CN1179883C - Method of producing soda using Gauber salt of natural salt lake sodium sulfate decahydrate resources blending with residuel halogen and carbonizing - Google Patents
Method of producing soda using Gauber salt of natural salt lake sodium sulfate decahydrate resources blending with residuel halogen and carbonizing Download PDFInfo
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- CN1179883C CN1179883C CNB031329691A CN03132969A CN1179883C CN 1179883 C CN1179883 C CN 1179883C CN B031329691 A CNB031329691 A CN B031329691A CN 03132969 A CN03132969 A CN 03132969A CN 1179883 C CN1179883 C CN 1179883C
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- sodium sulfate
- salt
- sodium
- mirabilite
- soda ash
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Abstract
The present invention relates to a method for producing calcined soda by mixing a mirabilite alkali of sodium mirabilite resources in mineral salt lakes with residual halides in a carbonization mode, and belongs to the field of chemical industry. The method is used for producing calcined soda in the existing carbonization mode, and uses a mirabilite alkali generated in the production of crystal saltpetre, and intercrystalline brine as raw materials. When the calcined soda is produced, the mirabilite alkali is dissolved by the intercrystalline brine to generate alkaline liquor which contains 1 portion of sodium carbonate, 1 portion of sodium sulfate and 1.2 to 2 portions of sodium chloride, and the total salt concentration of the alkaline liquor is from 320 to 400 g/liter. The proportions of the sodium carbonate to the sodium sulfate to the sodium chloride and the total salt concentration are controlled by the added intercrystalline brine and the water quantity, and the prepared alkaline liquor enters a carbonization tower to produce the calcined soda through subsequent procedures. A sodium sulfate solution and a sodium chloride solution which are discharged in the process of producing the calcined soda are discharged into the mirabilite ores in salt lakes. The calcined soda is produced with the method, thereby improving the quality of the mirabilite ores, which is favorable for producing anhydrous sodium sulfate and industrial salts with high quality. Meanwhile, mirabilite ore resources are effectively and fully utilized.
Description
Technical field:
The Gauber salt of a kind of natural salt lake sodium sulfate decahydrate resource is converted and is closed residual halocarbon production soda ash method, belongs to chemical field.
Background technology:
The saltcake ore deposit in natural salt lake is nitre, alkali, salt symbiosis ore body, wherein nitre content 71.5%, alkali content 15.5%, salts contg 13%.Enforcement by " cold and hot molten system halogen technology " and " nitre field Exposure to Sunlight technology ", output than higher-grade crystallization nitre, Exposure to Sunlight nitre, Industrial Salt, crystallization nitre is for production high-quality Sodium sulfate anhydrous.min(99), Exposure to Sunlight nitre is for producing low iron Sodium Sulphide, Industrial Salt supplies with ammonia alkali factory and produces soda ash, realized the initial gross separation of salt, nitre.But the alkaline constituents in the ore deposit does not separate utilization, makes the yellow soda ash enrichment gradually in the raw material, causes raw material to be degenerated thereby generate a large amount of Gauber salts, brings very big difficulty for later mask work.Have a strong impact on the quality of Sodium sulfate anhydrous.min(99).The major ingredient of Gauber salt is yellow soda ash, sodium sulfate and sodium-chlor, and its content is respectively 15-20%, 15-20%, 6-12%.Can't produce high-quality Sodium sulfate anhydrous.min(99) because alkali content is higher in the Gauber salt; And production soda ash, its alkali, salts contg are on the low side, utilize the carborization can't ordinary production soda ash.
Summary of the invention:
The objective of the invention is to utilize the method for the lower Gauber salt production soda ash of alkalinity, improve the quality in salt lake mirabilite ore deposit, be beneficial to the production of high-quality Sodium sulfate anhydrous.min(99).
The Gauber salt of natural salt lake of the present invention sodium sulfate decahydrate resource is converted the residual halocarbon production soda ash method of closing, be to utilize existing carbonization to produce the method for soda ash, the Gauber salt and the intercrystalline bittern (its sodium chloride-containing amount is up to 200 grams per liters) that produce with production crystallization nitre are raw material, produce soda ash; When producing soda ash, remove to dissolve Gauber salt with intercrystalline bittern and generate alkali lye, making wherein, the ratio of yellow soda ash, sodium sulfate, sodium-chlor is 1: 1: 1.2-2, the total salt concentration of alkali lye are controlled in the 320-400 grams per liter, and soda ash quality of Sheng Chaning and output are all more satisfactory like this; The ratio of yellow soda ash, sodium sulfate, sodium-chlor and total salt concentration go control by the amount of intercrystalline bittern that adds and water; The alkali lye for preparing enter carbonating tower with and subsequent operation produce soda ash; In addition, solubleness reduces after utilizing yellow soda ash to be converted into sodium bicarbonate, and the sodium-chlor solubility with temperature changes little characteristics, and the temperature of carbonization terminal point is controlled at the temperature section of sodium sulfate solubleness maximum, be 30-33 ℃, make the sodium bicarbonate supersaturation separate out the back and make soda ash by calcining; In the saltcake ore deposit that sodium sulfate of discharging in the system soda ash process and sodium chloride solution are expelled back into the salt lake, easily realize separating again utilizing.
