作者：TOSHIHIRO SURUGA;EIICHIRO HATAE;JOKI YOSHITOMI;

作者单位：Krosaki Harima Corp. 1-1, Higashihama-machi, Yawatahigashi-ku, Kitakyushu 806-8586, Japan

刊名：Taikabutsu Overseas

ISSN：0285-0028

出版年：2002-01-05

卷：22

期：2

起页：126

止页：131

分类号：TQ175

语种：英文

关键词：

内容简介

Focusing on magnesia aggregate, which is a principal raw material of magnesia-spinel brick for lining rotary cement kilns, a fundamental study of characteristic properties of aggregates, including crystal size, grain boundary thickness, abrasion resistance, and cement coating adherence, was conducted, with the following key observations:(1) Corrosion resistance of brick tended to increase for magnesia aggregate of high purity, large crystal size, and small grain boundary thickness.(2) Cement coating ability (adherence) of brick tended to increase for magnesia aggregate with high flux content.(3) Thermal spalling resistance of brick tended to increase for magnesia aggregate of high purity and small crystal size.(4) Thermal stress of brick under load tended to decrease for magnesia aggregate with comparatively large grain boundary thickness.(5) The information obtained in this study, related to the characteristics of various kinds of magnesia aggregate, can be used for the improvement of brick, as required for the localized conditions of rotary cement kilns.