湿磨工艺制备污泥水煤浆中污泥对粒度的影响  

Effects of sludge on particle sizes of coal sludge slurry prepared by a wet-grinding process

作　　者：马少莲[1,2,3] 吴国光[1,2,3] 周蕊[1,2] 孟献梁[1,2,3] 

机构地区：[1]中国矿业大学化工学院,江苏徐州221116 [2]中国矿业大学现代分析与计算中心,江苏徐州221116 [3]煤炭加工与高效洁净利用教育部重点实验室,江苏徐州221116

出　　处：《煤炭工程》2016年第10期124-126,共3页Coal Engineering

基　　金：国家自然科学基金(51204179);中央高校基本科研业务费专项资金资助(2014XT05);江苏高校优势学科建设工程资助项目(BK20141242)

摘　　要：通过正交实验考察湿磨工艺制备污泥水煤浆的粒度分布情况,并对比平行实验条件下制备水煤浆的粒度数据。研究发现,污泥的掺混均增加了浆体中细颗粒的累积分布,其中干污泥比湿污泥更有利于细颗粒的产生;湿磨时间对污泥水煤浆粒度的影响大于分散剂添加量的影响;此外,高比例的细粒度分布也成为污泥水煤浆粘度增加,成浆性降低的影响因素之一。In order to study the effects of sludge on particle sizes,the particle size distributions of coal sludge slurry（ CSSs） prepared by a wet-grinding process were studied through orthogonal test. Coal water slurry（ CWSs） was prepared at the same experiment conditions. According to the particle sizes comparison of CSSs and CWSs,the sludge can improve the cumulative distribution of fine particles in slurries; dry sludge is more beneficial to the production of fine particles than wet sludge; time of wet-grinding has a greater effect on particle sizes of CSSs than dispersant dosage. Additionally,high cumulative distribution of fine particles is one of the impact factors on the increase of CSSs viscosity and the decrease of slurryability.

关 键 词：正交实验 污泥水煤浆 湿磨工艺 粒度 

分 类 号：TQ519[化学工程]