University of Oulu

Yliniemi, J., Laitinen, O., Kinnunen, P. et al. J Mater Cycles Waste Manag (2018) 20: 1248.

Pulverization of fibrous mineral wool waste

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Author: Yliniemi, J.1; Laitinen, O.1; Kinnunen, P.1,2;
Organizations: 1Fiber and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
2Department of Civil and Environmental Engineering, Imperial College London, London SW7 2BU, UK
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 1.6 MB)
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Language: English
Published: Springer Nature, 2018
Publish Date: 2019-03-11


The total annual volume of mineral wool waste in the 27 European Union countries is expected to increase to 2.5 million tons per year by 2020. Unfortunately, mineral wool wastes are often considered unrecyclable, because their physical characteristics make them difficult to process. In many cases, the problem is caused by the material’s fibrousness. However, no studies have considered comminution methods for mineral wools. The objective of the present study is to investigate how various comminution mechanisms affect mineral wools’ physical characteristics, including appearance, bulk density, and fiber length and width. The study’s results show that compression-based methods (vibratory disc mill and hydraulic press) completely break down mineral wools’ fibrousness, whereas methods based on high cutting speeds affect bulk density and fiber length only moderately. In addition, the present study identifies a rapid method that can be used in a novel way to analyze a large number of mineral wool fibers.

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Series: Journal of material cycles and waste management
ISSN: 1438-4957
ISSN-E: 1611-8227
ISSN-L: 1438-4957
Volume: 20
Issue: 2
Pages: 1248 - 1256
DOI: 10.1007/s10163-017-0692-3
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Funding: This work was conducted under the auspices of the Geodesign Project, supported by the Finnish Funding Agency for Technology and Innovation (Tekes) and various companies (Boliden Harjavalta Oy, Destamatic Oy, Fortum Power and Heat Oy, Paroc Group Oy, Saint-Gobain Rakennustuotteet Oy, and Suomen Erityisjäte Oy).
Copyright information: © Springer Japan KK, part of Springer Nature 2017. This is a post-peer-review, pre-copyedit version of an article published in J Mater Cycles Waste Manag. The final authenticated version is available online at: