A review of copper–arsenic mineral removal from copper concentrates
Hintikka and Leppinen (1995) tested a copper-lead–zinc ore and reported that optimum flotation of copper from this ore was at about 0 mV SHE. Tests on a copper–gold ore containing arsenopyrite indicated arsenic recovery reached a maximum at +150 mV SHE and dropped off over +200 mV SHE. Copper recovery remained high, indicating a …
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Copper, Nickel and Iron-Containing Cobalt Ore …
When using the preferential flotation method to treat copper-cobalt ore, generally the copper is preferentially flotation and then cobalt, lime as the inhibitor, YK1-11 as the copper collector ...
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(PDF) EFFECT OF BLENDING VARIOUS COLLECTORS AT BULK FLOTATION OF COPPER
Differential flotation is employed in the treatment of the underground copper ore while bulk flotation is done on the open-pit cobalt ore. However, the underground copper circuit was characterised ...
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(PDF) Flotation of Nickel-Copper Sulphide Ore
The flotation by surface sulphidisation of the oxidized copper-cobalt-bearing ore from Kimpe (1.97% Cu; 0.66% Co) was studied in order to evaluate its behavior by the analysis of its most ...
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Geometallurgy of cobalt ores: A review
There is only limited information on the floatability of cobalt minerals, and most studies address the flotation of cobalt-containing ores as part of the flotation of …
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Differential flotation of pyrite and arsenopyrite: Effect of …
1. Introduction. Pyrite and arsenopyrite are the most important mineral phases in sulphide refractory gold ores due to their associative property in hosting gold and concomitant effect on gold extraction processes (Arehart et al., 1993, Asamoah et al., 2018a, Asamoah et al., 2019c, McCarthy et al., 2018, Zhang et al., 2016).Hydrometallurgical …
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Efficient flotation recovery of lead and zinc from refractory …
The conventional treatment of these types of mixed ores is differential froth flotation (Popli et al., 2018). Firstly, the mixed ores are treated by sulfide minerals flotation, and then oxide minerals are recovered from the tailing of the sulfide ore flotation stage. ... Novel approach for processing complex carbonate-rich copper-cobalt mixed ...
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Production of cobalt from copper-cobalt ores on the …
This second option, referred to as differential flotation, is achieved in two steps. The first step is bulk copper-cobalt flotation, followed in a second step in which the flotation of the cobalt minerals is suppressed.
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Copper-Cobalt ores
Two different flotation separation strategies are used. Differential flotation sequence: A differential copper-cobalt flotation separation which begins with selective copper …
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Froth Flotation (Sulphide & Oxide)
Pb misreporting during differential flotation. B. 1. REPLY. 174. VIEWS. Started by Beekay I would like assistance with the possible reasons for Pb is reporting to the Cu concentrate in a differential flotation circuit. This happens across 6 ore types. All the 6 ores contain much more Pb (assay 0.5-3wt%) in the feed than Cu (assay 0.01-01w ...
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a Sediment-Hosted Copper–Cobalt Sulphide Ore
limited studies into the processing of copper and cobalt sulphide minerals exist [6]. Within these deposits, carrollite (Cu2CoS4) is the main cobalt-bearing mineral in the sulphide ore and common copper sulphide minerals are bornite (Cu5FeS4), chalcopyrite (CuFeS2) and chalcocite (Cu2S). Flotation
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Cobalt Ore
Nickel and Cobalt Ores: Flotation☆ G.V. Rao, in Reference Module in Chemistry, Molecular Sciences and Chemical Engineering, 2014 Sulphidisation – Flotation of Oxide Copper-Cobalt Ores. Since cobalt is mostly recovered as by product, a typical case of cobalt recovery from oxide copper-cobalt ore from Kamwale deposit, located in Congo …
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(PDF) Flotation and Tailing Discarding of Copper …
The mineral composition of copper–cobalt ores is more complex than that of copper sulfides, and it is also difficult to discard tailing efficiently in primary flotation for …
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Author's personal copy
ores of copper and cobalt are stored in settling ponds in view separation of tailings and the mill wastewaters, which are sent in the rivers. ... assaying about 11% in copper. Flotation is a ...
