CN101987740A - Method for preparing strontium carbonate and co-producing calcium sulfate and industrial salt by using filter cake strontium sulfate - Google Patents
Method for preparing strontium carbonate and co-producing calcium sulfate and industrial salt by using filter cake strontium sulfate Download PDFInfo
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- CN101987740A CN101987740A CN2010102439674A CN201010243967A CN101987740A CN 101987740 A CN101987740 A CN 101987740A CN 2010102439674 A CN2010102439674 A CN 2010102439674A CN 201010243967 A CN201010243967 A CN 201010243967A CN 101987740 A CN101987740 A CN 101987740A
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- strontium
- filter cake
- strontium carbonate
- industrial salt
- sulfate
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Abstract
The invention belongs to the technical field of chemical three-waste treatment and utilization, and particularly relates to a method for preparing strontium carbonate and co-producing calcium sulfate and industrial salt by using filter cake strontium sulfate. The method mainly comprises the following steps of:: processing the filter cake strontium sulfate by fully using calcium chloride so as to form purer solution, such as strontium chloride, exchanging with sodium carbonate to obtain precipitated strontium carbonate and the byproducts of strontium sulfate and industrial salt; then preparing the product with higher economic value and eliminating a great amount of waste residue of barium sulphide. The invention has the advantages of low cost, high profit, great market demand, simple process and production device, provides a comparatively practical processing and utilizing method which can create appreciable economic value, eliminate the chemical waste residue and solve environmental pollution, particularly treats the waste residue of barium sulphide completely and avoids secondary pollution and environmental-friendly hidden troubles.
Description
Technical field
The invention belongs to the technical field of three chemical wastes and utilization, particularly a kind of method for preparing Strontium carbonate powder co-producing sulfuric acid calcium and Industrial Salt with the filter cake Strontium Sulphate.
Technical background
The production method that thiocarbamide is produced is a lot, and wherein traditional method is to adopt the sulfuric acid acidation barium sulphide to produce hydrogen sulfide, carries out condensation reaction with calcyanide again.Make thiocarbamide through crystallization, dehydration, drying, pulverizing, packing, one ton of thiocarbamide of every production will produce 9.5 tons barium sulfide waste residue, a large amount of waste residue like this, if handle bad, not only can take a large amount of soils, and can pollute the environment band, especially waste residue contains the part rare metal, as not being used, then waste is very big.At present also not about prepare the relevant report of the method for Strontium carbonate powder co-producing sulfuric acid calcium and Industrial Salt with the filter cake Strontium Sulphate.
Summary of the invention
The invention provides a kind of not only with low cost, be easy to realize that and technology and production unit simply prepare the method for Strontium carbonate powder co-producing sulfuric acid calcium and Industrial Salt with the filter cake Strontium Sulphate.
To achieve the above object, technical scheme of the present invention is:
A kind ofly prepare the method for Strontium carbonate powder co-producing sulfuric acid calcium and Industrial Salt with the filter cake Strontium Sulphate, preparation process is as follows:
Steps A, will convert good filter cake Strontium Sulphate and carry out stirring reaction with the refining waste liquid calcium chloride of chlor-alkali with pure mass ratio 1: 0.40～0.80 priority one li of the anticorrosion reactor of putting into successively, the pure mass ratio of described barium sulfide waste residue and hydrochloric acid is converted according to pure barium sulphide meter in the barium sulfide waste residue;
Step B, with the reaction mixture that obtains of reaction in the steps A, filter with strainer one, obtain white filter cake calcium sulfate and clarified liq strontium chloride;
Step C, drop into anticorrosion reactor with yellow soda ash with pure mass ratio 1: 0.47～0.87 priority and carry out stirring reaction for two li filtering the strontium chloride filtrate obtain among the step B, generate the mixture of Strontium carbonate powder precipitation and sodium-chlor, the pure mass ratio of described filtrate and calcium hydroxide is converted according to pure bariumchloride in the filtrate;
Step D, with the reaction mixture that obtains of reaction among the step C, filter with strainer two;
Step e, the sodium-chlor filtrate that filtration among the step D is obtained obtain Industrial Salt with distiller distillation making;
Filter among step F, the step D precipitation Strontium carbonate powder barium filter cake obtain successively with washer one, moisture eliminator one, pulverizer one wash, dry and pulverize after be packaged to be and precipitate Strontium carbonate powder barium product;
Step G, will be among the step B filter the calcium sulfate filter cake that obtains, wash, be packaged to be the calcium sulfate product after the dry and pulverizing with washer two, moisture eliminator two, pulverizer two successively.
