FIELD: non-ferrous metallurgy, namely processing of solid waste salt material formed at electrolysis process to commercial products.
SUBSTANCE: method comprises steps of grinding salt rejects material; leaching them by means of concentrated solution of potassium chloride; separating mother liquor and solid potassium chloride; washing potassium chloride and drying potassium chloride; before washing procedure, dissolving solid potassium chloride in water at temperature 70 - 90°C; filtering solution and cooling filtrate till temperature 10 - 25°C; filtering received suspension of potassium chloride; washing deposit by means of potassium chloride solution with concentration 300 - 350 g/dm3 and filtering it; returning prepared filtrate for leaching salt rejects material.
EFFECT: possibility for producing high-quality potassium chloride from salt rejects of magnesium production and therefore lowered quality of waste materials.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| MAGNESIUM PRODUCTION WASTE PROCESSING METHOD | 2004 |
|
RU2258753C1 |
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| METHOD OF INTEGRATED PROCESSING OF POLYMETALLIC PRODUCTION WASTES AND RENDERING THEM HARMLESS | 2001 |
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| METHOD OF EXTRACTING HAFNIUM AND ZIRCONIUM FROM FLUORIDE SECONDARY MATERIAL CONTAINING HAFNIUM AND ZIRCONIUM | 2020 |
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