A complete copper-nickel sulfide ore processing production line is crushing, grinding, flotation, and tailings treatment. Adopt a two-stage closed-circuit crushing …

The present study initially investigates the kinetics of microwave-assisted grinding and flotation in a porphyry copper deposit. Kinetic tests were conducted on untreated and microwave-irradiated samples by varying the exposure time from 15 to 150 s. Optical microscopy, energy-dispersive X-ray spectroscopy, and scanning electron …

The nickel grade versus recovery curves are shown in Fig. 4. It can be seen that with the increase of nickel recovery, the grade of nickel decreased. The High Intensity Conditioning method produces a vastly superior nickel grade-recovery relationship. These results confirm that the use of HIC improves the flotation performance of this ore greatly.

Abstract. The coprecipitate flotation of 137 Cs from dilute aqueous solutions and simulated radioactive wastes using nickel hexacyanoferrate(II) as a coprecipitant and sodium lauryl sulfate, cetyltrimethylammonium bromide, or dodecyl amine as a collector was extensively investigated to establish the best conditions for cesium …

In summary, crushing, grinding, and flotation are essential steps in the beneficiation of nickel ore. These processes help to separate the valuable minerals …

According to the plant experience, the quality of the process water in copper flotation circuit does not impact much on copper recovery, but for the nickel flotation circuit, the increase in impurities in the …

In this study, upgrading nickel by flotation in three laterite ore samples, limonite, saprolite and intermediate, from different geology zones, was investigated. It was possible to upgrade the nickel grade in the saprolite sample by about 40% at more about 70% recovery using a hydroxamate collector at pH 10. These grade and recovery results …

The flotation of nickel sulfide ore having serpentine and talc as the main gangue minerals, is severely affected by features such as, containment and sliming. If the MgO content is greater than a certain percentage (typically 6.8%), the melting point and viscosity of the slag increases, thus resulting in higher operating temperatures, and ...

The process exploits the particle size dependence of nickel sulphide flotation and the different ways that pH change and pulp density influence the response of coarse and fine particles. Implementation of the new process at Mt Keith has raised nickel recovery by 10%. In turn, nickel production has increased by over 6000 t.p.a. and the …

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 …

Effects of typical flotation reagent on microbial toxicity and nickel bioavailability in soil . × ... Nickel is a trace metal that exhibits pronounced long-term immobilization reactions in soil. It is unknown if the slowly decreasing solubility of Ni in soil on aging correlates with decreased toxicity to soil biota. Three uncontaminated soils ...

Froth flotation is widely used for concentration of base metal sulphide minerals in complex ores. One of the major challenges faced by flotation of these ores is the ever varying grade and mineralogy. This therefore calls for a continual characterisation and optimisation of flotation parameters such that concentrator performance as a whole is always …

The Bureau of Mines investigated the flotation responses of two copper nickel ore samples from the Duluth Complex with the objective of recovering bulk sulfide concentrates. One of the ores studied was taken from a test pit; the other was taken from a test shaft. The samples were quite similar except that the pit sample analyzed 0.35 pct …

The effect of the depressant galactomannan (KGM) on the depression of talc and the flotation of a nickel–copper sulfide ore have been investigated through microflotation, batch flotation and industrial flotation tests, zeta potential and infrared spectrum measurements. The flotation results indicated that KGM had a straining …

There were some problems,such as low-grade copper concentrate,nickel concentrate containing high copper,higher reagents dosage,poor separation efficiancy,etc.,during copper nickel separation of flotation process on sulfide nickel copper ore in Xinjiang Yakesi resource development incorporated company,Hami district,Xinjiang Uygur …

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 ...

The flotation feed system displayed complexity including sensitivity to aging of the tailings, coupled with acute sensitivity to the effects of dilution. The work suggests …

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 ore dispersion before flotation using different reagents was investigated on a bench scale to improve metallurgical recovery and selectivity. The …

The overall economics and suitability of the process relies on the total nickel recovery, whereas the flotation performance should be assessed on the recoverable nickel, which is approximately 80% of the total nickel. The flotation results indicate that the flotation process is selectively upgrading the nickel sulphides, with the highest-grade ...

The rheology and flotation of nickel-copper sulfide ore and serpe ntine was investigated on a . laboratory scale. The effect of density on rheological p arameters including shear yield stress, ...

explored in the context of combining nickel laterite and nickel sulfide leaching into a single unit operation, where the acid and heat required for nickel laterite leaching is generated in situ by oxidation of the iron sulfide component (Ferron and Fleming 2004; McDonald and Li 2020; McDonald et al. 2012; Quinn,

Nickel; cobalt; pentlandite; nickel sulfides; hydrometallurgy 1. Introduction The extraction of nickel from sulfidic resources was described in Part I where it was shown that direct hydrometallurgical processing of nickel sulfide flotation concentrates has several distinct advantages over pyro-metallurgy.

The second stage of froth flotation produces a nickel concentrate of 10-20% Ni, along with other by-products and gangue. Smelting is the next stage, designed to recover as much metal as possible. Flash smelting is a common method: dry concentrates are fed into a furnace and heated to a liquid matte and slag. From this step, sulfide …

These agents help create a stable froth layer at the surface of the flotation cell. 5. Flotation: The conditioned slurry is introduced into flotation cells, where air bubbles are injected. The ...

Sulphidization was conducted before froth flotation to convert the surface of nickel oxide to nickel sulphide. Key variables considered were type of sulphidization reagent, sulphidization Eh, time ...

It should be added that segregation of laterite ores prior the flotation process has shown some improvement in upgrading nickel. The segregation process relies on the addition of calcium chloride or sodium chloride and carbon allowing the formation of nickel and iron chlorides at temperatures between 900 and 1150 °C. Iwasaki et al., …

A nickel-copper sulfide system usually coexists with serpentine in deposits. Low nickel-copper recovery and high content of serpentine in concentration adversely affects subsequent metallurgical processes. In this study, test data showed different rheological results at various densities. When the solid ratio of sulfide to serpentine was …

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 …

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 ...