Abstract
Vibrating screens are a widely applied form of particle separations. In spite of this significance, their understanding is still an obstacle. Three approaches were used to characterize the flow of granular material in a linear vibrating screen. The statistical model, mass action, and kinetic model based on conservation of momentum were derived. Experiments were then conducted on a multi-sized prototype screen and glass beads of sizes 0.75, 1, 2, 3 mm. Deck inclinations were varied over 7.5,12.5, and 17.5°, and frequencies over 7, 15, and 20 Hz. A total of 72 feed batches and a constant power of 50 W was used. The experimental data was then used to validate the models. The three models provided accurate flow prediction over the screens. Additionally, the kinetic model also provided a basis for optimal design of the screening unit operation, by allowing manipulation of seven design variables to obtain a 95–100% efficient vibrating screen. Â
Original language | English |
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Pages (from-to) | 3889-3898 |
Number of pages | 10 |
Journal | AIChE Journal |
Volume | 62 |
Issue number | 11 |
DOIs | |
Publication status | Published - 1 Nov 2016 |
MoE publication type | A1 Journal article-refereed |
Keywords
- mathematical modeling
- numerical solutions
- particle/count/measurements
- separation techniques
- solids processing