Advances in Ni-Cu-PGE Sulphide Deposit Models and Implications for Exploration Technologies Lightfoot, P. C. [1] 1. CVRD Exploration Canada Inc., Cliff, Ontario, Canada

The flotation separation of Cu-Fe sulfide minerals at low alkalinity can be achieved using selective depressants. In the flotation system of Cu-Fe sulfide minerals, depressants usually ...

The most relevant and current findings of nanotechnology-based research in the domain of mineral processing and a concise overview of recent advances in the application of nanotechnology for improved mineral recovery using froth flotation technology is reported.

The problems of the flotation of sulphide minerals in papers presented at the Complex sulphide ores conference (organized by The Institution of Mining and Metallurgy and held in Rome, Italy, in ...

Note that, due to the fine-grained nature of the primary and secondary copper sulphides, and due to the known incomplete liberation of these across the MF2 platform, it was the expectation that a successful new reagent formulation would increase the copper recovery and drop the concentrate grade due to successful middling particle …

A theoretical analysis was conducted to study the role of collectors and depressants in flotation, based on the extended Derjaguin–Landau–Verwey–Overbeek (DLVO) theory, where the hydrophobic ...

1. Introduction1.1.. ContextIn the practice of sulphide ore milling and flotation, the loss of paymetal(s) to flotation tailings is the largest loss of all unit processes in the flowsheet by which saleable metal is produced (Cramer, 2001).These losses can arise from various sources, ranging from inadequate process conditions to circuit and operational …

Reports on the use of polysaccharides in the differential flotation of sulphides are scarce and have not led to the development of the consistent theory that could explain their mode of adsorption. The known facts about adsorption of dextrin onto a number of minerals are summarized to provide evidence for the chemical mechanism of …

Otherwise, slow cooling with less oxygen would further advance the formation of a graphitic sheet on the molten surface. Flotation of Kish graphite contained in the flue dust has been investigated way back in 1991 by Wakamatsu and Numatai [85]. The parameters of surface phenomenon such as contact angle, wettability etc with respect to …

The flotation separation of Cu–Fe sulfide minerals at low alkalinity can be achieved using selective depressants. In the flotation system of Cu–Fe sulfide minerals, depressants usually preferentially interact with the pyrite surface to render the mineral surface hydrophilic and hinder the adsorption of the collector. This review summarizes …

DOI: 10.1007/s12613-023-2709-3 Corpus ID: 267287170; Advances in depressants for flotation separation of Cu-Fe sulfide minerals at low alkalinity: A critical review @article{Feng2024AdvancesID, title={Advances in depressants for flotation separation of Cu-Fe sulfide minerals at low alkalinity: A critical review}, author={Qicheng …

The study of ore minerals is rapidly transforming due to an explosion of new micro- and nano-analytical technologies. These advanced microbeam techniques can expose the physical and chemical character of ore minerals at ever-better spatial resolution and analytical precision. The insights that can be obtained from ten of today's most …

An improved understanding of the geological processes related to sulfide melt transport in mafic magmas will underpin advances in the exploration, characterization, and processing of critical metal …

Sulfide flotation refers to the electrochemical process in which sulfide minerals are recovered by froth flotation, involving the transfer of electrons between different sulfide …

It was found that controlled pulp potential (Eh) flotation is a prospective approach to promote the separation of arsenic-copper minerals from other copper sulphides due to the strong Eh ...

a finely disseminated nature, most of the loss in the important role in determining the flotation of fines of . flotation of the 8SOfo -44-jlm feed is in the -Si.lm size these minerals. fraction.1 The problem of loss of finely disseminated " values during the processing of sulphides has been ~-'[MA11( ~ROP£R11£S OF FIN[S

Technological Advances: Nickel Sulphides: Traditional mining methods and flotation processes are well-established for nickel sulphides. Ongoing technological advancements in exploration, mining, and processing contribute to the continuous improvement of efficiency and environmental performance.

An attempt is made to resolve anomalies in the published results and theories, and to suggest directions which further work should take so as to advance understanding of the processes and to improve performance in the selective flotation of sulphide ores. 1997 Elsevier Science B.V. Keywords: activation; flotation; sulphide …

Adsorption and depression mechanism of an environmentally friendly reagent in differential flotation of Cu–Fe sulphides. September 2019; Journal of Materials Research and Technology 8(6)

advances in sulphides flotation . Sulphidisation of oxides and oxidised sulphides and. 2022.7.1 Sulphidisation, an electrochemical process for conversion of a non-sulphide, oxide or oxidised sulphide, to a sulphide surface that facilitates efficient adsorption of thiol collectors to impart hydrophobicity, offers a way to improve the enrichment ...

The formulation and use of mixed collector suites in sulphide flotation can be traced back as far as 1957 with the work of Glembottskii and his co-workers in …

the flotation response of sulphide minerals in the absence of collectors and under certain conditions is now well documented.lO Mildly oxidizing environments render some …

Formation of calcium sulphate (gypsum) by the interaction of calcium ions with sulphate ions in the pulp produces fines slime coatings on the sulphide minerals …

Pyrite and galena flotation with KEX had recoveries greater than 90% for each mineral (pH = 8). After adding chitosan (0.67 mg/L), the pyrite recovery decreased to 23% (pH 4−9). In a flotation with mixtures of pyrite and galena, the recovery of galena was much higher than separately, concluding that chitosan is preferentially adsorbed on pyrite.

It is likely that well-designed mixtures of collectors may more successfully cover the full range of sulphides. Alternatively, if certain sulphides such as pyrite or pyrrhotite are particularly important to paymetal recovery because of their solid solution hosting of precious metals such as gold (pyrite) or platinum (pyrrhotite), then the catalytic

It is similar to dump leaching. It is mostly used for ores that have fine sizes, but still too coarse for flotation. Pipes are inserted to supply sufficient O 2 in different locations in the heap. Download: Download high-res image (161KB) Download: Download full-size image; Fig. 2. A schematic illustration of a heap leaching process for copper ore.

Specific flotation separations are as follows.•Copper sulphides such as chalcocite and copper oxides such as cuprite could be floated from enargite at pH 11 after setting the potential to about ...

Semantic Scholar extracted view of "The critical degree of bornite surface oxidation in flotation" by T. Moimane et al. Skip to search form ... Sulphidisation of oxides and oxidised sulphides and adsorption of thiol collectors on the sulphidised products-a critical review. ... Materials Science. Advances in colloid and interface science. 2022 ...

Reflects most recent advances in surface chemistry; Points to industrial applications; 12k Accesses. 38 Citations. Buy print copy. Hardcover Book USD 109.99 . ... Behaviour and mechanism of collectorless and collector-induced flotation of sulphide minerals in various flotation systems are also discussed. The example of electrochemical flotation ...

Surface oxidation of the sulfide minerals negatively affects the flotation performance, i.e., the selectivity and even the recoveries at heavy oxidation conditions. Oxidation may take place during the …