ES341289A1 - Method for the manufacture of potassic sulphate. (Machine-translation by Google Translate, not legally binding) - Google Patents
Method for the manufacture of potassic sulphate. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES341289A1 ES341289A1 ES341289A ES341289A ES341289A1 ES 341289 A1 ES341289 A1 ES 341289A1 ES 341289 A ES341289 A ES 341289A ES 341289 A ES341289 A ES 341289A ES 341289 A1 ES341289 A1 ES 341289A1
- Authority
- ES
- Spain
- Prior art keywords
- stage
- brine
- langbeinite
- obtaining
- consequent
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/06—Preparation of sulfates by double decomposition
- C01D5/10—Preparation of sulfates by double decomposition with sulfates of magnesium, calcium, strontium, or barium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/40—Magnesium sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Fodder In General (AREA)
Abstract
Method for manufacturing potassium sulfate, starting from crude kainite, characterized in that it comprises the following stages: 1) the crushed crude mineral is leached at a temperature higher than 90ºC by means of a recirculating epsomite brine from stage 3, with the consequent obtaining of a langbeinite slurry, composed of a solid phase containing langbeinite and sodium chloride, as well as a langbeinite brine; 2) the langbeinite slurry undergoes a classification process with the consequent separation of most of its sodium chloride; 3) a first part of the classified langbeinite slurry is refrigerated at a temperature between 35ºC and 20ºC in the presence of a scoenite brine, from step 7, with the consequent obtaining of a solid phase, composed of a mixture comprising KC1, NaC1, MgSO4.6H20 and/or MgSO4.7H2O and an epsomite brine; 4) the magnesium sulfate is separated from the chloride by sieving or sorting while the epsomite brine is partially sent to stage 6 and partially recirculated to stage 1, the magnesium sulfate being partially sent to stage 6 and being partially removed of the cycle; 5) potassium chloride is separated from sodium chloride by means of a flotation operation; 6) the second part of the langbeinite slurry is treated at a temperature higher than 802C with a part of the epsomite brine obtained in stage 4 and a part of the magnesium sulfate obtained in stage 4, with the consequent obtaining of a phase solid composed of langbeinite that is sent to stage 7 and obtaining metastable langbeinite brine, which is sent to the discharge; 7) the langbeinite obtained in stage 6 is treated, at a temperature between 35 and 20ºC, with a sulfate brine obtained in stage 8, with the consequent obtaining of a solid phase, composed of scoenite (or leonite) and potassium chloride, as well as with the obtaining of eschoenite brine that is recirculated to stage 3; 8) Schoenite and potassium chloride, obtained in stage 7, are allowed to react with potassium chloride obtained in stage 5, in the presence of water, with the consequent obtaining of potassium sulfate and a sulfate brine, which is finally recirculated to stage 7. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT1134566 | 1966-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES341289A1 true ES341289A1 (en) | 1968-07-16 |
Family
ID=11135087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES341289A Expired ES341289A1 (en) | 1966-05-18 | 1967-05-18 | Method for the manufacture of potassic sulphate. (Machine-translation by Google Translate, not legally binding) |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1592035A1 (en) |
| ES (1) | ES341289A1 (en) |
| SU (1) | SU426359A3 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10399861B2 (en) | 2015-05-08 | 2019-09-03 | Yara Dallol Bv | Methods for the production of potassium sulphate from potassium-containing ores at high ambient temperatures |
| CN109415218A (en) | 2016-06-24 | 2019-03-01 | 雅拉达洛尔有限公司 | The method that rock salt is reduced in potassium sulfate is prepared from phosphate-containing ore at a high ambient temperature |
| BR112020007199A2 (en) | 2017-10-13 | 2020-10-13 | Novopro Projects Inc. | potassium sulphate production systems and methods |
-
1967
- 1967-05-17 DE DE19671592035 patent/DE1592035A1/en active Pending
- 1967-05-17 SU SU1156650A patent/SU426359A3/en active
- 1967-05-18 ES ES341289A patent/ES341289A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1592035A1 (en) | 1970-10-15 |
| SU426359A3 (en) | 1974-04-30 |
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