2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 2: Gudenau Intl. Symp. / Iron and Steel Making
| Editors: | Kongoli F, Kleinschmidt G, Pook H, Ohno K, Wu K |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 340 pages |
| ISBN: | 978-1-987820-25-6 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Effect of Wet Magnetic Separation for Zinc Removal from BF Sludge
Chong-Lyuck Park1; Minsoo Shin2;1POSCO, Keumho-dong, Kwangyang-si, Korea (Republic of [South] Korea); 2POSCO, Kwangyang-si, Korea (Republic of [South] Korea);
Type of Paper: Regular
Id Paper: 208
Topic: 2
Abstract:
The processes for Zn oxides removal are divided between pre-treatment and separation. Zn oxides removal is very important because recycling of the BF sludge without dezincification can lead to accumulation of zinc in the BF. The first process involves mixing and ultrasonication for liberation of Zn oxide particles and Fe oxide particles, and the second process consists of froth flotation and wet magnetic separation (WMS). Kerosene was used as a collector, and MIBC was used as a frother for the froth flotation. Both of the reagents were very effective to recovering carbon from the BF sludge. The carbon could be recovered up to 82.3 %, and the carbon content of recovered product was improved from 32.9 % to 84.0 % under the optimum conditions for the froth flotation. The WMS could improve a T.Fe from 19.72 % to 56.96 %, and removed ZnO from 17.35 % to 12.72 %. The T.Fe recovery ratio was 56.96 %, and the ZnO removal was 89.2 % under the optimum condition for the WMS.
Keywords:
Blast Furnace sludge; Zinc removal; Wet magnetic separation; RecyclingReferences:
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