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Dong J, Liu Q, Yu L, Subhonqulov S. The interaction mechanism of Fe3+ and NH4+ on chalcopyrite surface and its response to flotation separation of chalcopyrite from arsenopyrite. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117778] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Kasomo RM, Li H, Chen Q, Soraya DA, Leopold M, Weng X, Mwangi AD, Kiamba E, Ge W, Song S. Behavior and mechanism of sodium sulfite depression of almandine from rutile in flotation system. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2020.06.088] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Parametric Optimization in Rougher Flotation Performance of a Sulfidized Mixed Copper Ore. MINERALS 2020. [DOI: 10.3390/min10080660] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The dominant challenge of current copper beneficiation plants is the low recoverability of oxide copper-bearing minerals associated with sulfide type ones. Furthermore, applying commonly used conventional methodologies does not allow the interactional effects of critical parameters in the flotation processes to be investigated, which is mostly overlooked in the literature. To tackle this issue, the present paper aimed at characterizing the behavior of five key effective factors and their interactions in a sulfidized copper ore. In this context, dosage of collector (sodium di-ethydithiophosphate, 60–100 g/t), depressant (sodium silicate, 80–120 g/t) and frother (methyl isobutyl carbinol (MIBC), 6–10 g/t), pulp pH (7–11) and agitation rate (900–1300 rpm) were examined and statistically analyzed using response surface methodology. Flotation experiments were conducted in a Denver type agitated flotation cell at the rougher stage. The experimental results showed that increasing the pH (from 8 to 10) at low agitation rate (1000 rpm) enhanced the recovery from 80.36% to 85.22%, while at high agitation rate (1200 rpm), a slight declination occurred in the recovery. Meanwhile, increasing the collector dosage at a lower frother value (7 g/t), caused a reduction of about 4.44% in copper recovery owing to the interactions between factors, whereas at a higher frother level (9 g/t), the recovery was almost unchanged. The optimization process was also performed using the goal function approach, and maximum copper recovery of 92.75% was obtained using ~70 g/t collector, 110 g/t depressant, 7 g/t frother, pulp pH of 10 and 1000 rpm agitation rate.
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Masdarian M, Azizi A, Bahri Z. Mechanochemical sulfidization of a mixed oxide-sulphide copper ore by co-grinding with sulfur and its effect on the flotation efficiency. Chin J Chem Eng 2020. [DOI: 10.1016/j.cjche.2019.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Dhar P, Chernyshova IV, Thornhill M, Roelants S, Soetaert W, Kota HR. Floatability of Chalcopyrite by Glycolipid Biosurfactants as Compared to Traditional Thiol Surfactants. TENSIDE SURFACT DET 2019. [DOI: 10.3139/113.110639] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
To reduce environmental and occupational impact of flotation reagents, there is an emerging need to find greener reagents for sulphide mineral flotation. This study presents a comparison of the interactions of chalcopyrite with three glycolipid biosurfactants (sophorolipid, glucolipid and glucoside) and three traditional thiol surfactants (collectors) to assess the potential of the biosurfactants as collectors. The mineral-surfactant interactions are studied using adsorption isotherm, zeta potential, FTIR spectroscopy and flotation tests. We find that glycolipid biosurfactants hold high potential as collectors for flotation of copper sulphides.
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Affiliation(s)
- Priyanka Dhar
- Department of Geoscience and Petroleum Engineering , Norwegian University of Science and Technology, NO-7491 TRONDHEIM , Norway
| | - Irina V. Chernyshova
- Department of Geoscience and Petroleum Engineering , Norwegian University of Science and Technology, NO-7491 TRONDHEIM , Norway
- Department of Earth and Environmental Engineering , Columbia University, New York, 10027 NY , USA
| | - Maria Thornhill
- Department of Geoscience and Petroleum Engineering , Norwegian University of Science and Technology, NO-7491 TRONDHEIM , Norway
| | - Sophie Roelants
- Bio Base Europe Pilot Plant , Rodenhuizekaai 1, 9042 Gent , Belgium
- Centre for Industrial Biotechnology and Biocatalysis (InBio.be) , Department of Biotechnology (BW25), Faculty of Bioscience Engineering, Ghent University, Coupure Links 653 , 9000 Ghent – Belgium
| | - Wim Soetaert
- Bio Base Europe Pilot Plant , Rodenhuizekaai 1, 9042 Gent , Belgium
- Centre for Industrial Biotechnology and Biocatalysis (InBio.be) , Department of Biotechnology (BW25), Faculty of Bioscience Engineering, Ghent University, Coupure Links 653 , 9000 Ghent – Belgium
| | - Hanumantha Rao Kota
- Department of Geoscience and Petroleum Engineering , Norwegian University of Science and Technology, NO-7491 TRONDHEIM , Norway
