Flotation Machine is mainly used to select non-ferrous […]
Flotation Machine is mainly used to select non-ferrous metals such as copper, zinc, lead, nickel and gold. It can also be used for rough selection and selection of ferrous and non-metal.
Lead and zinc are one of the earlier metals that humans extracted from lead-zinc ore. Lead and zinc are widely used in the electrical industry, machinery industry, military industry, metallurgical industry, chemical industry, light industry and pharmaceutical industry. In addition, lead metal has many uses in the nuclear industry, petroleum industry and other sectors.
There are 11 kinds of lead industrial minerals in lead-zinc ore and 6 kinds of zinc industrial minerals, with galena and sphalerite being the most important. The chemical formula of galena is PbS, the crystal structure is equiaxed, the sulfur ions form the closest packing, and the lead ions are filled in all the octahedral spaces. The surface of the fresh galena is hydrophobic, and the unoxidized galena is easily floated, and the surface is oxidized and floatable.
Xanthate or black medicine is a typical collector of galena. The yellow medicine is chemically adsorbed on the surface of galena. Baiyao and ethyl sulphide are also commonly used collectors. Take effect. Dichromate is a potent inhibitor of galena, but its inhibitory effect on galena activated by Cu2+ is reduced. Galena, which has been inhibited by dichromate, is difficult to activate and can be activated by treatment with hydrochloric acid or in an acidic medium with sodium chloride. Cyanide can not inhibit its flotation, sodium sulfide is very sensitive to the floatability of the lead ore. Excessive sulfur ions can inhibit the flotation of galena; sulfur dioxide, sulfurous acid and its salts, lime, zinc sulfate or Other agents can inhibit the flotation of galena.