CN105668591A - Production method of chemical reagent potassium chloride - Google Patents
Production method of chemical reagent potassium chloride Download PDFInfo
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- CN105668591A CN105668591A CN201610198685.4A CN201610198685A CN105668591A CN 105668591 A CN105668591 A CN 105668591A CN 201610198685 A CN201610198685 A CN 201610198685A CN 105668591 A CN105668591 A CN 105668591A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/04—Chlorides
- C01D3/08—Preparation by working up natural or industrial salt mixtures or siliceous minerals
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/14—Purification
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Abstract
The invention discloses a production method of a chemical reagent potassium chloride. The method comprises the following steps: (1) raw ore screening; (2) slurry mixing; (3) flotation; (4) low-sodium concentration and dehalogenation; (5) cold crystallization and crude potassium screening; (6) crude potassium concentration and dehalogenation; (7) washing and centrifugal dewatering; (8) secondary dissolution; (9) two-level filtration; (10) secondary crystallization; and (11) dewatering and separation. By adopting the technology disclosed by the invention, the recovery rate of potassium chloride is increased to more than or equal to 62%, the soluble impurities and insoluble matters in the crude potassium chloride with purity of 95% are effectively removed, and the purity of the potassium chloride product is increased to more than or equal to 99%. The technology disclosed by the invention can realize continuous operation, avoids environmental pollution and facilitates industrialization.
Description
Technical field
The present invention relates to chemical reagent production technical field, specifically the production method of a kind of chemical reagent potassium chloride.
Background technology
Potassium chloride is colourless elongated rhombus or becomes a cubic crystal, or white crystals small particle powder, and outward appearance, such as Sal, odorless, salty in the mouth, is usually used in the additive of Cardia Salt, mineral water. Potassium chloride is mainly used in inorganic industrial, is the base stock manufacturing various potassium salt or alkali such as potassium hydroxide, potassium sulfate, potassium nitrate, potassium chlorate, Arsenicum sablimatum potassium etc. Medical industry is used as diuretic and the medicine of preventing and treating kaliopenia. Dye industry is used for producing G salt, reactive dye etc. Being then agriculturally a kind of potash fertilizer, its fertilizer efficiency is fast, is directly applied to farmland, and Neng Shi soil lower floor moisture rises, and has an effect of drought resisting, but should not use in salt-soda soil and to crops such as Nicotiana tabacum L., Rhizoma Dioscoreae esculentae, Radix Betaes. Additionally, it is additionally operable to manufacture the blast reducer of muzzle or gun muzzle, iron and steel heat treatment agent, and it is used for taking a picture. It can be additionally used in medicine, scientific application, food processing, can also replace sodium chloride with partial oxidation potassium, to reduce the probability of hypertension inside Sal.
Potassium chloride is clinical conventional electrolyte balance regulating, and clinical efficacy is definite, is widely used in clinical departments. For treating and preventing the hypokalemia that a variety of causes (hypoalimentation, vomiting, severe diarrhea, application row's potassium diuretic or prolonged application sugar cortex stimulin and adrenal cortex stimulin, lose potassium nephropathy, Bartter syndrome etc.) causes, also can be used for frequent, polyphyly premature beat that the poisoning by cardiotonic glycoside such as the heart, renal edema and Folium Digitalis Purpureae cause or rapid heart rate is not normal.
Current China potassium chloride processing technique mainly has: cool technology direct flotation method technique, crystallization method technique, reverse flotation cold crystallization technique, convert the Joint Implementation of the kinds of processes such as halogen technique. But these techniques are all extremely difficult to GB646-93 chemical reagent potassium chloride national standard.
Summary of the invention
It is an object of the invention to provide the production method of a kind of chemical reagent potassium chloride, the purity of prepared Potassium Chloride Product reaches more than 99%, and environmentally safe, it is easy to accomplish industrialization.
