CN1482102A - Process of producing potassium sulfate magnesium fertilizer - Google Patents
Process of producing potassium sulfate magnesium fertilizer Download PDFInfo
- Publication number
- CN1482102A CN1482102A CNA03157856XA CN03157856A CN1482102A CN 1482102 A CN1482102 A CN 1482102A CN A03157856X A CNA03157856X A CN A03157856XA CN 03157856 A CN03157856 A CN 03157856A CN 1482102 A CN1482102 A CN 1482102A
- Authority
- CN
- China
- Prior art keywords
- potassium
- mixed salt
- water
- salt
- reaction
- 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.)
- Granted
Links
Landscapes
- Fertilizers (AREA)
Abstract
The present invention relates to salt chemical technology, and is specially the technological process of producing potassium magnesium sulfate fertilizer. The technological process is a two-step conversion process, including the first conversion step of mixing mixed potassium salt with water, mechanical separation to eliminate rock salt and mother liquid and to obtain mixed potassium and magnesium salt; and the second conversion step of mixing mixed potassium and magnesium salt with water and solid-liquid separation to obtain potassium magnesium sulfate fertilizer. The technological conditions include the reaction temperature of the first step being normal temperature to 85 deg.c, and the water adding amount being determined based on the requirement of completely converting mixed potassium salt into mixed potassium and magnesium salt. The technological process has high yield, low production cost, easy-to-control technological conditions, etc.
Description
One, technical field: the invention belongs to the salt chemical engineering technical field, relate in particular to a kind of production technique of potash magnesium sulphate fertilizer.
Two, background technology: the chemical name of potash magnesium sulphate fertilizer is a schoenite, and its chemical molecular formula is MgSO
4K
2SO
46H
2O, it is the raw materials for production of vitriolate of tartar, can directly impose on farm crop as fertilizer again.With the potassium ores that vitriolate type bittern was produced, it is with sylvite, carnallitite, kainite, the mixture of multi mineral such as schoenite, halite, epsom salt, technology with potassium mixed salt production potash magnesium sulphate fertilizer mainly contains two kinds at present: a kind of is to add water or add the direct decomposition and inversion of vitriolate of tartar saturated solution again to become potash magnesium sulphate fertilizer in the potassium mixed salt, and the sodium-chlor in the raw material potassium mixed salt advances people's liquid phase; The 2nd, utilize flotation process to separate to add water again or add the vitriolate of tartar saturated solution again behind the sodium-chlor to change into potash magnesium sulphate fertilizer.The shortcoming of first kind of technology is that water consumption is big, and productive rate and raw material yield are low, raw materials quality is required high.The defective of second kind of technology is that operational path is long, and facility investment is big, the production cost height, and flotation agent influences quality product.
Three, summary of the invention: the objective of the invention is to develop a kind of new potash magnesium sulphate fertilizer production technique at the defective that has the technology existence now, it has raw material rate of recovery height, production cost is low, facility investment is little, technology is easy to control, external raw material need be do not added, the advantages such as potassium mixed salt raw material of different mass can be adapted to.Its technical scheme is: the production technique feature of this potash magnesium sulphate fertilizer is to adopt two sections conversion methods, the technical process of first section conversion method adds the water conversion reaction for the potassium mixed salt, mechanical separation removes halite and mother liquor gets potassium magnesium mixed salt, the technical process of second section conversion method is that potassium magnesium mixed salt adds the water conversion reaction, solid-liquid separation gets potash magnesium sulphate fertilizer, the temperature of reaction that its processing condition add water conversion reaction operation for the potassium mixed salt is a normal temperature-85 ℃, its amount of water all is converted into potassium magnesium mixed salt by potassium mixed salt under the temperature of reaction condition and determines, the temperature of reaction that potassium magnesium mixed salt adds water conversion reaction operation is a normal temperature, and its amount of water all is converted into potash magnesium sulphate fertilizer by potassium magnesium mixed salt under the temperature of reaction condition and determines.Raw material potassium mixed salt is the product of producing with vitriolate type bittern, and it is the mixture of mineral such as sylvite, carnallitite, kainite, schoenite, halite, epsom salt.It is at potassium mixed salt Zhong Jiashui and two sections conversion fluids that the potassium mixed salt adds water conversion reaction operation, make potassium-bearing mineral be converted into potassium magnesium mixed salt, keep halite mineral crystal granularity constant simultaneously as far as possible, cause the process of the granularity of halite mineral much larger than the granularity of the potassium magnesium mixed salt of new formation, this technology is the present technique core.Two sections conversion fluids are mother liquors that solid-liquid separation gets the potash magnesium sulphate fertilizer operation in second section conversion method, abbreviate two sections conversion fluids as.Adding in the water conversion procedure at the potassium mixed salt, is for fast reaction speed when temperature of reaction is higher than normal temperature.Potassium magnesium mixed salt is the mixture with multiple potassium-bearing minerals such as kainite, schoenite, leonites.Mechanical separation is removed halite and mother liquor, and to get potassium magnesium mixed salt then be to utilize after the conversion reaction granularity between the halite and potassium magnesium mixed salt poor, separate halite with the method for mechanical separation earlier, and then with solid-liquid separating equipment with potassium magnesium mixed salt, mother liquor separating process, its mother liquor abbreviates one section conversion fluid as.The method of mechanical separation halite has method of sieving, hydraulic elutria-tion method, gravity size classification methods etc., and this separation method also is the core of present technique.One section conversion fluid returns the salt pan and reclaims, and it is to add the process that people's water is converted into potassium magnesium mixed salt potash magnesium sulphate fertilizer in potassium magnesium mixed salt that potassium magnesium mixed salt adds water conversion reaction operation.It then is to adopt the method for solid-liquid separation to make the process of potash magnesium sulphate fertilizer that solid-liquid separation gets the potash magnesium sulphate fertilizer operation, and its mother liquor is two sections conversion fluids, in order to improve the productive rate of raw material, preferably two sections conversion fluids is turned back to the potassium mixed salt and adds in the water conversion reaction operation.
