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US 4,362,615 AGranted
Froth flotation of rutile
AssigneeThe United States of America as represented by the Secretary of the Interior
InventorsThomas O. Llewellyn, Gerald V. Sullivan
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Abstract
Rutile is recovered from copper ore tailings by means of a froth flotation process comprising: (a) flotation of sulfides and carbonates at a pH of about 9 to 10, using sodium isopropyl xanthate and sodium oleate as collectors, and detrine as rutile depressant, and (b) flotation of rutile from the resulting tailings at a pH of about 2 to 3, using hydrofluoric acid as a rutile selectivity-assisting agent and water-soluble petroleum sulfonate as rutile collector.
Claims7
A froth flotation process for recovery of rutile from copper ore tailings comprising:
- (a) flotation of sulfides and carbonates at a pH of about 9 to 10, using sodium isopropyl xanthate and sodium oleate as collectors, and dextrin as rutile depressant, and
- (b) flotation of rutile from the tailings of step (a) at a pH of about 2 to 3, using hydrofluoric acid as a rutile selectivity-assisting agent and water-soluble petroleum sulfonate as rutile collector.
Dependencies are inferred from the claim text.