For achieving the above object, the present invention provides following technical scheme:
The production method of a kind of chemical reagent potassium chloride, comprises the following steps:
(1) raw ore screening: first gathered to crude ore bin by the carnallite of salt pan dry in the sun, screens out nugget bigger in raw ore and other foreign material followed by reciprocating screen, and the raw ore after screening is transported to and sizes mixing in tank after entering crusher in crushing;
(2) sizing mixing: add water in tank of sizing mixing, size mixing, the raw ore solid content controlled in slip is 28～32wt%; Then in tank of sizing mixing, sodium chloride trapping agent is added as floating agent, utilize air compressor to input the air of 0.8～0.9MPa from the circulating line of pot bottom of sizing mixing to tank of sizing mixing simultaneously, make to size mixing a large amount of bubble of emerging in tank, agitated process, sodium chloride in slip optionally adheres to bubble, after stirring 2～3h, slurry pipeline transport is entered flotation cell;
(3) flotation: remove the foam of sodium chloride-containing solid through operation thick, selected, obtain low-sodium carnalite slip, the foam of sodium chloride-containing solid enters after scanning operation and enters tail salt bath, and low-sodium carnalite slip is then transported to tail salt pond;
(4) concentration of low sodium and dehalogenation: low-sodium carnalite slip is concentrated into after solid content is 32～35wt% through low sodium concentrator, it is pumped to low sodium centrifuge and carries out dehalogenation, obtaining qualified low-sodium carnalite ore deposit and be directly entered crystallizer, filtrate adopts low sodium band machine to reclaim fine grained carnallite after then sending into the concentration of low sodium concentrator;
(5) cold crystallization and thick potassium screening: the low-sodium carnalite ore deposit after centrifugal enters crystallizer, is slowly added decomposition nut liquid, low-sodium carnalite ore deposit is carried out rate controlling decomposition and crystallization; Crystallizer underflow slip after decomposition and crystallization is delivered to thick potassium screening machine and is carried out screening operation, and undecomposed oversize coarse grain carnallite returns crystallizer and again decomposes, and thick potassium siftage utilizes high head gravity flow mode to enter thick potassium concentrator;
(6) thick potassium concentration and dehalogenation: it is 32～35wt% that thick potassium siftage is concentrated into solid content through thick potassium concentrator, then be delivered to thick potassium centrifuge and carry out dehalogenation and obtain thick potassium and filtrate, filtrate is reclaimed from flowing into thick potassium concentrator;
(7) washing, centrifuge dehydration: add fresh water in thick potassium and wash, remove the magnesium chloride of absorption and sodium chloride therein; Slip after washing centrifuge elimination essence potassium mother solution, becomes essence potassium, and drying obtains potassium chloride crude product;
(8) again dissolve: at room temperature, potassium chloride crude product is made saturated potassium chloride solution, add 230～245kg potassium chloride crude product according still further to every cubic metre of saturated potassium chloride solution, in this saturated potassium chloride solution, add potassium chloride crude product, form potassium chloride supersaturated solution;
(9) double-filtration: by potassium chloride supersaturated solution after 10～20 order filters, squeeze in heating kettle, heats heating kettle to 100 DEG C, and potassium to be chlorinated all dissolves, and after 300～350 order hot-water filters filter, obtains the refining saturated solution of potassium chloride;
(10) crystallization again: through vacuum cooling crystallizer, refining for potassium chloride saturated solution is cooled to 20～28 DEG C, obtains the refining slurry of potassium chloride;
(11) dehydration separates: by refining for potassium chloride slurry through centrifuge dewatering, obtains wet refined potassium chloride, after hot air drying, obtains potassium chloride fine work.
As the further scheme of the present invention: in described step (4), the overflowing liquid of low sodium concentrator dilutes for the solid content adjustment of operation of sizing mixing and the tail salt of flotation circuit.
As the further scheme of the present invention: in described step (6), the overflowing liquid of thick potassium concentrator carries out the salt pan dry in the sun of carnallite with being pumped to raw ore screening operation and gathers.
