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不同硫含量的煤对水泥熟料烧成和矿物组成的影响

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Abstract:

通过添加硫含量在2.10%~5.21%之间的高硫煤与原料混合,配制了具有相同石灰饱和系数、硅率和铝率的几种熟料,并在1200,1250,1300,1350,1400和1450℃保温30min烧成熟料。应用差示扫描量热仪、X射线衍射仪和环境扫描电镜来研究熟料液相初析温度、熟料矿物、含硫矿物以及熟料形貌。结果显示高硫煤的引入降低了液相初析温度(10~30℃),促进了阿利特晶体的生成和长大。硫的固溶改变了阿利特、贝利特的含量和铝酸盐的晶型。

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