表面活性剂用于细粉煤脱水的研究

Research on Application of Surfactant to Dewatering of Fine Clean Coal

精粉煤脱水是炼焦精煤洗选后的一个极其困难的课题 ,采用助滤剂促进滤饼水分的降低是一条经济而有效的途径 ,作者阐述了利用表面活性剂作为助滤剂 ,强化细粉煤的脱水 ,取得了显著效果。实验室两种煤样采用磺酸盐型表面活性剂 ,脱水后最佳降水值分别达到 4 9%和5 96 % ,大屯煤矿洗煤厂连续工业实验采用硫酸酯盐型表面活性剂 ,最佳降水值达到 6 0 8%。

Dewatering of fine clean coal is the most difficult problem of the process of coking coal preparation.Applying auxiliary filtering agent to the filter cake to reduce the moisture content of filter cake is an efficient and economic way.This treatise interprets the research on application of surfactant as an auxiliary filtering agent for enhancing the dewatering of fine clean coal and with remarkable efficacy.The dewatering values of two different kinds of coal,in which sulfonate type surfactant is applied separately in laboratory tests,reached 4.90% and 5 96%.The optimized dewatering value of industrial practice in Datun Coal Preparation Plant reaches 6.08% by applying sulphate type surfactant.