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vol.109 número10Automated SEM study of PGM distribution across a UG2 flotation concentrate bank: Implications for understanding PGM floatabilityThe effectiveness of current control of submerged arc furnace electrode penetration in selected scenarios índice de autoresíndice de assuntospesquisa de artigos
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Journal of the Southern African Institute of Mining and Metallurgy

versão On-line ISSN 2411-9717
versão impressa ISSN 0038-223X

Resumo

JONES, R.T.; GELDENHUYS, I.J.  e  REYNOLDS, Q.G.. Recovery of base metals and PGMs in a DC alloy-smelting furnace. J. S. Afr. Inst. Min. Metall. [online]. 2009, vol.109, n.10, pp.595-600. ISSN 2411-9717.

Base metals and platinum group metals can be collected in metallic alloy form, via a wide variety of smelting processes. The recovery, or degree of collection, of the valuable metals is a function of the extent of reduction in the furnace, which, in turn, is indicated by the fraction of iron present in the feed materials that report to the alloy. An equation has been developed that relates the recovery of various metals (such as Ni, Co, Cr, and PGMs) to the recovery of Fe. This recovery equation (for each metal) is characterized by a single parameter (Ky) that can either be empirically fitted to the data, or expressed in terms of the equilibrium constant and the ratios of the activity coefficients involved. Data from a number of varied DC arc furnace campaigns are presented to illustrate this behaviour.

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