【摘要】 对煤泥水水质普查和溶液化学特征分析得出 ,煤泥水正常的 pH值范围为 7 0～ 8 5 ,在煤泥水中以游离态形式存在的主要有钙、镁、钾、钠金属离子 ,钙离子是黏土颗粒表面吸附的主要离子。溶液化学计算表明 ,虽然黏土颗粒界面区域钙离子的Ksp ,s小于溶液中Ksp,但由于ci,s小于pHs 所对应的形成沉淀的最小浓度 ,因此钙离子在黏土颗粒表面不能以表面沉淀形式存在。更多还原

【Abstract】 Water quality investigation and solution chemical features of the slime water showed that the normal pH value of the slime water is ranging from 7.0 ～ 8.5. There are mainly calcium ion, magnesium ion, potassium ion, natrium ion in dissociated status in the slime water. The calcium ion is the primary ion adsorbed on the surface of clay particles. Although in the clay particle area, K_sp,s of the calcium ion is smaller than K_sp in solution, but due to c_i,s is smaller than the min settling density formed by pH_s, therefore, calcium ion on clay particle surface would not be existed on a surface settling way.更多还原