Details

Autor(en) / Beteiligte

• Ahmadi, Eltefat
• Suzuki, Ryosuke o.
• Kaneko, Takumi
• Kikuchi, Tatsuya

Titel

A Sustainable Approach for Producing Ti and TiS2 from TiC

Ist Teil von

• Metallurgical and materials transactions. B, Process metallurgy and materials processing science, 2021-02, Vol.52 (1), p.77-87

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• TiC was examined as a starting material for Ti metal production by sulfidation and electrochemical reduction in molten salt. The sulfur evaporation temperature, sulfidation temperature, and time were optimized in a dual-zone furnace for the efficient and sustainable formation of TiS 2 as well as carbon removal from TiC by S 2 gas sulfidation. A mixture of TiS 2 and Ti 2.45 S 4 powders was synthesized from TiC at 1200 °C, and a perfect carbon removal was achieved to a very clean level as low as 0.025 mass pct C. The sulfides derived from TiC were then electrochemically reduced in molten CaCl 2 -0.5 mol pct CaS salt. The spherical shape Ti powder consisting of high-purity Ti sheets was obtained from TiS 2 without the carbon contamination. This method might be applied for sustainable recycling of waste carbides and for production of low-cost Ti powders via TiC or TiO x C y N z from the titanium ore.