On the Processing Tests of Some Refractory Gold Ores

Through the flotation test study on refractory gold ores of micro-fine grained arsenic containing,the reasonable technological flowsheet and reagent conditions of flotation were elicited.Using the combined processing technology of fining grinding followed by enhancing flotation,cyanide leaching of gold from tailings,the gold concentrate grade 55.89 g/t with recovery of 70.08 % in the open-circuit test of the laboratory were obtained.The leaching rate from tailings is 91.5 %.The comprehensive recovery rate of Au is 90.4 % by the combined processing technology.