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http://dx.doi.org/10.7844/kirr.2014.23.1.58

A Study on Roasting Refinement of Crude-ZnO from Electric Arc Furnace Steel Dust  

Yoon, Chi Hyun (R&D Center, BEFESA ZINC KOREA Co. Ltd.)
Lee, Myungwon (R&D Center, BEFESA ZINC KOREA Co. Ltd.)
Seo, Junghwa (R&D Center, BEFESA ZINC KOREA Co. Ltd.)
Yoon, Jaehong (R&D Center, BEFESA ZINC KOREA Co. Ltd.)
Publication Information
Resources Recycling / v.23, no.1, 2014 , pp. 58-63 More about this Journal
Abstract
Variety of volatile materials is present in crude-Zinc oxide recovered from EAFD(Electric arc furnace steel dust). Commonly, it is purified by oxidizing roasting. In this study, spherical each specimen prepared crude-zinc oxide like 1~3 mm and 10 mm was tested in vertical tube furnace at the temperature range $600^{\circ}C$ to $1200^{\circ}C$ in oxidizing atmosphere. Oxidizing roasting properties of zinc oxide were investigated using XRD, XRF and ICP-OES. At temperature blow $950^{\circ}C$ volatilization rate were remarkably low. As the temperature increases, the concentration of Zn increased and the concentration and XRD peaks of impurities decreased. The result indicated that volatilization rate depended on specimen size and roasting temperature.
Keywords
Roasting; Crude Zinc Oxide; EAFD; Recycling;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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