CO
2+2NH
4OH＝＝＝＝CaCO
3+2NH
4Cl+H
2O
MgCl
2+CO
2+2NH
4OH＝＝＝＝MgCO
3+2NH
4Cl+H
2O
Rock salt salt slurry of the present invention is produced the method for the magnesiumcarbonate and the lime carbonate of barium sulfate and co-produced ultramicrofine light, effectively extract and utilized compounds such as the barium that contains in the salt slurry, calcium, magnesium, 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 that rock salt salt slurry of the present invention produces the technical process of the method for the magnesiumcarbonate of barium sulfate and co-produced ultramicrofine light and lime carbonate, wherein:
(1) first reactor, (2) first strainers filter, (3) second reactors,
(4) second strainers, (5) first washing whizzers, (6) first drying machines,
(7) first pulverizers, (8) barium sulfate product, (9) carbonizer, (10) the 3rd strainers,
(11) second washing whizzers, (12) second drying machines, (13) second pulverizers,
(14) mixture of light calcium carbonate and magnesiumcarbonate.
Embodiment
Rock salt salt slurry of the present invention is produced the magnesiumcarbonate of barium sulfate and co-produced ultramicrofine light and the method for lime carbonate is described further and illustrates below in conjunction with specific embodiment.
Embodiment one
A kind of rock salt salt slurry is produced the method for the magnesiumcarbonate and the lime carbonate of barium sulfate and co-produced ultramicrofine light, comprises the steps: to convert the calcium carbonate content in the rock salt salt slurry; The rock salt salt slurry that will contain 100kg lime carbonate is to put in corrosion resistant first reactor (1) at 1: 1.88 with bariumchloride by the ratio of lime carbonate and bariumchloride pure substance quality, carries out chemical reaction, generates the mixture of several muriates and barium salt; Particularly, in this step, bariumchloride generates barium carbonate and calcium chloride with calcium carbonate reaction respectively, generates hydrated barta and magnesium chloride with the magnesium hydroxide reaction, generates hydrated barta and sodium-chlor with the sodium hydroxide reaction, generates barium carbonate and sodium-chlor with the yellow soda ash reaction; Said mixture is filtered through first strainer (2), obtain clarifying first filtrate and first filter cake; Contain barium carbonate and hydrated barta in described first filter cake; Contain calcium chloride, magnesium chloride and sodium-chlor in described first filtrate, when the bariumchloride among the step B is excessive, also contain bariumchloride; First filter cake and an amount of sulfuric acid are dropped in second reactor (3), carry out chemical reaction, generate barium sulfate, carbonic acid gas and water; This moment, carbon dioxide was overflowed, and the solubleness of barium sulfate in water is extremely low, thus the precipitation of formation; With above-mentioned reaction product through second strainer (4) filter second filtrate and second filter cake; Described second filtrate is discharged after the environmental protection comprehensive treating process; Main component is a barium sulfate in second filter cake; Second filter cake is through washing machine (5) washing dehydration, drying machine (6) drying, and pulverizer (7) is pulverized, and is packaged to be highly purified barium sulfate product (8).
Is that 5% tensio-active agent emulsifiable concentrate is handled with first filtrate with mass concentration, stir speed (S.S.) is 200r/min, then successively be injected into carbonizer (9) lining at 1: 0.2: 0.12 with mass ratio and carry out carburizing reagent with carbonic acid gas and ammoniacal liquor, described carbonic acid gas is a pure carbon dioxide gas, carbonation reaction temperature is 10～15 ℃, generates the mixture of precipitation of calcium carbonate, magnesiumcarbonate precipitation, sodium-chlor and ammonium chloride; The mixture of gained is filtered through the 3rd strainer (10), obtain clarifying the 3rd filtrate and the 3rd filter cake; Described the 3rd filtrate cycle utilization; Mainly contain lime carbonate and magnesiumcarbonate in described the 3rd filter cake; Described the 3rd filter cake is through washing machine (11) washing dehydration, drying machine (12) drying, and pulverizer (13) is pulverized, and is packaged to be the mixture (14) of light calcium carbonate and magnesiumcarbonate.
