CN1128103C - Process for preparing potassium sulfate - Google Patents
Process for preparing potassium sulfate Download PDFInfo
- Publication number
- CN1128103C CN1128103C CN00113275A CN00113275A CN1128103C CN 1128103 C CN1128103 C CN 1128103C CN 00113275 A CN00113275 A CN 00113275A CN 00113275 A CN00113275 A CN 00113275A CN 1128103 C CN1128103 C CN 1128103C
- Authority
- CN
- China
- Prior art keywords
- potassium sulfate
- potassium
- glauconite
- raw materials
- present
- 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.)
- Expired - Fee Related
Links
- 229910052939 potassium sulfate Inorganic materials 0.000 title claims abstract description 23
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 title claims abstract description 20
- 235000011151 potassium sulphates Nutrition 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 229910052631 glauconite Inorganic materials 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 7
- 238000002386 leaching Methods 0.000 claims abstract description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract description 6
- 239000011591 potassium Substances 0.000 abstract description 6
- 229910052700 potassium Inorganic materials 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000001354 calcination Methods 0.000 abstract description 2
- 238000002425 crystallisation Methods 0.000 abstract description 2
- 230000008025 crystallization Effects 0.000 abstract description 2
- 230000008020 evaporation Effects 0.000 abstract description 2
- 238000001704 evaporation Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical group [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The present invention discloses a production method for potassium sulfate, particularly a production method for preparing potassium sulfate by taking glauconite and potassium ore of the same type as raw materials. The present invention adopts glauconite and potassium ore of the same type as raw materials and obtains finished potassium sulfate by calcination, acid leaching, separation, evaporation and crystallization. The present invention has the advantages of easy obtainment of raw materials, simple production technology, little equipment corrosion, low preparation cost of potassium sulfate, etc.
Description
The present invention relates to a method for preparing potassium sulfate, particularly to a method for preparing potassium sulfate by using glauconite and similar potassium ores.
Potassium sulfate is known as an important chlorine-free potash fertilizer suitable for application to chlorine-repellent crops such as tobacco, fruit trees and sugar crops. As few original ores are found in the world, potassium sulfate is generally produced by using potassium chloride as a raw material at present, the process is complex, equipment is seriously corroded, and the manufacturing cost is high.
The present invention aims at utilizing glauconite and similar potassium ore as material and adopting sulfuric acid leaching process to produce potassium sulfate and side product iron oxide red. Meanwhile, the process flow is shortened, the equipment corrosion is reduced, the manufacturing cost is reduced, and the requirement of the market on potassium sulfate is met.
The invention is realized by the following modes:
it uses glauconite and its similar potassium ore as raw material, glauconite is ore of marine phase origin, its main component is K2O：8～9％；Fe2O3：4.2％；Al2O3：15.02％；SiO2: 65.35 percent. Crushing and roasting the raw materials at 500-750 ℃, and then adding 20-30% sulfuric acid for acid leaching reaction to convert potassium oxide in the raw materials into potassium sulfate, and simultaneously, dissolving out Fe in the raw materials by the sulfuric acid to convert the Fe into FeSO4Into solution. The chemical reaction formula is as follows:
K2SO4and FeSO4After adjusting the proper pH value, FeSO4Conversion to Fe (OH)3Due to Fe (OH)3Is a precipitate, thus being reacted with K2SO4Separating the solution, calcining the precipitate to obtain iron oxide red product, and separating the iron compound containing K2SO4The solution is evaporated and crystallized to become potassium sulfate.
The present invention uses natural glauconite and similar potassium ore as raw material, so that it has the advantages of easily available raw material, simple technological process, less corrosion to equipment, low potassium sulfate producing cost, etc.
Example 1: 1000 g of glauconite is taken as a raw material, crushed and roasted at the temperature of 600 ℃, the roasted mineral material is 900 g, 500 g of 30% dilute sulfuric acid is used for acid leaching to obtain 1400 g of acid solution, separation is carried out after acid leaching, the separated liquid is 1050 g, 280 g of crude potassium sulfate is obtained after discharging silicon-aluminum slag, and 200 g of finished potassium sulfate is obtained after evaporation and crystallization.
Claims (2)
1. A method for producing potassium sulfate, characterized by comprising: the production method comprises the steps of roasting the glauconite as a raw material at the roasting temperature of 500-750 ℃, then carrying out acid leaching, and separating and crystallizing the leachate to obtain the potassium sulfate.
2. The method for producing potassium sulfate according to claim 1, characterized in that: and carrying out acid leaching reaction on the raw material by adopting a 20-30% sulfuric acid solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00113275A CN1128103C (en) | 2000-02-15 | 2000-02-15 | Process for preparing potassium sulfate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00113275A CN1128103C (en) | 2000-02-15 | 2000-02-15 | Process for preparing potassium sulfate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1309086A CN1309086A (en) | 2001-08-22 |
| CN1128103C true CN1128103C (en) | 2003-11-19 |
Family
ID=4583075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00113275A Expired - Fee Related CN1128103C (en) | 2000-02-15 | 2000-02-15 | Process for preparing potassium sulfate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1128103C (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1127220A (en) * | 1995-08-01 | 1996-07-24 | 化学工业部长沙化学矿山设计研究院 | One-step process for preparing potassium sulfate |
| CN1138567A (en) * | 1996-03-19 | 1996-12-25 | 化学工业部长沙化学矿山设计研究院 | Wet decomposition process of potash feldspar ore |
-
2000
- 2000-02-15 CN CN00113275A patent/CN1128103C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1127220A (en) * | 1995-08-01 | 1996-07-24 | 化学工业部长沙化学矿山设计研究院 | One-step process for preparing potassium sulfate |
| CN1138567A (en) * | 1996-03-19 | 1996-12-25 | 化学工业部长沙化学矿山设计研究院 | Wet decomposition process of potash feldspar ore |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1309086A (en) | 2001-08-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Beijing city Haidian District indigo plant (three Century City) Chuihong Park Building 3 7I zip code: 100097 Patentee after: Pei Jing Address before: Hunan province Yueyang Dongting Nitrogenous Fertilizer Plant retreat office: 414003 Patentee before: Pei Jing |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031119 Termination date: 20120215 |