Flotation of mixed copper oxide and sulphide minerals
Flotation of mixed copper oxide and sulphide minerals with xanthate and hydroxamate collectors 1. Introduction. Many copper sulphide mines around the world have significant copper oxide ore reserves associated with 2. Experimental methods. In this paper, the surface properties of copper oxide minerals and their effects on the mineral flotation behavior are systematically summarized. The flotation Flotation of mixed copper oxide and sulphide minerals
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[PDF] Flotation of mixed copper oxide and sulphide minerals with
Flotation of mixed oxide sulphide copper-cobalt minerals using xanthate, dithiophosphate, thiocarbamate and blended collectors Laurens T. Tijsseling Q. Dehaine In this study, a bulk sample of Cu-Co mixed oxide/sulphide ore from a major DRC operation is characterised and tested for flotation. The effectiveness and Flotation of mixed oxide sulphide copper-cobalt minerals
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Flotation of mixed copper oxide and sulphide minerals with
1. Introduction Many copper sulphide mines around the world have significant copper oxide ore reserves associated with the larger primary cop- per sulphide deposit. The The copper sulphides present in the blend were bornite and chalcopyrite, while the oxides were malachite and minor azurite.From previous flotation investigations Flotation of mixed copper oxide and sulphide minerals
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Flotation of mixed oxide sulphide copper-cobalt minerals using
This study investigates the flotation behaviour of a mixed oxide-sulphide ore where copper is hosted in sulphides phases such as bornite, chalcopyrite and chalcocite, and Copper is most commonly present in the earth’s crust as copper-iron-sulphide and copper sulphide minerals, for example, chalcopyrite (CuFeS2), bornite (Cu5FeS4) and chalcocite (Cu2S)....A Review of the Flotation of Copper Minerals
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Development and optimization of mixed
SYNOPSIS The Kansanshi Mine (First Quantum Minerals Ltd) treats a mixed sulphide/oxide copper-gold vein deposit. Until June 2009, the sulphide and oxide minerals were respectively recovered by the well DOI: 10.1016/J.MINENG.2019.04.022 Corpus ID: 191131616; Flotation of mixed oxide sulphide copper-cobalt minerals using xanthate, dithiophosphate, thiocarbamate and blended collectorsFlotation of mixed oxide sulphide copper-cobalt minerals
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Tetrazinan-thione collectors for copper oxide mineral: Synthesis
Novel tetrazinan-thione compounds including 6-hexyl-1,2,4,5-tetrazinan-3-thione (HTT), 6-propyl-1,2,4,5-tetrazinan-3-thione (PrTT) and 6-phenyl-1,2,4,5-tetrazinan-3-thione (PhTT) were synthesized and originally introduced as collectors for beneficiation of copper oxide mineral. The micro-flotation investigations exhibited that HTT achieved The objective of this study was to investigate the floatability of a complex Kansanshi mixed copper ore with a special focus on the sulphidisation process. Controlled potential sulphidisation (CPS) is preferred over slug sulphidisation as the industry standard for the flotation of oxide copper minerals. Two potential ranges were investigated inThe recovery of oxide copper minerals from a complex copper
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Identification of copper-sulfide species on the cuprite surface
With the gradual depletion of copper sulfide resources, efficient flotation technologies for the recovery of copper oxide minerals, such as malachite, have received significant attention. Although sulfidization plays a critical role in malachite flotation, the fundamental theory of sulfidization flotation remains uncertain in the context of practical Until June 2009, the sulphide and oxide minerals were respectively recovered by the well established xanthate flotation of sulphides and acid leaching of soluble oxide copper. The mixed (transitional) sulphide/oxide ores were stockpiled in the absence of an economic processing route due to their poor flotation response and high gangue acid consumption.Development and optimization of mixed sulphide/oxide copper
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(PDF) Flotation of mixed oxide sulphide copper-cobalt minerals
Flotation of mixed oxide sulphide copper-cobalt minerals using xanthate, dithiophosphate, thiocarbamate and blended collectors May 2019 Minerals Engineering 138(July 2019):246-256The 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, Minerals Free Full-Text Parametric Optimization in Rougher
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Relationship between ore mineralogy and copper recovery across