Embodiment two
A kind of rock salt salt slurry is produced the method for the magnesiumcarbonate and the lime carbonate of barium sulfate and co-produced ultramicrofine light, comprises the steps: to convert the calcium carbonate content in the rock salt salt slurry; The rock salt salt slurry that will contain 500kg lime carbonate is to put in corrosion resistant first reactor (1) at 1: 2.28 with bariumchloride by the ratio of lime carbonate and bariumchloride pure substance quality, carries out chemical reaction, generates the mixture of several muriates and barium salt; Particularly, in this step, bariumchloride generates barium carbonate and calcium chloride with calcium carbonate reaction respectively, generates hydrated barta and magnesium chloride with the magnesium hydroxide reaction, generates hydrated barta and sodium-chlor with the sodium hydroxide reaction, generates barium carbonate and sodium-chlor with the yellow soda ash reaction; Said mixture is filtered through first strainer (2), obtain clarifying first filtrate and first filter cake; Contain barium carbonate and hydrated barta in described first filter cake; Contain calcium chloride, magnesium chloride and sodium-chlor in described first filtrate, when the bariumchloride among the step B is excessive, also contain bariumchloride; First filter cake and an amount of sulfuric acid are dropped in second reactor (3), carry out chemical reaction, generate barium sulfate, carbonic acid gas and water; This moment, carbon dioxide was overflowed, and the solubleness of barium sulfate in water is extremely low, thus the precipitation of formation; With above-mentioned reaction product through second strainer (4) filter second filtrate and second filter cake; Described second filtrate is discharged after the environmental protection comprehensive treating process; Main component is a barium sulfate in second filter cake; Second filter cake is through washing machine (5) washing dehydration, drying machine (6) drying, and pulverizer (7) is pulverized, and is packaged to be highly purified barium sulfate product (8).
Is that 6% tensio-active agent is handled with first filtrate with mass concentration, wherein containing mass concentration in the tensio-active agent and be 3% tween 80 and mass concentration is 3% emulsifiable concentrate, stir speed (S.S.) is 280r/min, then successively be injected into carbonizer (9) lining at 1: 0.6: 0.52 with mass ratio and carry out carburizing reagent with carbonic acid gas and ammoniacal liquor, temperature of reaction is controlled at 35～40 ℃, generates the mixture of precipitation of calcium carbonate, magnesiumcarbonate precipitation, sodium-chlor and ammonium chloride; The mixture of gained is filtered through the 3rd strainer (10), obtain clarifying the 3rd filtrate and the 3rd filter cake; Described the 3rd filtrate cycle utilization; Mainly contain lime carbonate and magnesiumcarbonate in described the 3rd filter cake; Described the 3rd filter cake is through washing machine (11) washing dehydration, drying machine (12) drying, and pulverizer (13) is pulverized, and is packaged to be the mixture (14) of light calcium carbonate and magnesiumcarbonate.
Embodiment three
A kind of rock salt salt slurry is produced the method for the magnesiumcarbonate and the lime carbonate of barium sulfate and co-produced ultramicrofine light, comprises the steps: to convert the calcium carbonate content in the rock salt salt slurry; The rock salt salt slurry that will contain 500kg lime carbonate is to put in corrosion resistant first reactor (1) at 1: 2.00 with bariumchloride by the ratio of lime carbonate and bariumchloride pure substance quality, carries out chemical reaction, generates the mixture of several muriates and barium salt; Particularly, in this step, bariumchloride generates barium carbonate and calcium chloride with calcium carbonate reaction respectively, generates hydrated barta and magnesium chloride with the magnesium hydroxide reaction, generates hydrated barta and sodium-chlor with the sodium hydroxide reaction, generates barium carbonate and sodium-chlor with the yellow soda ash reaction; Said mixture is filtered through first strainer (2), obtain clarifying first filtrate and first filter cake; Contain barium carbonate and hydrated barta in described first filter cake; Contain calcium chloride, magnesium chloride and sodium-chlor in described first filtrate, when the bariumchloride among the step B is excessive, also contain bariumchloride; First filter cake and an amount of sulfuric acid are dropped in second reactor (3), carry out chemical reaction, generate barium sulfate, carbonic acid gas and water; This moment, carbon dioxide was overflowed, and the solubleness of barium sulfate in water is extremely low, thus the precipitation of formation; With above-mentioned reaction product through second strainer (4) filter second filtrate and second filter cake; Described second filtrate is discharged after the environmental protection comprehensive treating process; Main component is a barium sulfate in second filter cake; Second filter cake is through washing machine (5) washing dehydration, drying machine (6) drying, and pulverizer (7) is pulverized, and is packaged to be highly purified barium sulfate product (8).
