Recovery of metals from EAF dust with rapid system

Proceedings Third Russian-Korean International Symposium on Science and Technology. KORUS'99 (Cat. No.99EX362) Pub Date : 1999-06-22 DOI:10.1109/KORUS.1999.876187

Hyoung-ky Shin, Daehun Lee, S. Moon

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引用次数: 4

Abstract

ABSTRACT The dust generated from the electric arc furnace steel making process is classified as a hazardous wastes by Korean Environmental Protection Acts, mainly because of the existence of water soluble heavy metals (Pb, Zn and Cd). Thus the treatment of EAF dust is being carried out to fulfill both the environmental aspect and recovery of valuable metals. To establish the proper process for recovering the valuable metals (Fe, Zn, Pb and Cd) and producing the non-toxic slag from EAF dust, many processes have been proposed. The feasibility study using RAPID-10 system have been carried out to find out the scale-up factor for designing the commercial scale EAF dust treatment process (capacity: 50,000 ton EAF dust per year) entilted RAPID-50 system. The design and construction of RAPID-50 (RIST Arc Plasma Industrial Device) system for treating 50,000 ton of EAF dust per year is now undergoing. Overall plan for treating EAF dust generated in KOREA will be setup after successful operation (December, 2002) of RAPID-50 system.

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快速系统从电炉粉尘中回收金属

电弧炉炼钢过程产生的粉尘被韩国环境保护法列为危险废物，主要是因为其存在水溶性重金属(Pb、Zn和Cd)。因此，正在对电炉粉尘进行处理，以满足环境方面和有价金属的回收。为了建立回收有价金属(铁、锌、铅和镉)和从电炉炉灰中生产无毒炉渣的合适工艺，人们提出了许多方法。利用RAPID-10系统进行了可行性研究，以确定设计RAPID-50系统的商业规模电炉除尘工艺(年产5万吨电炉除尘)的放大系数。每年处理5万吨电弧炉粉尘的RAPID-50 (RIST电弧等离子体工业装置)系统的设计和建设正在进行中。韩国将在RAPID-50系统成功运行(2002年12月)后，制定处理电炉粉尘的总体计划。

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Proceedings Third Russian-Korean International Symposium on Science and Technology. KORUS'99 (Cat. No.99EX362)

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