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煤直接液化残渣制备水渣浆成浆性的研究

, PP. 1437-1444

Keywords: 水渣浆,流变性,煤直接液化残渣

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Abstract:

?以煤直接液化残渣制备了水渣浆,考察了粒径分布、搅拌时间、分散剂的用量及种类对水渣浆性质的影响。根据实验确定了制备水渣浆的最佳工艺参数:alfred粒径分布模型(d280~154μm、d154~74μm、d<74μm质量分数分别为14%、16%、70%),搅拌时间20min,分散剂加入量为干渣基1.0%。实验结果表明,液化残渣制备水渣浆的定黏质量分数分别为73.5%(nsf)和71.0%(sl)。分散剂萘磺酸盐甲醛缩合物(nsf)的分散降黏效果优于改性碱木质素磺酸钠(sl),而水渣浆的流变性,分散剂sl要优于分散剂nsf。

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