CN1133274A - Method of extracting potassium from potash feldspar - Google Patents

Method of extracting potassium from potash feldspar Download PDF

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Publication number
CN1133274A
CN1133274A CN 95104123 CN95104123A CN1133274A CN 1133274 A CN1133274 A CN 1133274A CN 95104123 CN95104123 CN 95104123 CN 95104123 A CN95104123 A CN 95104123A CN 1133274 A CN1133274 A CN 1133274A
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CN
China
Prior art keywords
potassium
felspar sand
extracting
potassium felspar
feature
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Pending
Application number
CN 95104123
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Chinese (zh)
Inventor
杨冬青
Original Assignee
杨冬青
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Publication date
Application filed by 杨冬青 filed Critical 杨冬青
Priority to CN 95104123 priority Critical patent/CN1133274A/en
Publication of CN1133274A publication Critical patent/CN1133274A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05DINORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D1/00Fertilisers containing potassium
    • C05D1/04Fertilisers containing potassium from minerals or volcanic rocks

Abstract

The present invention relates to a method for extracting potassium by using calcium sulfate, calcium oxide and surfactant to treat potash feldspar. The potash feldspar is ground into fine powder, then is uniformly mixed with calcium sulfate, calcium oxide and surfactant, then the obtained mixture is stored for a period of time, and often stirred, and then the mixture is mixed with water and is made into the ore pulp, and finally the ore pulp is treated by using high-pressure reaction still. The potash feldspar treated by using said invented method can be decomposed into deposit matter and potassium-contained solution. The impurity content in the potassium product is less than 3%, and the potassium recovery is more than 90%.

Description

A kind of method of from potassium felspar sand, extracting potassium
The invention belongs to fertiliser production, be a kind of method of from potassium felspar sand, extracting potassium.
The method of known potash fertilizer production has " containing K composite fertilizer and production method ", and (CO4B35/56 CH1030567A), is to be raw material with iron-smelting blast furnace coal gas ash, is that binding agent forms through mechanical pelleting with the plant paste.Another kind of " production method of potassium primary phosphate, vitriolate of tartar " (CO5B17/00 CN1060084A), is to be raw material with phosphoric acid one hydrogen and Repone K.A kind of in addition " directly producing vitriolate of tartar from refractory potassic mine " (CN1068098A), is that the potassium ore deposit is mixed with fusing assistant rhombspar, Wingdale, through smelting furnace rotary kiln pyroprocessing.Make that insoluble potassium element becomes processable potassium element in the potassium ore deposit.
The objective of the invention is to reduce the potash fertilizer production cost, improve the potassium rate of recovery.
The objective of the invention is to use the additive treating potassium felspar sand, and without calcination processing.Make potassium felspar sand and additive under lower temperature, react, be decomposed into the throw out of processable potassium and insoluble.
The present invention is a raw material with the potassium felspar sand by potassium felspar sand, calcium sulfate and calcium oxide is levigate, calcium sulfate and calcium oxide as additive, add the tensio-active agent uniform mixing again, mixture is deposited for some time and is often stirred, and handles with autoclave then, obtains insoluble throw out Ca 3Al 2Sio 4(OH) 6, and obtain processable and contain potassium solution, containing potassium solution through concentrating, filter, add acid, crystallization, oven dry and obtain the potassium product.Throw out is good cement raw material.
The potassium rate of recovery is greater than 90% after above-mentioned processing, K in the potassium product 2O content is greater than 40%.
Accompanying drawing is the technical process of the embodiment of the invention.The 1-potassium felspar sand, 2-calcium sulfate, the 3-calcium oxide, the 4-tensio-active agent, 5-is levigate, the 6-batching, 7 deposit, and 8-adds water preparation ore pulp, and the 9-autoclave is handled, the 10-acid treatment, and 11-concentrates, and 12-filters, 13-filtrate, 14-crystallization, 15-oven dry, 16-potassium product, 17-filter residue.
Further specify below in conjunction with embodiment and accompanying drawing, the raw material potassium felspar sand is for containing K 2The ore of O8-16%.Additive is calcium sulfate, calcium oxide.Tensio-active agent is a sodium stearate.Potassium felspar sand and additive must be levigate to 100-400 order granularity.Potassium felspar sand, calcium sulfate, calcium oxide, tensio-active agent uniform mixing.Calcium oxide, calcium sulphate content (weight ratio) respectively are 5-20%.Mixture was deposited 20 days and often stirred, and stir 5-10 every day.Each 30 minutes.Then mixture is added water and be mixed with ore pulp, the ore pulp liquid-solid ratio is 2: 1~5: 1.The ore pulp autoclave of packing into is immediately handled.Treatment temp is 200-400 ℃.Processing pressure is 30-70atm, and the treatment time is 100 minutes.
By above-mentioned processing.Potassium felspar sand is decomposed into throw out and water-soluble potassium.Main K in the solution +Ion and a spot of silicon, aluminium.To contain potassium solution through concentrate, filtration, crystallization, oven dry is handled and obtain the potassium product.Foreign matter content is less than 3% in the potassium product.The potassium rate of recovery is greater than 90%.
The invention has the advantages that just can be from the slightly solubility potassic feldspar without the high-temperature calcination ore The middle potassium that extracts, technology is simple, and is with low cost, and the potassium rate of recovery is greater than 90%. Filter residue can Recycle and produce cement, pollution-free. Can be used for chemical fertilizer factory, cement plant, small towns enterprise Industry and chemical plant production potash fertilizer products.

