Influence of grinding method on complex sulphide ore flotation: a pilot plant study

Forssberg, K.S.E.; Subrahmanyam, T.V.; Nilsson, Larsgunnar

doi:10.1016/0301-7516(93)90073-j

Cited by 33 publications

(12 citation statements)

References 5 publications

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“…The usual procedure in the flotation stage of complex sulphide ore is floating Cu and Pb minerals in the first stage while Zn mineral is floated in the second stage (Liu and Zhang, 2000;Woodcock et al, 2007). Pb mineral flotation is usually affected by a number of factors which includes components and species present in the pulp (Chen et al, 2009;Das et al, 1997;Grano et al, 1990;Göktepe and Williams, 1995;Houot and Duhamet, 1992;Peng and Grano, in press;Rao and Finch, 1989), grinding method (Eric Forssberg et al, 1993) electrochemical effects, and control of the grinding environment especially the metal oxidation species produced on galena and oxidation-reduction state which in turn influence the potential range of subsequent flotation (Chander, 2003;Forssberg et al, 1988;Guy and Trahar, 1984;Martin et al, 1991;Peng et al, 2003a,b;Ralston, 1991). Calcium and sulphate ions are two very common components in the process water from flotation of sulphide minerals.…”

Section: Introductionmentioning

confidence: 99%

Recycling of process water in sulphide flotation: Effect of calcium and sulphate ions on flotation of galena

Ikumapayi

Mäkitalo

Johansson

et al. 2012

Minerals Engineering

142

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a b s t r a c tThe effects of major components of calcium and sulphate species present in recycled process water on galena flotation has been investigated through Hallimond flotation, zeta-potential, diffuse reflectance FTIR spectroscopy and XPS measurements using pure galena mineral. The significance of process water species in flotation has been understood using deionised water, process water and simulated tap water containing equivalent calcium and sulphate ions concentration as in process water.Hallimond flotation indicated marginally lower recoveries of galena in the presence of calcium and sulphate ions using potassium amyl xanthate as collector. Zeta-potential shows the adsorption of calcium ions whereby the potential are seen to increase while sulphate ions have no significant effect. FTIR and XPS studies revealed surface calcium carbonate and/or calcium sulphate species in process water which affected xanthate adsorption. Presence of surface oxidised species such as sulfoxy, hydroxyl species on galena at pH 10.5 in deionised and process water was also revealed.

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Section: Introductionmentioning

confidence: 99%

Recycling of process water in sulphide flotation: Effect of calcium and sulphate ions on flotation of galena

Ikumapayi

Mäkitalo

Johansson

et al. 2012

Minerals Engineering

142

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“…The use of NaHSO 3 as a flotation depressant [36,37] is being practiced in selective flotation of sulphide minerals. The depressing effect generally increases from copper sulphides to galena, pyrite and sphalerite [38].…”

Section: Flotation Selectivity Between Pyrite and Non-ferrous Sulphidesmentioning

confidence: 99%

Challenges in Sulphide Mineral Processing

Rao

2011

TOMPJ

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Scientists and technologists in world over are making large efforts to streamline the conventional technological schemes of ore processing, in particular froth flotation towards reducing overall costs, limiting the use of dangerous substances, decreasing waste streams and improving waste disposal. Hitherto, search for such innovations has been performed mainly empirically and there is an urgent need to shift these technologies to be more innovative and effective.Understanding of the fundamental concepts of aquatic chemistry of minerals-selective adsorption and selective redox reactions at mineral-solution interfaces would impact innovating conventional flotation process. Molecular-level knowledge and coherent understanding of minerals contacted with aqueous solutions is required which underlie great opportunities in controlling mineral-solution interfaces towards the grand challenge of tomorrow's science and mineral processing technology.Aqueous redox chemistry of sulphides and adsorption mechanisms, the problems of metal sulphides selectivity against pyrite and fine particle flotation have been highlighted and discussed in the light of literature. The requisite knowledge and research needs to address these issues have also been briefly presented.

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“…Sphalerite (ZnS) is a representative zinc-containing sulfide mineral, and it is the most important resource for zinc metal production. Sphalerite is normally found with other sulfide minerals such as galena, chalcopyrite, and pyrite in Pb-Zn deposits, and they are separated from each other by froth flotation [3][4][5]. Therefore, for many decades, many researchers have focused on the flotation behavior of sphalerite when it is separated from other sulfide minerals [2,[6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Pre-Concentration of Iron-Rich Sphalerite by Magnetic Separation

Jeong

Kim

2018

Minerals

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With the rise in metal prices and the growing importance of metallic minerals in the South Korean economy, there has been a steadily increasing demand to redevelop metal mines that have been shut down since the 1990s. However, it is not possible to ensure that such plans are economically feasible by using conventional mining processes, mainly flotation, because of low ore grade and complex mineral compositions. To improve the efficiency, and to reduce the operating cost of the entire process, pre-concentration by magnetic separation of Pb-Zn deposits has been investigated to reduce the mass and improve the grade of feed samples that are loaded into the flotation system. The results show that the response of sphalerite to magnetic separation varied as a function of its iron content: iron-rich sphalerite was recovered at magnetic intensities below 0.65 T, and relatively pure sphalerite was recovered at magnetic intensities above 0.85 T. Therefore, Pb-Zn ore could be sufficiently pre-concentrated by magnetic separation between 0.65 and 0.85 T to remove low-grade target elements. As a result, the mass of the sample fed into the flotation system was reduced almost by half, and the grade of zinc, lead, and copper was enhanced by 65%, 55%, and 33%, respectively. Therefore, it is possible to improve the efficiency of the entire process by reducing the amount of the sample to be fed to subsequent processes, such as grinding and flotation, while minimizing loss of the target mineral through magnetic separation.

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Influence of grinding method on complex sulphide ore flotation: a pilot plant study

Cited by 33 publications

References 5 publications

Recycling of process water in sulphide flotation: Effect of calcium and sulphate ions on flotation of galena

Recycling of process water in sulphide flotation: Effect of calcium and sulphate ions on flotation of galena

Challenges in Sulphide Mineral Processing

Pre-Concentration of Iron-Rich Sphalerite by Magnetic Separation

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