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2011-Sustainable Industrial Processing Summit
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| Editors: | Florian K |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2012 |
| Pages: | 754 pages |
| ISBN: | 978-0-9879917-3-7 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
Study Of Fluid Flow In Magnesium Electrolytic Cell In The Kroll Process
Go-Gi Lee1; Hyun-Na Bae2; Seon-Hyo Kim2;1RIST, Pohang, Korea, South; 2POSTECH, Pohang, Korea, South;
Type of Paper: Regular
Id Paper: 118
Topic: 12
Abstract:
Kroll process is a well-known extraction process which produces titanium. It consists of 4 steps containing chlorination, reduction, vacuum distillation, electrolysis. Electrolysis process is not directly related to production of metal titanium, but it has an important role being recycling of by-product, magnesium chloride. During this electrolysis process, metal magnesium is oxidized at cathode and chloride gas is reduced at anode. Chloride in forms of bubble makes various flows in the molten magnesium electrolytic cell. Flow is a significant factor that determines efficiency of process. Therefore, a three-dimensional mathematical model was developed to investigate the flow of the molten magnesium salt, and validated against data of pilot scale experiment. The model predicted the flow field with applying change of variable such as cell temperature, distance between electrodes, and design of electrode. And operating parameters which optimize the electrolysis process was suggested by simulation for productivity and cost savings.