CN100564260C - Produce the method for liquid barium chloride with low-grade witherite mineral powder - Google Patents
Produce the method for liquid barium chloride with low-grade witherite mineral powder Download PDFInfo
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- CN100564260C CN100564260C CNB200610086833XA CN200610086833A CN100564260C CN 100564260 C CN100564260 C CN 100564260C CN B200610086833X A CNB200610086833X A CN B200610086833XA CN 200610086833 A CN200610086833 A CN 200610086833A CN 100564260 C CN100564260 C CN 100564260C
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- mineral powder
- low
- barium chloride
- grade
- witherite mineral
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Abstract
The present invention relates to the fine chemical technology field, specifically produce the method for liquid barium chloride with low-grade witherite mineral powder.The production method of bariumchloride has two kinds, and a kind of is the barite reduction method, and another kind is a higher-grade witherite mineral powder salt acid system.Barite reduction method sulfuration process product purity height, but facility investment is big, and environmental pollution is more serious.Another kind method is with higher-grade witherite mineral powder or adds a spot of low-grade witherite mineral powder, produces barium chloride solution with the method for hydrochloric acid leaching, and this method production cost is higher.And use low-grade witherite mineral powder (content is about 68%) to produce barium chloride solution fully, have not yet to see report.The present invention uses low-grade witherite mineral powder (content is about 68%) to produce barium chloride solution fully, adopts multistage interruption to add the method that sodium hydroxide solution is adjusted the pH value, removes Mg respectively
2+, Ca
2+, Sr
2+, and Ba
2+Content loss has dropped to minimum, and product meets quality standard.
Description
Technical field
The present invention relates to the fine chemical technology field, specifically produce the method for liquid barium chloride with low-grade witherite mineral powder.
Background technology
At present, the production method of bariumchloride has two kinds, and a kind of is the barite reduction method, and another kind is a higher-grade witherite powder salt acid system.The barite reduction method is with barium sulfate (barite), adds the reductive agent feed coal through high-temperature melting furnace, generates barium sulphide, BaSO
4+ 2C → BaS+2CO
2↑ barium sulphide and hydrochloric acid reaction generate bariumchloride BaS+2HCl → BaCl
2+ H
2S ↑ this handicraft product purity height, but facility investment is big, and have stink damp to discharge, environmental pollution is more serious.Another kind method be with contain barium carbonate 95% or more higher-grade witherite powder or add a spot of low-grade witherite powder (content is about 68%) with the method for hydrochloric acid leaching production barium chloride solution.BaCO
3+ 2HCl → BaCl
2+ CO
2↑+H
2This method of O mainly uses higher-grade witherite mineral powder to do raw material, and production cost is higher.And use low-grade witherite powder (content is about 68%) to produce barium chloride solution fully, have not yet to see report.
Summary of the invention
The purpose of this invention is to provide the method that the low-grade witherite mineral powder of a kind of usefulness produces liquid barium chloride,, also can reduce cost simultaneously, reduce investment to solve the application of low-grade witherite mineral powder.
Technical scheme of the present invention is: low-grade witherite mineral powder is dropped in the reaction tank, after stirring, add the technical hydrochloric acid of 25%-35%, finish about 3 hours internal reactions, the control pH value is 2-3, applying mechanically mother liquor to pH value is 4-5, continue reaction 30 minutes, add the 32%-42% sodium hydroxide solution, the control pH value is 9, stir after 20 minutes, continue to add the 32%-42% sodium hydroxide solution, the control pH value is 11, stirs after 20 minutes, continue to add the 32%-42% sodium hydroxide solution, control pH value be 13, reaction solution after filtering, solution is qualified barium chlorate solution, filter cake is through washing and filter pressing, and mother liquor returns agitating reaction pond and applies mechanically.Whole process of production is all carried out under normal pressure, normal temperature, need not provide heat and cold in the outside.
The present invention uses low-grade witherite powder (barium carbonate content is about 68%) fully, foreign matter content is higher, and be the carbonate impurity such as magnesium, calcium, strontium of same main group, especially the carbonate of magnesium, calcium, barium and hydrochloride similar performance, adopt ordinary process to be difficult to magnesium, calcium, strontium ion are removed, and Mg
2+, Ca
2+, Sr
2+Ionic membrane in the ion film caustic soda production and resin life-span all there are bigger infringement, adopt the main difficult problem of low-grade breeze is how to remove Mg
2+, Ca
2+, Sr
2+, and minimum minimizing Ba
2+Loss.
