Improved extraction of alumina from coal gangue by surface mechanically grinding modification

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Improved extraction of alumina from coal gangue by surface mechanically grinding modification

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作者：Yanxia Guo¹ ; ^{guoyx@sxu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Kezhou Yan¹ ; Li Cui ; Fangqin Cheng ; ^{cfangqin@sxu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
关键词：Mechanical activation ; Grinding ; Alumina extraction ; Calcination ; Coal gangue ; Kaolinite
刊名：Powder Technology
出版年：2016
出版时间：November 2016
年：2016
卷：302
期：Complete
页码：33-41
全文大小：1306 K

文摘

•: Mechanical grinding greatly improved the alumina extraction from coal gangue.
•: Kaolinite in coal gangue still maintained the SiOAl^VI structure without calcination.
•: An amorphous metakaolinite with SiOAl^IV structure was formed with calcination.
•: Grinding before calcination made the amorphous transformation more completely.

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