CN101898778A - Method for producing superfine barium sulfate and strontium sulfide by using barium sulfide waste slag - Google Patents
Method for producing superfine barium sulfate and strontium sulfide by using barium sulfide waste slag Download PDFInfo
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- CN101898778A CN101898778A CN2010102440296A CN201010244029A CN101898778A CN 101898778 A CN101898778 A CN 101898778A CN 2010102440296 A CN2010102440296 A CN 2010102440296A CN 201010244029 A CN201010244029 A CN 201010244029A CN 101898778 A CN101898778 A CN 101898778A
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Abstract
The invention provides a method for producing superfine barium sulfate and strontium sulfide by using barium sulfide waste slag. The method comprises the following steps of: converting barium and strontium in the barium sulfide waste slag into barium chloride and strontium chloride by using hydrochloric acid, reacting barium sulfate and strontium chloride to obtain water-insoluble strontium sulfate sediment and water-soluble barium chloride, filtering the solution to obtain a strontium sulfate product, treating the barium chloride by using a surfactant, then reacting the treated barium chloride and sulfuric acid to obtain superfine crystal barium sulfate sediment and hydrochloric acid solution, and filtering the solution to obtain a superfine barium sulfate product the hydrochloric acid solution, wherein the hydrochloric acid solution can be reused. The method has simple operation and low equipment investment, and is an economic and practical method for converting effective ingredients in the barium sulfide waste slag into industrially available substances.
Description
Technical field
The present invention relates to the disposal of three wastes of inorganic chemical industry thiocarbamide manufacturing and utilize technical field, especially prepare the method for fine barium sulfate and co-produced strontium sulfide with barium sulfide waste residue.
Background technology
The production method of thiocarbamide is a lot, wherein traditional method is to utilize barium sulphide and sulfuric acid reaction to generate hydrogen sulfide and barium sulfate precipitate, hydrogen sulfide absorbs through the milk of lime negative pressure and makes the hydrogen sulfide calcium solution, then react with calcium cyanamide again, the mol ratio of calcium sulfhydrate and calcium cyanamide is 1: 5, under constantly stirring, temperature of reaction is (80 ± 5) ℃, reaction times is 3h, through negative pressure filtration, can generate thiocarbamide liquid, again through evaporation, filtration, cooling, crystallization, promptly get the crystal thiocarbamide, centrifugal drying gets product.Reaction equation is as follows:
BaS+H
2SO
4→BaSO
4↓+H
2S↑
2H
2S+Ca(OH)
2→Ca(SH)
2+2H
2O
2CaCN
2+Ca(SH
2)
2+6H
2O→2(NH
2)
2CS+3Ca(OH)
2
Aforesaid method is produced thiocarbamide, and its main industrial residue is exactly the barium sulfate waste residue, and according to one's analysis, one ton of thiocarbamide of every production will produce 9.5 tons barium sulfide waste residue, discovers, also contains a large amount of barium sulphides and Preparation of Metallic Strontium in the barium sulfate waste residue.
If with the above-mentioned barium sulfate waste residue of hydrochloric acid purifying, then not only can all take off insoluble impurity, can also form solution such as more purified bariumchloride and strontium chloride.Based on this discovery, the applicant has explored the method for preparing fine barium sulfate and co-produced Strontium Sulphate and Sodium Sulphide with barium sulfide waste residue through the experiment and the research of science.
Summary of the invention
The objective of the invention is to, the method for preparing fine barium sulfate and co-produced Strontium Sulphate with barium sulfide waste residue is provided, this method is converted into bariumchloride and strontium chloride with hydrochloric acid with barium in the barium sulfide waste residue and strontium, then, again with barium sulfate and strontium chloride reaction, obtain water-fast Strontium Sulphate precipitation and water-soluble bariumchloride, filter, obtain the Strontium Sulphate product, and bariumchloride is after tensio-active agent is handled, again with sulfuric acid reaction, obtain micro crystal barium sulfate precipitate and hydrochloric acid soln, filter, promptly get fine barium sulfate product and hydrochloric acid soln, hydrochloric acid soln can reuse, this method is simple to operate, facility investment is few, and the effective constituent in the barium sulfide waste residue is converted into industrial utilizable material, is an economic and practical method.
