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煤系高岭土料浆的粘度及影响因素
Authors
卢旭晨
李佑楚
王绪海
Publication date
1 January 2004
Publisher
Abstract
煤系高岭土料浆的浓分散体系为非牛顿流体,具有剪切变稀的特性.阴离子型分散剂聚丙烯酸钠可吸附于煤系高岭土颗粒的表面,改变其表面电势,增加颗粒间的排斥能,从而起到很好的分散作用.通过实验,研究了固相浓度、分散剂用量、粒径大小等因素对煤系高岭土料浆粘度的影响.固相浓度增大、粒径减小时,料浆的粘度增大;分散剂可使料浆粘度降低,当最佳用量为0.3%左右,在高剪切速率(729S^-1)下,固相浓度由30%(ω)提高到70%(ω),料浆的粘度分别为0.004和0.020Pa.s
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Last time updated on 05/12/2019