CN104291360A - Method for extracting reagent grade potassium chloride from potassium fertilizer - Google Patents
Method for extracting reagent grade potassium chloride from potassium fertilizer Download PDFInfo
- Publication number
- CN104291360A CN104291360A CN201310457714.0A CN201310457714A CN104291360A CN 104291360 A CN104291360 A CN 104291360A CN 201310457714 A CN201310457714 A CN 201310457714A CN 104291360 A CN104291360 A CN 104291360A
- Authority
- CN
- China
- Prior art keywords
- filter
- repone
- potash fertilizer
- regulate
- potassium chloride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Fertilizers (AREA)
Abstract
The invention discloses a method for extracting reagent grade potassium chloride from potassium fertilizer. The method comprises the steps of firstly dissolving the potassium fertilizer to remove insoluble substances; then removing calcium, magnesium, barium, sulfate radicals and carbonate ions which are contained in the solution by adopting technological processes of gradual precipitation, filtration and crystallization; removing sodium ions by a recrystallization method on basis of different influences of temperature on solubility of sodium chloride and potassium chloride, and finally obtaining high-purity reagent grade potassium chloride. Yield of potassium chloride is effectively increased due to optimal control of processing steps and reaction conditions.
Description
Technical field
The present invention relates to a kind of extracting method of compound, particularly relate to a kind of method extracting SILVER REAGENT Repone K from potash fertilizer.
Background technology
Potash fertilizer is a kind of common agricultural fertilizer, mainly contain Repone K, potassium sulfate, plant ash etc., impurity is more, the purity of Repone K is also lower, but potash fertilizer is with low cost, is usually obtained containing sylvite solid mineral by processing solubility, abundant raw material is common, bring up again the method for getting SILVER REAGENT Repone K from potash fertilizer at present, technical process also exists removal impurity not thoroughly all the time due to the reason of the aspect such as step or reagent, obtains the problems such as Repone K purity is high not.
Therefore, need a kind of new technical scheme to solve the problem.
Summary of the invention
Goal of the invention: in order to solve the problem existing for prior art, the invention provides and a kind ofly bring up again the method for getting SILVER REAGENT Repone K from potash fertilizer, have selected a kind of technical process preferably and propose best manufacturing condition, the Potassium Chloride Product produced meets the purity specifications standard of GB.
Technical scheme: for achieving the above object, the present invention is a kind of to be brought up again the method for getting SILVER REAGENT Repone K from potash fertilizer and can adopt following technical scheme: a kind of method extracting SILVER REAGENT Repone K from potash fertilizer, comprises the following steps:
1) potash fertilizer is dissolved in tap water, makes mother liquor, filter;
2) add saturated aqua calcis in the filtrate obtained to step 1, regulate pH to be 10 ~ 12, filter, to remove the Mg existed in filtrate
2+;
3) add concentrated hydrochloric acid in the filtrate obtained to step 2 and regulate pH=5, then add saturated barium chloride solution, filter, to remove the SO existed in filtrate
4 2-;
4) add unsaturated carbonate potassium solution in the filtrate obtained to step 3, filter, to remove the Ca existed in filtrate
2+and Ba
2+;
5) adding concentrated hydrochloric acid in the filtrate obtained to step 4 regulates pH to be 3 ~ 5, filters, to remove the CO existed in filtrate
3 2-;
6) use carbonoxide ion exchange column to carry out ion-exchange to the filtrate that step 5 obtains, get clear liquid, decrease temperature crystalline after evaporation concentration, filter gained crystal and dry, thoroughly remove a small amount of remaining Ca
2+and Ba
2+.
More preferred, regulate pH to be 12 in step 2, at this ph, Mg
2+precipitate more complete.
More preferred: regulate pH to be 4 in step 5, at this ph, the crystallization yields of Repone K is the highest.
Beneficial effect: a kind of method extracting SILVER REAGENT Repone K from potash fertilizer provided by the present invention, according to each composition contained in potash fertilizer and respective characteristic, take the technical process of a definite sequence, progressively sedimentation and filtration, and accurately select solution acid alkalinity suitable in each technical process, ensure the purity of Repone K, improve the transformation efficiency of product.