Technology of the present invention and existing technology compare, and it has raw material rate of recovery height, and facility investment is little, and production cost is low, and technology is easy to control, does not need to add external raw material, can adapt to the advantages such as potassium mixed salt raw material of different mass.
Four, embodiment:
Embodiment 1: the potassium mixed salt of getting multi mineral such as containing sylvite, carnallitite, kainite, halite, epsom salt is a raw material, in temperature of reaction is to carry out the potassium mixed salt under the condition of normal temperature to add the water conversion reaction, and its amount of water records according to experiment.Mechanical separation is removed the mechanical separation that halite and mother liquor get potassium magnesium mixed salt operation and is adopted method of sieving, and what particle was big is halite, and what particle was little is potassium magnesium mixed salt.Potassium magnesium mixed salt adds the water conversion reaction at normal temperatures again, and amount of water is recorded by experiment, just can make potash magnesium sulphate fertilizer through solid-liquid separation again.
Embodiment 2: the potassium mixed salt of getting mineral such as containing sylvite, carnallitite, schoenite, epsom salt is a raw material, be to carry out the potassium mixed salt under 70 ℃ the condition to add the water conversion reaction in temperature of reaction, its amount of water is still tested and is recorded, and mechanical separation adopts hydraulic elutria-tion method.Potassium magnesium mixed salt adds the water conversion reaction at normal temperatures, and amount of water can make the potassium magnesium sulfate fertilizer product by experimental calculation through solid-liquid separation.
Claims (2)
1, a kind of production technique of potash magnesium sulphate fertilizer, it is characterized in that two sections conversion methods of its employing, the technical process of first section conversion method adds the water conversion reaction for the potassium mixed salt, mechanical separation removes halite and mother liquor gets potassium magnesium mixed salt, the technical process of second section conversion method is that potassium magnesium mixed salt adds the water conversion reaction, solid-liquid separation gets potash magnesium sulphate fertilizer, the temperature of reaction that its processing condition add water conversion reaction operation for the potassium mixed salt is a normal temperature-85 ℃, its amount of water all is converted into potassium magnesium mixed salt by potassium mixed salt under the temperature of reaction condition and determines, the temperature of reaction that potassium magnesium mixed salt adds water conversion reaction operation is a normal temperature, and its amount of water all is converted into potash magnesium sulphate fertilizer by potassium magnesium mixed salt under the temperature of reaction condition and determines.