Technical scheme of the present invention is as follows: barium sulfide waste residue prepares the method for fine barium sulfate and co-produced Strontium Sulphate, this method is converted into muriates such as bariumchloride and strontium chloride with hydrochloric acid with barium in the barium sulfide waste residue and strontium, then, again with barium sulfate and strontium chloride reaction, obtain water-fast Strontium Sulphate precipitation and water-soluble bariumchloride, filter, obtain the Strontium Sulphate product, and bariumchloride again with sulfuric acid reaction, obtains micro crystal barium sulfate precipitate and hydrochloric acid soln after tensio-active agent is handled, filter, promptly get fine barium sulfate product and hydrochloric acid soln, the recycling of hydrochloric acid soln retrieval system, this method comprises following concrete steps:
Steps A: the molar content of barium and the molar content of strontium in the conversion barium sulfide waste residue, and configuration barium sulfide waste residue suspension liquid;
Step B: with barium sulfide waste residue suspension liquid and hydrochloric acid according to the ratio of the molar content sum of barium and strontium and the molar weight of hydrogenchloride be 1: 1.6～2.4 successively put into first corrosion-resistant reactor (1) lining, under stirring slowly, carry out chemical reaction, generate muriate and hydrogen sulfide such as bariumchloride and strontium chloride;
Step C: after treating that hydrogen sulfide is overflowed, step B gained reaction product is filtered through first strainer (2), remove insoluble impurities, obtain the solution of clarifying chloride;
Step D: preparation barium sulfate powder, and be 1: 0.8～1.2 the solution of the chloride of barium sulfate and step C gained sent in the reactor (3) to carry out chemical reaction according to the ratio of the molar weight of the molar weight of strontium chloride and barium sulfate, obtain the mixture of Strontium Sulphate and bariumchloride;
Step e: step D gained reaction product is filtered through second strainer (4), filter the sulfur acid strontium filter cake and contain the solution of bariumchloride;
Step F: with the filter cake of the sulfur acid strontium of step e gained through first washing machine (5) washing, first moisture eliminator (6) drying, first pulverizer (7) is pulverized, and obtains Strontium Sulphate product (8);
Step G: with the solution mass concentration that contains bariumchloride of step e gained is that 1～4% tensio-active agent is handled, then successively drop in second corrosion-resistant reactor (9) than 1: 0.8～1.2 with bariumchloride and vitriolic molar weight and carry out chemical reaction with sulfuric acid, speed with 200-320r/min stirs simultaneously, obtains the mixture of micro crystal barium sulfate precipitate and hydrochloric acid;
Step H: the micro crystal barium sulfate precipitate of step G gained and the mixture of hydrochloric acid are filtered through ultrafiltration membrance filter device (10), obtain clarifying hydrochloric acid soln (11) and fine barium sulfate precipitate;
Step (I): use washings through second washing whizzer (12) washing, second moisture eliminator (13) drying the fine barium sulfate precipitate of step H gained, obtain fine barium sulfate product (14).
The hydrogen sulfide of step B gained feeds surplus the 3rd corrosion-resistant reactor (18) lining that soda ash solution is arranged, and the mol ratio of maintenance hydrogen sulfide and yellow soda ash is 1: 0.8～1.2, under the stirring slowly, hydrogen sulfide and yellow soda ash reaction generate the mixture of Containing Sulfur sodium, carbonic acid gas and water.
After the mixture of described Containing Sulfur sodium, carbonic acid gas and water treats that carbonic acid gas is overflowed, concentrate with distiller (15) distillation, when liquid reaches capacity, cooling again, separate out sodium sulfide crystal this moment, filter, promptly get Sodium Sulphide crystal product (17) through the 3rd strainer (16).
Buried or the burning of step C gained insoluble impurities.
