Browse > Article

Comparison of Two-Types Compositions of Mixed Salts in Fused Salt Electrolysis of Magnesium  

Park, Hyung-Kyu (Korea Institute of Geoscience and Mineral Resources)
Park, Jin-Tae (Korea Institute of Geoscience and Mineral Resources)
Choi, Young-Yoon (Korea Institute of Geoscience and Mineral Resources)
Publication Information
Resources Recycling / v.15, no.2, 2006 , pp. 32-36 More about this Journal
Abstract
Magnesium has been used as light and functional material, and its demand is increasing as a material for automobile engine and for mobile phone or notebook PC case. Fused salt electrolysis and thermal reduction are regarded as main methods for the extraction of magnesium, and choice for the method is firstly according to raw material. In this study, magnesium metal is obtained by an electrolysis of magnesium chloride. Two types of fused salt mixtures were used as electrolyte and electrolyzed at 7V with a graphite anode having the same depth, and their results were compared with each other. A mixed salt of $KCl/NaCl/MgCl_2$ was the more effective than $KCl/NaCl/CaCl_2/CaF_2/MgCl_2$ in current efficiency through the experiments at $760^{\circ}C$. Purity of the prepared magnesium metal was above 98%. Some basic data for scale-up of the magnesium electrolysis equipment, which would be necessary for a commercialization, could be obtained.
Keywords
magnesium; magnesium chloride; fused salt electrolysis; salt composition; current efficiency;
Citations & Related Records
연도 인용수 순위
  • Reference
1 S. Ramakrishnan, P. Koltun, 2004: Magnesium Technology 2004, pp. 173-178, Ed. by A.A. Luo, TMS, 미국
2 小島l場 외, 2000: 마그네슘기술편람, 일본마그네슘협회편, pp.1-20, KALLOS출판(주), 東京, 일본
3 Byron, B. Clow, 2002: Magnesium Technology 2002, pp. 3-5, Ed. by H.I. Kaplan, TMS, 미국
4 박평주 외, 1980: 비철제련공학, 대한금속학회편, pp. 441-488, 회중당, 서울
5 韓國動力資源硏究所, 1986:연구보고서 KR-86-12, Ti제련공정연구(III), p.99-115