International Sugar Journal

Perforated mill roll shells* [Full subscriber]

Abstract Perforated sugar mill roll shells contain a system of radial drainage passages connecting the surface of the roller to a set of longitudinal internal manifolds with open ends. The intention is that these perforated roll shells provide additional drainage paths for the juice extracted by the crushing mill. The claimed advantages of perforated rolls over solid rolls included improved mill feeding, increased extraction and reduced bagasse moisture. The paper reports previously unpublished trials undertaken in the 1990s with the aim of establishing the performance of perforated roll shells relative to that of conventional, solid roll shells when installed in…

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