The application of lead-zinc ore must be beneficiated before it can be better utilized. The commonly used beneficiation method is flotation. Since it is flotation, flotation chemicals are naturally inseparable. The following is an introduction to the flotation reagents used in lead-zinc ores:
1. Lead and zinc flotation regulators: Regulators can be divided into inhibitors, activators, medium pH regulators, slime dispersants, coagulants and re-coagulants according to their role in the flotation process. Regulators include Various inorganic compounds (such as salts, bases and acids) and organic compounds. The same agent often plays different roles under different flotation conditions.
2. Lead and zinc flotation collectors. Commonly used collectors include: xanthate and black medicine. Xanthate class includes xanthate, xanthate esters, etc. Sulfur nitrogen class, such as ethyl sulfide, has a stronger collection capacity than xanthate. It has strong collection capacity of galena and chalcopyrite, and its pyrite collection capacity is calibrated. Weak, good selectivity, faster flotation speed, less useful than xanthate, and has a stronger capture ratio for coarse particles of sulfide ores. When used in the separation of copper-lead-sulfur ratio ores, it can obtain better than xanthate. Better sorting effect. Black medicine Black medicine is an effective collector of sulfide ores. Its collection ability is weaker than that of xanthate. The solubility product of dihydrocarbyl dithiophosphate of the same metal ion is larger than that of xanthate of the corresponding ion. Black medicine It has foaming properties. Commonly used black powders in industry include: No. 25 black powder, butylammonium black powder, amine black powder, and naphthenic black powder. Among them, butylammonium black powder (dibutyl ammonium dithiophosphate) is a white powder that is easily It is soluble in water, turns black after deliquescence, and has certain foaming properties. It is suitable for the flotation of sulfide ores such as copper, lead, zinc, and nickel.
In addition, cyanide can strongly inhibit sphalerite, and zinc sulfate, thiosulfate, etc. can inhibit the flotation of sphalerite.
Post time: Dec-18-2023
