褐煤

It is the unsolidified sediment consisting of disordered kaolinite and small amount organic matter and lignite materials.

常含少量有机质或与层等伴生。

The results indicated that the trace elements molybdenum and zirconium increased considerably the gas yields of the lignitic organic matter while selenium did not.

分析结果表明,除硒元素外,随着钼元素和锆元素的加入,有机质气态产物的生成量显著提高。

Humic acid (HA ) was abstracted from leonardite,and a composite superabsorbent (HA PSA ) was prepared by compounding poly (acrylic acid ) and lignitic humic acid.

以风化为原料制腐植酸(HA),将HA与普通型保水剂(PSA)复合,获得HA型保水剂(HA-PSA)。

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.

将云南先锋采热模拟的实验方法制得一组成熟度不同的,并将中的干于对菲的吸附研究。