MICROSTRUCTURAL CHANGES IN COAL DURING LOW-TEMPERATURE ASHING

被引：19

作者：

ALLEN, RM ^{[1
]}

CARLING, RW ^{[1
]}

VANDERSANDE, JB ^{[1
]}

机构：

[1] MIT,DEPT MAT SCI & ENGN,CAMBRIDGE,MA 02139

来源：

FUEL | 1986年 / 65卷 / 03期

关键词：

COAL RESEARCH;

D O I：

10.1016/0016-2361(86)90290-5

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Samples of two US coals were oxidized for 72 hours in a low temperature asher. Scanning transmission electron microscopy and automated electron microprobe analysis were employed to observe the mineralogical changes produced in the coal by the ashing process. It was found that the microstructure of the low temperature ash was strongly influenced by the mineral matter which was originally chemically-bound in the organic matrix of the starting coal. The partial oxidation of pyrite during the ashing was also observed. The results reveal some of the physical mechanisms involved in the low temperature ashing process.

引用

页码：321 / 326

页数：6

共 21 条

[1] ANALYSIS OF SUB-MICRON MINERAL MATTER IN COAL VIA SCANNING-TRANSMISSION ELECTRON-MICROSCOPY [J].