As the further scheme of the present invention: in described step (7), essence potassium mother solution from flow to essence potassium mother liquor tank after be pumped to crystallizer reclaim and replace a part of fresh water wash thick potassium.
As the further scheme of the present invention: in described step (10)～(11), the mother solution that vacuum cooling crystallizer separates with centrifuge, as circulation fluid, is transported to operation of sizing mixing and is circulated use.
As the further scheme of the present invention: when the sodium chloride in mother solution, magnesium sulfate, magnesium chloride content summation more than 85g/L time, then no longer recycle.
Compared with prior art, the invention has the beneficial effects as follows: present invention process not only makes the potassium chloride response rate bring up to more than 62%, and effectively eliminate the soluble impurity in the potassium chloride crude product that purity is 95% and insoluble matter, the purity of Potassium Chloride Product is brought up to more than 99%. Present invention process can continuous operations, and environmentally safe, it is easy to accomplish industrialization.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, the production method of a kind of chemical reagent potassium chloride, comprise the following steps:
(1) raw ore screening: first gathered to crude ore bin by the carnallite of salt pan dry in the sun, screens out nugget bigger in raw ore and other foreign material followed by reciprocating screen, and the raw ore after screening is transported to and sizes mixing in tank after entering crusher in crushing;
(2) sizing mixing: add water in tank of sizing mixing, size mixing, the raw ore solid content controlled in slip is the preferred 30wt% of 28～32wt%(); Then in tank of sizing mixing, sodium chloride trapping agent is added as floating agent, utilize air compressor to input the air of 0.8～0.9MPa from the circulating line of pot bottom of sizing mixing to tank of sizing mixing simultaneously, make to size mixing a large amount of bubble of emerging in tank, agitated process, sodium chloride in slip optionally adheres to bubble, after stirring 2～3h, slurry pipeline transport is entered flotation cell;
(3) flotation: remove the foam of sodium chloride-containing solid through operation thick, selected, obtain low-sodium carnalite slip, the foam of sodium chloride-containing solid enters after scanning operation and enters tail salt bath, and low-sodium carnalite slip is then transported to tail salt pond;
(4) concentration of low sodium and dehalogenation: it is the preferred 35wt% of 32～35wt%(that low-sodium carnalite slip is concentrated into solid content through low sodium concentrator) after, it is pumped to low sodium centrifuge and carries out dehalogenation, obtaining qualified low-sodium carnalite ore deposit and be directly entered crystallizer, filtrate adopts low sodium band machine to reclaim fine grained carnallite after then sending into the concentration of low sodium concentrator; The overflowing liquid of low sodium concentrator dilutes for the solid content adjustment of operation of sizing mixing and the tail salt of flotation circuit;
(5) cold crystallization and thick potassium screening: the low-sodium carnalite ore deposit after centrifugal enters crystallizer, it is slowly added decomposition nut liquid, low-sodium carnalite ore deposit is carried out rate controlling decomposition and crystallization, control low-sodium carnalite ore deposit decomposition condition is utilized to control Chlorine in Solution potassium degree of supersaturation, reduce potassium chloride quantity, reach to make at normal temperatures potassium chloride to grow up purpose, and sodium chloride is liquid phase is in insatiable hunger state and can not precipitate out, it is ensured that Potassium Chloride Product quality and granularity; Crystallizer underflow slip after decomposition and crystallization is delivered to thick potassium screening machine and is carried out screening operation, and undecomposed oversize coarse grain carnallite returns crystallizer and again decomposes, and thick potassium siftage utilizes high head gravity flow mode to enter thick potassium concentrator;
