Process Development for Gold Concentrate Recovery by Multi-stage Flotation using Optimized Conditions

A pre-treatment method for upgrading gold from a polymetallic gold-zinc-lead ore by flotation was studied. X-ray diffraction analysis of the sulfide showed that quartz, calcite, pyrite, sphalerite, and galena are main constituents ore. The composition contained 6.49 ppm Au, 3.48% Zn, 1.25% Pb, 17.98% Fe, 20.36% S. Due to complexity ore, recovery is generally low. objective this study develop primary process recover in bulk concentrate. effects particle size, collector type, time, slurry pH on recoveries grades gold, zinc, lead were investigated. developed consisted rougher, scavenger, cleaner stages. High found be linked with high Pb which achieved utilization mixture AERO 7249 PAX. kinetics fast more than 50% recovered within 5 minutes flotation. Under optimized conditions stages, total 88.36 % final grade 60.97 obtained. enrichment ratio 9.4 achieved, confirming viability prior further processing.