Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9629186 | Fuel | 2005 | 4 Pages |
Abstract
Optimum conditions for pyrite removal from a high-sulfur coal by electrochemical reduction during flotation are determined by orthogonal experiments. The electrochemical reduction process of pure pyrite is examined with XRD, electrochemical and chemical analysis. The results show that the electrochemical reduction products of pyrite are FeS and S2â. During this process, the reactions at cathode are: FeS2+2eâFeS+S2â and 2H++2eâH2. The corresponding electrode potentials and kinetic equation are determined. The conversion of hydrophobic pyrite to hydrophilic FeS and S2â by electrochemical reduction is beneficial to desulfurization from coal in floatation process.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Wei Zhao, Hong Zhu, Zhi-Min Zong, Jian-Hua Xia, Xian-Yong Wei,