| 摘要 |
FIELD: metallurgy, in particular, tin hydrometallurgy. SUBSTANCE: in the known technology the cake of pressure leaching is subjected to chloride leaching, the pulp of chloride leaching is filtered out; the cake of chloride leaching is classified by size with separation in drain of arsenic and iron, sands of the hydrocyclone are concentrated on the table with production of tin concentrate, and chloride leaching is conducted by hydrochloric acid and sodium chloride, concentration of hydrochloric acid and sodium chloride is 0.4 to 0.6 m/dmand 240 to 260 g/dm; chloride leaching is conducted at H: L= 1:3; chloride leaching is conducted at 85 to 95 C. EFFECT: enhanced extraction of tungsten, lead, bismuth and silver. 5 cl |
