Due to the complex structure of mineralization, a combination of gravity-separation and flotation methods was applied for the concentration of nickel sulphide and oxide ores. A nickel concentrate containing 12.32% Ni was produced with 89.7% recovery and final tailings with 0.088% Ni can be disposed with 4.9% of metal loss.
Nickel sulphide ores containing pentlandite, pyrrhotite and talc have traditionally been treated by bulk sulphide flotation, an approach which seeks to …
1. Introduction. Currently, pentlandite is the most common of the primary nickel sulfide minerals ((Fe, Ni) 9 S 8) because it is one of the most commercially important minerals for the extraction of nickel (Lu et al., 2019c).Nickel sulfide ore is generally produced in basic and ultra basic rocks, and most of the rocks are completely or partially …
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 process exploits the particle size dependence of nickel sulphide flotation and the different ways that pH change and pulp density influence the response …
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 …
Flotation of nickel oxide with amyl xanthate showed an optimum pH range ca. 4 to 8. • The isoelectric point of NiO was ca. pH 8.1 and showed an acidic shift in the presence of AmX −. This, coupled with the flotation result, suggests that interaction between NiO and AmX is at least partly physical (electrostatic). •
In this study, the effect of purifying the nickel concentrate thickener overflow water with DAF on the metallurgical performance of nickel flotation was investigated. …
In the flotation process, a mixture of water, minerals, and a flotation agent (also known as a collector) is agitated to create a stable froth of bubbles. The flotation agent helps to form a stable froth of air bubbles, which attach to the mineral particles and cause them to rise to the surface, where they can be collected.
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 …
Flotation of low grade nickel sulfide ores into a concentrate suitable for smelting, and at acceptable nickel recovery, can be challenging. Alteration of the gangue minerals can mean talc is present in considerable quantities. Talc floats naturally and can be very difficult to depress without significant nickel losses. High talc bearing ores have …
1. Introduction. Froth flotation is a mature technology that has been practiced successfully for more than a century (Yalcin and Kelebek, 2011).It is, however, still not fully understood and remains relatively inefficient (Shean and Cilliers, 2011).Several tools are available for the study of industrial flotation, with laboratory scale flotation testing …
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…
Flotation and hydrometallurgical processing routes for improving PGM recovery from a non-sulphide or oxidic PGM ore were investigated. The results indicated that alkyl …
Pyrometallurgically produced nickel matte is leached in atmospheric and pressure Outotec OKTOP reactors with the help of oxygen and sulfuric acid. The leaching circuit …
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 …
DOI: 10.1016/J.MINPRO.2005.08.001 Corpus ID: 96573710; Development and implementation of a new flowsheet for the flotation of a low grade nickel ore @article{Senior2005DevelopmentAI, title={Development and implementation of a new flowsheet for the flotation of a low grade nickel ore}, author={Geoffrey David Senior …
The recovery and concentration of the nickel sulphide mineral, pentlandite, present several challenges due to its relatively slow flotation, leading to excessive …
Highlights High temperature experiments demonstrated that selective sulphidation is feasible. Sulphides were submicron in size but could be physically upgraded. Nickel sulphides responded to flotation and grades of 6–8% were achieved. Low nickel grade was due to fine particle entrainment. Low nickel recovery was due to issues with …
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 …
Selective extraction of nickel and cobalt from disseminated sulfide flotation cleaner tailings using alkaline glycine-ammonia leaching solutions September 2023 Minerals Engineering 204:108418
The usual method of nickel extraction from sul Rde ores is through the production of nickel matte after enriching the nickel content of the ore. This is com-monly carried out by …
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 …
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 ...
Request PDF | Selective sulphidation and flotation of nickel from a nickeliferous laterite ore | The sulphidation of a nickeliferous lateritic ore was studied at temperatures between 450 and 1100 ...
Crushinggrinding And Flotation Of Nickel . Crushing Grinding And Flotation Of Nickel. Grinding nickel effectiveness of ni as an impurity trapper in refining of silicon has been 993 c after crushing and grinding a mixture of si and alloy particles would lundin minings eagle nickel copper mine is located in the upper peninsula of crushing ...
Effect of calcium and thiosulfate ions on nickel flotation (KeX 75 g/t). The effect of thiosulfate was negligible in the beginning of flotation, and in some cases nickel recovery was even lower than without thiosulfate addition. This may be a consequence of the lower ion concentrations and more negative pulp potentials after thiosulfate addition.
combination of iron and nickel oxides will be available for reaction at relatively low temperatures (<300 ° C). A thermodynamic analysis of the selective sulphidation process (Harris, 2011) reveals that there is an operating window, where a nickel sulphide phase can be produced with a nickel grade on the order of 20 wt.% nick- el, while achieving …
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 pure Ni products as well as by-products, such as cobalt (Co), copper (Cu) and precious metals.
Flotation practice differs by geographical location. Bulk sulfide flotation is generally carried out on Western Australian nickel ores which tend to be low in copper and contain substantial ...