Produce soda ash by present method, can reduce the content of alkali in the saltcake ore deposit, increased the content of sodium sulfate, improved the grade in saltcake ore deposit, help producing high-quality Sodium sulfate anhydrous.min(99).Simultaneously, the also more abundant saltcake ore resources that effectively utilized.
Embodiment
Remove to dissolve Gauber salt with intercrystalline bittern and generate alkali lye, making wherein, the ratio of yellow soda ash, sodium sulfate, sodium-chlor is 1: 1: 1.2-2, the total salt concentration of alkali lye are controlled in the 320-400 grams per liter; The ratio of yellow soda ash, sodium sulfate, sodium-chlor and total salt concentration go control by the amount of intercrystalline bittern that adds and water; The alkali lye for preparing is made soda ash by operations such as carbonization, stiff, separation, dryings; Wherein the temperature of carbonization terminal point is controlled at 30-33 ℃; In the saltcake ore deposit that sodium sulfate of discharging in the system soda ash process and sodium chloride solution are expelled back into the salt lake, easily realize separating again utilizing.
Claims (1)
1, the Gauber salt of a kind of natural salt lake sodium sulfate decahydrate resource is converted the method that bittern is produced soda ash through carbonization technique between synthetic, it is characterized in that the Gauber salt and the intercrystalline bittern that produce with production crystallization nitre are raw material, produces soda ash; Concrete operation steps is: generate alkali lye with intercrystalline bittern dissolving Gauber salt, and water regulates to alkali lye, the weight ratio that makes yellow soda ash in the alkali lye, sodium sulfate, sodium-chlor is 1: 1: 1.2-2, and the total salt concentration of alkali lye is controlled at the 320-400 grams per liter; The alkali lye for preparing enters carbonating tower and carries out carbonization, and the temperature of carbonization terminal point is controlled at the temperature section of sodium sulfate solubleness maximum, promptly 30-33 ℃, makes sodium bicarbonate supersaturation under this temperature separate out, separate, and makes soda ash by calcining; Use again in the saltcake ore deposit that sodium sulfate of discharging in the system soda ash process and sodium chloride solution are expelled back into the salt lake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031329691A CN1179883C (en) | 2003-07-25 | 2003-07-25 | Method of producing soda using Gauber salt of natural salt lake sodium sulfate decahydrate resources blending with residuel halogen and carbonizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031329691A CN1179883C (en) | 2003-07-25 | 2003-07-25 | Method of producing soda using Gauber salt of natural salt lake sodium sulfate decahydrate resources blending with residuel halogen and carbonizing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1475444A CN1475444A (en) | 2004-02-18 |
| CN1179883C true CN1179883C (en) | 2004-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031329691A Expired - Lifetime CN1179883C (en) | 2003-07-25 | 2003-07-25 | Method of producing soda using Gauber salt of natural salt lake sodium sulfate decahydrate resources blending with residuel halogen and carbonizing |
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| CN (1) | CN1179883C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TR200403060A2 (en) * | 2004-11-11 | 2006-06-21 | Eti Soda Üretim Pazarlama Nakliyat ve Elektrik Üretim Sanayi ve Ticaret A. Ş. | Production of heavy soda, sodium bicarbonate, light soda and sodium silicate from bicarbonate containing solutions |
| CN104445285B (en) * | 2014-12-09 | 2016-05-11 | 化工部长沙设计研究院 | A kind of method to produce heavy soda ash containing the natural lake water of alkali |
| CN115837395A (en) * | 2022-11-14 | 2023-03-24 | 东华工程科技股份有限公司 | Treatment method for byproduct sodium chloride tail salt after lithium extraction in salt lake |
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2003
- 2003-07-25 CN CNB031329691A patent/CN1179883C/en not_active Expired - Lifetime
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| CN1475444A (en) | 2004-02-18 |
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Effective date of registration: 20081212 Address after: The Inner Mongolia Autonomous Region city Dongsheng District Tianjiao Erdos road Xintong Central Mansion A 16 floor Patentee after: Inner Mongolia Berun Engineering Co.,Ltd. Address before: Erdos West Street, Dongsheng District, Erdos City, the Inner Mongolia Autonomous Region, No. 6 Patentee before: Inner Mongolia Yuanxing Natural Alkali Co.,Ltd. |
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Owner name: NEIMENGGU BOYUAN ENGINEERING CO.,LTD. Free format text: FORMER OWNER: NEIMENGGU YUANXING TRONA CO., LTD. Effective date: 20081212 |
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Address after: 017000 the Inner Mongolia Autonomous Region city Dongsheng District West Street Ordos ertoke Boyuan building 15 Floor Patentee after: Inner Mongolia Berun Engineering Co.,Ltd. Address before: 017000 the Inner Mongolia Autonomous Region District of Dongsheng City Road Xintong Erdos Tianjiao Central Mansion A 16 floor Patentee before: Inner Mongolia Berun Engineering Co.,Ltd. |
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