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Zhilina, S. K. E., Russkih, E. Z. A., & Osinkina, T. (2020). Selection of Elements at the Dissolution of Heat Resistant Nickel Alloys in Mineral Acid Solutions. KnE Materials Science, 6(1), 307–311. https://doi.org/10.18502/kms.v6i1.8096

https://doi.org/10.18502/kms.v6i1.8096

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authors

  • S.A. Krasikov, E.M. Zhilina

    S.A. Krasikov, E.M. Zhilina

    nstitute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, 101, Amundsen street, Ekaterinburg, Russia
  • E.M. Zhilina, A.S. Russkih

    E.M. Zhilina, A.S. Russkih

    nstitute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, 101, Amundsen street, Ekaterinburg, Russia
  • T.V. Osinkina

    T.V. Osinkina

    Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, 101, Amundsen street, Ekaterinburg, Russia

Published Date

  • Dec 31, 2020

Selection of Elements at the Dissolution of Heat Resistant Nickel Alloys in Mineral Acid Solutions

KnE Materials Science / IV Congress “Fundamental Research and Applied Developing of Recycling and Utilization Processes of Technogenic Formations” Volume 2020 / Pages 307–311

Abstract




Thermodynamic modeling of the interaction of a heat-resistant nickel alloy containing refractory rare metals with hydrochloric, sulfuric and nitric acids with a temperature change in the range of 20-100 ∘ C and a concentration of 50 to 150 g / dm3 at a pressure of 1 atm was carried out. The thermodynamic assessment data were confirmed in experiments on the anodic dissolution of the alloy in sulfate solutions. According to the results of x-ray phase analysis of the sludge, it was revealed that tungsten in the form of a solid solution in nickel passes to this product. Also, tantalum and niobium pass into the slurry in the form of oxides. Mostly, Re, Co, Cr passed into the electrolyte solution. The results of the study can serve as a scientific basis for the development of promising technologies for processing metal waste from heat-resistant alloys.





Keywords: thermodynamic modeling, heat resistant nickel alloy, rare elements, mineral acids, dissolution







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