The clarifying hydrochloric acid soln (11) of step H gained returns step B recycling.
The described tensio-active agent of step G is emulsifiable concentrate, tween 80 and the mixture of the two.
The proportion of the described washings of step (I) is less than the proportion of barium sulfate.
Before disposing described barium sulfate waste residue suspension liquid, earlier described barium sulfate waste residue being pulverized is 40 orders.
The related chemical principle of the application is:
BaS+2HCl＝＝＝＝＝BaCl
2+H
2S
SrCl
2+BaSO
4＝＝＝＝＝SrSO
4+BaCl
2
BaCl
2+H
2SO
4＝＝＝＝＝BaSO
4+2HCl
H
2S+Na
2CO
3＝＝＝＝＝Na
2S+CO
2+H
2O
Beneficial effect of the present invention is: barium sulfide waste residue of the present invention prepares the method for fine barium sulfate and co-produced Strontium Sulphate, utilize hydrochloric acid that barium in the barium sulfate waste residue and strontium are converted into water-soluble bariumchloride and strontium chloride cleverly, then, utilize barium sulfate strontium chloride to be converted into Strontium Sulphate and the water-soluble bariumchloride that is insoluble in water, separate Strontium Sulphate and bariumchloride, utilize the reaction of sulfuric acid and bariumchloride again, obtain being insoluble in the barium sulfate and the hydrochloric acid of water, the hydrochloric acid recycling, and barium sulfate precipitate is separated out, and obtains barium sulfate product.
Barium sulfide waste residue of the present invention prepares the method for fine barium sulfate and co-produced Strontium Sulphate, through the chemical reaction between the compound, and the difference of compound dissolution character, pass through filtering separation, can realize that this method is simple to operate, facility investment is few, and the effective constituent in the barium sulfide waste residue is converted into industrial utilizable material, be an economic and practical method.
Description of drawings
Fig. 1 prepares the process flow sheet of the method for fine barium sulfate and co-produced Strontium Sulphate for barium sulfide waste residue of the present invention, wherein, (1) first corrosion-resistant reactor, (2) first strainers filter, (3) reactor, (4) second strainers, (5) first washing machines, (6) first moisture eliminators, (7) first pulverizers, (8) Strontium Sulphate product, (9) second corrosion-resistant reactors, (10) ultrafiltration membrance filter device, (11) hydrochloric acid soln, (12) second washing whizzers, (13) second moisture eliminators, (14) fine barium sulfate product.
Fig. 2 prepares the process flow sheet that in the method for fine barium sulfate and co-produced Strontium Sulphate hydrogen sulfide is converted into sodium sulphite for barium sulfide waste residue of the present invention, wherein, (15) distiller, (16) the 3rd strainers, (17) Sodium Sulphide crystal product, (18) the 3rd corrosion-resistant reactors.
Embodiment
Embodiment 1:
With reference to Fig. 1, barium sulfide waste residue prepares the method for fine barium sulfate and co-produced Strontium Sulphate, method comprises following concrete steps, weighing 500kg barium sulfide waste residue, the mass content of barium sulphide is 15% in the conversion barium sulfide waste residue, and the mass content of strontium is 3%, then the molar content of the barium of calculating according to the molar mass 169.4g/m of barium sulphide be 442.7 and the molar mass 88 of strontium calculate to such an extent that the molar content of strontium is 187.5, earlier described barium sulfate waste residue being pulverized is 40 orders, configuration barium sulfide waste residue suspension liquid; With barium sulfide waste residue suspension liquid and hydrochloric acid according to the ratio of the molar content sum of barium and strontium and the molar weight of hydrogenchloride be 1: 1.6 successively put into first corrosion-resistant reactor (1) lining, under stirring slowly, carry out chemical reaction, generate 354.2 moles of bariumchlorides and 150 moles of muriate and 354.2 mole of hydrogen sulfide gas such as strontium chloride; After treating that hydrogen sulfide is overflowed, the gained reaction product is filtered through first strainer (2), remove insoluble impurities, obtain the solution of clarifying chloride, insoluble impurities burns; Preparation barium sulfate powder, according to the ratio of the molar weight of the molar weight of strontium chloride and barium sulfate is the solution of chloride and barium sulfate to be sent in the reactor (3) in 1: 0.8 to carry out chemical reaction, obtains containing the mixture of the bariumchloride of 120 mol sulfuric acid strontiums