Based on the chemical analysis data, Beiya Gold multi-metal Ore contains Au 2.17 g/t, Ag 59.36 g/t, Fe 38.51%, Cu 0.57%, Pb 2.00%, and Zn 0.48%. Chemical phase analysis shows that 95.72% Au exists as nature gold; 67.22% Fe exists as limonite and hematite, and only 23.65% exists as magnetite; 26.41% Cu exists as malachite and only 12.14% exists as sulfide minerals such as chalcopyrite and covellite; in the same way only 3.98% Pb exists as galena and 26.09% Zn exists as sphalerite. So the

more »

... process mineralogy study is very necessary to guarantee separating these valuable elements from the ore reasonably and economically. Based on the process mineralogy research, reasonable technology flowsheet is worked out: the ore is ground to 90% under 0.074mm, leaching Au firstly, then enriching Fe by low-intensity and high-magnetic separation. The Cu, Ag, Pb and Zn in the ore are unavailable now.