Resumo

STEENKAMP, J.D.. Wear analysis of tap-holes at two ferrochromium production furnaces. J. S. Afr. Inst. Min. Metall. [online]. 2019, vol.119, n.6, pp.537-544. ISSN 2411-9717.  https://doi.org/10.17159/2411-9717/669/2019.

In July of 2016 and June 2017, major tap-hole repairs were carried out during the annual shutdown of two 63 MVA submerged arc furnaces producing ferrochromium in South Africa. The hot excavations of the tap-holes allowed for a study of the wear profiles. Subsequent thermodynamic calculations allowed for the quantification of the potential for chemical reaction between refractory and slag or alloy contributing to wear in the tap-hole area. Results from both wear profiling and thermodynamic calculations are reported here.

Palavras-chave : ferrochromium furnace; tap-hole; wear analysis; refractory corrosion.

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