Comprehensive Beneficiation Method Of Associated Minerals In Copper Mines

Associated lead-zinc deposits mainly occur in skarn, pyrite, and sandstone copper deposits. The ore-dressing processes of the three recovered deposits are quite different. Skarn or sandstone copper deposits are usually associated with two minerals, processing lead sulfide and zinc sulfide, and flotation is the main method of choice. In the selection process, you can consider the copper-lead-zinc priority flotation process, copper-lead mixed separation-tailings zinc flotation process, and copper-lead-zinc mixed flotation-copper-lead-zinc separation process, such as flotation – asynchronous mixing of copper, lead, zinc and sulfur – copper, lead, zinc and sulfur separation process, etc.

Massive copper sulfide deposits of volcanic origin usually contain associated zinc, mainly sphalerite or sphalerite, and these deposits contain significant amounts of pyrite or magnetic pyrite. It is easily oxidized during the mining, crushing and grinding processes, and the oxidized surface will seriously affect the flotation speed of copper, zinc and sulfur minerals. In addition, some metal cations in the ore will activate zinc-sulfur minerals and affect the recovery of copper and zinc minerals. Therefore, these ores’ beneficiation process and chemical system are relatively complex, including pretreatment priority flotation, copper-zinc mixed flotation and re-separation, two-stage flotation method, etc.