微乳液聚合法合成复合型煤泥脱水助滤剂

用合成的非离子型乳化剂SLL与助乳化剂正丁醇配合，将煤油与水制成W/O型微乳液，用该微乳液进行丙烯酰胺聚合，聚合后的微乳液复合体作为煤泥脱水助滤剂使用.6种不同变质程度煤的过滤试验结果表明，助滤效果显著，滤饼水分的最低值分别是：不黏煤19.0 %、气煤16.9 %、肥煤15.9 %、焦煤15.0 %、瘦煤17.1 %、无烟煤12.8 %，过滤速度提高也非常显著，而且水分降低与过滤速度提高是同步的.通过助滤机理探讨，认为其助滤效果不是其中各组分作用效果的简单加和，各组分除了起到其各自应有的作用以外，它们之间具有脱水“协同效应”，是微乳液复合型煤泥脱水助滤剂脱水效果优于其它助滤剂的关键.

Synthesizing of compound filter aids for slimes dewatering through microemulsion polymerization

The W/O microemulsion of kerosene and water was made under the action of synthetic non-ionic emulsifier SLL and n-butyl alcohol.Acrylamide polymerization was carried out in the microemulsion and the polymerized substance acted as filter aids for slime dewatering.The experimental results of six kinds of coal with different rank show that the effect of new type filter aid is clear.Cake moisture can be reduced and the lowest value is respectively: non-caking coal 19.0 %,gas coal 16.9 %,fat coal 15.9 %,coking coal 15.0 %, lean coal 17.1% and anthracite 12.8 %.At the same time,the filtration rate increased obviously.We can see from the analysis of mechanism,the effect of compound filter aid isn't simple addition of each component and dewatering synergism exists among different components.The synergism is the key that this reagent is superior to other filter aids.