Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1975-06-02
1976-08-24
Halper, Robert
Classifying, separating, and assorting solids
Fluid suspension
Liquid
B03C 102
Patent
active
039765652
ABSTRACT:
A froth flotation method for the recovery of copper, nickel, cobalt, oxide, silicate, sulfide, arsenide, and antimonide minerals from their ores over iron sulfides, silica and silicates, as well as for the recovery of silicate minerals of lithium, sodium, potassium, and caesium over silica and feromagnesian silicates, and for the recovery of potassium halides and sulfates, strontium, and barium sulfates and carbonates, which comprises; subjecting the comminuted ore of aforesaid metals and minerals to froth flotation process in the presence of nitrous acid and an effective amount of a combination of quaternary ammonium nitrite and ternary phosphine dinitrite, or a combination of aforesaid quaternary ammonium nitrite or ternary phosphine dinitrite, and potassium, sodium, or ammonium nitrite, calcium, strontium, barium, or iron dinitrite; the indicated compounds provide selectivity and recovery of aforesaid metal and mineral value.
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