and 465.2 moles; The mixture of Strontium Sulphate and bariumchloride is filtered through second strainer (4), filter the sulfur acid strontium filter cake and contain the solution of bariumchloride; The filter cake of sulfur acid strontium is washed through first washing machine (5), first moisture eliminator (6) drying, first pulverizer (7) is pulverized, and obtains containing 120 mol sulfuric acid strontium products (8), and wherein the pure substance quality of Strontium Sulphate is 22.08kg; The solution mass concentration that will contain bariumchloride is 4% tensio-active agent emulsifiable concentrate processing, then successively drop in second corrosion-resistant reactor (9) than 1: 0.8 with bariumchloride and vitriolic molar weight and carry out chemical reaction with sulfuric acid, speed with 300r/min stirs simultaneously, obtains the mixture of micro crystal barium sulfate precipitate and hydrochloric acid; The mixture of micro crystal barium sulfate precipitate and hydrochloric acid is filtered through ultrafiltration membrance filter device (10), obtain clarifying hydrochloric acid soln (11) and fine barium sulfate precipitate; Use washings water through second washing whizzer (12) washing, second moisture eliminator (13) drying fine barium sulfate precipitate, obtain fine barium sulfate product (14), the molar weight of the barium sulfate that it contains is 372.16, and the pure substance quality is 86.86kg.
With reference to Fig. 2,354.2 moles hydrogen sulfide of gained feeds surplus the 3rd corrosion-resistant reactor (18) lining that soda ash solution is arranged, and the mol ratio of maintenance hydrogen sulfide and yellow soda ash is 1: 0.8, under the stirring slowly, hydrogen sulfide and yellow soda ash reaction generate the mixture of Containing Sulfur sodium, carbonic acid gas and water.After the mixture of described Containing Sulfur sodium, carbonic acid gas and water treats that carbonic acid gas is overflowed, concentrate with distiller (15) distillation, when liquid reaches capacity, cooling again, separate out sodium sulfide crystal this moment, filter, promptly get Sodium Sulphide crystal product (17) through the 3rd strainer (16), the molar weight of the sodium sulphite that it contains is 283.36, and the pure substance mass content is 9.63kg.
Embodiment 2:
With reference to Fig. 1, barium sulfide waste residue prepares the method for fine barium sulfate and co-produced Strontium Sulphate, method comprises following concrete steps, weighing 500kg barium sulfide waste residue, the mass content of barium sulphide is 15% in the conversion barium sulfide waste residue, and the mass content of strontium is 3%, then the molar content of the barium of calculating according to the molar mass 169.4g/m of barium sulphide be 442.7 and the molar mass 88 of strontium calculate to such an extent that the molar content of strontium is 187.5, earlier described barium sulfate waste residue being pulverized is 40 orders, configuration barium sulfide waste residue suspension liquid; With barium sulfide waste residue suspension liquid and hydrochloric acid according to the ratio of the molar content sum of barium and strontium and the molar weight of hydrogenchloride be 1: 2 successively put into first corrosion-resistant reactor (1) lining, under stirring slowly, carry out chemical reaction, generate 442.7 moles of bariumchlorides and 187.5 moles of muriate and 442.7 mole of hydrogen sulfide gas such as strontium chloride; After treating that hydrogen sulfide is overflowed, the gained reaction product is filtered through first strainer (2), remove insoluble impurities, obtain the solution of clarifying chloride, insoluble impurities is buried in underground; Preparation barium sulfate powder, according to the ratio of the molar weight of the molar weight of strontium chloride and barium sulfate is the solution of chloride and barium sulfate to be sent in the reactor (3) in 1: 1 to carry out chemical reaction, obtains containing the mixture of the bariumchloride of 187.5 mol sulfuric acid strontiums and 629.6 moles; The mixture of Strontium Sulphate and bariumchloride is filtered through second strainer (4), filter the sulfur acid strontium filter cake and contain the solution of bariumchloride; The filter cake of sulfur acid strontium is washed through first washing machine (5), first moisture eliminator (6) drying, first pulverizer (7) is pulverized, and obtains containing 187.5 mol sulfuric acid strontium products (8), and wherein the pure substance quality of Strontium Sulphate is 34.5kg; The solution mass concentration that will contain bariumchloride is 1% tensio-active agent tween processing, then