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 the fine-grained disseminated of ore. In this work, a mineral liberation analyzer (MLA) was employed to study the characteristics of minerals. As a significant mineralogical …
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The thickener underflow at 28% solids is effectively metered to the flotation section by a Adjustable Stroke Diaphragm Pump. All reclaimed water from the thickener overflow is pumped to a constant …
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In the concentrate obtained using cleaner flotation tests, the Co grade increased to 0.49% and Co recovery increased to 90.56%. These results show that froth …
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A mixed cobalt concentrate containing 10% Co could be obtained by combination of gravity and flotation from a feed containing 0.9% Co. ... Mpoyo, M. Improving the Efficiency of Oxide Copper-Cobalt Ores Flotation by Combination of Sulphidisers. Min. Eng. 2003, 16, 1023–1026, with permission from Elsevier Science. Read more. View chapter ...
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flotation step to the cleaner-scavenger s tage to produce a relatively cobalt-rich p yrite concentrate. The major chal lenge arises as a consequence of the low grade and the solid-solution nature ...
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This laboratory-scale investigation demonstrated the feasibility of using a combination precipitation-solvent extraction approach to the recovery of cobalt, copper, …
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The closed-circuit flotation test of copper/lead bulk concentrate shows that the grade and recovery of Cu reach 30.47% and 89.16% respectively and those of Pb reach 2.06% and1.58% respectively in ...
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Collector dosage optimisation suggests that 30 g/t DTP allowed to reach maximum recoveries for copper and cobalt of 94.2 % and 84.1 %, respectively, with concentrate grades of 25.8 % Cu and 2.4 % Co. Flotation kinetics indicate that maximum recoveries during the rougher stage are achieved after the first three minutes.
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The flotation tests yielded a concentrate grade of 3.93%TCu and concentrate recovery of 64.36% with sodium su lphide consumption at 200 g/t, sodium isobu tyl xanthate at 150 g/t, ethylen ediamine
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Collector dosage optimisation suggests that 30 g/t DTP allowed to reach maximum recoveries for copper and cobalt of 94.2 % and 84.1 %, respectively, with concentrate …
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Abstract This research aimed at recovering metals retained in the tailings from the flotation of copper (Cu) and cobalt (Co) ores conducted at the New Concentrator in Kipushi (NCK). Metals retention in the tailings (0.73% Cu and 0.37% Co) increased due to the removal of the gravity separation section from the processing circuit together with …
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Extensive batch, locked-cycle and semi-continuous pilot plant test work for processing of Kabanga flotation concentrate into refined nickel, copper and cobalt metals has been undertaken to confirm ...
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The results showed that an optimized cobalt–sulfur concentrate with a cobalt grade of 2.08%, sulfur content of 36.12%, sulfur recovery of 85.79%, and cobalt recovery and 84.77% were obtained by …
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DOI: 10.1016/J.MINENG.2007.01.011 Corpus ID: 98573418; Recovery of copper, nickel and cobalt from acidic pressure leaching solutions of low-grade sulfide flotation concentrates
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Cobalt depression can be enhanced by small cyanide dosages. If the cobalt is found with chalcopyrite, bulk flotation can be carried out with xanthate at pH 10, and separation …
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Copper-cobalt ore flotation-magnetic separation combined process is suitable for processing oxidized ore with more magnetic substances and can effectively improve the grade of magnetic separation concentrate. Flotation-Magnetic Separation Combined Process Flow. First, grind the copper-cobalt oxide ore flotation tailings with …
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The concentrate product from the third cleaning stage will be dewatered, while the tailings will feed the sulphur removal flotation circuit. The nickel/cobalt concentrate will be thickened in a 4.5m thickener and disc filtered to reduce the moisture content to 12% and stored. The sulphur from the nickel/cobalt flotation tailings will be …
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The concentrate from the first flotation circuit is treated in a second flotation circuit to produce a nickel–cobalt-rich concentrate and a copper-rich concentrate. The second flotation circuit is a slightly different configuration of flotation equipment than that shown in Figure 2.2.8, but the general idea is the same. The only major ...
