| 摘要 |
FIELD: extraction of precious metals such as platinum, palladium, gold etc from various kinds of mineral raw materials containing alkaline chlorides and alkaline-earth metal chlorides, such as composite concentrate produced from clay-salt wastes (slimes) of potassium production, marking clays etc. ^ SUBSTANCE: method involves providing chlorinating calcinations of concentrate having chloride content of 7-13%; leaching out cinder by diluted solution of aqua regia and carrying-out sorption of precious metals from pulp; performing chlorinating calcinations at temperature of 600-700 C. Method enables complex extraction of platinum group metals, gold and silver from mineral raw materials containing chlorides of alkaline and alkaline-earth elements. ^ EFFECT: increased efficiency and reduced production costs due to employment of chlorinating agent and owing to reduced number of operations. ^ 2 cl, 3 tbl |
