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氯化冶金炉耐火材料腐蚀、黏附行为研究
Authors
丁剑
仉小猛
+4 more
付国燕
刘娅
叶树峰
魏连启
Publication date
1 January 2015
Publisher
Abstract
氯化冶金工艺中炉料成分复杂,易对氯化冶金炉耐火材料产生腐蚀、黏附,影响耐火材料的寿命,并阻碍氯化焙烧提金工艺产业化。将4种常见Al2O3-Si O2系耐火砖小块放入炉料中长时间焙烧,分析其接触面的物相,得出含Ca Cl2的矿粉在高温下对耐火材料的界面腐蚀特性:1 200℃下高铝耐火砖不粘料、不与炉料反应,高硅耐火砖中Si O2则会与炉料中Ca反应而被侵蚀;1 250℃时由于铁氧化物在氧化铝中的固溶及低熔点物质的生成,高铝耐火砖开始发生炉料的黏附;1 250℃时高硅耐火砖开始发生炉料的渗入,并由于Ca元素与Si O2的反应而被侵蚀;随着温度的升高,Fe2O3在Al O3中的固溶量增加,1 300℃时铁在高铝耐火材料中的富集更为明显
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Last time updated on 05/12/2019