Abstract
A mathematical description of the variation of normalized concentrations of components in matte during converting has been proposed for a 50 ton converter of a Chinese nickel smelter. Two process parameters, molar ratio of desulfurization to deironization of matte converting, dnS⁄dnFe, and sulfur deficiency fraction of matte, δS, which characterize the matte converting process, have been deduced as a function of iron content in matte. Laboratory experiments and plant tests of further deironization of concentrated matte were carried out to obtain a final matte product with an iron content less than 1% and a sulfur content more than 20% by mass.
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