Conclusions
As the result of the physicochemical reaction between the zirconia coating applied to the lining of the submergible lances for addition of magnesium to molten iron in desulfurization of it and the molten metal and slag a dense crust of particles of zirconia and the nonmetallic phase formed as the result of the chemical reaction of the zirconia and the binder with the slag contained in the ladle with the molten iron is formed in the layer of coating. This prevents penetration of molten metal into the pores and cracks of the lining, reduces oxidation of its carbon-containing components, and increases life.
Application of the zirconia coating to the lance lining eliminates manual coating of it with a refractory compound after treatment of iron.
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Translated from Ogneupory, No. 5, pp. 46–48, May, 1988.
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Dneprenko, N.N., Drozdon, G.M. & Kurilova, T.P. Action of iron and slag on the zirconia coating of the lining of submerged lances. Refractories 29, 321–324 (1988). https://doi.org/10.1007/BF01293372
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DOI: https://doi.org/10.1007/BF01293372