CN101767803A - Food-grade potassium chloride production process - Google Patents
Food-grade potassium chloride production process Download PDFInfo
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- CN101767803A CN101767803A CN200910180244A CN200910180244A CN101767803A CN 101767803 A CN101767803 A CN 101767803A CN 200910180244 A CN200910180244 A CN 200910180244A CN 200910180244 A CN200910180244 A CN 200910180244A CN 101767803 A CN101767803 A CN 101767803A
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- potassium chloride
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Abstract
A food-grade potassium chloride production process adopts resource chloride type and magnesium sulfate type carnallite, sylvine, inferior ore or low-grade potassium chloride product as raw material and includes the following steps: step 1, the raw material and water are mixed and heated at high temperature to form saturated solution I; step 2, the impurities and sediment in the saturated solution I are filtered to obtain saturated solution II; step 3, the potassium chloride saturated solution II is performed with solid-liquid separation to obtain saturated solution III; step 4, the potassium chloride saturated solution III is loaded in a container for crystallization, and is cooled to normal temperature to obtain potassium chloride product IV and mother liquor V; step 5, the dissolved potassium chloride in step 4 is collected for purity detection and packaged, and the mother liquor V is added to the raw material potassium chloride and the step 1 is repeated. The food-grade potassium chloride production process can refine more than 95% of raw material potassium chloride and ensures the purity of the product to be more than 97%.
Description
Technical field
The present invention relates to a kind of production technique of Repone K, a kind of specifically production technique that from inferior quality Repone K mineral or product, extracts the Repone K of food grade.
Background technology
High purity chlorination potassium is the industrial main raw material of producing other sylvite, also is the important source material of medicine and foodstuff additive., how extracting highly purified Repone K and can adopt the processing method of higher purification precision more than 97% for the purity general requirement of the Repone K of food grade, is the significant problem that whole industry faces.The invention provides a kind of processing method that raw material Repone K can be extract more than 95%.
Summary of the invention
The production technique that the purpose of this invention is to provide a kind of food-grade potassium chloride, can realize raw material Repone K extract more than 95% and the purity of product more than 97%.
The objective of the invention is to be achieved through the following technical solutions:
A kind of production technique of food-grade potassium chloride, adopting the inferior magnesium type of salt lake regions resources chloride type and sulfuric acid carnallitite, sylvite, low-grade ore deposit inferior or Repone K finished product is raw material, adopts following steps:
One, at first with raw material Repone K and mixing of fresh water, high temperature direct heating, formation temperature is at the saturated potassium chloride solution I of 98 ℃ of left and right sides density between 1.247-1.252g/ml;
Two, impurity among the saturated potassium chloride solution I and throw out are leached, obtain saturated potassium chloride solution II;
Three, make saturated potassium chloride solution II carry out the solid-liquid separation secondary filter being not less than under 80 ℃ the temperature, obtain saturated potassium chloride solution III;
Four, with saturated potassium chloride solution III; Carry out the closed crystallization of zero evaporation in the food grade of packing into the stainless steel vessel, be cooled to normal temperature after, obtain the mother liquor water V after crystal Repone K product I V and the crystallization;
Five, the crystalline potassium chloride IV that step 4 separated out collects check purity,, in addition pure water wash, dries, packs, and with mother liquor water V and washing water adding raw material Repone K, repeating step one.
Wherein:
Type of heating in the step 1 is a direct heating.
Phase temperature in the step 3 is not less than 80 ℃.
The type of cooling in the step 4 is naturally cooling, air-cooled or water-cooled, and crystallization mode is the closed crystallization of zero evaporation.
Purity in the step 5 is to meet the requirements more than 97%, be lower than 97% with crystalline potassium chloride as raw material repeating step one.
The production technique of food-grade potassium chloride of the present invention, raw material Repone K can be extract more than 95% and the purity of product more than 97%.
Embodiment
A kind of production technique of food-grade potassium chloride, adopting purity to be lower than 97% Repone K is raw material, raw material is generally salt lake regions resources chloride type and the inferior magnesium type of sulfuric acid carnallitite, sylvite, low-grade ore deposit inferior or Repone K finished product, specifically adopts following steps:
One, at first with raw material Repone K and mixing of fresh water, high temperature direct heating, formation temperature is at the saturated potassium chloride solution I of 98 ℃ of left and right sides density between 1.247-1.252g/ml;
Two, impurity among the saturated potassium chloride solution I and throw out are leached, obtain saturated potassium chloride solution II;
Three, make saturated potassium chloride solution II carry out the solid-liquid separation secondary filter being not less than under 80 ℃ the temperature, obtain saturated potassium chloride solution III;
Four, with saturated potassium chloride solution III; Carry out the closed crystallization of zero evaporation in the food grade of packing into the stainless steel vessel, be cooled to normal temperature after, obtain the mother liquor water V after crystal Repone K product I V and the crystallization;
Five, the crystalline potassium chloride IV that step 4 separated out collects, and in addition pure water washing, oven dry, check purity are packed, and mother liquor water V and washing water are added raw material Repone K, repeating step one.
