International Journal of Nonferrous Metallurgy

Volume 2, Issue 2 (April 2013)

ISSN Print: 2168-2054   ISSN Online: 2168-2062

Google-based Impact Factor: 0.63  Citations  

Factors Research on the Influence of Leaching Rate of Nickel and Cobalt from Waste Superalloys with Sulfuric Acid

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DOI: 10.4236/ijnm.2013.22008    5,565 Downloads   9,346 Views  Citations

ABSTRACT

Unlike the reported leaching technologies of waste superalloys, the process of the atomized spray-sulfuric acid leaching nickel and cobalt technology was put forward in the present work according to the compositions of waste superalloys. The effects of sulfuric acid temperature, concentration, leaching time, stirring speed and size of superalloys on leaching of Ni and Co from waste superalloys have been mainly investigated, and the optimum leaching conditions were determined and reported. The leaching rates for nickel and cobalt were 96.68% and 96.63%, respectively, and the contents of nickel and cobalt in leaching slag were 6.77% and 0.96%, respectively. The obtained leaching solution containing Ni and Co could be used for production of Ni and Co products after removal.

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Fan, X. , Xing, W. , Dong, H. , Zhao, J. , Wu, Y. , Li, B. , Tong, W. and Wu, X. (2013) Factors Research on the Influence of Leaching Rate of Nickel and Cobalt from Waste Superalloys with Sulfuric Acid. International Journal of Nonferrous Metallurgy, 2, 63-67. doi: 10.4236/ijnm.2013.22008.

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