Lead sorption on the surface of ZnS with relevance to flotation: A fluorescence reflexafs study
XAS was employed to determine the nature of lead speciation on the surface of ZnS with relevance to sphalerite flotation. Lead sorbed onto the ZnS surface from mildly acidic solutions is present in a very disordered environment bonded to oxygen. On the addition of xanthate, bonds are formed between...
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| Veröffentlicht in: | Minerals engineering 1998-11, Vol.11 (11), p.1025-1033 |
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| container_title | Minerals engineering |
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| creator | Pattrick, R.A.D. Charnock, J.M. England, K.E.R. Mosselmans, J.F.W. Wright, K. |
| description | XAS was employed to determine the nature of lead speciation on the surface of ZnS with relevance to sphalerite flotation. Lead sorbed onto the ZnS surface from mildly acidic solutions is present in a very disordered environment bonded to oxygen. On the addition of xanthate, bonds are formed between the surface lead and the xanthate sulfur, creating a more ordered structural environment for the lead. Atomistic computer simulations demonstrated that direct sorption of Pb onto the ZnS surface is energetically unfavourable. Thus, XAS has provided direct structural information for the processes involved in the activation of sphalerite during galena flotation. |
| doi_str_mv | 10.1016/S0892-6875(98)00090-9 |
| format | Article |
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Lead sorbed onto the ZnS surface from mildly acidic solutions is present in a very disordered environment bonded to oxygen. On the addition of xanthate, bonds are formed between the surface lead and the xanthate sulfur, creating a more ordered structural environment for the lead. Atomistic computer simulations demonstrated that direct sorption of Pb onto the ZnS surface is energetically unfavourable. Thus, XAS has provided direct structural information for the processes involved in the activation of sphalerite during galena flotation.</description><identifier>ISSN: 0892-6875</identifier><identifier>EISSN: 1872-9444</identifier><identifier>DOI: 10.1016/S0892-6875(98)00090-9</identifier><identifier>CODEN: MENGEB</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Applied sciences ; Exact sciences and technology ; flotation activators ; Flotation. Enrichment. Beneficiation ; froth flotation ; Metals. 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Lead sorbed onto the ZnS surface from mildly acidic solutions is present in a very disordered environment bonded to oxygen. On the addition of xanthate, bonds are formed between the surface lead and the xanthate sulfur, creating a more ordered structural environment for the lead. Atomistic computer simulations demonstrated that direct sorption of Pb onto the ZnS surface is energetically unfavourable. Thus, XAS has provided direct structural information for the processes involved in the activation of sphalerite during galena flotation.</description><subject>Applied sciences</subject><subject>Exact sciences and technology</subject><subject>flotation activators</subject><subject>Flotation. Enrichment. Beneficiation</subject><subject>froth flotation</subject><subject>Metals. 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| ispartof | Minerals engineering, 1998-11, Vol.11 (11), p.1025-1033 |
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| subjects | Applied sciences Exact sciences and technology flotation activators Flotation. Enrichment. Beneficiation froth flotation Metals. Metallurgy modelling Ores Production of metals Sulphide ores |
| title | Lead sorption on the surface of ZnS with relevance to flotation: A fluorescence reflexafs study |
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