次火山热变质煤中Ge、Ga、As、S的分布特征

DISTRIBUTION OF Ge, Ga,As,S IN THE COAL METAMORPHIZED BY HEAT OF SUB-VOLCANICS

五牧场区是内蒙东部伊敏褐煤盆地中一个因次火山侵入作用形成的局部的烟煤区。在煤变质过程中,锗、硫从高变质煤中逸出,并在上部低变质煤中富集。锗、硫、砷与煤中有机质呈正相关,镓与煤中灰分呈正相关,随变质程度增加相关性下降。

Wumuchang Area is a local bituminous coal district metamorphized by sub-volcanics in Yiming Coal Field which is located in northeast China. In the coalification process, Ge,S migrated from the coal with higher coal ranks, moved with thermal water to upper part, precipitated and enriched in the coal with lower coal ranks. Ge,S As corelated positively and Ga negatively with organic matter of coal, but the corelation coefficiency decrease with increase of coalification of the coal.