Zinc oxide minerals
Smithsonite ZnSO3, and containing Zn52%, available senior xanthate or fatty acid collector. Commonly used in industrial production sulfide sodium sulfide collectors xanthate or amine salt, hemimorphite 2Zn · SiO2 · H2O, containing Zn54% with xanthate flotation sulfide, or amine salt flotation, copper sulfate activation. Vulcanized suitable PH 6.9 to 9.2, heating hemimorphite flotation role. washing sand clean
Zinc oxide ore flotation method
Sulfide xanthate or amine flotation is currently used method.
(1) heat curing xanthate flotation. This method first ore off the mud. And then the slurry heated to 50 ~ 60 ° C, sulfide and sodium sulfide, and then senior xanthate and black drug flotation. At room temperature curing, the curing membrane is not solid, smallore processing plant poor floatation effect. Low temperature curing, easy to form a colloidal precipitate, on the contrary, curing the higher the temperature, the formation of sulfide film is also more solid, the precipitate formed in the pulp, the less, the faster cure rate. Sulfide concentration in the pulp, and also the vulcanization process factors. Slime in pulp, iron oxide, manganese oxide consumption of sodium sulfide, and reduce the quality of concentrate, and should therefore be pre-removal.
(2) after the first curing amine flotation. This method is suitable for the flotation of zinc carbonate, silicate and other oxide minerals of zinc. Amine flotation advantage is that no significant collector, quartz, alkaline earth metal carbonate in alkaline medium.new stone crusher In the use of amines to do the collecting agent, the remaining sodium sulfide is not only can not afford to inhibition, but activation of the zinc oxide minerals. Zinc oxide, the primary amine collector strong, especially the primary amine containing 12 to 18 carbon atoms, is particularly significant, while the secondary amines, tertiary amines collector is weak.