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Effect of silicate bacteria on quartz flotation separation

ABSTRACT Taking quartz as the research object, the effect of silicate bacteria pretreatment on quartz flotation was investigated. After pretreating quartz for 3 days by using silicate bacteria, taking dodecylamine as the collector, the maximum recovery ratio of quartz was 92.74%. The quartz was transformed from insoluble crystalline form to soluble amorphous form; the metabolites of microorganism, organic acids, and polysaccharides, had a dissolving effect on quartz; With the increase of the surface dissolution area of quartz, the binding sites of quartz and dodecylamine increased, thereby improving the collection effect of dodecylamine.