Process robustness criteria for industrial vibratory screens
Övrigt konferensbidrag, 2023
In this paper, we utilize non-convex polyhedral discrete element simulations with a GPU solver to investigate the robustness of vibratory screening. A robustness KPI is introduced which reflects how well the vibratory screen is meeting the process requirements in terms of screening efficiency along the screen deck.
Simulations and typical process data demonstrate the implications of for instance surge flow mass rates or pegging on the critical classification position along the screen deck. If the critical position falls outside the deck endpoint, the operation will enter a new regime with a step change in reduced classification performance. The critical position is used to formulate a robustness criterion to ensure the optimal trade-off between throughput and classification efficiency given an expected process flow variance.
The criteria can be used for the design of screening equipment and for the selection of appropriate screen models and sizes for specific operational demands. It can also provide guidance when de-pegging of the screen decks is required in order to maintain screening efficiency.
Vibratory screens
Screening
Particle simulation
Discrete Element Modelling (DEM)
Författare
Johannes Quist
Stiftelsen Fraunhofer-Chalmers Centrum för Industrimatematik
Magnus Evertsson
Chalmers, Industri- och materialvetenskap, Produktutveckling
Adam Bilock
IPS Particle Technology Sweden AB
Klas Jareteg
IPS Particle Technology Sweden AB
Cape Town, South Africa,
Ämneskategorier
Mineral- och gruvteknik
Drivkrafter
Hållbar utveckling
Styrkeområden
Produktion