СПОСОБ ПЕРЕРАБОТКИ СОЛЕВЫХ ОТХОДОВ МАГНИЕВОГО ПРОИЗВОДСТВА

摘要

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