Next Article in Journal
PGlu-Modified Nanocrystalline Cellulose Improves Mechanical Properties, Biocompatibility, and Mineralization of Polyester-Based Composites
Next Article in Special Issue
Responses of Melilotus officinalis Growth to the Composition of Different Topsoil Substitute Materials in the Reclamation of Open-Pit Mining Grassland Area in Inner Mongolia
Previous Article in Journal
Fabrication of Superhydrophobic Magnetic Sawdust as Effective and Recyclable Oil Sorbents
Previous Article in Special Issue
Briquetting of Wastes from Pulp and Paper Industries by Using AOD Converter Slag as Binders for Application in Metallurgy
Open AccessArticle

Direct Reduction of Fe, Ni and Cr from Oxides of Waste Products Used in Briquettes for Slag Foaming in EAF

Department of Materials Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
*
Author to whom correspondence should be addressed.
Materials 2019, 12(20), 3434; https://doi.org/10.3390/ma12203434
Received: 14 September 2019 / Revised: 12 October 2019 / Accepted: 14 October 2019 / Published: 21 October 2019
(This article belongs to the Special Issue Environmentally Friendly Renewable Materials)
Environmental aspects and the sustainable manufacturing of steels require producers to pay more and more attention to the efficient utilization of materials and waste products during steelmaking. This study is focused on the evaluation of possibilities for the recovery of metals (such as Fe, Ni and Cr) from waste products used for slag foaming in the Electric Arc Furnace (EAF) process. Two types of industrial briquettes were produced by mixing mill-scale from the hot rolling of stainless steels with anthracite and pet-coke, respectively. Thereafter, an assessment of the metal reduction processes in briquettes at high temperatures (1500 °C) was made by using laboratory thermo-gravimetric reduction experiments in an argon atmosphere. The amounts of metal, slag and gas obtained from the briquettes were estimated. In addition, the velocity and time for the removal of metal droplets from the liquid slag depending on the size of the metal droplets was estimated. It was found that up to 97% of metal droplets can be removed from the slag during the first 30 min. Moreover, results showed that most of the Cr, Ni and Fe (up to 93–100%) can be reduced from oxides of these metals in briquettes at 1500 °C. Moreover, the anthracite and pet-coke in the investigated briquettes have similar reduction capabilities. It was found that up to 330 kg of Fe, 28 kg of Ni and 66 kg of Cr per ton of added briquettes can be recovered from waste products by the industrial application of those briquettes for slag foaming in EAF. View Full-Text
Keywords: EAF; stainless steel; slag foaming; waste products; recycling; briquettes EAF; stainless steel; slag foaming; waste products; recycling; briquettes
Show Figures

Figure 1

MDPI and ACS Style

Davydenko, A.; Karasev, A.; Glaser, B.; Jönsson, P. Direct Reduction of Fe, Ni and Cr from Oxides of Waste Products Used in Briquettes for Slag Foaming in EAF. Materials 2019, 12, 3434. https://doi.org/10.3390/ma12203434

AMA Style

Davydenko A, Karasev A, Glaser B, Jönsson P. Direct Reduction of Fe, Ni and Cr from Oxides of Waste Products Used in Briquettes for Slag Foaming in EAF. Materials. 2019; 12(20):3434. https://doi.org/10.3390/ma12203434

Chicago/Turabian Style

Davydenko, Arkadiy; Karasev, Andrey; Glaser, Björn; Jönsson, Pär. 2019. "Direct Reduction of Fe, Ni and Cr from Oxides of Waste Products Used in Briquettes for Slag Foaming in EAF" Materials 12, no. 20: 3434. https://doi.org/10.3390/ma12203434

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop