Experimental Study on Flotation of Fluorite from Fine Particle Iron Tailings
A small amount of fluorite is contained in the fine mud of a certain iron tailings.Based on process mineralogy analysis,this paper proposes a fluorite magnetic separation combined flotation process,which effectively recovers low-grade fluorite from fine-grained iron tailings.The results show that the iron tailings contain-0.038 mm proportion of 76.97%,can be removed 42.89%of magnetic gangue minerals through magnetic separation with magnetic field of 636.8 kA/m,increasing the CaF2 grade from 13.91%to 21.04%.Using sodium carbonate as adjusting agent,acidified water glass as inhibitor,and modified oleic acid as collector,fluorite concentrate product with a yield of 7.81%,CaF2 grade of 90.72%,and CaF2 recovery of 50.94%is finally obtained.
fine particleiron tailingsfluoritemagnetic separationflotationconcentrate
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