CHEMISTRY AND MINERALOGY OF CARBONATES IN AUSTRALIAN BITUMINOUS AND SUBBITUMINOUS COALS

被引：22

作者：

PATTERSON, JH ^{[1
]}

CORCORAN, JF ^{[1
]}

KINEALY, KM ^{[1
]}

机构：

[1] CSIRO,DIV EXPLORAT & MIN,N RYDE,NSW 2113,AUSTRALIA

来源：

FUEL | 1994年 / 73卷 / 11期

关键词：

COAL; SCANNING ELECTRON MICROSCOPY; CARBONATES;

D O I：

10.1016/0016-2361(94)90161-9

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：

The amount and chemical composition of carbonate minerals are important in relation to their influence on ash characteristics during coal utilization in conventional power stations and slagging gasifiers. Scanning electron microscopy and electron microprobe analyses have been used for in situ analysis of carbonates in Australian bituminous coals. Compositional ranges have been established for six main types of carbonates observed: calcite, dolomite-ankerite, siderite, magnesian siderite, magnesian-calcian siderite and calcian siderite. With the exception of calcite and siderite, the chemical compositions of individual carbonate grains are variable, reflecting different levels of cation substitution. Carbonate minerals strongly influence ash fusion temperatures, slagging propensity and molten slag characteristics of Australian bituminous coals.

引用

页码：1735 / 1745

页数：11

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