Study on Optimization of Beneficiation Process of a Lean and Fine Copper Sulfide ore in Yunnan
The copper and sulfur grades of a low-grade fine-grained dissemination copper ore in Yunnan are 0.161%and 9.704%,respectively.The dissemination size of valuable copper minerals is fine,and the separation and enrichment of copper and sulfur is difficult.In order to realize the efficient development and utilization of the copper sulfide ore resources,a system-atic grinding and flotation test was carried out on the basis of the ore dressing plant original beneficiation process and the raw ore process mineralogy study.The results show that the copper concentrate with copper grade of 14.69%and copper recovery of 63.15%,the sulfur concentrate with sulfur grade of 29.16%and sulfur recovery of 75.10%can be obtained by the closed-cir-cuit process of grinding-1 roughing 2 scavenging copper sulfur mixed floatation-regrinding of mixed flotation coarse concentrate-1 roughing 3 cleaning 2 scavenging copper sulfur separation flotation.The grade of copper concentrate in the test is nearly 3 percentage points higher than that in the field,and the copper recovery rate is increased by more than 15 percentage points,which is significantly better than the field production index,and the ideal comprehensive recovery of copper and sulfur is a-chieved.The research results can be used as the basis for process optimization.
high sulfur lean fine copper sulfide orecopper sulfur mixed flotationregrinding of mixed concentratecopper sulfur separation flotation
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