Mechanism study on flotation separation of molybdenite from chalcocite using thioglycollic acid as depressant
Effects of collectors (butyl xanthate (BX), O-isopropyl-N-sulfur ethyl carbamate (Z-200) and emulsified kerosene), dereagent (sodium sulfide) and depressant thioglycollic acid (TGA) on the flotation of chalcocite and molybdenite were investigated through flotation. The first principle theory was ado...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2017-11-01
|
| Series: | International Journal of Mining Science and Technology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095268617305074 |
| _version_ | 1818113335152869376 |
|---|---|
| author | Wenqing Qin Jiajia Wu Fen Jiao Jinming Zeng |
| author_facet | Wenqing Qin Jiajia Wu Fen Jiao Jinming Zeng |
| author_sort | Wenqing Qin |
| collection | DOAJ |
| description | Effects of collectors (butyl xanthate (BX), O-isopropyl-N-sulfur ethyl carbamate (Z-200) and emulsified kerosene), dereagent (sodium sulfide) and depressant thioglycollic acid (TGA) on the flotation of chalcocite and molybdenite were investigated through flotation. The first principle theory was adopted to understand the difference of their surfaces and reaction between minerals and reagents. Results of flotation tests revealed that selectivity of emulsified kerosene is the best of three collectors in separation of chalcocite and molybdenite, though the others also display excellent collecting properties. Sodium sulfide can effectively remove collectors adsorbed on chalcocite surface, and TGA is an effective depressant of chalcocite at pH 8–9. Through first principle study, molybdenite displays relatively stronger covalence property while bonding interaction between copper atoms in chalcocite enhanced its ionicity. Bonding interaction is weaker in reaction of TGA and molybdenite, so it shows higher hydrophobicity and better flotability. Therefore, TGA is an effective inhibitor in the separation. Keywords: Chalcocite, Molybdenite, Thioglycollic acid, Flotation, First-principles study |
| first_indexed | 2024-12-11T03:33:12Z |
| format | Article |
| id | doaj.art-da3e4dcaeb424c97ab3594cae7db74df |
| institution | Directory Open Access Journal |
| issn | 2095-2686 |
| language | English |
| last_indexed | 2024-12-11T03:33:12Z |
| publishDate | 2017-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Mining Science and Technology |
| spelling | doaj.art-da3e4dcaeb424c97ab3594cae7db74df2022-12-22T01:22:20ZengElsevierInternational Journal of Mining Science and Technology2095-26862017-11-0127610431049Mechanism study on flotation separation of molybdenite from chalcocite using thioglycollic acid as depressantWenqing Qin0Jiajia Wu1Fen Jiao2Jinming Zeng3School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, ChinaSchool of Minerals Processing and Bioengineering, Central South University, Changsha 410083, ChinaCorresponding author.; School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, ChinaSchool of Minerals Processing and Bioengineering, Central South University, Changsha 410083, ChinaEffects of collectors (butyl xanthate (BX), O-isopropyl-N-sulfur ethyl carbamate (Z-200) and emulsified kerosene), dereagent (sodium sulfide) and depressant thioglycollic acid (TGA) on the flotation of chalcocite and molybdenite were investigated through flotation. The first principle theory was adopted to understand the difference of their surfaces and reaction between minerals and reagents. Results of flotation tests revealed that selectivity of emulsified kerosene is the best of three collectors in separation of chalcocite and molybdenite, though the others also display excellent collecting properties. Sodium sulfide can effectively remove collectors adsorbed on chalcocite surface, and TGA is an effective depressant of chalcocite at pH 8–9. Through first principle study, molybdenite displays relatively stronger covalence property while bonding interaction between copper atoms in chalcocite enhanced its ionicity. Bonding interaction is weaker in reaction of TGA and molybdenite, so it shows higher hydrophobicity and better flotability. Therefore, TGA is an effective inhibitor in the separation. Keywords: Chalcocite, Molybdenite, Thioglycollic acid, Flotation, First-principles studyhttp://www.sciencedirect.com/science/article/pii/S2095268617305074 |
| spellingShingle | Wenqing Qin Jiajia Wu Fen Jiao Jinming Zeng Mechanism study on flotation separation of molybdenite from chalcocite using thioglycollic acid as depressant International Journal of Mining Science and Technology |
| title | Mechanism study on flotation separation of molybdenite from chalcocite using thioglycollic acid as depressant |
| title_full | Mechanism study on flotation separation of molybdenite from chalcocite using thioglycollic acid as depressant |
| title_fullStr | Mechanism study on flotation separation of molybdenite from chalcocite using thioglycollic acid as depressant |
| title_full_unstemmed | Mechanism study on flotation separation of molybdenite from chalcocite using thioglycollic acid as depressant |
| title_short | Mechanism study on flotation separation of molybdenite from chalcocite using thioglycollic acid as depressant |
| title_sort | mechanism study on flotation separation of molybdenite from chalcocite using thioglycollic acid as depressant |
| url | http://www.sciencedirect.com/science/article/pii/S2095268617305074 |
| work_keys_str_mv | AT wenqingqin mechanismstudyonflotationseparationofmolybdenitefromchalcociteusingthioglycollicacidasdepressant AT jiajiawu mechanismstudyonflotationseparationofmolybdenitefromchalcociteusingthioglycollicacidasdepressant AT fenjiao mechanismstudyonflotationseparationofmolybdenitefromchalcociteusingthioglycollicacidasdepressant AT jinmingzeng mechanismstudyonflotationseparationofmolybdenitefromchalcociteusingthioglycollicacidasdepressant |