2, technology according to claim 1 is characterized in that two sections conversion fluids turn back to the potassium mixed salt and add in the water conversion reaction operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03157856 CN1197833C (en) | 2003-09-09 | 2003-09-09 | Process of producing potassium sulfate magnesium fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03157856 CN1197833C (en) | 2003-09-09 | 2003-09-09 | Process of producing potassium sulfate magnesium fertilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1482102A true CN1482102A (en) | 2004-03-17 |
| CN1197833C CN1197833C (en) | 2005-04-20 |
Family
ID=34157032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03157856 Expired - Lifetime CN1197833C (en) | 2003-09-09 | 2003-09-09 | Process of producing potassium sulfate magnesium fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1197833C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384786C (en) * | 2006-07-21 | 2008-04-30 | 中蓝连海设计研究院 | Process of preparing magnesium potassium fertilizer directly from bittern |
| CN104030318A (en) * | 2014-07-01 | 2014-09-10 | 陈兆华 | Methods for preparing potassium chloride and picromerite through carnallite |
| CN107324849A (en) * | 2017-08-31 | 2017-11-07 | 化工部长沙设计研究院 | A kind of method for preparing potash magnesium sulphate fertilizer |
| CN107382381A (en) * | 2017-08-31 | 2017-11-24 | 化工部长沙设计研究院 | A kind of production technology of high-quality potash magnesium sulphate fertilizer |
| CN107935637A (en) * | 2017-11-10 | 2018-04-20 | 国投新疆罗布泊钾盐有限责任公司 | A kind of method for producing top grade potassic-magnesian fertilizer |
-
2003
- 2003-09-09 CN CN 03157856 patent/CN1197833C/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384786C (en) * | 2006-07-21 | 2008-04-30 | 中蓝连海设计研究院 | Process of preparing magnesium potassium fertilizer directly from bittern |
| CN104030318A (en) * | 2014-07-01 | 2014-09-10 | 陈兆华 | Methods for preparing potassium chloride and picromerite through carnallite |
| CN104030318B (en) * | 2014-07-01 | 2016-11-09 | 陈兆华 | Method with light halogen potassium chloride made of stones and picromerite |
| CN107324849A (en) * | 2017-08-31 | 2017-11-07 | 化工部长沙设计研究院 | A kind of method for preparing potash magnesium sulphate fertilizer |
| CN107382381A (en) * | 2017-08-31 | 2017-11-24 | 化工部长沙设计研究院 | A kind of production technology of high-quality potash magnesium sulphate fertilizer |
| CN107324849B (en) * | 2017-08-31 | 2020-09-15 | 化工部长沙设计研究院 | Method for preparing potash magnesium sulphate fertilizer |
| CN107382381B (en) * | 2017-08-31 | 2020-09-15 | 化工部长沙设计研究院 | Production process of high-quality potassium magnesium sulfate fertilizer |
| CN107935637A (en) * | 2017-11-10 | 2018-04-20 | 国投新疆罗布泊钾盐有限责任公司 | A kind of method for producing top grade potassic-magnesian fertilizer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1197833C (en) | 2005-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3528767A (en) | Production of potassium chloride,potassium sulfate and sodium sulfate from brines and the like containing potassium,chloride and sulfate | |
| CN1274855C (en) | Method of combined extraction of magnesium and lithium in salt lake bittern | |
| CN103420401B (en) | Method for preparing large-particle picromerite | |
| CN106335910B (en) | A kind of preparation method of potassium sulfate and ammonium chloride | |
| CN104445124B (en) | A kind of hypergravity technology produces the method for potassium dihydrogen phosphate | |
| CN100532260C (en) | Vacuum crystallization technique for producing potassium nitrate from potassium chloride by sodium nitrate | |
| CN100503440C (en) | Process of preparing potassium sulfate with potassium containing bittern of magnesium sulfate subtype | |
| US3780160A (en) | Carbonation process for the manufacture of sodium bicarbonate | |
| CN104016390A (en) | Method for separating potassium oxide from potassium-containing sodium aluminate solution | |
| JP4555227B2 (en) | Simultaneous recovery of edible salt enriched with potassium chloride and KCl | |
| CN107986299A (en) | The method that saltcake liquid phase round-robin method prepares soda ash and caustic soda | |
| CN1197833C (en) | Process of producing potassium sulfate magnesium fertilizer | |
| CN102674405B (en) | Method for preparing potassium sulfate by using picromerite | |
| CN113751190A (en) | Method and system for preparing potassium chloride from carnallite raw ore | |
| CN111362731B (en) | Potassium magnesium sulfate fertilizer, potassium chloride and preparation method of potassium sulfate | |
| CN105668594A (en) | Process using polyhalite extraction mother liquor to produce potassium sulfate | |
| CN1195710C (en) | Method of producing potassium sulfate magnesium fertilizer | |
| JPS61275110A (en) | Manufacture of metallic sulfate by ion exchange | |
| CN212757306U (en) | Crystallizer system | |
| CN1020272C (en) | Preparation method of magnesium sulphate and sodium chloride from high temp. salt | |
| CN1281496C (en) | Floatation process of preparing potassium sulfate | |
| CN105366698B (en) | A kind of preparation method of Magnesium sulfate heptahydrate | |
| CN103253685A (en) | Method for producing industrial potassium chloride through hot melting crystallization of underground embedded solid potassium salt mine | |
| CN1522961A (en) | Process for preparing calcined soda by trona containing abundant sodium bicarbonate | |
| US20030113253A1 (en) | Method of producing potassium sulfate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171215 Address after: 816099 Building No. 24, Golmud City, Qinghai Province, No. 1 Patentee after: QINGHAI ZHONGXIN GUOAN LITHIUM DEVELOPMENT CO.,LTD. Address before: 816000 Qaidam West Road, Golmud, Qinghai Province, No. 16 Patentee before: QINGHAI CITIC GUOAN SCIENCE AN |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20050420 |