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Cobalt Extraction Mechanisms | SpringerLink
For the latter, a differential flotation is carried out as follows : 1. Global flotation of copper–cobalt, from a pre-concentrate obtained by gravitational means. 2. …
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CHAPTER 7 FLOTATION OF SULPHIDE MINERALS
) are the two most commonly floated copper sulphide minerals. Bornite (Cu 5 FeS 4) and covellite (CuS) and energite (Cu 3 AsS 4) are normally present in lesser quantities. The complete flotation of chalcocite is achieved between ph = 1 to ph = 10 with ethyl xanthate. The resulting hydrophobic species is CuX. 1. Hydroxyl as depressant (OH-)
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Selective separation of chalcopyrite from pyrite with a …
The flotation separation of chalcopyrite and carrollite, the two primary copper and cobalt minerals in sedimentary copper-cobalt ores, has been less studied. In this paper, the role of xanthan gum (XG) as a depressor in the flotation separation of chalcopyrite and carrollite by a series of flotation tests, adsorption amount tests, zeta ...
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Production of copper and cobalt at Gecamines, Zaire
The flotation of copper is carried out by depressing zinc initially with the depressants sodium cyanide and zinc sulphate. Reactivation of the blend is obtained by the addition of copper sulphate. The flotation of zinc is carried out with xanthate and pine oil at pH ii. The schematic diagram of the differential flotation is shown in the Figure 5.
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Lime use and functionality in sulphide mineral flotation: A …
Ni and Ni-Cu sulphide ores. Nickel-copper sulphide ores can differ significantly in the mineralogy of both the sulphide and the gangue minerals. Pentlandite is the major source of nickel, and often carries with it cobalt or precious group elements in economic concentration. Vast pentlandite deposits are processed in Canada, Australia, …
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Copper activation option for a pentlandite–pyrrhotite–chalcopyrite ore
Introduction Different sulphide ores respond differently in the prospect of copper activation to thiols for froth flotation. With the BCL Selebi-Phikwe ore body, pentlandite–pyrrhotite–chalcopyrite co-occur and there is the constraint of fine pentlandite dissemination in the pyrrhotite, so that liberation is limited. In the presence of pentlandite, …
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The effect of polysaccharides and polyacrylamides on the …
The objective of this study was to identify new efficient domestic depressants for flotation-active silicates, selectively acting in the flotation of low-sulfide copper-nickel ore, in comparison ...
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Feasibility Study of Differential Flotation of Cu–Pb–Zn …
In this research, flotation of copper, lead and zinc minerals from a copper oxide–sulfide ore was studied. The identification tests showed that the sample is a mixture of quartz, chalcopyrite, galena, cerussite, hemimorphite and iron oxide minerals with 5.04% CuO, 1.61% PbO, 2.07% ZnO and 56.40% SiO2. The experimental design methodology …
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Solvent extraction of Cu, Mo, V, and U from leach solutions of copper …
During the preliminary stages of copper ore enrichment, significant amounts of flotation waste are generated. KGHM, since its inception, has been searching for a technology that is technically, economically and environmentally feasible for the economical usage of the waste from the flotation of copper ore [ 19 ].
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Flotation and Tailing Discarding of Copper Cobalt …
The obtained results are supposed to provide some theoretical reference to improve the efficiency of tailing discarding in primary bulk flotation and increase the …
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Nickel and Cobalt Ores: Flotation
Flotation of cobalt sulfide ores can be best achieved at acidic pH (~. 4) with xanthate collectors and at pH of about 7.5 for oxide ores with nitrosonaphthol chelating reagents, while their ...
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Recovery of nickel, copper and cobalt from low-grade …
For example, when flotation was applied to cobalt-containing tailings from Sivas-Divrigi iron ore concentrator in Turkey (Sirkeci et al., 2006) and flotation tailings of oxidized ores of copper ...
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19
The process involves two basic flotation methods: (a) fatty acid flotation of oxide copper minerals from siliceous ore, and (b) sulphidization of oxide copper minerals followed by …
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NICKEL AND COBALT ORES: FLOTATION
NICKEL AND COBALT ORES: FLOTATION G. V. Rao, Regional Research Laboratory, Council of Scientific and Industrial Research, Bhubaneswar, India ... contain very low grades of nickel (0.6%) and copper (0.04}0.4%). The easily Soatable non-sulRde min-erals dilute the grade of the concentrate and also ... The differential separation of pentlandite and
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Investigation of Flotation Conditions for Cobalt Recovery …
However, limited information is available on the floatability of cobalt minerals, as most studies consider the flotation of cobalt ores as part of the main metal, such as copper and nickel . Cobalt is an essential metal with a wide range of uses, and it is obtained from secondary sources in Turkey.
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Flotation of copper oxide minerals: A review
For copper ores with oxidation rates of up to 94%, flotation tests have been performed by sulfidization-xanthate flotation, 2,5-dithiol-1,3,4-thiodiazole flotation, and …
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