آخرین محصولات
The selective flotation of pentlandite from a nickel ore
Nickel sulphide ores containing pentlandite, pyrrhotite and talc have traditionally been treated by bulk sulphide flotation, an approach which seeks to maximise nickel recovery …
Development and implementation of a new flowsheet for the flotation …
Using a new patented process for removing oxidation products from the surfaces of sulphides, the flotation of ultrafine nickel minerals has been raised markedly in both bench and plant scale tests. For the flotation of ultrafines, the importance of …
Characterization of a Nickel Sulfide Concentrate and Its
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, …
Nickel Ore Dispersion Evaluation and Consequences in Flotation …
Nickel ore dispersion before flotation using different reagents was investigated on a bench scale to improve metallurgical recovery and selectivity. The nickel ore had a content of 0.8 pct nickel and 14.5 pct MgO. A positive linear correlation between MgO and Ni was found.
Challenges in processing nickel laterite ores by flotation
Fine grinding should be used to liberate nickel-containing particles in laterite ores. Reactor–separator cell with more probability of particle–bubble attachment can help. Selective …
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 ...
Full article: The Direct Leaching of Nickel Sulfide …
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 …
16. Flotation of Nickel and Nickel–Copper Ores
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...
Application of NARX Model in Nickel Flotation System
Nickel flotation is a very complex industrial process with hundreds of data parameters throughout the production of nickel ore flotation, and there is often a strong coupling between these parameters and variables, and even a lot of repetitive information between these variables. If these data are used directly in the modelling, the algorithm ...
Investigation of the flotation performance of nickel sulphide …
Flotation tests revealed that the stirred tanks with two impellers had an advantage over those with one impeller in intensifying agitation pretreatment, and the higher agitation speed led to a better flotation performance of nickel ores.
The selective flotation of pentlandite from a nickel ore
Nickel sulphide ores containing pentlandite, pyrrhotite and talc have traditionally been treated by bulk sulphide flotation, an approach which seeks to maximise nickel recovery and talc rejection but which does not reject pyrrhotite.
The Direct Leaching of Nickel Sulfide Flotation …
and nickel pig iron (NPI), or higher purity class 1 (>99.8% Ni) nickel such as nickel powder, briquettes or electrowon cathode (Campagnol et al. 2017). Campagnol et al. (2017) have indi-cated that demand for class 1 nickel in the form of high purity nickel sulfate for lithium-ion batteries is expected to reach
Development and implementation of a new flowsheet for …
Using a new patented process for removing oxidation products from the surfaces of sulphides, the flotation of ultrafine nickel minerals has been raised markedly in both bench …
NICKEL AND COBALT ORES: FLOTATION
Most of the world's nickel is extracted from the mineral pentlandite, (Ni, Fe)9S8, which frequently oc-curs in ores containing predominantly pyrrhotite and various non-sulRdes, some of which contain magne-sium (Table 1). The nickel content in such sul Rde ores is generally low …
[PDF] NICKEL AND COBALT ORES : FLOTATION | Semantic …
The usual method of nickel extraction from sulRde ores is through the production of nickel matte after enriching the nickel content of the ore. This is commonly carried out by magnetic …
The Effect of Oxidation on the Flotation Behaviour 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. …
The Effect of Oxidation on the Flotation Behaviour 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. In general, moderate oxidation of a freshly ground ore promotes the flotability of all principal sulphides in the ore leading to a bulk flotation concentrate.
NICKEL AND COBALT ORES: FLOTATION
Most of the world's nickel is extracted from the mineral pentlandite, (Ni, Fe)9S8, which frequently oc-curs in ores containing predominantly pyrrhotite and various non-sulRdes, some of which contain magne-sium (Table 1). The nickel content in such sul Rde ores is generally low (0.2}3%) and varies from place to place in the same deposit.
Nickel Ore Dispersion Evaluation and Consequences in …
Nickel ore dispersion before flotation using different reagents was investigated on a bench scale to improve metallurgical recovery and selectivity. The nickel ore had a content of …
(PDF) Flotation of nickel-copper sulphide ore
The effect on flotation performance of various parameters such as pH, collector dosage, % solids and depressant dosage at different levels was investigated. Therefore, the main objective of the study was to optimize the process parameters for the flotation of base metals from a nickel-copper sulphide ore. 2. Materials and Methods 2. 1.
The ion flotation of copper, nickel, and cobalt using the
Heavy metal contaminated waters are a significant environmental hazard, which require novel treatment methodologies. Further, the metals which might be recovered from these streams have significant intrinsic value, if they can be collected and concentrated. This work demonstrates, for the first time, the use of surfactin, an environmentally benign biosurfactant, …
Nickel and Cobalt Ores: Flotation
The latter may be problematic when intergrown inclusions of pentlandite or nickel in solid solution are present (Rao, 2000). Rejecting hexagonal pyrrhotite may be achieved by (i) staged flotation ...
Challenges in processing nickel laterite ores by flotation
Fine grinding should be used to liberate nickel-containing particles in laterite ores. Reactor–separator cell with more probability of particle–bubble attachment can help. Selective flocculation can help to enhance flotation performance of laterite ore.
16. Flotation of Nickel and Nickel–Copper Ores
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, …
Utilization of phosphorylated starch as a selective …
During the flotation process, the water level in the flotation cell was maintained constant by adding external water. After flotation, the froth product and the non-floated product at the bottom of the cell were collected on filter paper, filtered, dried, weighed, sampled, prepared, and analyzed for copper and nickel content.
Investigation of the flotation performance of nickel sulphide …
Flotation tests revealed that the stirred tanks with two impellers had an advantage over those with one impeller in intensifying agitation pretreatment, and the higher agitation …
Selective sulphidation and flotation of nickel from a …
The challenges in processing nickel laterite ores using flotation process were comprehensively reviewed. Literature shows that flotation has not been successful to recover nickel from laterite ores. Nickel in laterite ores is often finely disseminated in various minerals in very fine size. Therefore, fine grinding can be useful to liberate ...
Full article: The Direct Leaching of Nickel Sulfide Flotation
2. Laboratory investigations into direct leaching of nickel sulfide concentrates. Laboratory investigations into direct hydrometallurgical processing of nickel sulfide flotation concentrates have been carried out in response to the technical and environmental hurdles presented by the traditional concentrate smelting-matte refining route and a number of these …
Full article: The Direct Leaching of Nickel Sulfide …
Sulfuric acid pressure oxidation processes for the treatment of nickel flotation concentrates are by far the most numerous and advanced with respect to pilot plant development and commercial deployment. The key …
[PDF] NICKEL AND COBALT ORES : FLOTATION | Semantic …
The usual method of nickel extraction from sulRde ores is through the production of nickel matte after enriching the nickel content of the ore. This is commonly carried out by magnetic separation, Sotation, or a combination of both after the ore is comminuted to below 200 m in size.
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