Is that 8% tensio-active agent is handled with first filtrate with mass concentration, wherein, contain mass concentration in the tensio-active agent and be 8% polysorbas20, stir speed (S.S.) is 220r/min, then successively be injected into carbonizer (9) lining at 1: 0.4: 0.32 with mass ratio and carry out carburizing reagent with carbonic acid gas and ammoniacal liquor, temperature of reaction is controlled at 0～5 ℃, generates the mixture of precipitation of calcium carbonate, magnesiumcarbonate precipitation, sodium-chlor and ammonium chloride; The mixture of gained is filtered through the 3rd strainer (10), obtain clarifying the 3rd filtrate and the 3rd filter cake; Described the 3rd filtrate cycle utilization; Mainly contain lime carbonate and magnesiumcarbonate in described the 3rd filter cake; Described the 3rd filter cake is through washing machine (11) washing dehydration, drying machine (12) drying, and pulverizer (13) is pulverized, and is packaged to be the mixture (14) of light calcium carbonate and magnesiumcarbonate.
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)
1. the method that the rock salt salt slurry is produced the magnesiumcarbonate and the lime carbonate of barium sulfate and co-produced ultramicrofine light is characterized in that, comprises the steps:
A: the mass content of the lime carbonate in the conversion rock salt salt slurry;
B: is 1: 1.88～2.28 to put in corrosion resistant first reactor (1) with bariumchloride by the ratio of lime carbonate and bariumchloride pure substance quality with the rock salt salt slurry, carries out chemical reaction, generates the mixture of several muriates and barium salt;
C: the mixture of step B gained is filtered through first strainer (2), obtain clarifying first filtrate and first filter cake;
D: first filter cake and an amount of sulfuric acid of step C gained are dropped in second reactor (3), carry out chemical reaction, generate barium sulfate, carbonic acid gas and water;
E: with step D reaction products resulting through second strainer (4) filter second filtrate and second filter cake;
F: second filter cake of step F gained is through first washing whizzer (5) washing dehydration, first drying machine (6) drying, and first pulverizer (7) is pulverized, and is packaged to be highly purified barium sulfate product (8);
G: clarifying first filtrate that step C is obtained is that 5～8% tensio-active agents are handled with mass concentration, and stir speed (S.S.) is 200～320r/min;
H: first filtrate after the tensio-active agent of step G gained handled is injected into carbonizer (9) lining with carbonic acid gas and ammoniacal liquor successively with mass ratio 1: 0.2～0.6: 0.12～0.52 and carries out carburizing reagent, the mixture of generation precipitation of calcium carbonate, magnesiumcarbonate precipitation, sodium-chlor and ammonium chloride;
I: the mixture of step H gained is filtered through the 3rd strainer (10), obtain clarifying the 3rd filtrate and the 3rd filter cake; Mainly contain lime carbonate and magnesiumcarbonate in described the 3rd filter cake;
J: described the 3rd filter cake is through second washing whizzer (11) washing dehydration, second drying machine (12) drying, and the 3rd pulverizer (13) is pulverized, and is packaged to be the mixture (14) of light calcium carbonate and magnesiumcarbonate.
2. rock salt salt slurry as claimed in claim 1 is produced the method for the magnesiumcarbonate and the lime carbonate of barium sulfate and co-produced fine and lightweight, it is characterized in that, described second filtrate is discharged after the environmental protection comprehensive treating process.
3. rock salt salt slurry as claimed in claim 1 is produced the method for the magnesiumcarbonate and the lime carbonate of barium sulfate and co-produced ultramicrofine light, it is characterized in that, described the 3rd filtrate cycle utilization.
4. rock salt salt slurry as claimed in claim 1 is produced the method for the magnesiumcarbonate and the lime carbonate of barium sulfate and co-produced ultramicrofine light, it is characterized in that, described tensio-active agent is selected from emulsifiable concentrate, tween 80 and the mixture of the two.
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|---|---|---|---|
| CN2010101691210A CN102070176A (en) | 2010-04-30 | 2010-04-30 | Method for producing barium sulfate, ultra-fine light magnesium carbonate and ultra-fine light calcium carbonate simultaneously with rock salt mud |
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| CN2010101691210A CN102070176A (en) | 2010-04-30 | 2010-04-30 | Method for producing barium sulfate, ultra-fine light magnesium carbonate and ultra-fine light calcium carbonate simultaneously with rock salt mud |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496093A (en) * | 2014-11-04 | 2015-04-08 | 江苏大学 | Method for performing purification treatment on titanium white wastewater by utilizing salt slurry |
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2010
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496093A (en) * | 2014-11-04 | 2015-04-08 | 江苏大学 | Method for performing purification treatment on titanium white wastewater by utilizing salt slurry |
| CN104496093B (en) * | 2014-11-04 | 2017-01-25 | 江苏大学 | Method for performing purification treatment on titanium white wastewater by utilizing salt slurry |
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Application publication date: 20110525 |