| ADSORPTION MECHANISMS OF HS-IONS ON SULPHIDE MINERAL SURFACES RELATED TO Na_2S-INDUCED FLOTATION |
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| 引用本文： | Sun,Shuiyu Wang,Dianzuo Li,Bodan Central-South University of Technoloyy,Changsha 410083,China. ADSORPTION MECHANISMS OF HS-IONS ON SULPHIDE MINERAL SURFACES RELATED TO Na_2S-INDUCED FLOTATION[J]. 中国有色金属学会会刊, 1993, 0(3) |
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| 作者姓名： | Sun Shuiyu Wang Dianzuo Li Bodan Central-South University of Technoloyy Changsha 410083 China |
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| 作者单位： | Sun，Shuiyu Wang，Dianzuo Li，Bodan Central-South University of Technoloyy，Changsha 410083，China |
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| 基金项目： | Supported by National Natural Science Foundation of China |
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| 摘 要： | The adsorption mechanisms of HS~- ions existing in air-saturated alkaline solutions on sulphide minerals (including pyrite, arsenopyrite, chalcopyrite and galena) were investigated. The measurement of adsorption density, solvent extraction-chemical analysis of neutral sulphur at the surfaces, measurements of pulp potential and voltammogram, and flotation tests were done. Both the electrochemical and non-electrochemi cal adsorption models of HS~- ions were established. The former was observed and resulted in the formation of neutral sulphur (S°)when the pyrite and arsenopyrite were chosen, and hence renders the surfaces hy drophobic and induced the two minerals flotation. It is called Na_2S-induced flotation. On the other hand, the latter took place and did not produce S° when the chalcopyrite and galena were selected, and hence de presses the collectorless flotation of the two minerals. The adsorptions of HS~- ions were mainly influenced by potentials, pH and the electron structures of the mineral surfaces.
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ADSORPTION MECHANISMS OF HS-IONS ON SULPHIDE MINERAL SURFACES RELATED TO Na_2S-INDUCED FLOTATION |
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| Sun,Shuiyu Wang,Dianzuo Li,Bodan Central-South University of Technoloyy,Changsha ,China. ADSORPTION MECHANISMS OF HS-IONS ON SULPHIDE MINERAL SURFACES RELATED TO Na_2S-INDUCED FLOTATION[J]. Transactions of Nonferrous Metals Society of China, 1993, 0(3) |
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| Authors: | Sun Shuiyu Wang Dianzuo Li Bodan Central-South University of Technoloyy Changsha China |
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| Affiliation: | Sun,Shuiyu Wang,Dianzuo Li,Bodan Central-South University of Technoloyy,Changsha 410083,China |
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| Abstract: | |
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| Keywords: | HS~- adsorption sulphide minerals Na_2S-induced flotation |
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