STUDIES OF SINTERING OF COAL ASH RELEVANT TO PULVERIZED COAL UTILITY BOILERS .1. EXAMINATION OF THE RAASK SHRINKAGE ELECTRICAL-RESISTANCE METHOD

被引：12

作者：

CONN, RE

AUSTIN, LG

机构：

[1] PENN STATE UNIV,FUEL SCI SECT,UNIVERSITY PK,PA 16802

[2] PENN STATE UNIV,MINERAL PROC SECT,UNIVERSITY PK,PA 16802

来源：

FUEL | 1984年 / 63卷 / 12期

关键词：

BOILER FIRING - Coal;

D O I：

10.1016/0016-2361(84)90097-8

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 Raask shrinkage and electrical resistance method for determining the onset of sintering of fly ash has been tested on a soda lime glass, coal ASTM ashes, fly ashes and pulverized synthetic mineral mixtures. Results with the glass confirmed those of Raask and showed that particle size distribution and bulk density affected the resistance values: the sinter point was indicated by a change in the characteristic temperature coefficient of resistance. The shrinkage and electrical sinter points were usually the same. Holding a compact at a temperature above the sinter point gave increased strength and shrinkage, but no decrease in electrical resistance.

引用

页码：1664 / 1670

页数：7

共 23 条

[1] STUDIES ON SLAG DEPOSIT FORMATION IN PULVERIZED COAL COMBUSTORS .2. RESULTS ON THE WETTING AND ADHESION OF SYNTHETIC ASH DROPS ON DIFFERENT STEEL SUBSTRATES [J].