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首页> 外文会议>International Conference on Industrial Engineering and Engineering Management >Effect of Anion Macromolecular Flocculant on Selective Flocculation of Diaspore
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Effect of Anion Macromolecular Flocculant on Selective Flocculation of Diaspore

机译：阴离子大分子絮凝剂对二抗选择性絮凝剂的影响

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In this study, selective flocculating of diaspore using anion macromolecular reagent as flocculant was tested to separate diaspore from alum-silicate minerals.Firstly, the effect of pH on settling behavior of diaspore and kaolinite dispersions has been investigated. The results show that the maximum settling speed of diaspore and kaolinite appeared respectively at pH7 and pH3.33 which is close to the point of zero charge (PZC) of diaspore (6.8) and kaolinite(3.5). This result is in well agreement with the double electric layer theory.Secondly, the settling behavior of diaspore and kaolinite particles in different anion flocculant solution have been researched. The results indicate that flocculant solution concentration significantly affect the selectivity and the flocculating performance of anion molecular. In high concentration solution, both diaspore and kaolinite have faster settling rate compared to blank solution. However, in low concentration solution, the anion macromolecular can enhance the settling rate of diaspore remarkably but has no apparent effect on the settling rate of kaolinite. This result suggests that the tested anion flocculant is a promising reagent for de-silica of diasporic bauxite.Lastly, FTIR method was employed to probe the adsorption mechanism of flocculant on diaspore and kaolinite. The results reveal that there are anion flocculant characteristic bands on the spectra of diaspore but no obvious characteristic bands of flocculant on the FTIR spectrum of kaolinite. This result is in good correspondence with settling test.
机译：在这项研究中，硬水铝石采用阴离子高分子试剂作为絮凝剂的絮凝选择性从明矾硅酸盐minerals.Firstly，pH对沉降硬水铝石和高岭石的分散体的行为进行了研究的效果进行测试，以单独的硬水铝石。结果表明，最大沉降水硬铝石和高岭石的速度分别出现在pH值为7和pH3.33，接近水硬铝石（6.8）和高岭石（3.5）的零电荷（PZC）的点。这一结果是在用双电层theory.Secondly以及协议，在不同的阴离子絮凝剂溶液硬水铝石和高岭石颗粒的沉降行为进行了研究。结果表明，絮凝剂溶液浓度显著影响选择性和阴离子分子的絮凝性能。在高浓度的溶液，二者硬水铝石和高岭石具有更快的沉降速率相比空白溶液。然而，在低浓度溶液中，阴离子大分子能增强显着铝石的沉降速率，但对高岭石的沉降速率没有明显的影响。这一结果表明，所测试的阴离子絮凝剂是被用来探测絮凝剂对硬水铝石和高岭石的吸附机制流散bauxite.Lastly，FTIR方法的解二氧化硅一个有前途的试剂。结果表明，有在水硬铝石的光谱，但高岭石的红外光谱絮凝剂无明显特征带阴离子絮凝剂特征带。这一结果与沉降试验良好的对应关系。

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