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Study on the Remelting of Titanium Scrap by DC-ESR Process  

Seo, Yeung-Deuk (Department of Materials Science and Metallurgy, Kyungpook National University)
Lee, Ho-Seong (Department of Materials Science and Metallurgy, Kyungpook National University)
Sohn, Ho-Sang (Department of Materials Science and Metallurgy, Kyungpook National University)
Publication Information
Resources Recycling / v.16, no.4, 2007 , pp. 33-39 More about this Journal
Abstract
Titanium scrap was re-melted and refined by using a DC-ESR (Direct Current Electro Slag Remelting) apparatus. A graphite rod was used as an anode. The used slag was $CaF_2-TiO_2-CaO$ slag system. The effect of slag composition on the shape and oxygen content of re-melted ingot was studied. The titanium ingot was produced very well from the $CaF_2-TiO_2$ slag system, and the oxygen content of the ingot was less than that of titanium scrap. The addition of CaO into $CaF_2-TiO_2$ slag system made the bad shape of titanium ingot. The oxygen content of the ingot was also higher than that of titanium scrap.
Keywords
ESR; recycling; titanium scrap; titanium ingot;
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