successively drop in second corrosion-resistant reactor (9) than 1: 1 with bariumchloride and vitriolic molar weight and carry out chemical reaction with sulfuric acid, speed with 320r/min stirs simultaneously, obtains the mixture of micro crystal barium sulfate precipitate and hydrochloric acid; The mixture of micro crystal barium sulfate precipitate and hydrochloric acid is filtered through ultrafiltration membrance filter device (10), obtain clarifying hydrochloric acid soln (11) and fine barium sulfate precipitate; Use washings through second washing whizzer (12) washing, second moisture eliminator (13) drying fine barium sulfate precipitate, obtain fine barium sulfate product (14), the molar weight of the barium sulfate that it contains is 629.6, and the pure substance quality is 146.94kg.
With reference to Fig. 2,442.7 moles hydrogen sulfide of gained feeds surplus the 3rd corrosion-resistant reactor (18) lining that soda ash solution is arranged, and to keep the hydrogen sulfide and the mol ratio of yellow soda ash be 1: 1, and under the stirring slowly, hydrogen sulfide and yellow soda ash react the mixture of generation Containing Sulfur sodium, carbonic acid gas and water.After the mixture of described Containing Sulfur sodium, carbonic acid gas and water treats that carbonic acid gas is overflowed, concentrate with distiller (15) distillation, when liquid reaches capacity, cooling again, separate out sodium sulfide crystal this moment, filter, promptly get Sodium Sulphide crystal product (17) through the 3rd strainer (16), the molar weight of the sodium sulphite that it contains is 442.7, and the pure substance mass content is 15.05kg.
Embodiment 3:
With reference to Fig. 1, barium sulfide waste residue prepares the method for fine barium sulfate and co-produced Strontium Sulphate, method comprises following concrete steps, weighing 500kg barium sulfide waste residue, the mass content of barium sulphide is 15% in the conversion barium sulfide waste residue, and the mass content of strontium is 3%, then the molar content of the barium of calculating according to the molar mass 169.4g/m of barium sulphide be 442.7 and the molar mass 88 of strontium calculate to such an extent that the molar content of strontium is 187.5, earlier described barium sulfate waste residue being pulverized is 40 orders, configuration barium sulfide waste residue suspension liquid; With barium sulfide waste residue suspension liquid and hydrochloric acid according to the ratio of the molar content sum of barium and strontium and the molar weight of hydrogenchloride be 1: 2.4 successively put into first corrosion-resistant reactor (1) lining, under stirring slowly, carry out chemical reaction, generate 442.7 moles of bariumchlorides and 187.5 moles of muriate and 442.7 mole of hydrogen sulfide gas such as strontium chloride; After treating that hydrogen sulfide is overflowed, the gained reaction product is filtered through first strainer (2), remove insoluble impurities, obtain the solution of clarifying chloride, insoluble impurities burns; Preparation barium sulfate powder, according to the ratio of the molar weight of the molar weight of strontium chloride and barium sulfate is the solution of chloride and barium sulfate to be sent in the reactor (3) in 1: 1.2 to carry out chemical reaction, obtains containing the mixture of the bariumchloride of 187.5 mol sulfuric acid strontiums and 629.6 moles; The mixture of Strontium Sulphate and bariumchloride is filtered through second strainer (4), filter the sulfur acid strontium filter cake and contain the solution of bariumchloride; The filter cake of sulfur acid strontium is washed through first washing machine (5), first moisture eliminator (6) drying, first pulverizer (7) is pulverized, and obtains containing 187.5 mol sulfuric acid strontium products (8), and wherein the pure substance quality of Strontium Sulphate is 34.5kg; The solution mass concentration that will contain bariumchloride is 3% tensio-active agent processing, it contains mass concentration is that 1.5% emulsifiable concentrate and mass concentration are 1.5% tween, then successively drop in second corrosion-resistant reactor (9) than 1: 1.2 with bariumchloride and vitriolic molar weight and carry out chemical reaction with sulfuric acid, speed with 220r/min stirs simultaneously, obtains the mixture of micro crystal barium sulfate precipitate and hydrochloric acid; The mixture of micro crystal barium sulfate precipitate and hydrochloric acid is filtered through ultrafiltration membrance filter device (10), obtain clarifying hydrochloric acid soln (11) and fine barium sulfate precipitate, the hydrochloric acid Returning utilization; Use washings through second washing whizzer (12) washing, second moisture eliminator (13) drying fine barium sulfate precipitate, obtain fine barium sulfate product (14), the molar weight of the barium sulfate that it contains is 629.6, and the pure substance quality is 146.94kg.
