Experimental study on comprehensive recovery of cyanide tailings
The gold grade of cyanide tailings from a gold mine in Liaoning is 2.01 g/t,with a silver grade of 36.23 g/t,copper grade of 0.33%,lead grade of 1.91%,and zinc grade of 3.01%.Copper-lead-zinc mixed flo-tation tests and tests on preferential separation of lead-zinc flotation from the tailings were conducted on the cyanide tailings.The copper-lead-zinc mixed flotation test yielded a mixed concentrate with gold grade of 13.72 g/t,silver grade of 281.70 g/t,copper grade of 3.63%,lead grade of 16.01%,and zinc grade of 36.92%.The recovery rates for gold,silver,copper,lead,and zinc were 50.09%,57.22%,80.69%,61.33%,and 90.88%,respectively.The process of preferential separation of lead-zinc flotation from the tailings produced a lead concentrate with a grade of 48.95%and a recovery rate of 52.29%,and a zinc concentrate with a grade of 43.21%and a recovery rate of 89.45%.In the lead concentrate,the gold grade,silver grade,and copper grade,were 54.02 g/t,891.42 g/t,5.92%,respectively.In the zinc concentrate,the gold grade,silver grade,and copper grade,were 2.43 g/t,134.79 g/t,and 2.19%,respectively.The total recovery rates for gold,silver,and copper were 62.39%,73.43%,and 77.76%,respectively.The separation indices were favorable,providing a reference basis for the comprehensive utilization of similar cyanide tailings resources.
万方数据
维普