(6) thick potassium concentration and dehalogenation: it is the preferred 35wt% of 32～35wt%(that thick potassium siftage is concentrated into solid content through thick potassium concentrator), then be delivered to thick potassium centrifuge and carry out dehalogenation and obtain thick potassium and filtrate, filtrate is reclaimed from flowing into thick potassium concentrator;The overflowing liquid of thick potassium concentrator carries out the salt pan dry in the sun of carnallite with being pumped to raw ore screening operation and gathers;
(7) washing, centrifuge dehydration: add fresh water in thick potassium and wash, remove the magnesium chloride of absorption and sodium chloride therein; Slip after washing centrifuge elimination essence potassium mother solution, becomes essence potassium, and drying obtains potassium chloride crude product; Essence potassium mother solution from flow to essence potassium mother liquor tank after be pumped to crystallizer reclaim and replace a part of fresh water wash thick potassium;
(8) again dissolve: at room temperature, potassium chloride crude product is made saturated potassium chloride solution, add 230～245kg potassium chloride crude product according still further to every cubic metre of saturated potassium chloride solution, in this saturated potassium chloride solution, add potassium chloride crude product, form potassium chloride supersaturated solution;
(9) double-filtration: by potassium chloride supersaturated solution after 10～20 order filters, squeeze in heating kettle, heats heating kettle to 100 DEG C, and potassium to be chlorinated all dissolves, and after 300～350 order hot-water filters filter, obtains the refining saturated solution of potassium chloride;
(10) crystallization again: through vacuum cooling crystallizer, refining for potassium chloride saturated solution is cooled to 20～28 DEG C (preferably 20～25 DEG C, with 25 DEG C of the bests), obtains the refining slurry of potassium chloride;
(11) dehydration separates: by refining for potassium chloride slurry through centrifuge dewatering, obtains wet refined potassium chloride, after hot air drying, obtains potassium chloride fine work.
In above-described embodiment, with the carnallite raw ore of 1 ton for raw material, through the process of above-mentioned steps (1)～(7), obtaining potassium chloride crude product 620～654kg, namely the response rate of potassium chloride is 62～65.4%, and the purity of this potassium chloride crude product is about 95%; By the process of step (8)～(11), obtaining potassium chloride fine work 589～620kg, the purity of this potassium chloride fine work is 99.2～99.6%, has basically reached the national standard of chemical reagent potassium chloride. Additionally, the mother solution that vacuum cooling crystallizer separates with centrifuge is as circulation fluid, is transported to operation of sizing mixing and is circulated use, when the sodium chloride in mother solution, magnesium sulfate, magnesium chloride content summation more than 85g/L time, then no longer recycle.
The present invention not only makes the potassium chloride response rate bring up to more than 62%, and effectively eliminates the soluble impurity in the potassium chloride crude product that purity is 95% and insoluble matter, and the purity of Potassium Chloride Product is brought up to more than 99%. Present invention process can continuous operations, and environmentally safe, it is easy to accomplish industrialization.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when without departing substantially from the spirit of the present invention or basic feature, it is possible to realize the present invention in other specific forms. Therefore, no matter from which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the invention rather than described above limits, it is intended that all changes in the implication of the equivalency dropping on claim and scope included in the present invention.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but not each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should be made as a whole by those skilled in the art, and the technical scheme in each embodiment through appropriately combined, can also form other embodiments that it will be appreciated by those skilled in the art that.
