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A laboratory study on smelt-reduction of briquettes made of wastes from stainless steel production
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
1999 (English)In: REWAS '99: Global Symposium on Recycling, Waste Treatment and Clean Technology : proceedings of the "REWAS'99: Global Symposium on Recycling, Waste Treatment and Clean Technology", held in San Sebastián, Spain, September 5 - 9, 1999 : TMS Fall 1999 Extraction and Process Metallurgy Meeting / [ed] I. Gaballah, 1999, 1061-1072 p.Conference paper (Refereed)
Abstract [en]

Wastes from stainless steel production were briquetted together with carbon for smelt-reduction in the electric arc furnace, EAF, to achieve an internal recycling. A laboratory induction furnace was used to simulate the EAF to study the disintegration of the briquettes under heating and recovery of metals from briquettes melted together with stainless steel and slag-former. The influences of test conditions on carbon reduction of oxides in the briquettes were also examined. The briquettes endured heating at 1186°C under load and could be charged to the melt in small quantity without causing serious splashing. For a high metal recovery, it was necessary to charge the briquettes together with slag-former. Small local zones of smelt-reduction with high carbon concentration could thus be formed during heating. Silicon content in the metal near to the briquettes should be minimised to achieve a high degree of carbon reduction. Based on results obtained from this study, suggestions were made on smooth operations of smelt-reduction of the briquettes by using electric arc furnaces of large scale

Place, publisher, year, edition, pages
1999. 1061-1072 p.
Research subject
Process Metallurgy
URN: urn:nbn:se:ltu:diva-37276Local ID: b4019c00-fca5-11dc-a946-000ea68e967bOAI: diva2:1010774
Global Symposium on Recycling, Waste Treatment and Clean Technology : 05/09/1999 - 09/09/1999

Godkänd; 1999; 20080328 (cira)

Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-02-06Bibliographically approved

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