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Yu L, Liu Q, Li S, Deng J, Luo B, Lai H. Depression mechanism involving Fe3+ during arsenopyrite flotation. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.04.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Investigation of Copper Recovery from a New Copper Ore Deposit (Nussir) in Northern Norway: Dithiophosphates and Xanthate-Dithiophosphate Blend as Collectors. MINERALS 2019. [DOI: 10.3390/min9030146] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The Norwegian mining industry is currently showing increasing interest in the production of metals. Recent research has demonstrated promising results identifying the high potential of the Nussir deposit for the production of copper and other valuable minerals. Mineralogical characterization for Nussir ore samples and their flotation concentrates was performed with optical microscopy and Zeiss automated mineralogy (Mineralogic) where the fine copper sulphide middlings were not completely recovered with a traditional sodium isobutyl xanthate (SIBX) collector. In the current study, dithiophosphate and a mixture of xanthate and dithiophosphate collectors’ interaction on copper and other gangue mineral components of the ore sample were investigated with zeta potential, quantitative adsorption, FTIR studies and Hallimond tube flotation. All the results for single mineral experiments confirmed the feasibility of selective copper sulphide flotation by disecondary butyl dithiophosphate (DBD) as collector. The blend of xanthate and dithiophosphate was chemically adsorbed as individual entities on the surface of the copper minerals via competitive adsorption. A systematic study with DBD and a mixed collector (SIBX and DBD) system was conducted on the coarse grind (−105 µm) of the Nussir ore sample, and the results showed a synergistic interaction between the two reagents. The beneficiated copper concentrate using this mixture of collectors is indeed of improved copper grade and recovery. The highest copper recovery in bench scale flotation was 95.3% with a concentrate grade of 19.4% Cu for DBD collector, whereas mixtures of dithiophosphate and xanthate collectors in the ratio of 3:1 resulted in the highest copper grade (24.7%) and recovery (96.3%).
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Moslemi H, Gharabaghi M. A review on electrochemical behavior of pyrite in the froth flotation process. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2016.12.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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Chekli L, Bayatsarmadi B, Sekine R, Sarkar B, Shen AM, Scheckel KG, Skinner W, Naidu R, Shon HK, Lombi E, Donner E. Analytical characterisation of nanoscale zero-valent iron: A methodological review. Anal Chim Acta 2015; 903:13-35. [PMID: 26709296 DOI: 10.1016/j.aca.2015.10.040] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 10/27/2015] [Accepted: 10/29/2015] [Indexed: 12/01/2022]
Abstract
Zero-valent iron nanoparticles (nZVI) have been widely tested as they are showing significant promise for environmental remediation. However, many recent studies have demonstrated that their mobility and reactivity in subsurface environments are significantly affected by their tendency to aggregate. Both the mobility and reactivity of nZVI mainly depends on properties such as particle size, surface chemistry and bulk composition. In order to ensure efficient remediation, it is crucial to accurately assess and understand the implications of these properties before deploying these materials into contaminated environments. Many analytical techniques are now available to determine these parameters and this paper provides a critical review of their usefulness and limitations for nZVI characterisation. These analytical techniques include microscopy and light scattering techniques for the determination of particle size, size distribution and aggregation state, and X-ray techniques for the characterisation of surface chemistry and bulk composition. Example characterisation data derived from commercial nZVI materials is used to further illustrate method strengths and limitations. Finally, some important challenges with respect to the characterisation of nZVI in groundwater samples are discussed.
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Affiliation(s)
- L Chekli
- School of Civil and Environmental Engineering, University of Technology, Sydney, Post Box 129, Broadway, NSW 2007, Australia; CRC CARE, PO Box 486, Salisbury, SA 5106, Australia
| | - B Bayatsarmadi
- School of Chemical Engineering, The University of Adelaide, Engineering North Building, Adelaide, SA 5005, Australia
| | - R Sekine
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Building X, Mawson Lakes Campus, SA 5095, Australia
| | - B Sarkar
- CRC CARE, PO Box 486, Salisbury, SA 5106, Australia; Centre for Environmental Risk Assessment and Remediation, University of South Australia, Building X, Mawson Lakes Campus, SA 5095, Australia
| | - A Maoz Shen
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Building X, Mawson Lakes Campus, SA 5095, Australia
| | - K G Scheckel
- U.S. Environmental Protection Agency, National Risk Management Research Laboratory, Land Remediation and Pollution Control Division, 5995 Center Hill Avenue, Cincinnati, OH, USA
| | - W Skinner
- Ian Wark Research Institute, University of South Australia, Building IW, Mawson Lakes Campus, SA 5095, Australia
| | - R Naidu
- CRC CARE, PO Box 486, Salisbury, SA 5106, Australia; Centre for Environmental Risk Assessment and Remediation, University of South Australia, Building X, Mawson Lakes Campus, SA 5095, Australia
| | - H K Shon
- School of Civil and Environmental Engineering, University of Technology, Sydney, Post Box 129, Broadway, NSW 2007, Australia; CRC CARE, PO Box 486, Salisbury, SA 5106, Australia
| | - E Lombi
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Building X, Mawson Lakes Campus, SA 5095, Australia.
