lowgrade

In this study a series of different maturation degree coals are yielded by thermally treating a lowgrade lignite, and are used as the sorbents for sorption equilibrium study of phenanthrene.

将云南先锋褐煤采用热模拟方法制得一组成熟度不同煤,并将煤中干酪根用对菲吸附研究。