nickel oxides and concentrates

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  Extraction of metals from complex sulfide nickel concentrates …

  2017411 · The recovery of valuable metals from complex sulfide concentrates was investigated via chlorination roasting followed by water leaching. A reaction process is proposed on the basis of previous studies and the results of our preliminary experiments. During the process, various process parameters were studied, including the roasting …

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  Agglomeration and Characterization of Nickel Concentrate (MHP…

  202076 · Mixed hydroxide precipitate (MHP) is a nickel intermediate product that has economical benefits to downstream leaching of lateritic marginal ores. Usually, this product is subsequently processed and refined to produce nickel by hydrometallurgy, but an alternative route can be made integrating hydrometallurgy and pyrometallurgy. Assessing …

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  Export Restrictions on Minerals and Metals: Indonesia s …

  2024228 · These licenses allowed companies to export mineral concentrates.53 Following an announcement in August 2019, Indonesia reinstated the full export ban as of January 1, 2020 (earlier than the January 2022 date previously announced), which essentially halted all exports of nickel ores and concentrates. 54.

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  Sulfate Formation and Decomposition of Nickel Concentrates

  201115 · Nickel sulfide concentrates from two Canadian nickel concentrators were investigated to improve the understanding of SO2 formation and release during processing. The concentrates were heated in gases of various oxygen concentrations up to 1573 K (1300 °C) in a thermal gravimetric analysis unit to simulate what may take place during calcine …

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  Processing of Nickel Ores and Concentrates - ScienceDirect

  Direct extraction of nickel and iron from laterite ores using the carbonyl process. Dmitri S. Terekhov, Nanthakumar Victor Emmanuel. Pages 124-130. View PDF. Article preview. Previous vol/issue. Read the latest articles of Minerals Engineering at ScienceDirect.com, Elsevier’s leading platform of peer-reviewed scholarly literature.

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  Sulfide Ore - an overview | ScienceDirect Topics

  Primary nickel is produced from two very different ores: sulfide ores and laterite (oxide) ores. Sulfide ores, which are generally mined from underground and often found in conjunction with copper-bearing ores, contain copper–iron sulfides in …

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  The Direct Leaching of Nickel Sulfide Flotation Concentrates

  2022711 · A survey of piloted technologies for direct leaching of nickel sulfide concentrates and commercial nickel sulfide operations which have implemented hydrometallurgical processing was described in Part I of this series. Additionally, the geology and mineralogy of nickel sulfide deposits, and typical beneficiation practices were …

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  Nickel Extraction from Nickel Sulfide Concentrates by Iron …

  202191 · The conventional process of nickel extraction from sulfide concentrates involves complex and costly steps, while also generating a considerable amount of sulfur dioxide.

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  The Direct Leaching of Nickel Sulfide Flotation …

  20231025 · Roasting of sulfide concentrates under an oxidizing atmo-sphere to decompose sulfides into their respective oxides prior to leaching has been researched based on adapting the Caron process to treat nickel sulfide ores and concentrates (Forward, Kudryk, and Samis 1948; Queneau, Sproule, and Illis 1949).

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  Preconcentration strategies in the processing of nickel …

  2017815 · Ni laterite ores are mainly classified as silicate and oxide deposits, where each laterite type may contain both silicate and oxide gangue minerals in varying proportions. The oxide deposits are characterised by three different zones: goethitic/limonitic, saprolitic and bedrock (Chen et al., 2004).

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