Abstract:

In order to improve the resource utilization rate of copper and associated sulfur and iron in a

low-grade copper sulfide polymetallic ore in Guangdong，a systematic process mineralogy study is carried

out by means of chemical multi-element analysis and mineral automatic analyzer. The results show that the

contents of Cu，S and Fe in the ore are 0.50%，27.68% and 34.07%，respectively. Chalcopyrite is the main

occurrence mineral of copper，and other copper-bearing minerals include covellite，chalcocite，etc. Aiming

at the problems of difficult separation of copper and sulfur，a process of semi-autogenous grinding-ball mill⁃

ing-copper flotation-pyrrhotite magnetic separation-sulfur flotation is proposed. Indexesof copper concen⁃

trate with copper grade of 16% and recovery of 70%，the sulfur grade of pyrrhotite concentrateafter magnetic

separation is 30%，the recovery rate is 36%，and the sulfur grade of sulfur concentrate is 40%，the recovery

rate is 45% can be obtained.Good separation effect of copper and sulfur is obtained.

Key words:

low grade copper sulfide ore, process mineralogy, covellite, chalcopyrite