from the conferences organized by TANGER Ltd.
The quality of titania slag has been largely investigated using coke. However, the environmental threats caused by carbon emissions has opened a platform to investigate the use of other reductants and their impacts on the slag quality. The aim of this investigation is to correlate the impact of hydrogen used as reductant in the pre-reduction of ilmenite on the quality of the titania slag. Reduction is a pyro-metallurgical process where metal is extracted from its ore by heating and melting it at elevated temperatures in a furnace with the addition of fluxes and reductants. In this research paper hydrogen was used as reductant during prereduction of ilmenite. Argon was concomitantly blown in with hydrogen to dilute the explosive effect of hydrogen at high temperatures. A thermogravimetric analyser (TGA) was used to perform experiments at 800, 900 and 1000 ℃. The aim of using hydrogen was to assumably increase the rate of reactions. The good quality titania slag in the pre-reduced sample must contain high iron, low Ti2O3, high TiO2 and high mass loss. The optimal concentration of hydrogen was investigated firstly through prediction using Fact sage and confirmed secondly through TGA test. The fact sage predictions and TGA tests aligned well with one another. The optimal conditions for the prereduced ilmenite, were found to be 50:50 for the Ar:H2 ratio at 1000℃ for 180 minutes.
Keywords: Metallurgy, steel, properties, applications, testing methods© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.