Abstract

The effect of magnesia and alumina crucible wear on the smelting characteristics of titaniferous magnetite

Highlights

  • Test work was conducted to investigate the effect of magnesia and alumina crucible wear in laboratory-scale smelting tests on titaniferous magnetite in terms of iron and vanadium recoveries as well as slag properties

  • The tests were conducted using the smelting recipe used by Evraz Highveld Steel and Vanadium Corporation (EHSV); that is, the same titanomagnetite feed material and a dolomite flux to achieve a typical CaO:MgO ratio of 16:14 in the slag

  • The results have shown that both magnesia and alumina crucibles can be used to conduct laboratory-scale test work using the reviewed slag chemical composition

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Summary

Table II

Titanomagnetite from the Main Magnetite Layer (MML) of South Africa’s Bushveld Complex deposit was supplied by EHSV. The typical bulk chemical composition of the titanomagnetite feed to the EHSV process was acquired from the literature (Steinberg et al, 2011), and that of the supplied sample was determined at Mintek. The chemical compositions show that the feed samples are from the same orebody.

Mintek test work EHSV operation
Table III
Table IV
Findings
Table V
Full Text
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