Experimental Study on the Flotation Technology of Intricate Cu-Pb-Zn Sulphide Ore

The mineralogy study of an intricate Cu-Pb-Zn sulphide ore shows that Cu,Pb and Zn minerals intergrew intimately,and were oxidized to different extents,which made them quite difficult to be separated.A flowsheet consists of Cu-Pb buck flotation,Cu-Pb separation,Zn flotation from tailings of Cu-Pb flotation was introduced,and for a run-of-mine ore with a Cu grade of 0.52%,Pb grade of 1.50% and Zn grade of 1.05%,Cu concentrate with Cu grade and recovery of 21.87% and 67.58%,Pb concentrate with Pb grade and recovery of 43.29% and 72.04%,Zn concentrate with Zn grade and recovery of 42.26% and 66.89%,respectively,were produced,and the comprehensive recovery of Cu,Pb,Zn minerals can thus be achieved.