The matrix model of the TSL base metals converter demonstrated in this study has to a large extent accomplished in predicting the critical process input parameters necessary to produce matte, slag and offgas of desired quality. The model also further discussed the effects of change of operating variables on process inputs requirements and volumes and quality of the outputs. However further work may be required for a complete process representation. To improve on this matrix model, the following is recommended;
• Model validation has been performed through comparison of the matrix model results and the actual plant operating data from one of the smelters. Due to restrictions of change that can be made on the plant, further validation using data from various operations is required to gain complete confidence in the matrix model results.
• The mass and energy balance did not include the dilution air into the process which is a key operating variable in most smelting processes. The effect of dilution air into the furnace environment must be included in future models of the TSL base metal converter. • The temperatures of the product matte, slag and offgas were assumed to be the same,
however in actual plant processes they are at slightly different temperatures hence it is recommended that further modeling must take into consideration the difference in matte, slag and offgas temperatures.
• The mass and heat loss balances used in the model were for the copper crucible of dimensions 4.4m internal diameter and 4.5m height which is situated at the bottom of the TSL furnace where bath process reactions take place. It is recommended that the mass and heat balance equations be expanded on the entire TSL furnace to include the omitted inputs of roof coal, shroud air and oxygen.
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