【摘要】 <正> 锑矿石中常含有一定量的砷,所以辉锑矿与砷黄铁矿的分离,是锑矿浮选过程中需要解决的问题。 锑与砷许多性质相近,但辉锑矿（Sb₂S₃）与砷黄铁矿（FeAsS）的矿物结晶构造更多还原

【Abstract】 In this paper, three ways of selected flotation of antimonite and arsenopyritewere given, they are: (1) selected collectors (such as dibutyl dithiophosphate ammonium, diethyl dithiocarbamate sodium and diethyl aminoethyl dithiocarbonate sodium etc.) method, (2) flotation method in alkaline medium and (3) oxidation-flotation method. The satisfactory results of flotation of sulfide antimony ore contented arsenic with both selected collectors and alkaline medium methods were obtained.According to experimental results, the two type reactions of dissolution, dissociation and hydration of antimonitc in aq. solution at differential pH values were given and then, the thermodynamic calculation and diagram conformed to these experimental results. From this, the two types of double layer models and their determine potential ions of antimonite surface were determined and the flotation phenomena can be explained. The study also showed that the main product of reaction between antimonite and xanthate may be adsorption in antimony xanthate form, but present dixanthogen too; the main product of reaction on arsenopyrite may be dixanthogen and the adsorption sect of xanthate form was observed too.更多还原