Abstract
It is important to develop technologies for the production of master alloys for industrial applications. Detailed research on reduction of titanium from Egyptian ilmenite by an aluminothermic process in a graphite Crucible was charged by the mixture of ilmenite, flux, aluminum was investigated. This paper study the effect of aluminum feed (10%- 35%), flux material (type, and amount), and temperature preheat from 50 o C to 400 o C and time of preheating from 0.5 hr. to 3 hrs. Then, the metallic samples formed by the reduction were analyzed using X-ray diffraction, scanning electron microscopy. The mixed fluxes were strongly and successfully reduced ilmenite to a high-purity master alloy with small amounts of detected impurities. Key words: Aluminothermic, Egyptian ilmenite, flux, ferrotitanium, master alloy DOI : 10.7176/CMR/11-7-04 Publication date :September 30 th 2019
Highlights
In the past decade, intensive investigations have led to a new direct route for the extraction of metals and alloys from their oxides by using molten salt electrolysis
Some promising techniques associated with metallothermic and electrochemical deoxidization routes such as the Fray-Farthing-Chen (FFC) Cambridge process [1], electrolysis-assisted calciothermic reduction process [2], the Electronically Mediated Reaction (EMR) process [3] the Preform Reduction (PRP) process [4], and the Solid Oxide-Oxygen-Ion Conducting Membrane (SOM) process [5] have been introduced for direct reduction of oxides[6]
Ilmenite was analyzed by both of XRF and XRD that we can see from the chemical analysis of ilmenite (Table 1), the concentration of TiO2 reached about 39.7 % which meaning its low grade ilmenite but from the XRD pattern (Fig. 2), we can notice that ilmenite has not the pseudo-mineral Leucoxene which is more harder than ilmenite in the reduction process
Summary
Intensive investigations have led to a new direct route for the extraction of metals and alloys from their oxides by using molten salt electrolysis.
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