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Characterisation and reduction studies of the waste pickling sludge of stainless steel
Luleå tekniska universitet.
Luleå tekniska universitet.
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, p. 1493-1501Conference paper, Published paper (Refereed)
Abstract [en]

Pickling sludges from Avesta Sheffield AB, Sweden and Sandvik Steel AB, Sweden, have been studied in this work. The chemical characterisation of the sludges have been made by chemical analysis, X-ray diffraction analysis, particle size distribution, scanning electron microscopy and thermal analysis. These two sludges have many common characteristics. The dry matter in the filter cakes heated up at 120°C is about 35-40%. After drying at 120°C the sludges still contain between 10-15% water, which evaporates in the temperature range 120-600°C. The mean particle size is about 3.7 μm for both sludges. The filter cakes are amorphous. Several crystalline phases were identified after heating. Scanning electron microscopy studies show that the elements Fe, Ni, Cr, F, Ca are evenly distributed in the particles. The reduction properties of the sludges with petroleum coke have been studied in laboratory scale. The metallization degree of iron and nickel reached 90-99% and 75-97%, respectively. Influence of retention time and amount of reductant as well as need of protecting agent were also investigated

Place, publisher, year, edition, pages
1999. p. 1493-1501
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-27641Scopus ID: 33488865Local ID: 126d6350-fcd3-11dc-a946-000ea68e967bOAI: oai:DiVA.org:ltu-27641DiVA, id: diva2:1000829
Conference
Global Symposium on Recycling, Waste Treatment and Clean Technology : 05/09/1999 - 09/09/1999
Note

Godkänd; 1999; 20080328 (cira)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-02-06Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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