alkaline flotation of copper sulphide
Flotation of a copper sulphide ore from Okiep using . Flotation of a copper sulphide ore from Okiep using thiol collectors and their mixtures The Journal of The South African Institute of Mining and Metallurgy VOLUME 105 ...
Froth flotation cells to concentrate copper and nickel sulfide minerals, Falconbridge, Ontario. Froth flotation is a process for separating minerals from gangue by taking advantage of …
EFFECTS OF EDTA ON SELECTIVE FLOTATION OF SULPHIDE MINERALS Received Aprl 21, 2004; reviewed; accepted June 21, 2004 ... It is very well known that majority of copper ions added into alkaline solutions precipitate in the form of Cu(OH)2 (Fuerstenau and Fuerstenau 1982). Copper ... formation of copper sulphide rather than copper hydroxide as an ...
generally considered to be a slow floating sulphide, with the flotation rate for pentlandite being in between. It has also ... Interpreting the role of reagents in the flotation of platinum-bearing Merensky ores J.G. WIESE, M. BECKER, D.J. BRADSHAW and P.J. HARRIS ... the majority of the added copper, at these alkaline pH values, will be in …
A process for the flotation recovery of copper and nickel sulphide minerals from ores containing both such minerals by a process in which at least two-conditioning steps precede flotation, said process consisting essentially of; conditioning a pulp of the ore in the presence of at least one alkaline agent selected from the group consisting of ...
Optimization of Cu–Zn Massive Sulphide Flotation by Selective Reagents. Authors; Authors and affiliations ... Copper (II) activation and cyanide deactivation of zinc sulphide under madly alkaline conditions. Appl. Surf. Sci. 108 ... G. Hangone, D. Bradshaw, Z. Ekmekci, Flotation of a copper sulphide ore from Okiep using thiol collectors and ...
Beneficiation of Copper Sulfide by Flotation. Copper, due to the present world demand and price, is of foremost interest to the mining industry.Many new properties are either in the process of being brought into production or are being given consideration.
A brief review of pulp potentials in sulfide flotation S. Chander * Mineral Processing Section, Department of Energy and Geo-Environmental Engineering, The Pennsylvania State University,
to leach copper, silver and gold (and a few other base/precious metals) from their ores, concentrates, tailings, wastes and process intermediates. • It is the only known benign alkaline leach system which allows the
Possibility of sodium cyanide elimination from a flotation process . Ahmad K. CDarban. 1. ... floating in alkaline solutions (lime), using highly ... strong depressants in selective flotation of sulphide minerals, and they have attracted considerable attention through experiments . For example, Liu
oxide and sulphide minerals, as the sulphides are usually heavily depressed by the sulphide ions from NaHS additions necessary to sulphidise the oxide copper.
The Journal of The South African Institute of Mining and Metallurgy VOLUME 105 NON-REFEREED PAPER MARCH 2005 199 Introduction Thiol collectors are used in the froth flotation of copper sulphide …
be a slow floating sulphide, with the flotation ... copper hydroxide precipitation in alkaline Interpreting the role of reagents in the flotation of platinum-bearing Merensky ores by …
The ethylxanthate adsorption on copper-activated sphalerite under flotation-related conditions in alkaline media. ... (1980b) have studied adsorption and adsorption ki- netics of heavy metal ions on zinc sulphide in alkaline media and have pro- posed the slow surface exchange reaction between M (OH)2 and ZnS. ...
optimum conditions for the flotation of nickel, copper and cobalt from a nickel-copper sulphide ore. The parameters investigated include collector dosage, percentage solids, depressant dosage and pH.
Dec 26, 2017· Greening Chilean copper mining operations through industrial . Rougher flotation of copper sulphide ores using biosolids e from wastewater . and modifiers in froth flotation is increasing because higher amounts of .. the pH at 10, and 12 g/t of diesel …
Reaction Time = 30 minutes Table XIV.-Alkaline Sulfide Recovery With NSC Partial Sulfide Oxidation Alkaline Sulfide Au Leach Recovery = 93.3 % Moreover, NSC partial sulfide oxidation pressure leaching followed by alkaline sulfide gold leaching and recovery is an advantageous application for treatment of copper sulfide gold ores and concentrates.
