METHOD OF CONCENTRATION OF ORES

摘要

The method of separate floatation dressing comprises (a) abrading the ore containing arsenic sulfide and pyrite for the liberation, (b) maintaining the mineral solution in the pH range of 10-11 with portland cement as an inhibitor for arsenic sulfide, (c) floating pyrite by adding a collecting agent and a bubbling agent to the solution, and (d) dressing the high grade arsenic sulfide through refining two or three times.