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盐类如硫酸盐和磷酸盐中的多价阴离子提高了临界聚沉浓度,而这些阴离子的稀化效应能够被相对应的酸式盐如NaHSO4,NaH2PO4及酸H2SO4和H3PO4中的氢离子抵消。Na4P2O(7焦磷酸钠),Na2HPO4有效地阻止了颗粒聚沉,对高岭土分散液有显著的稀化作用。在高岭土溶液浓度一定的条件下,临界聚沉浓度Ck随阴离子类型而变化。
The polyvalent anions in salts such as sulphates and phosphates increase the critical concentration, and the thinning effect of these anions can be counteracted by the hydrogen ions in the corresponding acid salts such as NaHSO4, NaH2PO4 and acids H2SO4 and H3PO4. Na4P2O (7 sodium pyrophosphate), Na2HPO4 effectively prevent the particle aggregation, the kaolin dispersion has a significant thinning effect. Under certain concentration of kaolin solution, the critical concentration of sediment Ck changes with the type of anion.