Effect of pH on the Recovery and Grade of Base Metal Sulphides (PGMs) by Flotation ... treated. For example: the cost of lime in sulphide minerals flotation is roughly double the amount of the collector used, ... their selective flotation from lead or copper …
Investigation of the selectivity of ethoxylcarbonyl thionocarbametes during the flotation of copper sulfides G. Liu, H. Zhong and T. Dai ... against iron sulfide minerals at slightly alkaline conditions. The lowest unoccupied molecular orbit (LUMO) of ECTC, ... flotation of copper/iron sulfide …
The flotation of the polymetallic sulfide ore of copper, lead, and zinc is generally suitable at alkaline pH conditions. Lime and soda are common agents used in adjusting the pH of the slurry. These agents were used and the effects of
Copper Sulfide Flotation - Mineral Processing & … Beneficiation of Copper Sulfide by Flotation. Copper, due to the present world demand and price, is of foremost interest to the mining industry.
Copper Sulfide Mineral Flotation. The discovery of base metals such as copper, zinc, ... pH control is necessary in the flotation tanks. The copper ore slurry from the grinding mills is mixed with ...
underground and/or open pit mining and copper concentration via flotation processing. It is further ... centers on the fate of pyrite (Fuerstenau et al. 2007). Traditionally, alkaline and acidic tailings were ... The gold in disseminated copper deposits is partitioned among the copper-sulfide minerals (chalcopyrite, bornite, chalcocite ...
Copper(II) activation, at an equivalent surface coverage of one monolayer, results in a copper-substituted zinc sulphide surface, whereas at surface coverages of ten or more equivalent copper(II) monolayers a copper(II) hydroxide surface phase covers the underlying copper-substituted zinc sulphide phases.
Introduction to Mineral Processing. ... is pumped to the molybdenum plant where the molybdenum disulfide is separated from the copper sulfide. Chemicals referred to as depressants are added to the pulp to reduce the flotation of the copper minerals while allowing the molybdenum minerals to float. The tailings from the molybdenum plant are the ...
Stage 2: Froth flotation The powdered ore is mixed with a special paraffin oil which makes the copper mineral particles water repellent. It is then fed into a bath of water containing a foaming agent which produces a kind of bubble bath. ... Formation of blister copper by reduction of copper sulfide:
Aug 03, 1971· A process for the flotation recovery of copper and nickel sulphide minerals from ores containing both such minerals by a process in which at least two-conditioning steps precede flotation, said process consisting essentially of; conditioning a pulp of the ore in the presence of at least one alkaline agent selected from the group consisting of ...
Effect of pH on the Recovery and Grade of Base Metal Sulphides (PGMs) by Flotation ... treated. For example: the cost of lime in sulphide minerals flotation is roughly double the amount of the collector used, ... their selective flotation from lead or copper minerals. Since
ABSTRACTOne of the principal problems in flotation of copper complex ores is the presence of pyrite and copper-activated pyrite in moderately alkaline pHs. Misreported pyrite into copper concentrates dramatically declines copper grade and its recovery. In this study, the effect of sodium sulfide, sodium metabisulfite (SMBS), and their dosages (100, 200, 300, and 400 g/t) were investigated on ...
The problem of the flotation of sulphide fines results colloidal size range because of the dispersal of fibrous from a number of contributory factors that are not clay minerals. Our study with natural hematit~, in …
PROCESS OPTIMISATION OF MIXED COPPER ORES THROUGH REAL-TIME MINERALOGICAL ANALYSES Paquot, F.X.*, ... ores are either treated through standard sulphide flotation, sulphidisation or flotation followed by acid leaching. The ... base metals industry and is aimed at optimising the recovery of copper in the flotation circuit. 1. Background
453 Acid leaching of oxide–sulfide copper ore prior the flotation – A way for an increased metal recovery Miroslav D. Sokić1, Vladan D. Milošević1, Velizar D. Stanković2, Vladislav Lj.Matković1, Branislav R. Marković1 1Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia 2University of Belgrade, Technical Faculty, Bor, Serbia
Froth flotation cells to concentrate copper and nickel sulfide minerals, Falconbridge, Ontario. Froth flotation is a process for separating minerals from gangue by taking advantage of differences in their hydrophobicity .
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