| 摘要 |
A froth flotation method for recovering native silver and copper, and metallic ores selected from the group of silver, copper, nickel, cobalt, and chromium, by applying commercial quaternary bases or their salts in conjunction with perchloric acid to obtain pure concentrates of said metal values, which comprises; adding to a water suspension of finely divided ore of quaternary ammonium type collectors of commercial origin, and an adequate amount of perchloric acid, which acting in conjunction activate and levitate in the froth by usual froth flotation process the metal values of silver, copper, nickel, cobalt, and chromium.
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