Influence of microwave treatment under a hydrogen or methane atmosphere on the flotability of the macerals in Shenfu coals

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• 作者：Wei Zhao ; Fusheng Yang ; Yuangang Li ; Jianlin Qu ; Anning Zhou ; ^{zhouanning2004@yahoo.com.cn}
• 关键词：Microwave ; Modification ; Maceral ; Flotation
• 刊名：Mining Science and Technology (China)
• 出版年：2011
• 出版时间：November 2011
• 年：2011
• 卷：21
• 期：6
• 页码：761-766
• 全文大小：431 K

文摘

The modification of Shenfu coals by a microwave treatment carried out under a hydrogen or a methane atmosphere, and the subsequent maceral separation by flotation, are described in this paper. The surface contact angle and the Zeta potential of the coal macerals were measured both with and without the treatment. The results show that the surface wettability of SFF (Shenfu Fusain) and SFV (Shenfu Vitrain) can be changed by the microwave treatment. An increase in the difference in surface wettability of SFF and SFV causes in a subsequent increase in the enrichment of inertinite and vitrinite. The results of the Zeta potential measurements show that the surface potentials of SFF and SFV are also changed by the treatment.