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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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梧桐木与烟煤混烧的灰分特性分析
, PP. 286-292
Keywords: 灰分特性分析,混烧,晶相,sem/eds,x射线衍射
Abstract:
？通过sem/eds分析、x射线衍射分析和灰熔融性实验对梧桐木与烟煤混烧适宜的灰化温度、灰化时间以及混煤灰的灰分特性进行了研究。研究表明,适宜的灰化时间为2h,灰化温度则根据不同的梧桐木配比分别选取650、700和800℃。随着梧桐木配比的升高,混烧灰中sio2和al2o3的含量逐渐降低,而k2o、cao和mgo的含量逐渐升高,na2o和fe2o3含量的变化,整体维持在较低的水平。当梧桐木配比为30%时,混烧灰中出现钙长石的晶相;当配比为50%时,混烧灰中出现钠长石的晶相,同时莫来石晶相消失,且随着温度的升高混煤灰中结晶相的强度减弱。梧桐木灰中高含量的碱性氧化物与硅铝氧化物所生成的低熔点硅铝酸盐是导致梧桐木混煤灰熔点降低的直接原因。
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