Claims (6)
1. the production method of a chemical reagent potassium chloride, it is characterised in that comprise the following steps:
(1) raw ore screening: first gathered to crude ore bin by the carnallite of salt pan dry in the sun, screens out nugget bigger in raw ore and other foreign material followed by reciprocating screen, and the raw ore after screening is transported to and sizes mixing in tank after entering crusher in crushing;
(2) sizing mixing: add water in tank of sizing mixing, size mixing, the raw ore solid content controlled in slip is 28～32wt%; Then in tank of sizing mixing, sodium chloride trapping agent is added as floating agent, utilize air compressor to input the air of 0.8～0.9MPa from the circulating line of pot bottom of sizing mixing to tank of sizing mixing simultaneously, make to size mixing a large amount of bubble of emerging in tank, agitated process, sodium chloride in slip optionally adheres to bubble, after stirring 2～3h, slurry pipeline transport is entered flotation cell;
(3) flotation: remove the foam of sodium chloride-containing solid through operation thick, selected, obtain low-sodium carnalite slip, the foam of sodium chloride-containing solid enters after scanning operation and enters tail salt bath, and low-sodium carnalite slip is then transported to tail salt pond;
(4) concentration of low sodium and dehalogenation: low-sodium carnalite slip is concentrated into after solid content is 32～35wt% through low sodium concentrator, it is pumped to low sodium centrifuge and carries out dehalogenation, obtaining qualified low-sodium carnalite ore deposit and be directly entered crystallizer, filtrate adopts low sodium band machine to reclaim fine grained carnallite after then sending into the concentration of low sodium concentrator;
(5) cold crystallization and thick potassium screening: the low-sodium carnalite ore deposit after centrifugal enters crystallizer, is slowly added decomposition nut liquid, low-sodium carnalite ore deposit is carried out rate controlling decomposition and crystallization; Crystallizer underflow slip after decomposition and crystallization is delivered to thick potassium screening machine and is carried out screening operation, and undecomposed oversize coarse grain carnallite returns crystallizer and again decomposes, and thick potassium siftage utilizes high head gravity flow mode to enter thick potassium concentrator;
(6) thick potassium concentration and dehalogenation: it is 32～35wt% that thick potassium siftage is concentrated into solid content through thick potassium concentrator, then be delivered to thick potassium centrifuge and carry out dehalogenation and obtain thick potassium and filtrate, filtrate is reclaimed from flowing into thick potassium concentrator;
(7) washing, centrifuge dehydration: add fresh water in thick potassium and wash, remove the magnesium chloride of absorption and sodium chloride therein; Slip after washing centrifuge elimination essence potassium mother solution, becomes essence potassium, and drying obtains potassium chloride crude product;
(8) again dissolve: at room temperature, potassium chloride crude product is made saturated potassium chloride solution, add 230～245kg potassium chloride crude product according still further to every cubic metre of saturated potassium chloride solution, in this saturated potassium chloride solution, add potassium chloride crude product, form potassium chloride supersaturated solution;
(9) double-filtration: by potassium chloride supersaturated solution after 10～20 order filters, squeeze in heating kettle, heats heating kettle to 100 DEG C, and potassium to be chlorinated all dissolves, and after 300～350 order hot-water filters filter, obtains the refining saturated solution of potassium chloride;
(10) crystallization again: through vacuum cooling crystallizer, refining for potassium chloride saturated solution is cooled to 20～28 DEG C, obtains the refining slurry of potassium chloride;
(11) dehydration separates: by refining for potassium chloride slurry through centrifuge dewatering, obtains wet refined potassium chloride, after hot air drying, obtains potassium chloride fine work.
2. the production method of chemical reagent potassium chloride according to claim 1, it is characterised in that in described step (4), the overflowing liquid of low sodium concentrator dilutes for the solid content adjustment of operation of sizing mixing and the tail salt of flotation circuit.
3. the production method of chemical reagent potassium chloride according to claim 1, it is characterised in that in described step (6), the overflowing liquid of thick potassium concentrator carries out the salt pan dry in the sun of carnallite with being pumped to raw ore screening operation and gathers.
4. the production method of chemical reagent potassium chloride according to claim 1, it is characterised in that in described step (7), essence potassium mother solution from flow to essence potassium mother liquor tank after be pumped to crystallizer reclaim and replace a part of fresh water wash thick potassium.
5. the production method of chemical reagent potassium chloride according to claim 1, it is characterised in that in described step (10)～(11), the mother solution that vacuum cooling crystallizer separates with centrifuge, as circulation fluid, is transported to operation of sizing mixing and is circulated use.
6. the production method of chemical reagent potassium chloride according to claim 5, it is characterised in that when the sodium chloride in mother solution, magnesium sulfate, magnesium chloride content summation more than 85g/L time, then no longer recycle.
