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- Title
Continuous separation of Fe–Al–Zn dross phase from hot dip galvanised melt using alternating magnetic field.
- Authors
Dong, A. P.; Shu, D.; Wang, J.; Cai, X. C.; Sun, B. D.; Cui, J.; Shen, J. G.; Ren, Y. S.; Yin, X. D.
- Abstract
Experiments to continuously separate Fe–Al–Zn dross phase from hot dip galvanising zinc melt were conducted on a laboratory scale apparatus by using high frequency alternating magnetic field. Effects of processing time (t) on separation efficiency were investigated. The experimental results show that using the electromagnetic repulsive force resulting from the electrical conductivity difference between zinc melt and Fe–Al–Zn dross phase, the deleterious zinc dross particles causing surface defects of galvanising steel sheets can be continuously separated from the zinc bath under alternating magnetic field, and the separation efficiency increases with the increase in processing time. When the magnetic frequency is 17·5 kHz, the effective magnetic flux intensity is 0·1 T, the cross-section of the ceramic square pipe is 10 × 10 mm, and the processing time is 0·6–2·5 s, the separation efficiency of zinc dross varies from 43·76 to 85·71%, and the experimental results are in reasonable agreement with the theoretical results.
- Subjects
IRON; ALUMINUM; MAGNETIC fields; ZINC; CERAMICS; MAGNETIC flux
- Publication
Materials Science & Technology, 2008, Vol 24, Issue 1, p40
- ISSN
0267-0836
- Publication type
Article
- DOI
10.1179/174328407X248514