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Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering. 2005 (English)In: Transactions - Institution of Mining and Metallurgy. Section A. Mining industry, ISSN 0371-7844, Vol. 114, no 1, 29-44 p.Article in journal (Refereed) Published

Abstract [en] : A new three-parameter fragment size distribution function has been found that links rock fragmentation by blasting and crushing. The new Swebrec© function gives excellent fits to hundreds of sets of sieved fragmentation data with correlation coefficients of 0·997 or better (r2>0·995) over a range of fragment sizes of 2–3 orders of magnitude. A five-parameter version reproduces sieved fragmentation curves all the way into the –100 m range and also handles ball mill grinding data. In addition, the Swebrec© function: (i) can be used in the Kuz–Ram model and removes two of its drawbacks – the poor predictive capacity in the fines range and the upper limit cut-off to block sizes; (ii) reduces the JKMRC one-family description of crusher breakage functions based on the t10 concept to a minimum; and (iii) establishes a new family of natural breakage characteristic (NBC) functions with a realistic shape that connects blast fragmentation and mechanical comminution and offers new insight into the working of the Steiner's OCS sub-circuits of mechanical comminution. It is suggested that the extended Kuz–Ram model, with the Swebrec© function replacing the Rosin–Rammler function, be called the KCO model.

Place, publisher, year, edition, pages: 2005. Vol. 114, no 1, 29-44 p.

Keyword [en] : Civil engineering and architecture - Geoengineering and mining engineering

Keyword [sv] : Samhällsbyggnadsteknik och arkitektur - Geoteknik och gruvteknik

Research subject: Mining and Rock Engineering

Identifiers: URN: urn:nbn:se:ltu:diva-10504DOI: 10.1179/037178405X44539Local ID: 950c4de0-86d1-11db-8975-000ea68e967bOAI: oai:DiVA.org:ltu-10504DiVA: diva2:983449

Note: Validerad; 2005; 20061107 (ysko)Available from: 2016-09-29 Created: 2016-09-29Bibliographically approved



Autor: Ouchterlony, Finn

Fuente: http://ltu.diva-portal.org/







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