Performance analysis of solid-state shear milling of plastic particles
Innes, James R. Siddique, Nehnah Whiteside, Benjamin R. Caton-Rose, Philip D. Kelly, Adrian L. Lu, C. Yang, S. Wang, Q.
Innes, James R.
Siddique, Nehnah
Whiteside, Benjamin R.
Caton-Rose, Philip D.
Kelly, Adrian L.
Lu, C.
Yang, S.
Wang, Q.
Publication Date
2025
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(c) 2025 The Authors. This is an Open Access article distributed under the Creative Commons CC-BY license (http://creativecommons.org/licenses/by/4.0/)
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openAccess
Accepted for publication
2025-03-23
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Abstract
The paper presents an analysis of plastic particles flow and breakage in a solid-state shear mill (S3M). This mill resembles the traditional stone mill used for flour milling. Particle flow and their breakage are modeled as being the result of the work done on the surface of the particles as they are compressed, sheared, and cut between the rotating disc and the stationary normally loaded disc. The resulting equations give the fractions milled, xw,d, and size reduction Sr in terms of the applied load f, the number of passes, np, through the mill, and the disc rotational speed, N. The model equations were fitted against a wide range of S3M data of plastic particles, plastic particles with grinding additives, and mixed waste plastic particles. A single parameter function (fnp/N)Φ was found to control size reduction, with the exponent Φ distinguishing the effects of the feed nature and composition.
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Citation
Benkreira H, Innes JR, Siddique N et al (2025) Performance analysis of solid-state shear milling of plastic particles. Polymer Engineering and Science. Accepted for publication.
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Article