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不同的灰熔点调控方式对煤灰熔融特性的影响

, PP. 145-152

Keywords: 混煤,添加剂,灰熔点,矿物质,x射线衍射

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Abstract:

?对两种原始煤灰进行混合,并分别搭配不同的添加剂,得到3种元素组成相同的煤灰,灰熔点测试结果显示,三者的灰熔点存在较大差异。结合x射线衍射技术和sem-edx(扫描电子显微镜与能谱联用)分析了3种煤灰(>800℃)在高温时的矿物质转化过程。结果表明,不同的灰熔点调控手段对不同煤的影响是不同的。原因是高温时矿物质组成不仅与煤灰化学元素组成相关,更与元素在矿物质中的赋存状态有关。两者共同决定了煤灰的熔融特性。

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