Metal recovery from old tailings

Evdokimov, S. I.; Evdokimov, V. S.

doi:10.1134/s1062739114040206

Cited by 11 publications

(7 citation statements)

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“…Tailings have untapped potential in several proven applications such as metal recovery (Evdokimov and Evdokimov 2015;Falagán et al 2017;Alcalde et al 2018), alkali activated Materials (Moukannaa et al 2019;Dabbebi et al 2020;Perumal et al 2020Perumal et al , 2021b and several other applications (Solismaa et al 2018;Wang et al 2019;Perumal et al 2021a;Ramanathan et al 2021). Properties of mine tailings vary with the mineralogy of the ore deposit extracted and the method of refinement (or) processing adopted during mineral separation (Kinnunen et al 2018;Perumal et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Management and valorization of phosphate beneficiation slime: a critical review

Dabbebi

Perumal

Moukannaa

2023

Int. J. Environ. Sci. Technol.

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The valorization of phosphate mine waste (PMW) in different fields has recently become attractive to many researchers. This review paper examines the potential use of PMW as a raw material in different applications toward sustainable management strategies. Dewatering, recovery of phosphate and heavy metals, building materials and ceramics applications have been captured in this paper. Based on the origin of deposit and the treatment during ore beneficiation, the PMW shows different mineral compositions and various percentage of chemical elements which make it suitable for most of the studied applications. The objective of this paper is to show the potential of the phosphate mine waste valorization and to identify the knowledge gap.

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Section: Introductionmentioning

confidence: 99%

Management and valorization of phosphate beneficiation slime: a critical review

Dabbebi

Perumal

Moukannaa

2023

Int. J. Environ. Sci. Technol.

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“…This makes old tailings or tailings originating from processing facilities with a non-homogeneous ore feed or with a non-homogeneous copper mineralogy (both factors are harmful for a good recovery) optimal targets for a possible economic reprocessing. Due to weathering, reprocessing is often more cost-intensive compared to primary ore processing, as described by [9] and references therein, for Russia. As tailings have already been floated once, re-flotation in some cases is possible [10], but can result in low recoveries because of non-floatable minerals or very fine grain sizes.…”

Section: Introductionmentioning

confidence: 99%

“…This is especially the case, as the grade of valuable elements in the tailings is not of value, but the recoverable grade-as for any orebody. In the case of tailings, which are influenced by weathering over years or decades, the mineralogy can change due to the climate and make the recovery more challenging [9,19]. Especially a mixture of sulfide and oxide minerals is difficult to process, as a combination of sulfide and oxide flotation or a combination of leaching and flotation have to be applied.…”

Section: Introductionmentioning

confidence: 99%

Processing Tests, Adjusted Cost Models and the Economies of Reprocessing Copper Mine Tailings in Chile

Drobe

Haubrich

Gajardo³

et al. 2021

Metals

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To increase resource efficiency, mining residues–especially tailings–have come into the focus of research, companies, and politics. Tailings still contain varying amounts of unextracted elements of value and minerals that were not of economic interest during production. As for primary mineral deposits, only a small share of tailings offers the possibility for an economic reprocessing. To minimize exploration expenditure, a stepwise process is followed during exploration, to estimate the likelihood of a project to become a mine or in this case a reprocessing facility. During this process, costs are continuously estimated at least in an order of magnitude. Reprocessing flowsheets for copper mine tailings in Chile were developed and costs and revenues of possible products from reprocessing were examined for a rough economic assessment. Standard cost models with capex and opex for flotation, leaching, and magnetic separation were adopted to the needs of tailings reprocessing. A copper tailing (around 2 M t) that also contains magnetite was chosen as a case study. A combination of magnetic separation and leaching gave the best economic results for copper and magnetite. The adopted cost models showed positive results at this early stage of investigation (semi-technical scale processing tests).

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“…For example, re-processing of tailings in the Picher mining district, where Al, Ti, Pb and Zn occur in fine tailings particles and mill tailings, was found to be feasible for recovery at 2013 prices for the listed elements [19]. In another study, the Unalsky tailings were investigated and showed good recoverability for Pb, Zn, Cu, Fe and Au using hydrometallurgy metal extractions [20]. More recent studies have started to focus on the application of different mine wastes in industry, such as the use of both tailings and waste rock for metal extraction and as an additive in soils [21].…”

Section: Introductionmentioning

confidence: 99%

Geochemical and Mineralogical Characterisation of Historic Zn–Pb Mine Waste, Plombières, East Belgium

et al. 2020

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Mine wastes and tailings derived from historical processing may contain significant contents of valuable metals due to processing being less efficient in the past. The Plombières tailings pond in eastern Belgium was selected as a case study to determine mineralogical and geochemical characteristics of the different mine waste materials found at the site. Four types of material were classified: soil, metallurgical waste, brown tailings and yellow tailings. The distribution of the mine wastes was investigated with drill holes, pit-holes and geophysical methods. Samples of the materials were assessed with grain size analysis, and mineralogical and geochemical techniques. The mine wastes dominantly consist of SiO2, Al2O3 and Fe2O3. The cover material, comprising soil and metallurgical waste is highly heterogeneous in terms of mineralogy, geochemistry and grain size. The metallurgical waste has a high concentration of metals (Zn: 0.1 to 24 wt.% and Pb: 0.1 to 10.1 wt.%). In the tailings materials, Pb and Zn vary from 10 ppm to 8.5 wt.% and from 51 ppm to 4 wt.%, respectively. The mining wastes comprises mainly quartz, amorphous phases and phyllosilicates, with minor contents of Fe-oxide and Pb- and Zn-bearing minerals. Based on the mineralogical and geochemical properties, the different potential applications of the four waste material types were determined. Additionally, the theoretical economic potential of Pb and Zn in the mine wastes was estimated.

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Metal recovery from old tailings

Cited by 11 publications

References 0 publications

Management and valorization of phosphate beneficiation slime: a critical review

Management and valorization of phosphate beneficiation slime: a critical review

Processing Tests, Adjusted Cost Models and the Economies of Reprocessing Copper Mine Tailings in Chile

Geochemical and Mineralogical Characterisation of Historic Zn–Pb Mine Waste, Plombières, East Belgium

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