大同煤制备超低灰水煤浆

Ultra-Clean Coal Water Slurry Preparation with Datong Coal

以油团聚脱除灰分的大同煤为原料,制备超低灰水煤浆。加入乳化剂来改变煤表面的亲水性,克服了在制备超低灰水煤浆过程中煤的粒度细的困难,通过改变分散剂的种类及用量、调节pH值、温度等因素,可以制得浓度达到53%、黏度小于300mPa.s、稳定性超过28d的超低灰水煤浆。

The ultra-clean coal water slurry（CWSs） is prepared with the Datong coal deashed and desulfurized through the oil agglomeration.The hydrophile of the coal surface is changed by adding the emulsification agents,the difficulty of the fine particles in preparing the ultra-clean CWSs is overcome.The ultra-clean CWSs with superior property of 53% concentration,less than 300mPa·s viscosity and 28 days stability are prepared by adjustment of the type and amount of dispersant,pH values,temperature and so on.