Experimental Study on Beneficiation Technology of a Low Grade Phosphate Ore in Jinning,Yunnan
A low-grade collophanite ore from Jinning,Yunnan Province belongs to mixed phosphate rock,with a w(P2O5)grade of 18.45%,w(MgO)2.39%,and w(SiO2)35.88%.Under normal temperature conditions,when the grinding fineness of-0.074mm accounts for 97.18%,the ore is separated by using the "forward-reverse flotation process",and the concentrate indexes of w(P2O5)28.51%,w(MgO)0.95%,w(SiO2)19.70%,and w(P2O5)recovery of 81.70% are obtained through closed-circuit experiments.The effective sorting of the mine has been realized.
Low gradePhosphate orePositive and reverse flotation beneficiationExperimental study