Sulphide, oxide, and mixed ore are fed to separate mineral processing circuits tailored for recovery of the dominant copper minerals in each. After comminution to a target grind size of 80% passing 150 um, each ore type is subjected to flotation to recover the copper sulphide minerals (chalcopyrite, bornite, chalcocite, covellite).The preferred method for the flotation of oxide and mixed copper ores is sulphidisation. The reagents are typically sodium sulphide (Na2 S) and sodium hydrosulphide (NaHS). Slug sulphidisation, which uses a single slug dose, is generally not preferred because the difficulty in controlling the pulp potential leads to poor mineral The recovery of oxide copper minerals from a complex copper
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The recovery of oxide copper minerals from a complex copper
Flotation of mixed oxide sulphide copper-cobalt minerals using xanthate, dithiophosphate, thiocarbamate and blended collectors Laurens T. Tijsseling Q. Dehaine G. Rollinson H. Glass Materials Science, GeologyN-octyl hydroxamate collectors such as AM28 can be used successfully to recover the oxide mineral component in mixed copper sulphide/oxide blends without reducing the recovery of the sulphide minerals. This investigation showed that for a Minto composite blend of 70 wt% sulphide and 30 wt% oxide, the rougher scavenger copper recovery was 95.5%.Flotation of Mixed Copper Oxide and Sulphide Minerals With Scribd
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Hydroxamate Collectors 911 Metallurgist
Hydroxamate Collectors. Let me point you to two good papers on the flotation of mixed copper oxide and sulphide minerals with xanthate and hydroxamate collectors. A great detailed thesis The classical method used to concentrate oxide copper-bearing ore is CPS. Sulfidisation is a process whereby a non-sulfide mineral surface is converted to a sulfide-like surface. Commonly used sulfidising agents include: sodium hydrogen sulfide (NaHS), sodium sulfide (Na 2 S) and ammonium sulfide ((NH 4) 2 S) (Lee et al., 2009).Investigation into the mineralogy and flotation performance of
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Flotation of mixed oxide sulphide copper-cobalt minerals
extremely difficult. This study investigates the flotation behaviour of a mixed oxide-sulphide ore where copper is hosted in sulphides phases such as bornite, chalcopyrite and chalcocite, and oxide phases such as malachite and to a lesser extent chrysocolla. Three cobalt-bearing oxide minerals are observed in the mixed ore, i.e.hetero-Complex Cu-Co mixed oxide-sulphide ore are usually processed through a sulphide flotation stage followed by an oxide flotation stage using Controlled Potential Sulphidisation (CPS) flotation. Major challenges associated with this processing route are the relatively low recovery of cobalt oxide minerals and the high concentration of Novel approach for processing complex carbonate-rich copper
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Sulphidisation of oxides and oxidised sulphides and
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 of oxide and oxidised sulphide ores by flotation.Although it has shown Until June 2009, the sulphide and oxide minerals were respectively recovered by the well established xanthate flotation of sulphides and acid leaching of soluble oxide copper. The mixedTest Works on Concentrate Grade Improvement using Mineral Depressants
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PGM extraction from oxidized ores using flotation and leaching
Characterization of the PGM ore used in this study indicated that it was enriched in oxide minerals as a result of weathering and therefore oxidic. The maximum PGM flotation recovery achieved using sulphide co-collector schemes was 55.1% 3E (Pt, Pd, and Au). Application of the hydroxamate oxide collector improved the flotation recovery to 74.7% Hydrophobicity of copper can be enhanced by the addition of generic collectors for sulphide minerals such as xanthate and dithiophosphates or specific collector for oxide copper minerals such as hydroxamate etc. Thiol collectors were used in the froth flotation of copper sulphide from the slag.Flotation of copper sulphide from copper smelter slag using
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An evaluation of hydroxamate collectors for malachite flotation
Copper oxide minerals, such as malachite, do not often respond well to traditional copper sulphide collectors, and require alternative flotation schemes. Hydroxamic acid collectors have been suggested as a means to directly float malachite; however, there is limited information on the effect of reagent structure on the
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