Abstract
The interaction mechanisms between resin-bonded MgO-C bricks and vanadium-recovery slag by a static crucible slag test are investigated. Oxidation of carbon is observed, which results in pores, cracks and voids for the penetration of the vanadium-recovery slag. Periclase grains are seriously infiltrated by the slag, which leads to the disintegration and removal of MgO subgrains from the slag. Forsterite is formed and EDS confirmed that it has some FeO and MnO content. EDS confirms that there are few vanadium-containing compounds, and most vanadium exists in the form of glassy phases, which are liquid at high temperature. More low-melting point species are formed in the slag or as the result of the reaction of slag and refractory components, which is deleterious to slag resistance. Furthermore, the diffused FeO content in periclase gradually decreases from the hot face into the inner area. No diffused MnO is detected in periclase.
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