INDUCTION SMELTING PROCESS .1. MATHEMATICAL FORMULATION

The induction smelting process is a direct smelting process in which s elf-fluxed composite pellets (made of iron ore, brown coal, lime) are melted in a single phase induction furnace in conjunction with top blo wn oxygen/air. Several direct smelting processes have been reported in the literature, but only a few fundamental studies are available. The refore, a mathematical model has been developed for an induction smelt ing process which has three distinct regions: (i) the electromagnetica lly stirred or liquid region, (ii) the liquid-solid interaction (bed) region, and (iii) the gas jet and solid interaction region. Each regio n involves the consideration of non-steady state energy and species ba lances with steady state momentum transfer. The electromagnetic body f orce has been calculated numerically for the liquid region. To describ e the heat, mass, and momentum balance in the bed region a relatively new approach, known as a cell model, has been adopted. All regions hav e been linked by an overall heat and mass balance for the entire smelt ing process. An outline of the computational procedure is also given.