METHOD OF EXTRACTION OF SULFIDES FROM TUNGSTEN-CONTAINING ORES Russian patent published in 1995 - IPC

FIELD: mineral concentration. SUBSTANCE: offered for the first time in sulfide cycle introduction of (benz-1,3-thiazolyl-2)methylsulfoacetic acid as nitrogen-containing reagent at the stage of conditioning of pulp treated with modifiers before introduction of sulthydryl collector. EFFECT: higher selectivity in separation of sulfide and tungsten-containing minerals with simultaneous reduction of losses of tungsten trioxide with collective sulfide product. 2 cl, 2 tbl