KnE Materials Science

ISSN: 2519-1438

The latest conference proceedings on physical materials, energy materials, electrical materials.

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

Published date: Dec 31 2020

Journal Title: KnE Materials Science

Issue title: IV Congress “Fundamental Research and Applied Developing of Recycling and Utilization Processes of Technogenic Formations” Volume 2020

Pages: 307–311

DOI: 10.18502/kms.v6i1.8096

Authors:

S.A. Krasikov, E.M. ZhilinaEmail: sankr@mail.ru
Affiliation: nstitute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, 101, Amundsen street, Ekaterinburg, Russia
Biography:

E.M. Zhilina, A.S. RusskihEmail: N/A
Affiliation: nstitute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, 101, Amundsen street, Ekaterinburg, Russia
Biography:

T.V. OsinkinaEmail: N/A
Affiliation: Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, 101, Amundsen street, Ekaterinburg, Russia
Biography:

S.A. Krasikov, E.M. Zhilina - sankr@mail.ru

E.M. Zhilina, A.S. Russkih

T.V. Osinkina

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

References:

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[8]Russkih, A. S., et al. (2019). Thermodynamic Modeling of the Distribution of Rare Elements at the Dissolution of Wastes for Heat-Resistant Nickel Alloys in Mineral Acids. Butlerov communications, vol. 59, issue 7, pp. 99-103.

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