Integrated recycling at Boliden's Rönnskär Smelter; formation of slag products
2012 (English)In: International Smelting Technology Symposium: Incorporating the 6th Advances in Sulfide Smelting Symposium, 2012, 117-124 p.Conference paper (Refereed)
Rönnskär Smelter of Boliden Mineral AB, Sweden, is a large end-processor of secondary raw materials and waste, including electronic scrap. Electronic scrap may introduce various impurities to the smelter's flow-sheet, among which alumina is a common and significant one. This article summarizes the results of an ongoing research at Luleå University of Technology, Sweden, to study the influences of alumina on different properties of slag from the zinc filming process at Rönnskär smelter. A combination of different experimental techniques and thermodynamic calculations have been used to investigate properties such as density, surface tension, effective thermal diffusivity, viscosity, and melting/leaching behaviors. Results show that the addition of alumina to this slag increases the degree of polymerization of the melt, and physical properties vary correspondingly. Mineralogy of the semi-rapidly solidified samples is also changed due to alumina addition. A correlation between mineralogy and leaching behavior can be observed.
Place, publisher, year, edition, pages
2012. 117-124 p.
Electronic scrap, Iron-silicate slag, Recycling, Thermophysical properties
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-100053ScopusID: 2-s2.0-84860824115ISBN: 978-111829116-0OAI: oai:DiVA.org:kth-100053DiVA: diva2:542769
International Smelting Technology Symposium, Incorporating the 6th Advances in Sulfide Smelting Symposium - TMS 2012 Annual Meeting and Exhibition;Orlando, FL;11 March 2012 through 15 March 2012
QC 201208032012-08-032012-08-032013-09-11Bibliographically approved