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Utilisation of oily mill scale sludge as scrap resource
Luleå tekniska universitet.
Luleå tekniska universitet.
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, 1423-1430 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents the results of reduction trials of oily mill scale sludge. Laboratory experiments and two campaigns in a pilot plant rotary kiln have been carried out. The results indicate that it's possible to reduce oily mill scale sludge to sponge iron in the rotary kiln. The first pilot plant campaign was carried out with a mix of 75 wt-% mill scales and 25 wt-% mill scale sludge. During the second campaign 100 wt-% oily mill scale sludge were mixed with blast furnace flue dust and reduced. Petroleum coke has been used as the main reductant in both campaigns. Smelting trials of the sponge iron product have also been carried out in a production EAF. The sponge iron was charged into the scrap bin in big-bags. These trials showed that the degree of metallization of the sponge iron must be higher than 55% to avoid an increased iron oxide content in the slag, i.e. a low iron yield to the metal

Place, publisher, year, edition, pages
1999. 1423-1430 p.
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-39953Local ID: ee5e1ad0-fcbf-11dc-a946-000ea68e967bOAI: oai:DiVA.org:ltu-39953DiVA: diva2:1013473
Conference
Global Symposium on Recycling, Waste Treatment and Clean Technology : 05/09/1999 - 09/09/1999
Note
Godkänd; 1999; 20080328 (cira)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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