Collecting agent for sorting zinc oxide ore and preparation method thereof

The invention discloses a collecting agent for sorting zinc oxide ore. The collecting agent is mainly prepared by the following raw materials in parts by weight: 50 to 100 parts of isobutanol, 50 to 120 parts of sodium hydroxide, 60 to 120 parts of carbon disulfide, 10 to 200 parts of 1-amino-n-heptane, 50 to 100 parts of glycerol, 50 to 120 parts of salicylhydroxamic acid, 10 to 30 parts of sodium carbonate, 20 to 100 parts of sodium sulfide, 50 to 150 parts of water glass solution and 10 to 40 parts of kerosene. In addition, the invention also discloses a preparation method of the collecting agent. The collecting agent has collecting performance for both zinc sulfide and zinc oxide, the zinc sulfide and the zinc oxide can be simultaneously sorted, the process of sorting the zinc oxide after the zinc sulfide is sorted is not needed, the collecting agent is high in selectivity, the ore sorting process is simple in flow, the cost is low, the grade of the zinc concentrate obtained in a floatation manner is greater than 35%, and the grade and the recovery rate are obviously higher than those of conventional chemicals.