- منطقة بودونغ الجديدة ، شنغهاي ، الصين .
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Highlights • Ni grade in laterite ores was increased using magnetic and gravity separation. • Ni bearing serpentine were separated from heavier minerals with a Falcon concentrator. • The mineralogy of Ni laterites affects upgrading consideration by …
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Despite nickel-bearing sulfide deposits having a large share of the world's nickel extraction, lateritic ore deposits contain more than 70% of the world's nickel reserves. Considering the limitations of producing nickel from sulfide reserves, the use of …
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More nickel laterite ores are imported into China because of the depletion of domestic nickel sulfide resources. Consequently, it is of great importance to the Chinese economy to effectively utilize low grade nickel laterite ore [7]. Nickel laterite ores are formed by the weathering of olivine bedrock in tropical to sub-tropical climates [8,9].
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Nickel deposits mainly occur in two forms: sulfide and laterite-type ore deposits . Nickel laterite minerals are very complex, yet the ore demand is very high due to India's only source of nickel and cobalt. Chromite overburden is waste heaped at mines and consisting of laterite ore with < 1 wt% of nickel concentration.
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Nickel is widely used in industrial processes and plays a crucial role in many applications. However, most of the nickel resource mainly exists as nickel oxide in laterite nickel ore with complex composition, resulting in difficulty in upgrading the nickel content using physical separation methods. In this study, high-grade ferronickel concentrates …
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Thus, the challenge of processing nickel laterite ores still exists. In fact, no physical separation technique (including flotation) has been able to dramatically upgrade nickel in ... 2009, Watling et al., 2011) have examined the composition of 50 nickel laterite ore samples and noted an extreme variability with in both their elemental and ...
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The low-grade nickel laterite ore used in this study was successfully upgraded through selective reduction by industrialized rotary kilns followed by magnetic separation. The results indicated that both iron metallization extent and nickel metallization extent showed obvious linear correlation. In addition, rational roasting temperature and …
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The characterization and preliminary separation studies indicated that gravity-based separation could be opted for the pre-concentration of such mixed copper ore. ... Relationship between process mineralogical characterization and beneficiability of low-grade laterite nickel ore Article 22 October 2021 ...
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example, in a nickel-cobalt laterite deposit in New South Wales, Aus-tralia, gravity separation followed by magnetic separation resulted in upgrading nickel from 0.9% to 1.1% at 57% recovery (Aral, 2013). Furthermore, Muir and Johnson (2006) demonstrated that in physical beneficiation using gravity, particle size is the key …
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A number of physical separation techniques for nickel (Ni) laterites have been investigated at laboratory and pilot plant scale and reported in the open literature. These included sink–float (or dense media) separation, gravity separation, magnetic separation, electrostatic separation, (roasting) and flotation.
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For example, in a nickel-cobalt laterite deposit in New South Wales, Australia, gravity separation followed by magnetic separation resulted in upgrading nickel from 0.9% to 1.1% at 57% recovery (Aral, 2013). Furthermore, Muir and Johnson (2006) demonstrated that in physical beneficiation using gravity, particle size is the key …
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Nickel laterite ore is used to produce nickel metal, predominantly to manufacture stainless steel as well as nickel sulfate, a key ingredient in the batteries that drive electric vehicles. Nickel laterite production is on the rise and surpassing conventional sulfide deposits. The efficiency of mining and processing nickel laterites is defined by …
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The process consists of reducing the ore with hydrogen, extracting of iron and nickel in the form of volatile metal carbonyls, separating the metal carbonyls and producing high purity nickel and iron metals; and production of copper, cobalt and PGE concentrate by gravity or magnetic separation.
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These beneficiation methods include sink-float (or dense media) separation, gravity separation, magnetic separation, electrostatic separation, (roasting) and flotation [26,27,28,29,30]. For silicon magnesium laterite ore with nickel content less than 1%, beneficiation seems to be of little significance.
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Abstract Nickel is mostly extracted from sulfide ores, however, laterite ores account for over 60 pct of all nickel resources in the world, and despite its predominance, there is no well-established process to extract nickel from such ores. Nickel in laterites is hosted in many different compounds such as oxides, hydroxides, and silicates minerals. …
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