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以蛇纹石纯矿物为研究对象,进行了纯矿物浮选、捕收剂(丁基钾黄药)吸附量测定以及相关体系的溶液化学计算分析。结果表明:当pH>6时,Cu(Ⅱ)、Ni(Ⅱ)能够有效的活化丁基钾黄药对蛇纹石的浮选捕收,EDTA二钠能够有效去除Cu(Ⅱ)、Ni(Ⅱ)的活化作用;丁基钾黄药几乎不在纯净的蛇纹石表面吸附,Cu(Ⅱ)、Ni(Ⅱ)的存在能够大幅度提高丁基钾黄药在蛇纹石表面的吸附量,EDTA二钠则能有效地降低其吸附量;在pH 9~10的范围内,Cu(Ⅱ)、Ni(Ⅱ)主要以Cu(OH)_2(s)和Ni(OH)_2(s)的形式存在,通过沉淀罩盖活化蛇纹石的浮选;EDTA二钠能够有效地络合稳定矿浆中的铜、镍羟基络合物,从而抑制丁基钾黄药对蛇纹石的浮选捕收。
Taking serpentine pure mineral as the research object, the pure mineral flotation and the catalysis of the collector (butyl potassium xanthate) were determined, and the solution chemical calculation of the related system was also analyzed. The results show that Cu (Ⅱ) and Ni (Ⅱ) can effectively activate flotation of serpentine by butyl potassium xanthate when pH> 6. Disodium EDTA can effectively remove Cu (Ⅱ) and Ni Ⅱ). Butyl potassium xanthate almost does not adsorb on the pure serpentine surface. The presence of Cu (Ⅱ) and Ni (Ⅱ) can greatly enhance the adsorption capacity of butyl potassium xanthate on the serpentine surface, EDTA disodium can effectively reduce its adsorption capacity; in the range of pH 9-10, Cu (Ⅱ) and Ni (Ⅱ) are mainly composed of Cu (OH) 2 and Ni OH 2 Form of activated serpentinite flotation activated by precipitation; disodium EDTA can effectively complex copper and nickel hydroxide complex in the slurry, thus inhibiting the butyl potassium xanthate flotation catches serpentine Close