Embodiment
Below in conjunction with embodiment, illustrate the present invention further, following embodiment should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
The invention discloses a kind of method extracting Repone K from agricultural chemicals potash fertilizer, comprise the following steps:
1) potash fertilizer is dissolved in tap water, makes mother liquor, filter;
2) add saturated aqua calcis in the filtrate obtained to step 1, regulate pH to be 12, filter, to remove the Mg existed in filtrate
2+, at this ph, Mg
2+precipitate more complete;
3) add concentrated hydrochloric acid in the filtrate obtained to step 2 and regulate pH=5, then add saturated barium chloride solution, filter, to remove the SO existed in filtrate
4 2-;
4) add unsaturated carbonate potassium solution in the filtrate obtained to step 3, filter, to remove the Ca existed in filtrate
2+and Ba
2+;
5) adding concentrated hydrochloric acid in the filtrate obtained to step 4 regulates pH to be 4, filters, to remove the CO existed in filtrate
3 2-because the hydrochloric acid added adds Chlorine in Solution ionic concn, according to common-ion effcet, during Repone K crystallization, Chlorine in Solution ionic concn is larger, and Repone K electric power ionization equilibrium more moves to the direction generating Repone K, thus has the precipitation of more potassium chloride, therefore at this ph, the crystallization yields of Repone K is the highest;
6) use carbonoxide ion exchange column to carry out ion-exchange to the filtrate that step 5 obtains, get clear liquid, decrease temperature crystalline after evaporation concentration, filter gained crystal and dry, thoroughly remove a small amount of remaining Ca
2+and Ba
2+.
Claims (3)
1. from potash fertilizer, extract a method for SILVER REAGENT Repone K, it is characterized in that comprising the following steps:
1) potash fertilizer is dissolved in tap water, makes mother liquor, filter;
2) add saturated aqua calcis in the filtrate obtained to step 1, regulate pH to be 10 ~ 12, filter;
3) add concentrated hydrochloric acid in the filtrate obtained to step 2 and regulate pH=5, then add saturated barium chloride solution, filter;
4) add unsaturated carbonate potassium solution in the filtrate obtained to step 3, filter;
5) adding concentrated hydrochloric acid in the filtrate obtained to step 4 regulates pH to be 3 ~ 5, filters;
6) use carbonoxide ion exchange column to carry out ion-exchange to the filtrate that step 5 obtains, get clear liquid, decrease temperature crystalline after evaporation concentration, filter gained crystal and dry.
2. a kind of method extracting SILVER REAGENT Repone K from potash fertilizer according to claim 1, is characterized in that: regulate pH to be 12 in step 2.
3. a kind of method extracting SILVER REAGENT Repone K from potash fertilizer according to claim 1, is characterized in that: regulate pH to be 4 in step 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310457714.0A CN104291360A (en) | 2013-09-30 | 2013-09-30 | Method for extracting reagent grade potassium chloride from potassium fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310457714.0A CN104291360A (en) | 2013-09-30 | 2013-09-30 | Method for extracting reagent grade potassium chloride from potassium fertilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104291360A true CN104291360A (en) | 2015-01-21 |
Family
ID=52311354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310457714.0A Pending CN104291360A (en) | 2013-09-30 | 2013-09-30 | Method for extracting reagent grade potassium chloride from potassium fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104291360A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217695A (en) * | 2018-02-02 | 2018-06-29 | 云南雄冶科技有限公司 | A kind of method that potassium sodium detaches in soda-wash water |
| CN110240180A (en) * | 2019-08-05 | 2019-09-17 | 佛山西陇化工有限公司 | A kind of preparation method of low-carbon inorganic potassium salt |