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Research using a continuous flotation test unit has resulted in a flowsheet that allows the recovery of 70 pct or more of the cobalt in Missouri lead ore copper concentrates, at grades of greater than 3 pct Co or 7 pct combined Ni-Co.
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Flotation concentrates are an important resource for cobalt and base metals (Cu & Zn). NaNO 3 is an effective oxidant for pyritic flotation concentrate in H 2 SO 4 media.. NaNO 3 and temperature are the most significant factors affecting Co extraction.. Ultra-fine grinding improves the kinetics of metal extraction. • Cobalt extraction relies …
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Abstract: In this study, recovery of cobalt from a copper flotation tailing (pyrite concentrate) by oxidative acid leaching was investigated. The as-received tailings (d80: 64 μm) contained 6407 ...
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The nickel bearing phases in the flotation concentrate were pentlandite (7–8 wt%) and violarite (7–9 wt%) with pyrrhotite (39 wt%) and pyrite (13 wt%) being the major sulfide minerals. The leaching conditions employed are summarized in Table 5. For experiments involving co-processing of laterite and concentrate, the nickel concentrate …
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An experimental study on leaching of cobalt and nickel from a Lubin (Poland) sulfide flotation copper concentrate with oxygenated sulphuric acid solution in the presence of iron(III) sulfate is ...
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An experimental study on leaching of cobalt and nickel from a Lubin (Poland) sulfide flotation copper concentrate with oxygenated sulphuric acid solution in the presence of iron(III) sulfate is ...
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In the concentrate obtained using cleaner flotation tests, the Co grade increased to 0.49% and Co recovery increased to 90.56%. These results show that froth flotation, carried out with the appropriate reagents, is a successful method for recovering Co by enriching the flotation plant tailings.
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Nickel concentrates typically are smelted and refined to produce Class 1 nickel products which can be used to manufacture metal salts. Alternatively, a process has been conceived to pressure oxidize nickel sulfide flotation concentrate to produce mixed hydroxide precipitate (MHP) containing nickel and cobalt.
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flotation experiments were carried out to investigate the effect of experimental parameters such as pH, pH condi-tioning time, types and amounts of depressant, collector, and frother on the grade and recovery of Co. In the sec-ond stage, cleaner flotation was applied to the obtained rougher concentrate to further increase the grade and
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Cobalt is a critical and strategic metal because of its essential defence related uses and the high degree of U.S. import reliance for its supply. Currently, ... The process comprises (1) oxidative pressure leaching of the flotation concentrate in an oxygen atmosphere at 195° C, (2) precipitation of the major portion of the iron and …
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The beneficiation of high talc-containing copper–cobalt flotation tailings was studied by centrifugal gravity concentration. ... The industrial flowsheet involves obtaining a bulk concentrate of ...
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The most important sulfide sources, the copper-cobalt ores of Congo (Kinshasa) and Zambia, are processed in the conventional manner to produce a copper-cobalt …
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The cobalt concentrate obtained after flotation needs further processing. It may include further magnetic separation, gravity separation (spiral chute, shaker), or other combined processes to remove residual impurities and improve the grade and purity of …
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The results for cobalt are particularly exciting given the low recovery of cobalt in most smelting operations and the loss of cobalt to converter slags in conventional approaches. In addition, significant nickel losses are often incurred to flotation cleaner tailings to make a smeltable concentrate at an acceptable level of magnesium.
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The flotation concentrate was then subjected to bioleaching by acidophilicbacterial strain, Acidithiobacillus ferrooxidans, for the treatment of base metals such as cobalt, nickel and copper. The application of bio-collector reduced the silica and alumina-based impurities, which aided the bio-leaching process to achieve a Cu …
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COBALT (Data in metric tons of cobalt content unless otherwise noted) Domestic Production and Use: In 2019, the nickel-copper Eagle Mine in Michigan produced cobalt-bearing nickel concentrate. In Missouri, a company built a flotation plant and produced nickel-copper-cobalt concentrate from historic mine tailings.
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