腐泥煤的煤化作用研究

STUDIES ON THE COALIFICATION OF SAPROPELIC COALS

腐泥煤的煤化作用特征目前了解甚少.对我国产出的不同时代、不同煤化程度腐泥煤,结合热模拟试验,并通过与腐殖煤的对比,较系统地研究了在煤化作用过程中,腐泥煤的宏观和微观岩石学特征、元素组成和化学结构的演变规律。在此基础上,探讨了腐泥煤的煤化作用机理,研究了其煤化程度指标,提出了其煤级划分方案。

The coalification of sapropelic coals have been not understand very well. In this paper, the authors, basing on the sapropelic coals occurring in China with different ranks and geological times, combining the resules of the thermal simulating tests, investigate, the characteristics of coalification of sapropelic coals during coalificatoin including the changes of macro—and micro—petrological characteristics, elements composition and chemical structure through comparing these resules with humic coals. On the basis of this, the coalification mechanism of sapropelic coals is discussed, its rank parameters are studies and a rank classification suggested.