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Waste Management & Research, Vol. 19, No. 4, 271-275 (2001)

Electric arc furnace dust treatment: investigation on mechanical and magnetic separation methods

Robert Sekula

ABB Corporate Research, ul. Starowislna 13A Kraków, Poland

Maciej Wnek

ABB Corporate Research, ul. Starowislna 13A Kraków, Poland

Adrian Selinger

ABB Corporate Research, CH-54-05 Baden-Dattwil, Switzerland

Miroslaw Wróbel

Academy of Mining and Metallurgy, al. Mickiewicza 30, Kraków, Poland

Electric arc furnace dust (EAFD) is a major issue for processing technologies: Several million tons per year are generated, it contains both valuable and hazardous metals and yet no available treatment process has proven to be superior to all others. Processes currently applied or being developed are either of hydro- or pyrometallurgical type, which are very costly.

In the paper testing of some physical separation methods of electric arc furnace dust from Polish steel industry were investigated. SEM, EDX analyses as well as grain size observations of dust particles were additionally performed. All investigations confirmed a possibility of effective magnetic and mechanical separation of EAFD particles.

Key Words: EAF dust • separation • heavy metals • sieving • sifting


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