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选矿工业中经常使用多糖抑制剂抑制具有天然可浮性的脉石来提高精矿品位。微浮选研究结果表明 ,在 10 - 3 mol/LKNO3 离子浓度下 ,多糖抑制剂的用量、分子量和化学组成等会影响多糖抑制剂对滑石的抑制作用。对 4种羧甲基纤维素 (CMC)和 3种改性的古尔胶药剂的黏度数据进行了测试 ,并对各种CMC的分子量进行了估算。当体系中加入了含古尔胶的聚合物之后 ,滑石的天然可浮性不仅会降低 ,而且滑石受到的抑制作用也会随着古尔胶分子量的增大而增强。较低用量的古尔胶可强烈抑制滑石 ,进一步增大古尔胶用量不会再增强它对滑石的抑制作用。在 10 - 3 mol/LKNO3 条件下 ,CMC不是滑石的有效的抑制剂。CMC分子量的改变对滑石抑制体系没有产生任何变化 ,但增大CMC的浓度会使抑制作用稍稍得到增强。本文根据以上这些研究和有关的文献提出了聚合物与滑石相互作用的机理
Polysaccharide inhibitors are often used in the beneficiation industry to suppress gangue with natural floatability to improve concentrate grade. The results of micro - flotation study showed that the dosage, molecular weight and chemical composition of polysaccharide inhibitors could affect the inhibitory effect of polysaccharide inhibitors on talc under 10-3 mol / L KNO3. The viscosity data of four carboxymethylcellulose (CMC) and three modified guer gum agents were tested and the molecular weights of various CMCs were estimated. When the system contains a polymer containing gul gum, the natural buoyancy of talc will not only be reduced, but the inhibition of talc will also increase with the increase of the molecular weight of guer gum. Lower levels of guer gum can strongly inhibit talc, and further increase the amount of guer gum will not enhance its inhibitory effect on talc. CMC is not a potent inhibitor of talc at 10 - 3 mol / L KNO3. Changes in molecular weight of CMC did not produce any change in the talc suppression system, but increasing the CMC concentration resulted in a slight increase in inhibition. Based on the above research and related literature, this paper presents the mechanism of the interaction between polymer and talc