alkaline flotation of copper sulphide

Oxidative weathering of a copper sulphide ore and its ...

Table 5 presents the first order flotation rate constant, the maximum theoretical flotation recovery, and the coefficient of variation of the rate constant, obtained from the data of rougher flotation of a copper sulphide ore with 10% (w/w) biosolids, 1.5% (w/w) salt of humic acids, and a mixture of conventional collectors and frothers used in the

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Copper Sulphide Ore Reagents For Copper Flotation

Jun 16, 2014· The flotation machine is used for the separation of the nonferrous black metal as well as the separation of the non-metallic materials such as the coal fluor...

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Experiment: The flotation cell - Free ZIMSEC & Cambridge ...

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).

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Oxidative weathering of a copper sulphide ore and its ...

About 90% of world copper production is produced pyrometallurgically from sulphide-based copper minerals, with the remainder from oxide-based copper minerals (Ayres . et al, 2002, Davenport . et al, 2002). Among the copper sulphide minerals, the main one is chalcopyrite (CuFeS. 2) comprising 50% of total copper production (CDAA, 2012).

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Froth Flotation of Copper - YouTube

The electrochemical behaviour of copper in NaHCO3 solution (pH 9) and NaOH solutions (pH 14) in the presence of sodium sulphide (10−3 to 5×10−2m) was investigated by using rotating disc electrode and rotating ring-disc techniques, triangular potential scanning voltammetry and potentiostatic steps. When the potential increases from −1.2V upwards, copper sulphide layers are firstly formed ...

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(PDF) A Review of the Flotation of Copper Minerals

12.00 Sulphidisation and flotation of oxidised copper sulphides ... (The University of Queensland, Australia) 12.15 Effect of hydrogen peroxide on the separation of copper sulfide minerals and arsenic-bearing copper minerals using ... 15.45 Hydrophobic behavior of fluorite surface at alkaline solution and the application in flotation ...

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The Effect of Oxidation on the Flotation Behaviour of ...

Four iron-sulphide-containing gold ores from the White Mountain mine in the Jilin Province, China were studied to examine the benefits of using oxidative treatment prior to conventional cyanidation to leach gold. This pre-treatment consisted of bubbling air into an ore/water mixture for eight hours while adding enough caustic sodium hydroxide to maintain a pH of 11 throughout the test. Three ...

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Mining Industry | Copper Sulfide Ore and Flotation Process ...

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 ...

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floatation of copper sulphide ore

The reagent schemes used for the treatment of complex sulfide copper ores are much more diverse and are designed to cope with specific problems associated with processing the ore. When treating hypogene sulfide copper ores, the reagent scheme is relatively simple. It uses xanthate as a collector in alkaline …

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CA2945354A1 - Depression of copper and iron sulfides in ...

Copper Sulfide Flotation - Mineral Processing Metallurgy. Sulphide copper ores generally occur with pyrite, pyrrhotite, arsenopyrite and molybdenite, and with gold and silver. A complete copper-iron separation may not always be essential for the maximum economic recovery and often is tied to the distribution of the gold and silver values.

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Oxidative weathering of a copper sulphide ore and its ...

Flotation of sulphide fines results, using CRF technique and HIC combined (CRF–HIC), were compared with a ''standardized" mill laboratory procedure. Concentrate copper recoveries were of the order of 7– 18 per cent higher and their process kinetics …

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Flotation of copper sulphides assisted by high intensity ...

Oxidative weathering of a copper sulphide ore and its influence on pulp chemistry and flotation S. Jacquesa,⇑, C.J. Greetb, D. Bastinc a Magotteaux Andino SA, Panamericana Norte Km. 37 S/N, Til-Til, Santiago, Chile bMinerals Processing Research, Magotteaux Australia Pty Ltd, PO Box 54, Mansfield Park, SA 5012, Australia cUniversity of Liège, Laboratory of Minerals Engineering and ...

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A study on selective flotation in low and high pyritic ...

US3844303A US31454072A US3844303A US 3844303 A US3844303 A US 3844303A US 31454072 A US31454072 A US 31454072A US 3844303 A US3844303 A US 3844303A Authority US United States Prior art keywords flotation alkalinity pulp circuit electrical conductivity Prior art date 1972-12-13 Legal status (The legal status is an assumption and is not a legal conclusion.

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(PDF) BULK FLOTATION OF COMPLEX COPPER ORE | Khmer Lee ...

Cu2+ in copper sulphate form is known as a sphalerite activator, and Zn recovery by flotation is enhanced by increasing concen-trations of Cu2+ ions in synthetic water (Bıçak et al., 2012). Cu2+ can also enhance the recovery of galena, chalcopyrite, and pyrite (Coetzer et al., 2003). However, the effect of increasing copper concentration on ...

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Copper ore flotation process - YouTube

A method of depressing copper sulfides and iron sulfides in a molybdenite floatation recovery process uses alkaline or alkaline earth potysulftdes at high concentrate pH. The method of enriching molybdenite content from a slurry having molybdenite and at least one of iron sulfides and copper sulfides can include the steps of adding an effective amount of a depressing reagent selected from one ...

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Lime use and functionality in sulphide mineral flotation ...

Flotation experiments on zinc sulfide minerals (and related surface detection experiments) reported by Boulton, Mirnezami, and Fornasiero et al. all confirm that excessively high concentrations of copper sulfate under alkaline conditions cause depression of zinc sulfide minerals because of the adsorption of large amounts of copper hydroxide.

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Method of flotation of sulfide copper-zinc ores

Copper is recovered by Froth Flotation in the mini float plant. Standard rougher and cleaner circuit. Nice clean metallurgy from the 1% copper rock.

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v115n12a14 The influence of water quality on the flotation ...

Cu2+ in copper sulphate form is known as a sphalerite activator, and Zn recovery by flotation is enhanced by increasing concen-trations of Cu2+ ions in synthetic water (Bıçak et al., 2012). Cu2+ can also enhance the recovery of galena, chalcopyrite, and pyrite (Coetzer et al., 2003). However, the effect of increasing copper concentration on ...

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Biogenic Sulphide Reagent in Hydrometallurgy

alkaline range via the reaction of Cu2+ with surface sulphur sites to the reduced form Cu+ together with an over layer of colloidal Cu(OH)2. In the classical understanding of the activation process, the copper ions are added to the system initially to allow the adsorption of the copper ions on the surface of the sulphide minerals.

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(PDF) A Review of the Flotation of Copper Minerals

alkaline range via the reaction of Cu2+ with surface sulphur sites to the reduced form Cu+ together with an over layer of colloidal Cu(OH)2. In the classical understanding of the activation process, the copper ions are added to the system initially to allow the adsorption of the copper ions on the surface of the sulphide minerals.

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Minerals | Free Full-Text | Effect of Ammonium Chloride on ...

1 Types of copper sulfide ore (1) Single copper mineral Its ore characteristic is relatively simple, and the only useful component that can be recycled is copper. The gangue minerals are mainly quartz, carbonate and silicate. (2) Copper-sulfur ore Called copper-bearing pyrite. In addition to copper minerals, iron sulfide can be recovered, and the main mineral of sulfur is pyrite.

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Sulfide Ore Flowsheet - vansteigerplanken.nl

surface chemical reactions in sulphide flotation. Sulphide minerals are subject to increasing surface oxidation ... followed by copper sulphate addition to facilitate the activation ... separation which is accomplished by column flotation in a highly alkaline pulp using lime (pH: 12) and sodium cyanide.

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