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http://dx.doi.org/10.7844/kirr.2021.30.2.46

Deoxidation of Off-grade Ti scrap by Molten Mg in YCl3-MgCl2 Molten Salt  

Jung, Jae-Heon (School of Materials Science and Engineering, Kyungpook National University)
Lee, So-Yeong (School of Materials Science and Engineering, Kyungpook National University)
Park, Sung-Hun (School of Materials Science and Engineering, Kyungpook National University)
Sohn, Ho-Sang (School of Materials Science and Engineering, Kyungpook National University)
Publication Information
Resources Recycling / v.30, no.2, 2021 , pp. 46-52 More about this Journal
Abstract
Off-grade Ti generated from smelting and mechanical processing has a high oxygen content. In this work, off-grade Ti was deoxidized using Mg and a chloride mixture as the reductant and flux, respectively. The experiments were conducted in the α-Ti temperature range (1,023~1,123 K) and the effects of the reaction time, reaction temperature, quantitiy of Mg and chloride ratio on deoxidation were investigated. Notably, when YCl3 is used as the flux to react with MgO, it is possible to reduce the activity of MgO. Therefore Ti can be deoxidized using Mg. In this study, the O content was decreased from 0.5 wt% to 0.1004 wt% at 1073 K, for 6 hours, with Mg=3.6 g and $X_{YCl_3}=0.22$.
Keywords
Titanium; scrap; de-oxidation; REM chloride; flux;
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