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Fine screening with electrically heated screen decks
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.ORCID iD: 0000-0002-8032-9388
R&D Mineral Processing, LKAB.
2011 (English)Conference paper, Oral presentation only (Other academic)
Abstract [en]

The purpose was to test some specific applications with electrically heated screen decks, and to prepare a standard test procedure for evaluating probalistic screens. One application was the production of magnetite -1 mm from sinter fines, where very strong consolidation effects were discovered and had to be taken into consideration. Specifically, consolidated sinter fines with moisture content more than 1 % gave high losses.The best way to evaluate the screening results is to plot the proportion of finished product, and the loss of the correct fraction as a function of feed rate and moisture content. These being quantity results, they need to be supplemented with quality parameters, and the best seem to be the weight percentage of too coarse and too fine particles in the finished product. There appears to be some threshold level for the heating effect, but to what extent this is related to the screen deck type, the heat capacity and density of the material, or the particle size, is still unclear.

Place, publisher, year, edition, pages
2011.
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
URN: urn:nbn:se:ltu:diva-29609Local ID: 32291448-51e9-4eea-9bdf-e7ad0920cda5OAI: oai:DiVA.org:ltu-29609DiVA, id: diva2:1002833
Conference
Physical Separation '11 : 22/06/2011 - 24/06/2011
Note
Godkänd; 2011; 20111229 (palle)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-02-28Bibliographically approved

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