CN1065213C - Process for preparing soft leonite - Google Patents
Process for preparing soft leonite Download PDFInfo
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- CN1065213C CN1065213C CN98108686A CN98108686A CN1065213C CN 1065213 C CN1065213 C CN 1065213C CN 98108686 A CN98108686 A CN 98108686A CN 98108686 A CN98108686 A CN 98108686A CN 1065213 C CN1065213 C CN 1065213C
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- schoenite
- magnesium
- potassium
- thermosol
- novel method
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The present invention relates to a mew method for preparing schoenite, which comprises: mineral raw materials containing potassium, magnesium, sulfate radicals, sodium and chlorine ions are mixed with water; the quality ratio of the potassium to the magnesium to the sulfate radicals in the mixing materials is controlled; the mixing materials are treated with thermosol reaction at 20 to 100 DEG C, and the reaction time is controlled; after reaction, solid-liquid mixing slurry is formed, and is separated to obtain clear thermosol saturated solution; the clear thermosol saturated solution is naturally cooled to 0 to 25 DEG C, and schoenite and schoenite mother liquid are prepared by solid-liquid separation. The final product prepared by the present invention has the advantages of high quality, high single conversion rate of potassium, simple technological process and low cost.
Description
The present invention relates to a kind of novel method of utilizing the salt lake mineral wealth to produce schoenite.
Knownly produce the method for schoenite, USSR (Union of Soviet Socialist Republics) patent 998,348 (1983) is arranged from sulfate type salt lake bittern.Chinese patent 87103934.6 and 88103389.8.The first step of these three kinds of methods all is that bittern evaporation is obtained potassium magnesium mixed salt, and the second step processing is had nothing in common with each other.The USSR (Union of Soviet Socialist Republics) patent adds water at twice to potassium magnesium mixed salt to be handled, and for being partly dissolved, temperature was-2-30 ℃ when the fs added water treatment.Be the CL mode when subordinate phase adds water treatment, isolate water-insoluble, and be-during 2-2 ℃, separate out schoenite by the gained solution crystallization in temperature.This method weak point is twice processing ore deposit, the single transformation efficiency of potassium lower (27-43%), and also operating process is more loaded down with trivial details.Two patents of China all are potassium magnesium mixed salt to be added water Hui Rong transform crystallization again and separate out schoenite, this method weak point is that water loss is bigger, production cycle is longer, it is higher mainly to contain water-insoluble in the product, and potassium magnesium mixed salt ore deposit should not fix the ratio of water, the ratio that should decide water on the quality in potassium magnesium mixed salt ore deposit.
Main purpose of the present invention is that a kind of final product is of high grade in order to provide, the single transformation efficiency height of potassium, the novel method of producing schoenite that technological process is simple, cost is low.Another object of the present invention also is to provide a kind of mother liquor reusable edible, and available mineral wealth are abundant.
Main purpose of the present invention can realize by following measure:
A kind of novel method of producing schoenite, be that the raw mineral materials that will contain potassium, magnesium, sulfate radical, sodium, chlorion mixes with water, the mass ratio of potassium, magnesium, sulfate radical and water is 1 in the control mixture: (0.35-1.10): (1.45-3.50): (9.00-16.00); Mixture carries out the thermosol reaction under 20-100 ℃, the reaction times is 15-60 minute; The solid-liquid mixed slurry that the reaction back forms is isolated rubble salt and water-insoluble, obtains the saturated clear liquid of thermosol; The saturated clear liquid of thermosol is naturally cooled to 0-25 ℃, and solid-liquid separation can get schoenite and schoenite mother liquor.
Purpose of the present invention also can realize by following measure:
The molten reaction of described schoenite mother liquor returnable heat is prepared burden.Also can carry out spontaneous evaporation recycles.
The described raw mineral materials that contains potassium, magnesium, sulfate radical, sodium, chlorion can be the sulfate type salt lake bittern evaporation and obtains potassium magnesium mixing salt raw material.
The described raw mineral materials that contains potassium, magnesium, sulfate radical, sodium, chlorion can be the mixture of salt lake potassium resource, magnesium resource and thenardite.
Described salt lake potassium resource can be mineral wealth such as carnallitite, sylvite, thick potash fertilizer, potassium magnesium mixed salt, kainite, leonite.
Described magnesium resource can be mineral wealth such as carnallitite, sal epsom, magnesium chloride and magnesium-containing brine.
