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The principal technological scheme of flotation includes copper–nickel and nickel–pyrrhotite flotation cycles, the selection of a copper–nickel concentrate into a copper …
nickel powder can also be produced in autoclaves by using hydrogen reduction technology. The new Outotec anode-in-a-bag technology for nickel electrowinning offers an environmentally friendly electrowinning process by significantly reducing nickel emissions and notably improving working conditions for operators. This technology also
After that, the pulp was transferred to a flotation tank with a capacity of 0.5 L to recover copper and nickel by flotation tests. Then, sulfuric acid, copper sulphate, isobutyl xanthate and terpineol were sequentially injected into the flotation cell, and conditioned for 2, 5, 4 and 1 min, respectively. Finally, collection was conducted for 3 ...
The maximum copper and nickel recoveries in the 7 cm impeller tests were observed at 93.1% and 72.5%, respectively. However, a significant decrease in the flotation rate of nickel was observed, due to entrainment of …
Vezina (Citation 1973) studied the pressure oxidation of a Canadian copper–nickel flotation concentrate grading 6.85% Ni, 8.83% Cu and 0.55% Co under a variety of conditions (refer to Table 2); the main sulfide minerals in the concentrate were chalcopyrite, pentlandite and pyrrhotite. The extraction of Ni, Co, and Cu during leaching increased ...
Cobalt is a valuable by-product obtained from processing of nickel–copper sulphide ores. From the nickel and cobalt assays of flotation products, cumulative recoveries of respective metals were estimated and plotted against each other in Fig. 2. As can be seen, all data points fall on the same line showing a 1:1 ratio between recoveries of ...
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 nickel content of the present-day …
Surfactin, at a molar ratio of 1:3, has been shown to float 75.2%, 94.7%, and 98.2% of initial 100 (mu) M solutions of copper nickel and cobalt, respectively. Increasing …
The procedure developed here represents a technically feasible way to separate bulk copper-nickel mattes from the Duluth Gabbro Complex into copper-rich and nickel-rich fractions that can be treated by existing metallurgical processes.
Chapter 16: Flotation of Nickel and Nickel Copper Ores. 16.1 ORE TYPES AND MINERALOGY. There are more than 45 different nickel minerals, but only a few are of economic importance. Table 16.1 lists some of the most important nickel minerals. Nickel, in various ores can also be found in other minerals, such as pyrrhotite and various cobalt ...
The main aim of flotation procedure is separating nickel and copper, flotation procedure is a physicochemical reaction procedure, under the action of reagent, copper …
In nickel-copper sulfide ore processing, serpentine is a common gangue mineral encountered in complex sulfide ores and can easily cause entrainment during flotation [].Large amounts of serpentine in the flotation …
Bulk flotation An efficient procedure for nickel recovery is to combine copper sulphate to activate pentlandite with guar gum to depress talc. This is the method which has been used for the flotation of nickel ores in industry and which we have termed the "standard bulk float". A selection of results for this ore is given in Table 3.
Sulphide ores are the major source of valuable metals such as copper, lead, zinc, and nickel, as well as gold, silver, and platinum group metals (PGMs), and flotation is the dominant industrial process to recover these metals via the production of a sulphide concentrate. ... with only a few copper flotation plants adopting other solutions (e.g ...
In pursuit of carbon neutrality, the demand for metals that are necessary for the development of clean energy technologies is rapidly increasing. Metallurgical waste, such as slag, presents a promising secondary source of these key metals. This research aims to develop an eco-friendly hydrometallurgical process to recover Cu, Ni, and Co from discarded …
DOI: 10.1007/s43938-023-00023-8 Corpus ID: 257433818; The ion flotation of copper, nickel, and cobalt using the biosurfactant surfactin @article{Schlebusch2023TheIF, title={The ion flotation of copper, nickel, and cobalt using the biosurfactant surfactin}, author={Izak Schlebusch and Robert William McClelland Pott and Margreth Tadie}, journal={Discover Chemical Engineering}, …
In anticipation of future demands, a comprehensive understanding of the chemical and mineralogical characteristics of nickel-bearing minerals is a prerequisite to devising effective nickel beneficiation methods. Of particular importance are markers in the mineralogy of the flotation concentrate that inform beneficiation strategies to improve concentrate grades, …
The rougher flotation and closed-circuit flotation tests of copper-nickel sulfide ore (1.0 kg) were performed on XFD-63 type flotation machines of different capacities (3.0 L, 1.0 L, obtained from Wuhan Exploration Machinery Co., Ltd.) [5], with mechanically stirring speed of 1610 rpm. The 3.0 L cell was used for rougher and scavenger stages ...
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 recovery of about 74%.
In this paper, ion flotation method is employed to remove metal ions such as copper, lead, zinc, cadmium and nickel from aqueous solution. Firstly, several parameters such as pH, concentration and ...
Copper and nickel minerals are separated by sequential flotation. Copper is floated first, and the copper scavenger tails is the feed to nickel flotation. Finally, pyrrhotite and other …
The recovery of these copper minerals by flotation or hydrometallurgy from ores, typically containing 0.5%TCu (open pit mines) and 1-2%TCu (underground mines) ... Sulphide ores are the major sources of base metals like Copper, Lead, Zinc, Nickel and Cobalt. Beneficiation of
In this paper, the flotation behaviour of nickel-copper ores processed in the Sudbury area is discusse~ with emphasis on the effect of oxidation on individual minerals, pnmarily pyrrhOlite. …
Overall, copper had higher flotation rates in comparison to nickel at both 25 ℃ and 60 ℃. On comparing the flotation rates for copper, generally the flotation rates were higher at 25 ℃ than at 60 ℃. The flotation rates of copper at both 25 and 60 ℃ are within a small range of 0.46–0.55 min −1.
ABSTRACT. The extraction of nickel (Ni) from sulfide resources commences with flotation to produce a concentrate which is then smelted to produce a nickel-enriched phase called matte, and further refined to produce …
The current study proposes an efficient approach for the recovery of nickel and other valuable metals from nickel sulfide flotation tailings. In the study, magnesium chloride, sodium chloride, and ferric chloride were investigated as reactants in an acidic medium to improve metal extraction. The effect of leaching time, leaching temperature, H2SO4 concentration, …
Researchers have tried to improve nickel laterite flotation recovery by using a number of feed preparation techniques. ... and they may contain significant amounts of moisture and clay minerals as well as minor amounts of copper or zinc. This enrichment may be due to either precipitation of nickel rich minerals such as garnierite within veins ...
The Direct Leaching of Nickel Sulfide Flotation Concentrates – A Historic and State-of- the-Art Review Part I: Piloted Processes and Commercial Operations Nebeal ... of nickel-copper concentrates and concentrates high in PGMs, slow cooling of the converter matte is carried out to enable copper and nickel phase separation and the formation of ...
20 wt % where recoveries of nickel and copper at 20 wt % density were higher than nickel and copper recoveries of 40 wt % density As an example, Cu recovery increased from 70% to 82% when the pulp
Nickel smelting slag contains valuable metals including nickel and copper. Failure to recycle these metals wastes resources, and disposal of nickel slag in stockpiles results in environmental pollution. Nickel slag recycling is …
