Molten Salt-Based Carbon-Neutral Critical Metal Smelting Process From Oxide Feedstocks

• 발행기관: 한국방사성폐기물학회
• 저자명: Wan-Bae Kim Woo-Seok Choi Gyu-Seok Lim Vladislav E. Ri Soo-Haeng Cho Suk-Cheol Kwon Hayk Nersisyan Jong-Hyeon Lee
• 간행물 정보: 『Journal of Nuclear Fuel Cycle and Waste Technology (JNFCWT)』Vol.21 No.1, 9~22쪽, 전체 14쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2023.03.30

국문 초록

Spin-off pyroprocessing technology and inert anode materials to replace the conventional carbon-based smelting process for critical materials were introduced. Efforts to select inert anode materials through numerical analysis and selected experimental results were devised for the high-throughput reduction of oxide feedstocks. The electrochemical properties of the inert anode material were evaluated, and stable electrolysis behavior and CaCu generation were observed during molten salt recycling. Thereafter, CuTi was prepared by reacting rutile (TiO2) with CaCu in a Ti crucible. The formation of CuTi was confirmed when the concentration of CaO in the molten salt was controlled at 7.5mol%. A laboratory-scale electrorefining study was conducted using CuTi(Zr, Hf) alloys as the anodes, with a Ti electrodeposit conforming to the ASTM B299 standard recovered using a pilot-scale electrorefining device.

키워드

Pyroprocessing Electroreduction Electrorefining Eco-friendly process High-purity titanium Molten salt