The present invention has following advantage compared to existing technology:
1, the present invention can utilize the natural condition in area, salt lake self, select potassium, magnesium, the sulfate ion mixture of proper ratio for use, under the situation of normal temperature or heating, transform, the saturated clear liquid that will transform again salt Tanaka naturally cooling or in equipment naturally cooling, get final product high-grade schoenite, its grade is greater than 97.0%, and the content of sodium-chlor is less than 1.0%, and the content of water-insoluble is less than 0.1%.
2, the present invention utilizes characteristics such as the geographic temperature difference per day in salt lake is big, year low temperature time is long, has reduced production cost, has simplified technological process, and is with short production cycle, need fewly with the fresh water amount, and the product crystalline particle is moderate, is convenient to further be processed into potassium product.
3, the mother liquor reusable edible that produces of the present invention has improved the utilization ratio of potassium, and wherein the single transformation efficiency of potassium reaches more than 50%.
4, raw mineral materials aboundresources of the present invention.
The present invention also will make further detailed art in conjunction with the embodiments and state:
Embodiment one:
Certain salt lake brine evaporation obtains 1kg potassium magnesium mixed salt, and it consists of: NaCl12.06%, KCl16.06%, MgSO
424.58%, MgCl
212.31%, H
2O34.7%.With this potassium magnesium mixed salt ore deposit of 750g water mixed decomposition, the mass ratio of potassium, magnesium, sulfate radical and water is 1: 0.96: 2.33 in its mixture: 13.02 under 25 ℃ of conditions; Mixing back stirring conversion reaction is 30 minutes, isolates undissolved sodium-chlor and water-insoluble under this temperature, and solution is cooled to 0 ℃ in the salt pan, isolates the 250g schoenite, and it forms K
2SO
4MgSO
46H
2O98.85%, NaCl0.70%, the single transformation efficiency of potassium is 57.61%; Schoenite mother liquor after separating is returned processing potassium magnesium mixed salt ore deposit recycle or return salt pan evaporation recycling, this mother liquor consists of: NaCl7.43%, KCl4.33%, MgSO
45.56%, MgCl
212.47%, H
2O70.21%.
Embodiment two:
Obtain 1kg potassium magnesium mixed salt by certain sulfate type salt lake bittern evaporation, it consists of: NaCl12.55%, KCl16.65%, MgSO
423.86%, MgCl
212.75%, H
2O34.19%.With this potassium magnesium mixed salt ore deposit of 8000g water mixed decomposition, the mass ratio of potassium, magnesium, sulfate radical and water is 1: 0.92: 2.18 in its mixed thing: 13.08; Mix the back at 49 ℃ of following stirring reactions, the reaction times is 30 minutes, isolates undissolved sodium-chlor and water-insoluble under this temperature, and solution is cooled to 11 ℃ in the salt pan, isolates the 250g schoenite, its composition: K
2SO
4MgSO
46H
2O98.50%, NaCl0.95%, the single transformation efficiency of potassium is 52.55%; Schoenite mother liquor after separating is returned heat of solution handle the ore deposit recycling of potassium magnesium mixed salt or return salt pan evaporation recycling, this mother liquor consists of: NaCl7.63%, KCl4.50%, MgSO
45.70%, MgCl
212.05%, H
2O70.12%.
Embodiment three:
Get thick potash fertilizer 100g, wherein consist of: KCl70.00%, NaCl23.17%, MgCl22.98%, water-insoluble 3.85%; MgSO
47H
2O226g, water 305g; Above-mentioned three kinds of raw materials are mixed, and the mass ratio of the potassium in the mixture, magnesium, sulfate radical and water is 1: 0.6 3: 2.40: 11.46; Mixture is at 70 ℃ of following stirring reactions, and the reaction times is 30 minutes, isolates rubble salt and water-insoluble, and its solution is cooled to 0 ℃, isolates the 107.0g schoenite, and it forms K
2SO
4MgSO
46H
2O99.05%, NaCl0.71%, the single transformation efficiency of potassium is 56.58%; Schoenite mother liquor after separating is returned the heat of solution batching, or return the salt pan solar evaporation and recycle; This mother liquor consists of: NaCl8.12%, KCl4.84%, MgSO
47.37%, MgCl
24.55%, H
2O68.86%.