With reference to Fig. 2,442.7 moles hydrogen sulfide of gained feeds surplus the 3rd corrosion-resistant reactor (18) lining that soda ash solution is arranged, and the mol ratio of maintenance hydrogen sulfide and yellow soda ash is 1: 1.2, under the stirring slowly, hydrogen sulfide and yellow soda ash reaction generate the mixture of Containing Sulfur sodium, carbonic acid gas and water.After the mixture of described Containing Sulfur sodium, carbonic acid gas and water treats that carbonic acid gas is overflowed, concentrate with distiller (15) distillation, when liquid reaches capacity, cooling again, separate out sodium sulfide crystal this moment, filter, promptly get Sodium Sulphide crystal product (17) through the 3rd strainer (16), the molar weight of the sodium sulphite that it contains is 442.7, and the pure substance mass content is 15.05kg.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, its framework form can be flexible and changeable, can the subseries product.Just make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of being submitted to.
Claims (8)
1. the method for preparing fine barium sulfate and co-produced Strontium Sulphate with barium sulfide waste residue, it is characterized in that, this method is converted into bariumchloride and strontium chloride with hydrochloric acid with barium in the barium sulfide waste residue and strontium, then, again with barium sulfate and strontium chloride reaction, obtain water-fast Strontium Sulphate precipitation and water-soluble bariumchloride, filter, obtain the Strontium Sulphate product, and bariumchloride is after tensio-active agent is handled, again with sulfuric acid reaction, obtain micro crystal barium sulfate precipitate and hydrochloric acid soln, filter, promptly get fine barium sulfate product and hydrochloric acid soln, the recycling of hydrochloric acid soln retrieval system comprises following concrete steps:
Steps A: the molar content of barium and the molar content of strontium in the conversion barium sulfide waste residue, and configuration barium sulfide waste residue suspension liquid;
Step B: with barium sulfide waste residue suspension liquid and hydrochloric acid according to the ratio of the molar content sum of barium and strontium and the molar weight of hydrogenchloride be 1: 1.6～2.4 successively put into first corrosion-resistant reactor (1) lining, under stirring slowly, carry out chemical reaction, generate muriate and hydrogen sulfide such as bariumchloride and strontium chloride;
Step C: after treating that hydrogen sulfide is overflowed, step B gained reaction product is filtered through first strainer (2), remove insoluble impurities, obtain the solution of clarifying chloride;
Step D: preparation barium sulfate powder, and be 1: 0.8～1.2 the solution of the chloride of barium sulfate and step C gained sent in the reactor (3) to carry out chemical reaction according to the ratio of the molar weight of the molar weight of strontium chloride and barium sulfate, obtain the mixture of Strontium Sulphate and bariumchloride;
Step e: step D gained reaction product is filtered through second strainer (4), filter the sulfur acid strontium filter cake and contain the solution of bariumchloride;
Step F: with the filter cake of the sulfur acid strontium of step e gained through first washing machine (5) washing, first moisture eliminator (6) drying, first pulverizer (7) is pulverized, and obtains Strontium Sulphate product (8);
Step G: with the solution mass concentration that contains bariumchloride of step e gained is that 1～4% tensio-active agent is handled, then successively drop in second corrosion-resistant reactor (9) than 1: 0.8～1.2 with bariumchloride and vitriolic molar weight and carry out chemical reaction with sulfuric acid, speed with 200-320r/min stirs simultaneously, obtains the mixture of micro crystal barium sulfate precipitate and hydrochloric acid;
Step H: the micro crystal barium sulfate precipitate of step G gained and the mixture of hydrochloric acid are filtered through ultrafiltration membrance filter device (10), obtain clarifying hydrochloric acid soln (11) and fine barium sulfate precipitate;
Step (I): use washings through second washing whizzer (12) washing, second moisture eliminator (13) drying the fine barium sulfate precipitate of step H gained, obtain fine barium sulfate product (14).
