Interaction mechanism between refractory and melts in iron bath smelting reduction process

Abstract

The corrosion behavior of three sorts of refractories based on alumina-graphite were studied by immersion tests. The melts included smelting reduction molten slag and corresponding carbon saturated molten iron. The influence of test temperature, FeO content in slag and specimen rotative velocity on the corrosion rate of refractories was examined. By means of SEM and EDS, the microstructure change of the refractories after immersion test in kinds of melts was studied. The morphology of the deteriorated layer showed the corrosion extent of refractories. With the addition of zirconia and titania into the refractories, the corrosion rate changed to some extent. The corrosion rate of three sorts of refractories increased dramatically with the increasing FeO content in smelting reduction slag. Compared with alumina-graphite refractory and alumina-graphite-zirconia refractory, alumina-graphite-titania refractory had stronger corrosion resistance in the smelting reduction conditions. By the results of SEM and EDS, the corrosion mechanism of refractories was developed

Research Progress with Scheelite Flotation Reagents: A Review

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Experimental investigation on the formation mechanism of the TiFe alloy by the molten-salt electrolytic titanium concentrate

“…Excepting for conventional production method, VAR [6,7], PAM [8,9], EBM [10][11][12], EBCHM [13], FFC based method comes into active using TiO 2 and Fe 2 O 3 mixture as electrolyte material with advantages of short procedure, low energy cost and small pollution [1,14]. There are some reports show ferrotitanium alloy can be produced by this method [1, 14,15,16,17,18,19,20], however, few study can be found about the formation mechanism of TiFe.…”