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106185994A (en) * | 2016-07-05 | 2016-12-07 | 化工部长沙设计研究院 | A kind of production technology utilizing carnallite to produce high-quality potassium chloride |
| CN107188200A (en) * | 2017-07-18 | 2017-09-22 | 山东瑞源钾盐工程技术股份有限公司 | A kind of sylvite ore separates the method that efficient flotation separation produces KCL step by step |
| CN107555451A (en) * | 2017-08-28 | 2018-01-09 | 青海盐湖工业股份有限公司 | A kind of method that potassium chloride is produced using tail salt mine |
| CN107739037A (en) * | 2017-11-16 | 2018-02-27 | 中国科学院青海盐湖研究所 | A kind of method that carnallite prepares big particle diameter potassium chloride |
| CN107758696A (en) * | 2017-12-08 | 2018-03-06 | 中国科学院青海盐湖研究所 | A kind of method that potassium chloride is prepared from the solid mineral of the magnesium of ammonium containing potassium |
| CN108950208A (en) * | 2018-06-04 | 2018-12-07 | 山东习尚喜新材料科技股份有限公司 | A kind of continuous production device and technique of metallic potassium |
| CN109368665A (en) * | 2018-12-04 | 2019-02-22 | 青海盐湖工业股份有限公司 | A kind of direct flotation tail salt recovery processing method and system |
| CN109541127A (en) * | 2018-12-19 | 2019-03-29 | 青海盐湖工业股份有限公司 | The method that a kind of pair of saturated potassium chloride solution carries out assay |
| CN109626398A (en) * | 2019-02-13 | 2019-04-16 | 青海盐湖工业股份有限公司 | A kind of method of essence potassium slurry concentration dehalogenation |
| CN109678181A (en) * | 2019-01-03 | 2019-04-26 | 青海盐湖工业股份有限公司 | A kind of production system and production technology of bulky grain producing potassium chloride from carnallite |
| CN110002469A (en) * | 2019-04-12 | 2019-07-12 | 青海盐湖工业股份有限公司 | A kind of method and system of circulation production potassium chloride and sodium chloride |
| CN110028084A (en) * | 2019-04-11 | 2019-07-19 | 中蓝长化工程科技有限公司 | A method of the potassium chloride rate of recovery is improved using mine water |
| CN111170336A (en) * | 2020-02-24 | 2020-05-19 | 青海盐湖工业股份有限公司 | Method for preparing potassium chloride from carnallite raw ore |
| CN111661855A (en) * | 2019-03-06 | 2020-09-15 | 青海盐湖工业股份有限公司 | Method and system for producing potassium chloride by recycling byproducts |
| CN112551553A (en) * | 2019-09-06 | 2021-03-26 | 中蓝长化工程科技有限公司 | High-recovery-rate production process for extracting potassium chloride by utilizing carnallite ore |
| CN114538475A (en) * | 2022-03-18 | 2022-05-27 | 青海盐湖工业股份有限公司 | Potassium chloride production system and production method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106185994A (en) * | 2016-07-05 | 2016-12-07 | 化工部长沙设计研究院 | A kind of production technology utilizing carnallite to produce high-quality potassium chloride |
| CN107188200A (en) * | 2017-07-18 | 2017-09-22 | 山东瑞源钾盐工程技术股份有限公司 | A kind of sylvite ore separates the method that efficient flotation separation produces KCL step by step |
| CN107188200B (en) * | 2017-07-18 | 2019-07-16 | 山东瑞源钾盐工程技术股份有限公司 | A kind of method that sylvite ore separates efficient flotation separation production KCL step by step |
| CN107555451A (en) * | 2017-08-28 | 2018-01-09 | 青海盐湖工业股份有限公司 | A kind of method that potassium chloride is produced using tail salt mine |
| CN107555451B (en) * | 2017-08-28 | 2020-06-12 | 青海盐湖工业股份有限公司 | Method for producing potassium chloride by using tail salt ore |
