Abstract
The results of electrochemical processing of the ZhS32-VI refractory alloy in nitric acid solutions are discussed. The main production idea involves the performance of an electrochemical process under the controlled value of the anodic potential. This procedure provides the preferential transfer of nickel, which is the alloy base, into the solution and the formation of the cathodic product or metallic nickel with a purity no lower than 95%. Experiments on the electrochemical dissolution of the mentioned alloy at various values of the anodic potential are performed. It is determined that the cathodic product contains at E a = 1.05 V, %: Ni 94.9, Re 0.2, Co 4.7, and Cr 0.1. It is established that the incorporation of the chloride ion (20 g/L) into the nitric acid electrolyte exerts no substantial effect on process characteristics; notably, the amount of nickel in the anodic slime decreases from 2.4 to 1.6%, and no considerable increase in the nickel content in the cathodic product takes place. The exclusion is a considerable increase in the transfer rate of rhenium into the electrolyte; notably, the rhenium concentration in the nitric acid electrolyte after the 10-h production process is 1.26 g/L, and that in the nitric acid electrolyte with the addition of the chloride ion is 8.90 g/L. It is shown that the process performance of the electrochemical dissolution of Re-containing nickel-based refractory alloys under the controlled anodic potential E a = 1.05 V in nitric acid electrolytes provides the formation of a nickel concentrate with a purity no lower than 95% in one stage and makes it possible to concentrate rhenium in the anodic slime.
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References
World market of nickel. http://www.cmmarket.ru/markets/niworld.htm. Cited March 18, 2015.
Russian market of ores and concentrates of nonferrous metals and production for 2014. http://www.aurubisrus. ru/rus_non_ferrous_ores_market.html. Cited March 18, 2015.
Kasikov, A.G. and Petrova, A.M., Recycling of rhenium from waste heat-resistant and special alloys, Tekhnol. Met., 2010, no. 2, pp. 2–12.
Rockets do not fly without rhenium. http://rareearth.ru/ru/pub/20131111/00015.html. Cited March 18, 2015.
Lutz, L.J., Parker, S.A., and Stephenson, J.B., Recycling of contaminated superalloy scrap via electrochemical processing, TMS Annual Meeting, 1993, pp. 1211–1220.
Ramachandra, Rao S.R., Resource Recovery and Recycling from Metallurgical Wastes, vol. 7, Elsevier, 2006.
Palant, A.A., Bryukvin, V.A., Levin, A.M., and Levchuk, O.M., Integrated electrochemical technology waste heat-resistant nickel alloys containing rhenium, tungsten, tantalum, niobium and other precious metals, Metally, 2014, no. 1, pp. 25–27.
Palant, A.A., Brjukvin, V.A., Levchuk, O.M., Palant, A.V., and Levin, A.M., RF Patent 2 401 312, 2010.
Stoller, V., Olbrich, A., Meese-Marktscheffel, J., Mathy, W., Erb, M., Nietfeld, G., and Gille, G., FRG Patent 10 155 791, 2003.
Krynitz, U., Olbrich, A., Kummer, W., and Schloh, M., US Patent 5 776 329, 1998.
Stoller, V., Olbrich, A., Meese-Marktscheffel, J., Mathy, W., Erb, M., Nietfeld, G., and Gille, G., EEC Patent 1 312 686, 2008.
Srivastava, R.R., Kim, M., Lee, J., Jha, M.K., and Kim, B.S., Resource recycling of superalloys and hydrometallurgical challenges, J. Mater. Sci., 2014, vol. 49, no. 14, p. 4671.
Shipachev, V.A., Some process procedures for isolation and purification of rhenium from superalloys, Khim. Interes. Ustoich. Razvit., 2012, no. 20, pp. 365–368.
Palant, A.A., Bryukvin, V.A., and Levchuk, O.M., Integrated electrochemical processing of metal waste rhenium-containing heat-resistant nickel alloy in sulfuric acid electrolytes, Elektrometallurgiya, 2010, no. 7, pp. 29–33.
Petrova, A.M., Kasikov, A.G., and Gromov, P.B., Recovery of rhenium from waste complexly alloyed nickel-based superalloys, Tsvetn. Met., 2011, no. 11, pp. 39–43.
Gaidarenko, O.V., Chernyshov, V.I., and Chernyshov, Yu.I., RF Patent 2106620, 1998.
Palant, A.A., Troshkina, I.D., and Chekmarev, A.M., Metallurgiya reniya (Metallurgy of Rhenium), Moscow: Nauka, 2007.
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Original Russian Text © O.V. Chernyshova, D.V. Drobot, 2016, published in Izvestiya Vysshikh Uchebnykh Zavedenii, Tsvetnaya Metallurgiya, 2016, No. 5, pp. 17–23.
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Chernyshova, O.V., Drobot, D.V. Single-stage production of the nickel concentrate with processing of the rhenium-containing refractory alloy. Russ. J. Non-ferrous Metals 57, 665–669 (2016). https://doi.org/10.3103/S1067821216070051
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DOI: https://doi.org/10.3103/S1067821216070051