| | - E Donner
- CRC CARE, PO Box 486, Salisbury, SA 5106, Australia; Centre for Environmental Risk Assessment and Remediation, University of South Australia, Building X, Mawson Lakes Campus, SA 5095, Australia
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Brito e Abreu S, Brien C, Skinner W. ToF-SIMS as a new method to determine the contact angle of mineral surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:8122-8130. [PMID: 20180578 DOI: 10.1021/la904443s] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Time-of-flight secondary ion mass spectrometry (ToF-SIMS) has been used as a technique to correlate the surface chemistry of chalcopyrite particles with their contact angle. Three particle sizes (20-38, 75-105, and 150-210 microm) were used, covering a range of contact angles between 20 and 90 degrees. Multivariate statistical techniques were applied to the ToF-SIMS data in order to identify structure in the data and the surface species contributing the most to surface chemistry and hence the hydrophobicity variation. A method to calculate the contact angle of chalcopyrite by ToF-SIMS surface analysis has been developed using only information from three secondary ions: oxygen, sulfur, and a thiol collector fragment. This approach is capable of determining the surface chemistry contribution to the contact angle of individual mineral particles and the distribution of contact angles within a large ensemble of particles. Further measurements verified that the methodology can also be applied to flat surfaces, enabling rapid surface chemistry-hydrophobicity correlations to be made on a wide range of mineral and material systems.
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Affiliation(s)
- Susana Brito e Abreu
- Ian Wark Research Institute, ARC Special Research Centre for Particle and Material Interfaces, University of South Australia, Mawson Lakes, South Australia 5095, Australia
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Priest C, Stevens N, Sedev R, Skinner W, Ralston J. Inferring wettability of heterogeneous surfaces by ToF-SIMS. J Colloid Interface Sci 2008; 320:563-8. [DOI: 10.1016/j.jcis.2008.01.042] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2007] [Revised: 01/22/2008] [Accepted: 01/26/2008] [Indexed: 11/17/2022]
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Electrochemical behaviour of chalcopyrite in the absence and presence of dithiophosphate. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.minpro.2004.08.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Güler T, Hiçyilmaz C, Gökağaç G, Ekmekçi Z. Voltammetric and drift spectroscopy investigation in dithiophosphinate–chalcopyrite system. J Colloid Interface Sci 2004; 279:46-54. [PMID: 15380410 DOI: 10.1016/j.jcis.2004.06.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2004] [Accepted: 06/11/2004] [Indexed: 11/21/2022]
Abstract
The mechanism of dithiophosphinate (DTPI) adsorption on chalcopyrite was investigated by diffuse reflectance Fourier transformation (DRIFT) spectroscopy and by cyclic voltammetry (CV) at various pHs. CV experiments showed that the redox reactions occurred at a certain degree of irreversibility on the chalcopyrite surface in the absence of a collector due to preferential dissolution of iron ions in slightly acid solution and irreversible surface coverage by iron oxyhydroxides in neutral and alkaline solutions. In the presence of DTPI, CV experiments failed to identify the type of the adsorbed DTPI species and electrochemical processes occurring on chalcopyrite due to formation of an electrochemically passive surface layer preventing electron transfer. However, DRIFT spectroscopy tests showed this passive layer to be mainly CuDTPI + (DTPI)2. Both CV and DRIFT spectroscopy established that the activity of collector species decreased with increasing pH due to formation of stable hydrophilic metal oxyhydroxides on the chalcopyrite surface.
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Affiliation(s)
- Taki Güler
- Metallurgical and Materials Engineering Department, Cumhuriyet University, 58140 Sivas, Turkey.
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Hydrophobicity of chalcopyrite with dithiophosphate and dithiophosphinate in electrochemically controlled condition. Colloids Surf A Physicochem Eng Asp 2004. [DOI: 10.1016/j.colsurfa.2004.01.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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17
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Hicyilmaz C, Altun N, Ekmekci Z, Gokagac G. Pyrite–DTPI interaction as a function of pulp potential and pH. Colloids Surf A Physicochem Eng Asp 2004. [DOI: 10.1016/j.colsurfa.2003.11.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Grano S, Sollaart M, Skinner W, Prestidge C, Ralston J. Surface modifications in the chalcopyrite-sulphite ion system. I. collectorless flotation, XPS and dissolution study. ACTA ACUST UNITED AC 1997. [DOI: 10.1016/s0301-7516(96)00046-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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