Embodiment four:
Getting kainite, carnallitite and water mixes, the mass ratio of the potassium in its mixture, magnesium, sulfate radical and water is 1: 0.49: 3.50: 16, mixture was 90 ℃ of thermosol reactions 45 minutes, isolate rubble salt and water-insoluble, saturated thermosol clear liquid after separating is cooled to 25 ℃ obtains schoenite and mother liquor, mother liquid evaporation is reclaimed.
Claims (7)
1, a kind of novel method of producing schoenite, it is characterized in that the raw mineral materials that will contain potassium, magnesium, sulfate radical, sodium, chlorion mixes with water, the mass ratio of potassium, magnesium, sulfate radical and water is 1 in the mixture: (0.35-1.10): (1.45-3.50): (9.00-16.00); Mixture carries out the thermosol reaction under 20-100 ℃, the reaction times is 15-60 minute; The solid-liquid mixed slurry that the reaction back forms is isolated rubble salt and water-insoluble, obtains the saturated clear liquid of thermosol; The saturated clear liquid of thermosol is naturally cooled to 0-25 ℃, and solid-liquid separation can get schoenite and schoenite mother liquor.
2, a kind of novel method of producing schoenite as claimed in claim 1 is characterized in that the schoenite mother liquor is returned the thermosol step of reaction prepares burden.
3, a kind of novel method of producing schoenite as claimed in claim 2 is characterized in that the schoenite mother liquor can be carried out spontaneous evaporation to be recycled.
4, a kind of novel method of producing schoenite as claimed in claim 1 is characterized in that the described raw mineral materials that contains potassium, magnesium, sulfate radical, sodium, chlorion can be the sulfate type salt lake bittern evaporation and obtains potassium magnesium mixed salt raw material.
5, a kind of novel method of producing schoenite as claimed in claim 1 is characterized in that the described raw mineral materials that contains potassium, magnesium, sulfate radical, sodium, chlorion can be the mixture of salt lake potassium resource, magnesium resource and thenardite.
6, a kind of novel method of producing schoenite as claimed in claim 5 is characterized in that described salt lake potassium resource is included as carnallitite, sylvite, thick potash fertilizer, potassium magnesium mixed salt, kainite, leonite mineral wealth.
7, a kind of novel method of producing schoenite as claimed in claim 5 is characterized in that described magnesium resource comprises carnallitite, sal epsom, magnesium chloride and contains the old bittern mineral wealth of magnesium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98108686A CN1065213C (en) | 1998-05-21 | 1998-05-21 | Process for preparing soft leonite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98108686A CN1065213C (en) | 1998-05-21 | 1998-05-21 | Process for preparing soft leonite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1236734A CN1236734A (en) | 1999-12-01 |
| CN1065213C true CN1065213C (en) | 2001-05-02 |
Family
ID=5219751
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98108686A Expired - Fee Related CN1065213C (en) | 1998-05-21 | 1998-05-21 | Process for preparing soft leonite |
Country Status (1)
| Country | Link |
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| CN (1) | CN1065213C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105060329B (en) * | 2015-08-03 | 2017-04-26 | 茫崖兴元钾肥有限责任公司 | Method for producing picromerite by taking potassium chloride and mirabilite as raw materials |
| CN107903138A (en) * | 2017-12-01 | 2018-04-13 | 中国科学院青海盐湖研究所 | A kind of preparation method and applications of potassic-magnesian fertilizer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1038252A (en) * | 1988-05-31 | 1989-12-27 | 中国科学院青海盐湖研究所 | The method that cold process, hot legal system are got the higher-grade schoenite |
| CN1038799A (en) * | 1988-04-12 | 1990-01-17 | 韩蔚田 | A kind of method of producing schoenite by solid state reaction |
| CN1076435A (en) * | 1992-03-13 | 1993-09-22 | 化学工业部化学矿产地质研究院 | Saltpan method is produced schoenite and vitriolate of tartar |
-
1998
- 1998-05-21 CN CN98108686A patent/CN1065213C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1038799A (en) * | 1988-04-12 | 1990-01-17 | 韩蔚田 | A kind of method of producing schoenite by solid state reaction |
| CN1038252A (en) * | 1988-05-31 | 1989-12-27 | 中国科学院青海盐湖研究所 | The method that cold process, hot legal system are got the higher-grade schoenite |
| CN1076435A (en) * | 1992-03-13 | 1993-09-22 | 化学工业部化学矿产地质研究院 | Saltpan method is produced schoenite and vitriolate of tartar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1236734A (en) | 1999-12-01 |
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