International Journal of Mineral Processing, Vol.146, 10-14, 2016
Flotation experimental research of calcareous-siliceous phosphorite
Based on the analysis of occurrence states and properties of a calcareous-siliceous phosphorite, the effects of GZ(1) collector dosage, regulator dosage, pulp density and particles size distribution of sample on concentrate indexes were investigated by reverse flotation technology. The rare earth oxidize (REO) grade and recovery of concentrate were also analyzed in the work. Two-stage reverse flotation technology was applied for the beneficiation of a calcareous-siliceous phosphorite. Under the integrated optimal single factor conditions of GZ(1) collector 0.9 kg/t, phosphate regulator 14 kg/t and pulp density 35 wt.%, mass fraction of particles size of -74 mu m of 85 wt.%, flotation time of 11 mm and flotation pH of 5.5, the P2O5 grade increases from 14.64 wt% in raw ore to 26.82 wt.% in the concentrate, and the recovery is 72.09 wt.%, while REO grade increases from 0.08 wt.% in the raw ore to 0.175 wt.% in the concentrate, and the recovery is 86.08 wt%. (C) 2015 Elsevier B.V. All rights reserved