2. the method for preparing fine barium sulfate and co-produced Strontium Sulphate with barium sulfide waste residue as claimed in claim 1, it is characterized in that, the hydrogen sulfide of step B gained feeds surplus the 3rd corrosion-resistant reactor (18) lining that soda ash solution is arranged, and the mol ratio of maintenance hydrogen sulfide and yellow soda ash is 1: 0.8～1.2, under the stirring slowly, hydrogen sulfide and yellow soda ash reaction generate the mixture of Containing Sulfur sodium, carbonic acid gas and water.
3. the method for preparing fine barium sulfate and co-produced Strontium Sulphate with barium sulfide waste residue as claimed in claim 2, it is characterized in that, it is characterized in that, after the mixture of described Containing Sulfur sodium, carbonic acid gas and water treats that carbonic acid gas is overflowed, concentrate with distiller (15) distillation, when liquid reaches capacity, cooling again, separate out sodium sulfide crystal this moment, filter, promptly get Sodium Sulphide crystal product (17) through the 3rd strainer (16).
4. as claimed in claim 1ly prepare the method for fine barium sulfate and co-produced Strontium Sulphate with barium sulfide waste residue, it is characterized in that, it is characterized in that, step C gained insoluble impurities is buried or burn.
5. as claimed in claim 1ly prepare the method for fine barium sulfate and co-produced Strontium Sulphate, it is characterized in that it is characterized in that, the clarifying hydrochloric acid soln (11) of step H gained returns step B recycling with barium sulfide waste residue.
6. as claimed in claim 1ly prepare the method for fine barium sulfate and co-produced Strontium Sulphate, it is characterized in that it is characterized in that, the described tensio-active agent of step G is emulsifiable concentrate, tween 80 and the mixture of the two with barium sulfide waste residue.
7. as claimed in claim 1ly prepare the method for fine barium sulfate and co-produced Strontium Sulphate, it is characterized in that the proportion of the described washings of step (I) is less than the proportion of barium sulfate with barium sulfide waste residue.
8. as claimed in claim 1ly prepare the method for fine barium sulfate and co-produced Strontium Sulphate, it is characterized in that with barium sulfide waste residue, dispose described barium sulfate waste residue suspension liquid before, earlier described barium sulfate waste residue being pulverized is 40 orders.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115048A (en) * | 2010-12-31 | 2011-07-06 | 马艳荣 | Method for preparing barium phosphate and potassium chloride by using barium chloride waste residue |
-
2010
- 2010-08-03 CN CN2010102440296A patent/CN101898778A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115048A (en) * | 2010-12-31 | 2011-07-06 | 马艳荣 | Method for preparing barium phosphate and potassium chloride by using barium chloride waste residue |
| CN102115048B (en) * | 2010-12-31 | 2012-08-08 | 马艳荣 | Method for preparing barium phosphate and potassium chloride by using barium chloride waste residue |
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