The present invention makes full use of hydrochloric acid to carry out acidifying insoluble impurity is all taken off, thereby forms solution such as more purified strontium chloride, is obtaining the Strontium carbonate powder precipitation with the yellow soda ash exchange then, goes back by-product calcium sulfate and Industrial Salt; Producing the product of higher economic worth, eliminate a large amount of barium sulfide waste residues simultaneously.Not only production cost is cheap, profit is high in the present invention, the huge market demand, and technology and production unit are simple; Be a kind of relatively actual processing and utilize method, this method not only can create considerable economic value, but also has eliminated chemical sludge, administered environmental pollution; Especially it is thorough barium sulfide waste residue to be administered the result, has avoided secondary pollution and environmental protection hidden danger.
Reaction principle of the present invention is:
SrSO
4+CaCl
2＝＝＝＝＝SrCl
2+CaSO
4
BaCl
2+SrCO
3＝＝＝＝＝SrCl
2+BaCO
3
SrCl
2+Na
2CO
3＝＝＝＝＝SrCO
3+NaCl
Description of drawings
Fig. 1 is the process flow sheet for preparing the method for Strontium carbonate powder co-producing sulfuric acid calcium and Industrial Salt with the filter cake Strontium Sulphate;
Wherein:
The anticorrosion reactor one of 1-, 2-strainer one, the anticorrosion reactor two of 3-, 4-strainer two, 5-distiller, the 6-Industrial Salt, 7-washer one, 8-moisture eliminator one, 9-pulverizer one, 10-strontium carbonate product, 11-washer two, 12-moisture eliminator two, 13-pulverizer two, 14-calcium sulfate product.
Concrete embodiment
Embodiment 1
A kind of method for preparing Strontium carbonate powder co-producing sulfuric acid calcium and Industrial Salt with the filter cake Strontium Sulphate, the filter cake Strontium Sulphate (by the 400kg Strontium Sulphate) that conversion is good carries out stirring reaction with the refining waste liquid calcium chloride of chlor-alkali with 1: 0.40 priority of pure mass ratio, one 1 li of the anticorrosion reactors of putting into successively, and the pure mass ratio of described barium sulfide waste residue and hydrochloric acid is converted according to pure barium sulphide meter in the barium sulfide waste residue;
The reaction mixture that reaction obtains in the anticorrosion reactor 1 filters with strainer 1, obtains white filter cake calcium sulfate and 227.07kg clarified liq strontium chloride; Filtrate and yellow soda ash successively drop into anticorrosion reactor with pure mass ratio and carry out stirring reaction for 23 li at 1: 0.47, generate the mixture of Strontium carbonate powder precipitation and sodium-chlor, and the pure mass ratio of described filtrate and calcium hydroxide is converted according to pure bariumchloride in the filtrate;
Reaction mixture with reaction in the anticorrosion reactor 24 obtains filters with strainer 24; The sodium-chlor filtrate that filtration obtains is made of distiller 5 distillations and is obtained 117.70kg Industrial Salt 6; The precipitation Strontium carbonate powder barium filter cake that filtration obtains successively with washer 1, moisture eliminator 1, pulverizer 1 wash, dry and pulverize after be packaged to be 148.63kg precipitation strontium carbonate product 10;
Reactant in the anticorrosion reactor 1 is crossed strainer 1 filter the calcium sulfate filter cake that obtains, wash, be packaged to be 195.95kg calcium sulfate product 14 after the dry and pulverizing with washer 2 11, moisture eliminator 2 12, pulverizer 2 13 successively.
Embodiment 2
A kind of method for preparing Strontium carbonate powder co-producing sulfuric acid calcium and Industrial Salt with the filter cake Strontium Sulphate, the filter cake Strontium Sulphate (by the 400kg Strontium Sulphate) that conversion is good carries out stirring reaction with the refining waste liquid calcium chloride of chlor-alkali with 1: 0.60 priority of pure mass ratio, one 1 li of the anticorrosion reactors of putting into successively, and the pure mass ratio of described barium sulfide waste residue and hydrochloric acid is converted according to pure barium sulphide meter in the barium sulfide waste residue;
The reaction mixture that reaction obtains in the anticorrosion reactor 1 filters with strainer 1, obtains white filter cake calcium sulfate and 340.60kg clarified liq strontium chloride; Successively drop into anticorrosion reactor with yellow soda ash at 1: 0.67 with pure mass ratio and carry out stirring reaction for 23 li, generate the mixture of Strontium carbonate powder precipitation and sodium-chlor, the pure mass ratio of described filtrate and calcium hydroxide is converted according to pure bariumchloride in the filtrate;
Reaction mixture with reaction in the anticorrosion reactor 24 obtains filters with strainer 24; The sodium-chlor filtrate that filtration obtains is made of distiller 5 distillations and is obtained 251.67kg Industrial Salt 6; The precipitation Strontium carbonate powder barium filter cake that filtration obtains successively with washer 1, moisture eliminator 1, pulverizer 1 wash, dry and pulverize after be packaged to be 317.80kg precipitation Strontium carbonate powder barium product 10;
Will be in the anticorrosion reactor 1 filter the calcium sulfate filter cake that obtains, wash, be packaged to be 293.93kg calcium sulfate product 14 after the dry and pulverizing with washer 2 11, moisture eliminator 2 12, pulverizer 2 13 successively.
