Selective leaching of antimony and arsenic from mechanically activated tetrahedrite,jamesonite and enargite |
| |
Authors: | P Balá? M Achimovi?ová |
| |
Institution: | Institute of Geotechnics of the Slovak Academy of Sciences, Watsonova 45, 043 53 Košice, Slovakia |
| |
Abstract: | In this study, the changes in surface area, morphology and leachability of antimony and arsenic from tetrahedrite, jamesonite and enargite mechanically activated by a high-energy planetary mill were investigated. It appears that the leaching of antimony from tetrahedrite and jamesonite and arsenic from enargite in alkaline solution of sodium sulphide is temperature-sensitive reaction. The temperature dependencies of all reactions were investigated in the interval 313–363 K. Resulting experimental activation energies were Ea = 111–182 kJ mol− 1 for mechanically activated minerals. The values of Ea are characteristic for processes controlled by surface chemical reactions. |
| |
Keywords: | Tetrahedrite Jamesonite Enargite Mechanical activation Alkaline leaching |
本文献已被 ScienceDirect 等数据库收录! |
|