Type of heating in the step 1 is a direct heating.
Phase temperature in the step 3 is not less than 80 ℃.
The type of cooling in the step 4 can adopt naturally cooling, air-cooled or water-cooled, and crystallization mode is the closed crystallization of zero evaporation.
Purity in the step 5 is to meet the requirements more than 97%, be lower than 97% with crystalline potassium chloride as raw material repeating step one.
The production technique of food-grade potassium chloride of the present invention, raw material Repone K can be extract more than 95% and the purity of product more than 97%.
Claims (5)
1. the production technique of a food-grade potassium chloride, adopting the inferior magnesium type of salt lake regions resources chloride type and sulfuric acid carnallitite, sylvite, low-grade ore deposit inferior or Repone K finished product is raw material, adopts following steps:
One, at first with raw material Repone K and mixing of fresh water, high temperature direct heating, formation temperature is at the saturated potassium chloride solution I of 98 ℃ of left and right sides density between 1.247-1.252g/ml;
Two, impurity among the saturated potassium chloride solution I and throw out are leached, obtain saturated potassium chloride solution II;
Three, make saturated potassium chloride solution II carry out the solid-liquid separation secondary filter being not less than under 80 ℃ the temperature, obtain saturated potassium chloride solution III;
Four, with saturated potassium chloride solution III; Carry out the closed crystallization of zero evaporation in the food grade of packing into the stainless steel vessel, be cooled to normal temperature after, obtain the mother liquor water V after crystal Repone K product I V and the crystallization;
Five, the crystalline potassium chloride IV that step 4 separated out collects, and in addition pure water washing, oven dry, check purity are packed, and mother liquor water V and washing water are added raw material Repone K, repeating step one.
2. the production technique of food-grade potassium chloride according to claim 1 is characterized in that, the type of heating in the step 1 is a direct heating.
3. the production technique of food-grade potassium chloride according to claim 1 is characterized in that, the phase temperature in the step 3 is not less than 80 ℃.
4. the production technique of food-grade potassium chloride according to claim 1 is characterized in that, the type of cooling in the step 4 can adopt naturally cooling, air-cooled or water-cooled, and crystallization mode is the closed crystallization of zero evaporation.
5. according to the production technique of the food-grade potassium chloride under the claim 1, it is characterized in that the purity in the step 5 is to meet the requirements more than 97%, be lower than 97% with crystalline potassium chloride as raw material repeating step one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910180244A CN101767803A (en) | 2009-10-10 | 2009-10-10 | Food-grade potassium chloride production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910180244A CN101767803A (en) | 2009-10-10 | 2009-10-10 | Food-grade potassium chloride production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101767803A true CN101767803A (en) | 2010-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN200910180244A Pending CN101767803A (en) | 2009-10-10 | 2009-10-10 | Food-grade potassium chloride production process |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962198A (en) * | 2010-11-05 | 2011-02-02 | 天津长芦汉沽盐场有限责任公司 | Production process of refined potassium chloride |
| RU2465204C1 (en) * | 2011-04-08 | 2012-10-27 | Закрытое акционерное общество ВНИИ Галургии (ЗАО ВНИИ Галургии) | Method of extracting potassium chloride |
| CN103803585A (en) * | 2012-11-09 | 2014-05-21 | 天津长芦汉沽盐场有限责任公司 | Production method of food grade potassium chloride |
| CN103833052A (en) * | 2014-03-11 | 2014-06-04 | 钟林 | Production method of food-grade potassium chloride |
| CN104192868A (en) * | 2014-08-25 | 2014-12-10 | 连云港树人科创食品添加剂有限公司 | Method for removing anti-caking agent out of potassium chloride |
| CN112370969A (en) * | 2020-12-08 | 2021-02-19 | 郑州大学 | Low-energy-consumption membrane separation method and matched device |
-
2009
- 2009-10-10 CN CN200910180244A patent/CN101767803A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962198A (en) * | 2010-11-05 | 2011-02-02 | 天津长芦汉沽盐场有限责任公司 | Production process of refined potassium chloride |
| RU2465204C1 (en) * | 2011-04-08 | 2012-10-27 | Закрытое акционерное общество ВНИИ Галургии (ЗАО ВНИИ Галургии) | Method of extracting potassium chloride |
| CN103803585A (en) * | 2012-11-09 | 2014-05-21 | 天津长芦汉沽盐场有限责任公司 | Production method of food grade potassium chloride |
| CN103833052A (en) * | 2014-03-11 | 2014-06-04 | 钟林 | Production method of food-grade potassium chloride |
| CN104192868A (en) * | 2014-08-25 | 2014-12-10 | 连云港树人科创食品添加剂有限公司 | Method for removing anti-caking agent out of potassium chloride |
| CN112370969A (en) * | 2020-12-08 | 2021-02-19 | 郑州大学 | Low-energy-consumption membrane separation method and matched device |
| CN112370969B (en) * | 2020-12-08 | 2023-01-31 | 郑州大学 | Low-energy-consumption membrane separation method and matched device |
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Application publication date: 20100707 |