| Type of Document |
Master's Thesis |
| Author |
Kennedy, Dennis Lee
|
| Author's Email Address |
dknnd@vt.edu |
| URN |
etd-10272008-172159 |
| Title |
Redesign of Industrial Column Flotation Circuits Based on a Simple Residence Time Distribution Model |
| Degree |
Master of Science |
| Department |
Mining and Minerals Engineering |
| Advisory Committee |
| Advisor Name |
Title |
| Luttrell, Gerald H. |
Committee Chair |
| Adel, Gregory T. |
Committee Member |
| Yoon, Roe-Hoan |
Committee Member |
|
| Keywords |
- Residence Time Distribution
- Coal Flotation
- Column Flotation
|
| Date of Defense |
2008-10-14 |
| Availability |
unrestricted |
Abstract
The potential for improved selectivity has made column flotation cells a popular choice for upgrading fine coal. Unfortunately, recent production data from full-scale column plants indicate that many industrial installations have failed to meet original expectations in terms of clean coal recovery. Theoretical studies performed using a simple dispersion model showed that this inherent shortcoming could be largely minimized by reconfiguring the columns to operate in series as a cell-to-cell circuit. Follow-up field data showed that this low-cost modification increased flotation recovery as predicted by the dispersion model. This study presents the key findings obtained from the field investigation and provides generic guidelines for designing multi-stage column circuits.
|
| Files |
| Filename |
Size |
Approximate Download Time
(Hours:Minutes:Seconds)
|
| 28.8 Modem |
56K Modem |
ISDN (64 Kb) |
ISDN (128 Kb) |
Higher-speed Access |
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Thesis_Dennis_Kennedy.pdf |
795.93 Kb |
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