Pan, Xiaowei2019-08-292019-08-291998https://hdl.handle.net/10539/27937A thesis submitted to the Faculty of Engineering, University of the Witwatersrand, Johannesburg In fulfillment of the requirements of the degree of doctor of philosophy.In the present investigation, the multi-phase equilibria relevant to ferrochromium refining and stainless-steel making have been made in terms of gas-metal equilibria in alumina crucible and gas-slag-metal equilibria in chrornium-oxxie crucible and silica crucible, elucidated by 73 figures in forms of silicon distribution, sulphur partition and chromium distribution. (Abbreviation abstract)enMetals -- Refining.Stainless steel.Ferritic steel.Slag.Thesis