Copper cobalt nickel separation process example
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Copper-nickel sulfide ore processing, generally beneficiation, smelting and converting nickel matte obtained, and then use the flotation separation of nickel copper, copper, nickel concentrate smelting then outputs were sent to the metal of copper and nickel, in the smelting process comprehensive recovery of cobalt and platinum group elements, process flow of a copper-nickel sulfide ore are as follows: see flowchart:
The higher-quality copper-nickel ore can be sent directly to smelting to obtain high-ice nickel, and only the poor copper-nickel ore is beneficiated. The high-ice nickel obtained by smelting of copper-nickel mixed concentrate obtained by flotation has smelting method, water smelting method and flotation method, and flotation method is one of the more economical and effective methods. The high ice nickel is separated by flotation. The phase composition of the high-ice nickel of the plant is nickel sulfide (Ni 3 S 2 ), copper sulfide [(Cu 2 S 2 ) 2 FeS+Cu 2 S], alloy (Cu-Ni-Fe), metallic copper (Cu), and small amounts of iron ore magnetic (Fe 3 O 4) and a residue. Among them, the content of nickel sulfide and copper sulfide accounts for more than 90%. Therefore, the key to the separation of copper and nickel is the separation of nickel sulfide and copper sulfide. After the high-nickel nickel is ground, the particles of the copper-nickel sulfide are dissociated from each other, and in a strong alkaline solution (pH 12 to 12.5), the butyl xanthate is added for flotation. At this time, the nickel sulfide is suppressed, and the copper sulfide floats up to achieve the purpose of separation. The successful application of this new process has enabled China's copper-nickel separation technology to reach the international advanced level.