Maximum in Mass Flow Rates of Hard Metal Granules through Circular Orifices in Relation to the Angle of Repose

Authors:

Marvin Just (1,2), Alexander Medina Peschiutta (1,2), Ralph Useldinger (1), Jörg Baller (2)

1- CERATIZIT Luxembourg S.à r.l., 101 Route de Holzem, L-8232, Grand Duchy of Luxembourg

2- Department of Physics and Materials Science, University of Luxembourg, 162A Avenue de la Faiencerie, L-1511 Luxembourg, Grand Duchy of Luxembourg

Abstract:

The mass flow of granular matter through orifices can be described by the well-known Beverloo law. It depends on particle and orifice sizes, interparticle and particle/container interaction forces, particles’ surfaces – to name a few influences on the mass flow rate. We present an experimental study of the flow of a set of ready-to-press (RTP) hard metal powders through orifices of varying diameter. The obtained parameters of the Beverloo law are compared with angle of repose measurements. The interplay between attractive interparticle forces and gravitational forces are discussed for both types of experimental measurements and related to the difference between particle and orifice size.

DOI:

https://doi.org/10.59499/EP235765170