| CN107739037A (en) * | 2017-11-16 | 2018-02-27 | 中国科学院青海盐湖研究所 | A kind of method that carnallite prepares big particle diameter potassium chloride |
| CN107758696A (en) * | 2017-12-08 | 2018-03-06 | 中国科学院青海盐湖研究所 | A kind of method that potassium chloride is prepared from the solid mineral of the magnesium of ammonium containing potassium |
| CN107758696B (en) * | 2017-12-08 | 2019-09-17 | 中国科学院青海盐湖研究所 | A method of potassium chloride is prepared from the solid mineral of the magnesium of ammonium containing potassium |
| CN108950208B (en) * | 2018-06-04 | 2023-09-29 | 山东习尚喜新材料科技股份有限公司 | Continuous production device and process of metal potassium |
| CN108950208A (en) * | 2018-06-04 | 2018-12-07 | 山东习尚喜新材料科技股份有限公司 | A kind of continuous production device and technique of metallic potassium |
| CN109368665A (en) * | 2018-12-04 | 2019-02-22 | 青海盐湖工业股份有限公司 | A kind of direct flotation tail salt recovery processing method and system |
| CN109541127A (en) * | 2018-12-19 | 2019-03-29 | 青海盐湖工业股份有限公司 | The method that a kind of pair of saturated potassium chloride solution carries out assay |
| CN109678181A (en) * | 2019-01-03 | 2019-04-26 | 青海盐湖工业股份有限公司 | A kind of production system and production technology of bulky grain producing potassium chloride from carnallite |
| CN109626398A (en) * | 2019-02-13 | 2019-04-16 | 青海盐湖工业股份有限公司 | A kind of method of essence potassium slurry concentration dehalogenation |
| CN111661855B (en) * | 2019-03-06 | 2021-07-23 | 青海盐湖工业股份有限公司 | Method and system for producing potassium chloride by recycling byproducts |
| CN111661855A (en) * | 2019-03-06 | 2020-09-15 | 青海盐湖工业股份有限公司 | Method and system for producing potassium chloride by recycling byproducts |
| CN110028084A (en) * | 2019-04-11 | 2019-07-19 | 中蓝长化工程科技有限公司 | A method of the potassium chloride rate of recovery is improved using mine water |
| CN110028084B (en) * | 2019-04-11 | 2021-09-07 | 中蓝长化工程科技有限公司 | Method for improving recovery rate of potassium chloride by using mine water |
| CN110002469A (en) * | 2019-04-12 | 2019-07-12 | 青海盐湖工业股份有限公司 | A kind of method and system of circulation production potassium chloride and sodium chloride |
| CN112551553A (en) * | 2019-09-06 | 2021-03-26 | 中蓝长化工程科技有限公司 | High-recovery-rate production process for extracting potassium chloride by utilizing carnallite ore |
| CN112551553B (en) * | 2019-09-06 | 2022-04-29 | 中蓝长化工程科技有限公司 | High-recovery-rate production process for extracting potassium chloride by utilizing carnallite ore |
| CN111170336A (en) * | 2020-02-24 | 2020-05-19 | 青海盐湖工业股份有限公司 | Method for preparing potassium chloride from carnallite raw ore |
| CN111170336B (en) * | 2020-02-24 | 2022-04-22 | 青海盐湖工业股份有限公司 | Method for preparing potassium chloride from carnallite raw ore |
| CN114538475A (en) * | 2022-03-18 | 2022-05-27 | 青海盐湖工业股份有限公司 | Potassium chloride production system and production method |
| CN114538475B (en) * | 2022-03-18 | 2023-10-17 | 青海盐湖工业股份有限公司 | Potassium chloride production system and production method |
| CN114804971A (en) * | 2022-05-30 | 2022-07-29 | 广西凤山桂粤实业有限公司 | Special mixed fertilizer for treating aniseed diseases and pests |
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Application publication date: 20160615 |