Potassium magnesium fertilizer
US11021411B2 · kind B2 · utility
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29References
6Claims
0Family size
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Key dates
| Filing date | May 9, 2018 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | Aug 5, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01F5/40
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for producing a double sulfate of potassium and magnesium by dry mechanical attrition of potassium sulfate and magnesium sulfate hexahydrate, comprising obtaining potassium sulfate by sulfatation of potash to bisulfate of potassium and disproportionation of the bisulfate of potassium to potassium sulfate in a water-methanol solution, and obtaining magnesium sulfate hexahydrate by sonic-assisted partial sulfatation of calcined serpentinic silicate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.