Process for preparing potassium chloride from alkali dregs and rock containing potassium
A method of preparing potassium chloride by using soda sludge and potassium-contained rock as raw materials is characterized by that the ratio of potassium-contained rock to soda sludge is 1:0.2-5, it may also be added with bittern, and its weight is 0-80% of that of potassium-contained rock. The pr...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A method of preparing potassium chloride by using soda sludge and potassium-contained rock as raw materials is characterized by that the ratio of potassium-contained rock to soda sludge is 1:0.2-5, it may also be added with bittern, and its weight is 0-80% of that of potassium-contained rock. The process includes the following procedures: preparing row material paste, oven-drying, calcining, and leaching to extract potassium chloride, sodium chloride and calcium chloride from the leaching liquid. The leaching residue after washing and press filtering can produce several kinds of product. |
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