— From the above, it can be concluded that sulphidising flotation of oxide copper–cobalt ores with sodium hydrosulphide as sulphidising agent exhibits a good selectivity of copper and cobalt flotation towards the gangue minerals. On the other hand, the use of ammonium sulphide induces higher metals recoveries with very low selectivity.

 — Here, the MLA was used to analyze the mineralogical characteristics of ores and the particle size of primary flotation tailings, and to evaluate the recovery of sulfide aggregates (involving copper and …

Highlights Oxidized copper–cobalt ore samples and flotation residues are characterized to evaluate losses in copper and cobalt metals in the flotation circuit. The flotation tailings are treated with the Knelson centrifugal gravity separator for the recovery of copper– cobalt-bearing minerals. High centrifugal acceleration (120g) was used ...

 — DOI: 10.1016/j.mineng.2020.106710 Corpus ID: 229386822; Novel approach for processing complex carbonate-rich copper-cobalt mixed ores via reverse flotation @article{Dehaine2020NovelAF, title={Novel approach for processing complex carbonate-rich copper-cobalt mixed ores via reverse flotation}, author={Quentin Dehaine …

 — In mix ore (enargite + chalcopyrite) flotation, 97% of enargite was first removed at pH 4 followed by chalcopyrite flotation at pH 8, and over 95% recovery was achieved in 15 min flotation time.

understanding historical recoveries and for predicting copper recovery at the Kansanshi flotation circuit [17]. This paper explores the complexity of modelling the flotation of copper–cobalt sulphide ore as a function of the feed mineralogy, which will be the only changing variable in the experiments.

Most of the world's nickel is extracted from the mineral pentlandite, (Ni, Fe)9S8, which frequently occurs in ores containing predominantly pyrrhotite and various non-sulRdes, some of which contain magnesium (Table 1). The nickel content in such sulRde ores is generally low (0.2}3%) and varies from place to place in the same deposit. The low …

 — Flotation concentrates are treated in smelter operations to produce blister copper, cast into anodes and electro-refined to produce high grade copper. Cobalt is lost …

The role of ore mineralogy on the flotation performance of copper-cobalt sulphides was studied by tracking the changes in mineral properties with time throughout the flotation …

Three cobalt-bearing oxide minerals are observed in the mixed ore, i.e.hetero- genite, kolwezite and cupro-asbolane, while carrollite is the only cobalt-bearing sulphide mineral. A two-stage

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 ...

 — This paper starts by reviewing the main geo-metallurgical properties of cobalt ores, with a particular focus on ore mineralogy which exerts a significant control over ore processing behaviour...

 — The increasing complexity of ore deposits, declining ore grades and higher global demand for copper has resulted in increased ore processing by flotation plants around the world.

Semantic Scholar extracted view of "Flotation of Oxide Copper and Copper Cobalt Ores" by S. Bulatovic. ... The flotation of oxide copper ore with sodium oleate was investigated to determine the optimum pH and dosages of chemical reagents. From the mineralogical analysis using X-ray diffraction, ...

 — Improving the efficiency of oxide copper-cobalt ores flotation by combination of sulphidisers. Miner Eng, 16 (10) (2003), pp. 1023-1026. View PDF View article View in Scopus Google Scholar [6] ... Process mineralogy and flotation kinetic of a copper oxide ore during sulfuration flotation. Adv Mater Res, 634 (2013), pp. 3460-3465. View in Scopus ...

 — Lab-scale flotation of copper and cobalt oxidized ore from the Luiswishi deposit in the Katanga province (DRC) has been done focusing on the influence of the degree of process water recycling on ...

 — cobalt ore s are finely disse minated, thus the close coexistence of cop per and cobalt min- erals in ores w ere utilized to increas e the granularity of recovery objects during primary flotation ...

Flotation of mixed oxide sulphide copper-cobalt minerals using xanthate, dithiophosphate, thiocarbamate and blended collectors ... presentative of a typical mixed oxide-sulphide copper-cobalt ore. To enable homogenisation, the ore was initially crushed below 2mm and riffled into representative sub-samples of 500g for test work. The re-

Flotation of Oxide Copper and Copper Cobalt Ores. Srdjan M. Bulatovic, in Handbook of Flotation Reagents: Chemistry, Theory and Practice, 2010 Publisher Summary. The process of flotation of oxide copper and copper cobalt ores involves two basic flotation methods: fatty acid flotation of oxide copper minerals from siliceous ore and …

 — 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 …

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 …

 — Flotation methods include direct flotation (using chelating reagents or a fatty acid as collector), sulfidization flotation (using xanthate as collector), and activation …

 — This typically involves comminution and flotation to ... The present study proposes a new smelting process for limonitic nickeliferous laterite ore in order to separate nickel and cobalt from the ...

Global flotation of copper–cobalt, from a pre-concentrate obtained by gravitational means. 2. ... If this is the case, additional fuel is required, usually in the form of coal or sulfur which is mixed with the ore and fed to the roaster using a screw feeder. Some other operations have experienced problems with sulfur simply as it sublimates ...

flotation response of a copper cobalt oxide ore sample. The head assay conducted on the initial ore sample showed that it contained about 2.90% of Cu, 0.12% of Co. Upon the flotation test work, the results obtained indicated that the concentrate obtained with use of the mixture gazoil-rinkalore RX

incoming ore down to a normal cleaner flotation feed density. This option, however, results in a slightly lower recovery efficiency of both copper and cobalt compared

The flotation of cobalt-containing magnetite ore from Qamsar, Iran, was examined in this work using two distinct carbon chains, xanthate and a dithiophosphate collector family under both acidic and alkaline flotation conditions. The influential factors and the levels under ...

 — The beneficiation of high talc-containing copper–cobalt flotation tailings was studied by centrifugal gravity concentration. It was found that copper and cobalt minerals were finely disseminated ...

cobalt minerals, as most studies consider the flotation of cobalt ores as part of the main metal, such as copper and nickel [19]. Cobalt is an essential metal with a wide range of uses, and it is obtained from secondary sources in Turkey. The Küre deposits, known as the pyrite-containing copper deposit, are a significant source of cobalt.

 — Recovering valuable metals such as cobalt from tailings can help conserve resources and meet the demand for metals. The aim of this study is to investigate the …