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摘要:
许多硫化矿常与滑石等镁硅酸盐矿物共存，滑石因其良好的可浮性影响硫化矿浮选分离，影响硫化矿选矿综合指标，对于这类硫化矿常通过抑制滑石实现二者的浮选分离，故对滑石抑制剂及其作用机理进行研究有着重要的意义。本文综述了滑石抑制剂研究进展，滑石抑制剂分为无机类和有机类，无机抑制剂如水玻璃、六偏磷酸钠等在硫化矿浮选中被广泛应用，其抑制机理主要为水解后形成的物质吸附于滑石表面，从而使得滑石亲水；高分子有机抑制剂如CMC、古尔胶等对滑石抑制能力较强，选择性较好，此类药剂主要是通过羟基、羧基与滑石形成氢键、化学键，使滑石亲水，实现硫化矿与滑石的浮选分离。采用有效的高分子抑制剂是今后实现滑石与硫化矿浮选分离的主要方向，而高分子抑制剂中-OH与-COOH是抑制滑石的主要官能团，这为滑石抑制剂的改性、设计与开发提供了依据。
Abstract:Many sulphide ore often coexist with magnesium silicate minerals such as talc. Due to its good floatability, talc causes difficulties in flotation separation of sulfide ore, affecting the comprehensive index of sulfide ore dressing. For such sulfide ore, it is often achieved by inhibiting talc. Flotation separation, so it is of great significance to study talc inhibitors and their mechanism of action. In this paper, the research progress of talc inhibitors is reviewed. The talc inhibitors are classified into inorganic and organic. Inorganic inhibitors such as water glass and sodium hexametaphosphate are widely used in sulfide ore flotation. The inhibition mechanism are as follows. The substance formed after hydrolysis is adsorbed on the surface of talc, which makes the talc hydrophilic; high molecular organic inhibitors such as CMC and Gur, have strong inhibition ability on talc and good selectivity. These agents mainly form hydrogen bonds through hydroxyl, carboxyl and talc. The chemical bond makes the talc hydrophilic, and realizes the flotation separation of sulfide ore and talc. The use of effective polymer inhibitors is the main direction for the separation of talc and sulfide ore flotation. In the polymer inhibitors, -OH and -COOH are the main functional groups for inhibiting talc. This is the modification, design and modification of talc inhibitors. Development provides the basis.
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