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本文以酸化硅酸钠和酸化硅酸钠加铁盐作为分散剂,对常见脉石矿物石英的微细颗粒在PH为10.5的碳酸钠溶液中的分散稳定性进行了试验研究,发现上述两种分散剂都比单独硅酸钠本身的分散作用强,浮选精矿的品位高;认为其作用机理是在实验条件下所形成的亲水性胶体对细粒石英的分散起了保护胶体的作用。细粒脉石矿物的稳定分散,有利于赤铁矿矿石阴离子捕收剂的浮选。
In this paper, sodium silicate and acidified sodium silicate plus iron salt as a dispersant, the dispersion of the stability of the fine particles of common gangue mineral quartz in a sodium carbonate solution of pH 10.5 were studied and found that the two dispersion The dispersant is stronger than sodium silicate alone, and the grade of flotation concentrates is high. It is believed that the mechanism of action is that the hydrophilic colloids formed under the experimental conditions play a protective colloid role in the dispersion of fine quartz. The stable dispersion of fine gangue minerals is in favor of flotation of anion collectors of hematite ore.