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Beneficiation Method for Gold Ore

     

The beneficiation method for gold ore comprises the following steps: classify gold-bearing minerals to obtain a coarse fraction and a fine fraction; sequentially subject the coarse fraction to sluice rougher separation and shaking table cleaning separation to obtain Concentrate A; process the fine fraction via flotation to obtain Concentrate B, and mix Concentrate A and Concentrate B to produce gold concentrate.

The collector used in the flotation process consists of the following components in parts by mass: 25-35 parts of mercaptobenzothiazole, 5-10 parts of ammonium dibutyl dithiophosphate, 3-5 parts of soluble alkali, 0.3-1 part of fatty alcohol polyoxyethylene ether, and 55-60 parts of solvent.

By adopting the gravity-flotation combined process flow for ore treatment, this method recovers coarse-grained gold through gravity separation, and recovers fine-grained and micro-fine-grained gold through flotation. It effectively addresses the difficulties in beneficiation and recovery of gold with different grain sizes (coarse, fine and micro-fine), realizes highly efficient recovery of gold minerals, and delivers a relatively high gold recovery rate.

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