| CN111533141A (en) * | 2020-05-20 | 2020-08-14 | 成都华融化工有限公司 | Reagent potassium chloride and preparation method thereof |
| GB2585831A (en) * | 2019-07-15 | 2021-01-27 | Klinge Chemicals Ltd | Process |
| CN115353123A (en) * | 2022-08-16 | 2022-11-18 | 珠海正杏新材料科技有限公司 | Method for recovering potassium fluoride |
| CN116730447A (en) * | 2023-08-08 | 2023-09-12 | 杭州匠容道环境科技有限公司 | Method and equipment for recycling fly ash water washing liquid |
-
2013
- 2013-09-30 CN CN201310457714.0A patent/CN104291360A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 庞承新: "从农用钾肥中提取试剂级氯化钾的工艺条件研究", 《贵州化工》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217695A (en) * | 2018-02-02 | 2018-06-29 | 云南雄冶科技有限公司 | A kind of method that potassium sodium detaches in soda-wash water |
| GB2585831A (en) * | 2019-07-15 | 2021-01-27 | Klinge Chemicals Ltd | Process |
| CN110240180A (en) * | 2019-08-05 | 2019-09-17 | 佛山西陇化工有限公司 | A kind of preparation method of low-carbon inorganic potassium salt |
| CN111533141A (en) * | 2020-05-20 | 2020-08-14 | 成都华融化工有限公司 | Reagent potassium chloride and preparation method thereof |
| CN115353123A (en) * | 2022-08-16 | 2022-11-18 | 珠海正杏新材料科技有限公司 | Method for recovering potassium fluoride |
| CN115353123B (en) * | 2022-08-16 | 2023-12-05 | 珠海正杏新材料科技有限公司 | Recovery method of potassium fluoride |
| CN116730447A (en) * | 2023-08-08 | 2023-09-12 | 杭州匠容道环境科技有限公司 | Method and equipment for recycling fly ash water washing liquid |
| CN116730447B (en) * | 2023-08-08 | 2023-11-14 | 杭州匠容道环境科技有限公司 | Method and equipment for recycling fly ash water washing liquid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104291360A (en) | Method for extracting reagent grade potassium chloride from potassium fertilizer | |
| JP6770676B2 (en) | Lithium recovery method | |
| US9126842B2 (en) | Water treatment | |
| JP2012505814A5 (en) | ||
| US9540248B2 (en) | Selective extraction of potassium chloride employing tartaric acid as safe, benign and recyclable extractant | |
| EP1945567B1 (en) | Improved process for the recovery of sulphate of potash (sop) from sulphate rich bittern | |
| JP2019526523A (en) | Method for producing lithium chloride and method for producing lithium carbonate | |
| KR101165453B1 (en) | Method for preparing high purity lithium carbonate from brines | |
| CN115321736A (en) | Treatment method of glyphosate production wastewater and high-value recycling of phosphorus-containing waste | |
| JP6337708B2 (en) | Method for separating nickel from nickel sludge | |
| JP2022519687A (en) | Recovery of lithium hydroxide | |
| CN105712388B (en) | Nitro-compound fertilizer and industrial potassium nitrate coproduction method | |
| CN105000539A (en) | Method for producing potassium dihydrogen phosphate and potassium-ammonium dihydrogen phosphate through wet process phosphoric acid | |
| CN109534369B (en) | Membrane integrated lithium chloride preparation equipment and method thereof | |
| CN1179882C (en) | Process for preparing potassium sulfate | |
| CN101659418B (en) | Method for preparing boric acid in boracic sodium chloride and potassium chloride saturated bittern solution containing boron | |
| CN115124009A (en) | Method for producing magnesium hydrogen phosphate and potassium dihydrogen phosphate and co-producing high-purity gypsum by using calcium hydrogen phosphate reclaimed material | |
| JP7284596B2 (en) | Method for producing gypsum dihydrate | |
| CN104947154A (en) | Method for demagging anolyte of electrolytic manganese | |
| CN111232940B (en) | Preparation method of tricalcium phosphate and potassium chloride in co-production | |
| KR101395558B1 (en) | Refining method of quinolinic acid | |
| AU2010264079A1 (en) | Polyhalite IMI process for KNO3 production | |
| RU2537607C1 (en) | Method of barium nitrate purification | |
| MY142428A (en) | Method to manufacture copper sulphate pentahydrate from copper etchant waste | |
| JP6106262B2 (en) | Production of high purity salts with reduced impurity levels |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150121 |