煤泥水絮凝处理中絮凝体的分形特征  

Fractal Characteristics of Flocs in Coal Slurry Treated Using PAM

作　　者：张明青[1,2] 刘炯天[3] 何伟[2] 曾艳[2] 刘汉湖[1,2] 刘琴亚[4] 

机构地区：[1]江苏省资源环境信息工程重点实验室,江苏徐州221008 [2]中国矿业大学环境与测绘学院,江苏徐州221008 [3]中国矿业大学化工学院,江苏徐州221008 [4]中国气象科学研究院,北京100081

出　　处：《环境科学研究》2009年第8期956-960,共5页Research of Environmental Sciences

基　　金：国家杰出青年科学基金项目(50425414);中国矿业大学科技基金项目(2006A028);教育部科学研究重大项目(308011)

摘　　要：用聚丙烯酰胺作絮凝剂,研究了所含黏土类型、絮凝剂投加量等因素对煤泥水絮凝效果和絮凝体分形维数的影响.结果表明,含高岭石的煤泥水絮凝剂最佳投加量为10.0 mg/L,所对应絮凝体的分形维数最大,为2.70.投加量不足时分形维数降至1.55,投加量过量时分形维数降至1.95;含蒙脱石的煤泥水絮凝剂最佳投加量为15.0 mg/L,所对应絮凝体分形维数最大,为1.68.投加量不足时分形维数降至1.01,投加量过量时分形维数降至1.51.Flocculation experiments using PAM were carried out to study the influence of coal slurry clay type and flocculant dosage on fractal dimension of aggregated flocs and slurry fiocculation efficiency. The results showed that optimal flocculation efficiency can be obtained with the highest fractal dimension of 2.70, and the optimal flocculant dosage is 10.0 mg/L with kaolinite in coal slurry. The fractal dimension decreases to 1.55 and 1.95 with underdosage and overdosage of flocculant, respectively. For coal slurry containing montmorillonite, the biggest fractal dimension is 1.68, with the optimal flocculant dosage of 15.0 rag/L; fractal dimension decreases to 1.01 and 1.51 when underdosage and overdosage of fiocculant is applied, respectively.

关 键 词：煤泥水 絮凝 分形维数 

分 类 号：TD94[矿业工程—选矿]