铁离子和铅离子对白钨矿与石英浮选的影响及机理研究

发布时间：2018-03-05 09:32

本文选题：白钨矿　切入点：石英　出处：《矿产保护与利用》2017年02期 　论文类型：期刊论文

【摘要】：通过浮选试验和浮选溶液化学计算研究了铁离子和铅离子对白钨矿与石英浮选的影响。结果表明,油酸钠捕收剂时,在pH=6~10范围内铅离子对白钨矿与石英浮选的影响较小,而铁离子对石英的活化能力明显强于白钨矿,不利于白钨矿与石英的分离;当pH=10~11.0时,铅离子和铁离子对白钨矿与石英可浮性的影响逐渐减弱;当pH=11.0时铅离子对白钨矿有抑制剂作用,不利于白钨矿与石英分离,而铁离子基本不影响白钨矿与石英的浮选分离。浮选溶液化学计算表明,Fe(OH)_3(S)与油酸钠反应所对应的pH范围决定了白钨矿与石英被活化的pH区间,而Pb~(2+)离子、Pb(OH)~+离子以及Pb(OH)_2(S)则是铅离子活化白钨矿和石英的主要原因。
[Abstract]:The effect of iron ion and lead ion on the flotation of scheelite and quartz was studied by flotation test and chemical calculation of flotation solution. The results showed that the lead ion had little effect on the flotation of scheelite and quartz in the range of pH=6~10 when the collector of sodium oleate was used. The activation ability of iron ions to quartz is obviously stronger than that of scheelite, which is not conducive to the separation of scheelite from quartz, and the effect of lead ion and iron ion on the floatability of scheelite and quartz decreases gradually when pH=10~11.0 occurs. When pH=11.0, lead ion has inhibitor effect on scheelite, which is unfavorable to separation of scheelite from quartz. The flotation separation of scheelite and quartz was not affected by iron ions. The chemical calculation of flotation solution showed that the pH range corresponding to the reaction of Scheelite with sodium oleate determined the pH range of the activation of scheelite and quartz, and the chemical calculation of flotation solution showed that the pH range of the reaction between Scheelite and quartz was determined by the pH range corresponding to the reaction with sodium oleate. The Pb~(2 ion, PbOH ~ +, and PBO / OHH ~ + S) are the main reasons for the activation of scheelite and quartz by lead ions.
【作者单位】：西安科技大学化学与化工学院;东北大学资源与土木工程学院;
【基金】：西安科技大学博士启动金项目(2015QDJ068);西安科技大学校级培育基金项目(201624) 国家自然科学基金项目(51404194)
【分类号】：TD923

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