The Swebrec© function: linking fragmentation by blasting and crushing
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
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.
Civil engineering and architecture - Geoengineering and mining engineering
Samhällsbyggnadsteknik och arkitektur - Geoteknik och gruvteknik
Research subject Mining and Rock Engineering
IdentifiersURN: urn:nbn:se:ltu:diva-10504DOI: 10.1179/037178405X44539Local ID: 950c4de0-86d1-11db-8975-000ea68e967bOAI: oai:DiVA.org:ltu-10504DiVA: diva2:983449
Validerad; 2005; 20061107 (ysko)2016-09-292016-09-29Bibliographically approved