ORAL
| SESSION: RecyclingWedPM-R4 | 5th Intl. Symp. on Sustainable Materials Recycling Processes and Products |
| Wed Oct, 25 2017 | Room: Peninsula 4 |
| Session Chairs: Juergen Antrekowitsch; Stefan Wegscheider; Session Monitor: TBA |
14:30: [RecyclingWedPM05]
Recycling of Jarosite and Electric Arc Furnace Dust in a Metal Bath Process to Recover Valuable Metals Stefan
Wegscheider1 ;
Juergen
Antrekowitsch2 ; Stefan
Steinlechner
3 ;
1Montauniversitaet Leoben, Leoben, Austria;
2Christian Doppler Laboratory for Optimization and Biomass Utilization in Heavy Metal Recycling, Leoben, Austria;
3Chair of Nonferrous Metallurgy, Leoben, Austria;
Paper Id: 57
[Abstract] The recycling of hazardous metallurgical waste, such as jarosite, a precipitation residue from the hydrometallurgical zinc winning route and electric arc furnace dust (EAFD) from the iron and steel industry displays one aim for the future to open up new chances for secondary resources and to avoid landfilling. More than 50 % of the worldwide production of EAFD and the majority of the jarosite are still dumped, although there are valuable metals, such as zinc, lead, indium, silver and iron present in these by-products.
Since the EAFD and the jarosite represent a high economical potential, a metal bath process offers a possibility to reprocess both residues together and to achieve a multi-metal recovery. The advantages of the process are that two residues can be treated together to recover valuable metals, while at the same time no more dumping of the waste is necessary. The products of the process include a metal-bearing off-gas, an iron alloy as well as a slag. This paper describes the concept of the developed metal bath process and shows first results of carried out lab-scale trials.