Embodiment 3
A kind of method for preparing Strontium carbonate powder co-producing sulfuric acid calcium and Industrial Salt with the filter cake Strontium Sulphate, the filter cake Strontium Sulphate (by the 400kg Strontium Sulphate) that conversion is good carries out stirring reaction with the refining waste liquid calcium chloride of chlor-alkali with 1: 0.80 priority of pure mass ratio, one 1 li of the anticorrosion reactors of putting into successively, and the pure mass ratio of described barium sulfide waste residue and hydrochloric acid is converted according to pure barium sulphide meter in the barium sulfide waste residue;
The reaction mixture that reaction obtains in the anticorrosion reactor 1 filters with strainer 1, obtains white filter cake calcium sulfate and 454.13kg clarified liq strontium chloride; Successively drop into anticorrosion reactor with yellow soda ash at 1: 0.87 with pure mass ratio and carry out stirring reaction for 23 li, generate the mixture of Strontium carbonate powder precipitation and sodium-chlor, the pure mass ratio of described filtrate and calcium hydroxide is converted according to pure bariumchloride in the filtrate;
Reaction mixture with reaction in the anticorrosion reactor 24 obtains filters with strainer 24; The sodium-chlor filtrate that filtration obtains is made of distiller 5 distillations and is obtained 435.72kg Industrial Salt 6; The precipitation Strontium carbonate powder barium filter cake that filtration obtains successively with washer 1, moisture eliminator 1, pulverizer 1 wash, dry and pulverize after be packaged to be 550.22kg precipitation Strontium carbonate powder barium product 10;
Will be in the anticorrosion reactor 1 filter the calcium sulfate filter cake that obtains, wash, be packaged to be 391.91kg calcium sulfate product 14 after the dry and pulverizing with washer 2 11, moisture eliminator 2 12, pulverizer 2 13 successively.
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 (1)
1. one kind prepares the method for Strontium carbonate powder co-producing sulfuric acid calcium and Industrial Salt with the filter cake Strontium Sulphate, it is characterized in that preparation process is as follows:
Steps A, will convert good filter cake Strontium Sulphate and carry out stirring reaction with the refining waste liquid calcium chloride of chlor-alkali with pure mass ratio 1: 0.40～0.80 priority one li of the anticorrosion reactor of putting into successively, the pure mass ratio of described barium sulfide waste residue and hydrochloric acid is converted according to pure barium sulphide meter in the barium sulfide waste residue;
Step B, with the reaction mixture that obtains of reaction in the steps A, filter with strainer one, obtain white filter cake calcium sulfate and clarified liq strontium chloride;
Step C, drop into anticorrosion reactor with yellow soda ash with pure mass ratio 1: 0.47～0.87 priority and carry out stirring reaction for two li filtering the strontium chloride filtrate obtain among the step B, generate the mixture of Strontium carbonate powder precipitation and sodium-chlor, the pure mass ratio of described filtrate and calcium hydroxide is converted according to pure bariumchloride in the filtrate;
Step D, with the reaction mixture that obtains of reaction among the step C, filter with strainer two;
Step e, the sodium-chlor filtrate that filtration among the step D is obtained obtain Industrial Salt with distiller distillation making;
Filter among step F, the step D precipitation Strontium carbonate powder barium filter cake obtain successively with washer one, moisture eliminator one, pulverizer one wash, dry and pulverize after be packaged to be and precipitate Strontium carbonate powder barium product;
Step G, will be among the step B filter the calcium sulfate filter cake that obtains, wash, be packaged to be the calcium sulfate product after the dry and pulverizing with washer two, moisture eliminator two, pulverizer two successively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102439674A CN101987740A (en) | 2010-08-03 | 2010-08-03 | Method for preparing strontium carbonate and co-producing calcium sulfate and industrial salt by using filter cake strontium sulfate |
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| CN2010102439674A CN101987740A (en) | 2010-08-03 | 2010-08-03 | Method for preparing strontium carbonate and co-producing calcium sulfate and industrial salt by using filter cake strontium sulfate |
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| CN101987740A true CN101987740A (en) | 2011-03-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776300A (en) * | 2016-01-29 | 2016-07-20 | 常州创索新材料科技有限公司 | Method for preparing high-purity strontium carbonate |
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2010
- 2010-08-03 CN CN2010102439674A patent/CN101987740A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776300A (en) * | 2016-01-29 | 2016-07-20 | 常州创索新材料科技有限公司 | Method for preparing high-purity strontium carbonate |
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Application publication date: 20110323 |