| A high Fe rich Au-Cu-S polymetallic ore consists of 31.81% of Fe, 1.37 g/t of Au, 0.70% of Cu and 6.52% of S. 71.83% of gold in the mineral is deposited in copper minerals, pyrite and magnetite. The grains of copper minerals, pyrite and magnetite are relatively coarse, with a grain size of >0.04 mm. The ore sample was treated by a combined process of “selective flotation of copper - activated sulfur - sulfur tailing magnetic iron”, and ZA was used as copper collector. The resulted copper concentrate consisted of 27.80 g/t of Au and 20.60% of Cu, and the recovery was 59.05% and 83.29% for Cu and Au, respectively. The resulted sulfur concentrate grade was composed of 2.16 g/t of Au and 45.07% of S, and the recovery was 20.24% and 86.25% for Au and S, respectively. The iron concentrate included 0.80 g/t of Au and 60.83% of Fe., and the recovery was 14.25% and 45.90% for Au and Fe, respectively. The proposed method has high recovery for gold, copper, iron and sulfur in ores. |
