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for a zinc extraction plant in tibet, there are much slime in the raw ore. according to the zinc ore characteristics, xinhai adopted pre-desliming, zinc sulfide flotation and zinc oxide flotation process. finally, the production indexes were stable and the recovery rate of zinc reached 69.56%.the best concentration method for zinc ore is froth flotation. procedure of zinc extraction. the concentration of ore: froth flotation. first of all, the ores are crushed into very fine powder-sized particles and are mixed with water. the mixture obtained is called slurry. collector is used which will act as a surfactant and a chemical is