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Fine screening with electrically heated screen decks: report over initial tests and their evaluation
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
LKAB/Minelco.
2010 (English)In: Conference in Minerals Engineering: Luleå, 2 -3 februari 2010 / [ed] Johanna Alatalo, Luleå: Luleå tekniska universitet, 2010, 155-168 p.Conference paper, Published paper (Other academic)
Abstract [en]

Minelco by LKAB, Technology and Business Development, has commissioned Mineral Processing at LTU to conduct a series of investigations with a new screening device hitherto not used by LKAB. The screen, Mogensen Sizer G054 with electrically heated decks, was during the trials located in the pilot plant at Mineral Processing, where a test station was built for it. The purpose of the investigations was to test some specific applications, and to prepare a standard test procedure for evaluating screening tests with a Mogensen Sizer. 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 tests show that 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. The direct effect of the level of heat is not yet clear. There appears to be some threshold level for the heating, 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 not known.

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2010. 155-168 p.
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
URN: urn:nbn:se:ltu:diva-37662Local ID: bbfac2f0-6324-11df-ab16-000ea68e967bISBN: 978-91-7439-097-1 (electronic)OAI: oai:DiVA.org:ltu-37662DiVA: diva2:1011160
Conference
Konferens i mineralteknik 2010 : 02/02/2010 - 03/02/2010
Note
Godkänd; 2010; 20100519 (ysko)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-11-25Bibliographically approved

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