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  1. No Access

    Article

    Substantiation of the Possibility to Organize a Complex Two-Stage Sulfuric Acid Leaching Technology for Pyrrhotine Middlings

    A two-stage technological scheme is proposed for the processing of pyrrhotine middlings and poor copper–nickel raw materials. The hydrolytic cleaning of cycling leaching solutions from iron is separated as a p...

    A. O. Bol’shikh, O. I. Tsybin, M. A. Bol’shikh… in Russian Metallurgy (Metally) (2021)

  2. No Access

    Article

    Leaching of Rapidly Cooled Copper–Nickel Converter Mattes

    Abstract—Physicochemical studies aimed at increasing the technological efficiency of the hydrometallurgical sulfuric acid processing of copper–nickel converter mattes are presented. The influence of preliminary q...

    A. O. Bol’shikh, O. I. Tsybin, M. A. Bol’shikh… in Russian Metallurgy (Metally) (2020)

  3. No Access

    Article

    Substantiation of the Possibility of Hydrometallurgical Processing of a Copper–Nickel Converter Matte

    The hydrometallurgical processing of industrial converter mattes with the copper-to-nickel concentration ratios (Ni : Cu) of 2 : 1 and 3 : 4 is studied in order to demonstrate the advantages of hydrometallurgi...

    A. O. Bol’shikh, O. I. Tsybin, M. A. Bol’shikh… in Russian Metallurgy (Metally) (2020)

  4. No Access

    Article

    Behavior of Nickel and Copper Sulfides and Their Mixtures in Sulfuric Acid Solutions

    The behavior of nickel sulfide (Ni3S2), copper sulfide (Cu2S), and their mixture (Ni3S2 : Cu2S = 1 : 1) is studied under the leaching conditions in sulfuric acid solutions. The effects of the acid concentration, ...

    A. O. Bol’shikh, O. I. Tsybin, V. G. Leont’ev… in Russian Metallurgy (Metally) (2020)

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    Article

    Improved Electrodialysis Synthesis of Perrhenic Acid from the Electrolytes of Processing the Wastes of Tungsten–Rhenium Alloys

    The voltage drops across the elements of a three-chamber electrolytic cell are measured during the synthesis of perrhenic acid from potassium perrhenate, and the main contribution to the total bath voltage is ...

    O. G. Kuznetsova, A. M. Levin, M. A. Sevost’yanov… in Russian Metallurgy (Metally) (2020)