Claims (5)

1, a kind of method of extracting potassium from potassium felspar sand adopts existing autoclave chemical mineral processing method that potassium felspar sand is handled.It is characterized in that potassium felspar sand and additive are mixed into batching.Through deposit, stirring, autoclave handle, make potassium felspar sand and additive generation chemical reaction and obtain containing potassium solution and insoluble throw out.To contain again potassium solution through concentrate, filtration, crystallization, oven dry and obtain containing K 2O reaches the first product more than 40%, and the potassium rate of recovery reaches 90%.
2, a kind of method of extracting potassium from potassium felspar sand according to claim 1, its feature is that also said additive is calcium sulfate, calcium oxide and tensio-active agent.
3, according to claim 1 described a kind of method of from potassium felspar sand, extracting potassium.Its feature is that also said autoclave treatment temp is 100-400 ℃.
4, according to claim 1 described a kind of method of extracting from potassium felspar sand, its feature is that also the said autoclave treatment time is 10-200 minute.
5, according to claim 1 described a kind of method of extracting potassium from potassium felspar sand, its feature also is said depositing, and churning time is 5-30 days.
CN 95104123 1995-04-13 1995-04-13 Method of extracting potassium from potash feldspar Pending CN1133274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 95104123 CN1133274A (en) 1995-04-13 1995-04-13 Method of extracting potassium from potash feldspar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 95104123 CN1133274A (en) 1995-04-13 1995-04-13 Method of extracting potassium from potash feldspar

Publications (1)

Publication Number Publication Date
CN1133274A true CN1133274A (en) 1996-10-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 95104123 Pending CN1133274A (en) 1995-04-13 1995-04-13 Method of extracting potassium from potash feldspar

Country Status (1)

Country Link
CN (1) CN1133274A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1062252C (en) * 1996-11-29 2001-02-21 中国地质大学(北京) Potash fertilizer producing method by using potassium-rock
CN1078564C (en) * 1998-11-09 2002-01-30 裴敬 Technology of preparing potassium sulfate using leopoldite
CN1308265C (en) * 2002-12-19 2007-04-04 中国科学院地质与地球物理研究所 Method for preparing potash manure (kali salt) from potassium-rich rock using hydrothermal chemical reaction
CN1318297C (en) * 2005-09-12 2007-05-30 鄂州市长润农业生态技术有限公司 Potash feldspar wet method decomposition and production process
CN101831561A (en) * 2010-04-23 2010-09-15 华东理工大学 Method for decomposing potassium feldspar to extract soluble potassium
CN102230081A (en) * 2011-04-23 2011-11-02 大悟华龙吕王石材有限公司 Acid leaching method for extracting potassium, aluminum and silicon elements from potassium feldspar
CN101735668B (en) * 2009-12-10 2013-01-23 浙江工业大学 Method for preparing active feldspar micro powder
CN103290234A (en) * 2013-06-28 2013-09-11 天津水泥工业设计研究院有限公司 Method for extracting soluble potassium by utilizing water-insoluble potassium ores
CN103819228A (en) * 2014-02-26 2014-05-28 化工部长沙设计研究院 Method for preparing potash fertilizer and alumina silicate from potash feldspar
CN103937976A (en) * 2014-02-26 2014-07-23 化工部长沙设计研究院 Method used for preparing dissoluble potassium via decomposition desilication of potash feldspar

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1062252C (en) * 1996-11-29 2001-02-21 中国地质大学(北京) Potash fertilizer producing method by using potassium-rock
CN1078564C (en) * 1998-11-09 2002-01-30 裴敬 Technology of preparing potassium sulfate using leopoldite
CN1308265C (en) * 2002-12-19 2007-04-04 中国科学院地质与地球物理研究所 Method for preparing potash manure (kali salt) from potassium-rich rock using hydrothermal chemical reaction
CN1318297C (en) * 2005-09-12 2007-05-30 鄂州市长润农业生态技术有限公司 Potash feldspar wet method decomposition and production process
CN101735668B (en) * 2009-12-10 2013-01-23 浙江工业大学 Method for preparing active feldspar micro powder
CN101831561A (en) * 2010-04-23 2010-09-15 华东理工大学 Method for decomposing potassium feldspar to extract soluble potassium
CN102230081A (en) * 2011-04-23 2011-11-02 大悟华龙吕王石材有限公司 Acid leaching method for extracting potassium, aluminum and silicon elements from potassium feldspar
CN102230081B (en) * 2011-04-23 2012-11-21 大悟华龙吕王石材有限公司 Acid leaching method for extracting potassium, aluminum and silicon elements from potassium feldspar
CN103290234A (en) * 2013-06-28 2013-09-11 天津水泥工业设计研究院有限公司 Method for extracting soluble potassium by utilizing water-insoluble potassium ores
CN103819228A (en) * 2014-02-26 2014-05-28 化工部长沙设计研究院 Method for preparing potash fertilizer and alumina silicate from potash feldspar
CN103937976A (en) * 2014-02-26 2014-07-23 化工部长沙设计研究院 Method used for preparing dissoluble potassium via decomposition desilication of potash feldspar
CN103819228B (en) * 2014-02-26 2016-03-09 化工部长沙设计研究院 A kind of method utilizing potassium felspar sand to prepare potash fertilizer and pure aluminium silicate

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