A thermodynamic model of nickel smelting and direct high-grade nickel matte smelting processes: Part II. distribution behaviors of Ni, Cu, Co, Fe, As, Sb, and Bi |
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Authors: | Pengfu Tan PhD Dieter Neuschütz |
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Affiliation: | (1) the Institute of Theoretical Process Metallurgy, Aachen University of Technology (RWTH Aachen), Kopernikusstr. 16, D-52056 Aachen, Germany |
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Abstract: | A thermodynamic model has been developed to predict the distribution behavior of Ni, Cu, Co, Fe, S, As, Sb, and Bi in nickel
smelting and direct high-grade nickel matte smelting processes. The model has been validated by numerous experimental data
and industrial data with a wide range of operating conditions. The effect of operating conditions on the distributions of
Ni, Cu, Co, As, Sb, and Bi among the gas, matte, and slag phases has been investigated. It was found that the distribution
behavior of Ni, Co, Cu, As, Sb, and Bi in the nickel smelting furnace depends on process parameters such as the smelting temperature,
matte grade, oxygen enrichment, Fe/SiO2 ratio in the slag, Cu/Ni ratio in charge, and oil/air ratio. The parameters also have an influence on the behavior of Fe3O4 in the slag. |
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