The present invention adopts above-mentioned multistage interruption to adjust the method for the multistage impurity elimination of pH value, has removed Mg to greatest extent
2+, Ca
2+, Sr
2+, and Ba
2+Content loss has dropped to minimum.Produce the qualified BaCl that meets ion film caustic soda primary brine operation index request
2Solution, its index is: BaCl
2〉=be 190g/l, Ca
2++ Mg
2+≤ 14g/l, Sr
2+≤ 1.5g/l.The present invention compares with using the processing method that contains the higher-grade witherite mineral powder production bariumchloride of barium carbonate more than 95%, 400～600 yuan of production cost reductions per ton, by 2000 tons of/year calculating of annual production, year create economic benefit (400～600) * 2000=80～1,200,000 yuan.Also avoid simultaneously the environmental pollution of barite method, had favorable economic benefit and environmental benefit.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Embodiment
Embodiment 1: with content is that 68% witherite powder 3000Kg drops in the reaction tank, adding concentration is 30% hydrochloric acid, the limit edged stirs, and reaction in 3 hours finishes, and the control pH value is 2-3, apply mechanically mother liquor, end during for 4-5 to pH value, continue to stir 30 minutes, add concentration and be 42% NaOH solution, adjusting pH value is 9, and portion C a is arranged this moment
2+Precipitation appears, Ca
2++ 2OH
-→ Ca (OH)
2↓.Stirred 20 minutes, and added concentration again and be 42% NaOH, adjusting pH value is 11, this moment Ca
2+, Mg
2+Basic precipitation finishes, and a small amount of Sr is arranged
2+Precipitation stirred 20 minutes, added concentration again and be 42% NaOH solution, and adjusting pH value is 13, and most of Sr is arranged at this moment
2+Precipitation, Sr
2++ 2OH → Sr (OH) ↓ stirring was squeezed into plate-and-frame filter press with reaction solution with pump after 20 minutes, and clear liquid is a product, and filter cake is through washing and filter pressing, and mother liquor returns agitating reaction pond and applies mechanically.Clear liquid result after testing is as follows:
BaCl
2 200.7g/l?Mg
2++Ca
2+11.73g/l.Sr
2+1.5g/l。
Embodiment 2: with content is that 68% witherite powder 3200Kg drops in the reaction tank, adding concentration is 33.7% hydrochloric acid, and the limit edged stirs, and reaction in 3 hours finishes, the control pH value is 2-3, apply mechanically mother liquor, end during for 4-5 to pH value, continue to stir 30 minutes, adding concentration is 32% NaOH solution, adjusting pH value is 9, and following process is with embodiment 1, and used NaOH strength of solution is 32%.The clear liquid detected result is as follows:
BaCl
2 209.9g/l?Mg
2++Ca
2+ 13.69g/l.Sr
2+0.75g/l。
Claims (1)
1, the method that the low-grade witherite mineral powder of a kind of usefulness produces liquid barium chloride, it is characterized by: the low-grade witherite mineral powder about 68% drops in the reaction tank with barium carbonate content, after stirring, the technical hydrochloric acid that adds 25%-35%, finish about 3 hours internal reactions, control pH value is 2-3, applies mechanically mother liquor to pH value and is 4-5, continues reaction 30 minutes, add the 32%-42% sodium hydroxide solution, control pH value is 9, stirs after 20 minutes, continues to add the 32%-42% sodium hydroxide solution, control pH value is 11, stir after 20 minutes, continue to add the 32%-42% sodium hydroxide solution, control pH value is 13, reaction solution after filtering, solution is qualified barium chloride solution, and filter cake is through washing and filter pressing, and mother liquor returns agitating reaction pond and applies mechanically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610086833XA CN100564260C (en) | 2006-06-20 | 2006-06-20 | Produce the method for liquid barium chloride with low-grade witherite mineral powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610086833XA CN100564260C (en) | 2006-06-20 | 2006-06-20 | Produce the method for liquid barium chloride with low-grade witherite mineral powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101092243A CN101092243A (en) | 2007-12-26 |
| CN100564260C true CN100564260C (en) | 2009-12-02 |
Family
ID=38990713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610086833XA Expired - Fee Related CN100564260C (en) | 2006-06-20 | 2006-06-20 | Produce the method for liquid barium chloride with low-grade witherite mineral powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100564260C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103318936A (en) * | 2012-03-22 | 2013-09-25 | 黄家鹄 | Method for preparing barium chloride and/or barium carbonate from raw material containing barium carbonate and calcium carbonate |
| CN104477963A (en) * | 2014-12-23 | 2015-04-01 | 安徽助成信息科技有限公司 | Technology for solid barium chloride acidification section |
| CN109485099A (en) * | 2018-12-06 | 2019-03-19 | 城口县生产力促进中心 | A method of it is directly that raw material prepares barium ferrite using low-grade witherite |
-
2006
- 2006-06-20 CN CNB200610086833XA patent/CN100564260C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101092243A (en) | 2007-12-26 |
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