Ca2+等3种成分在煤泥凝聚中作用机理的研究

目的对Ca^2＋、Ca（OH）2和OH-3种成分在煤泥凝聚中的作用机理研究与分析，为洗煤废水的处理以及混凝剂的筛选与开发提供理论依据．方法通过试验和理论分析对Ca^2＋、Ca（OH）2和OH-3种成分在煤泥凝聚中的作用及其机理进行研究．结果实验研究结果表明：OH-在煤泥凝聚过程中不直接起作用，Ca^2＋在煤泥凝聚中起着主要作用，Ca（OH）2对煤泥凝聚起一定的补充作用．结论Ca^2＋对煤泥的凝聚，不仅是游离Ca^2＋吸附压缩双电层☆寺作用，而是多方面因素共同作用的结果．沉淀吸附在煤泥颗粒表面的Ca（OH）2对混凝效果有一定的促进作用．

Study on the Action Mechanism of Ca2+ and Two Other Components in Coal Slime Coagulation

For Ca2 ,Ca(OH)2 and OH-,their coagulation mechanism in the coal-slime sedimentation was researched and analysized,which laid a solid foundation for the processing coal-washing wastewater and coagulant selecting and developing.Through the experiment and analysis,the coagulation and its mechanism of Ca2 ,Ca(OH)2 and OH-in coal-slime sedimentation were researched.The results indicated that OH-did not function directly in that process,but Ca2 did,with Ca(OH)2 doing supportively.It showed that the process of Ca2 coagulating coal-slime was the result of both Ca2 compressing double-layer and some other factors.Ca(OH)2 sedimentation on the particles of coal-slime played a promoting role in coagulation.