Bank profiling and separation efficiency |
| |
| Affiliation: | 1. McGill University, 3610 University Street, Montreal H3A 0C5, Canada;1. School of Computer Science and Software Engineering, Tianjin Polytechnic University, Tianjin 300387, China;2. Department of Electrical and Computer Engineering, 2nd floor, ECERF (9107 116 Street), University of Alberta, Edmonton, AB T6G 2V4, Canada;1. School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane, 4000, QLD, Australia;2. Centre for Materials Science, Faculty of Science, Queensland University of Technology, Brisbane, 4000, QLD, Australia;3. School of Chemistry and Physics, Faculty of Science, Queensland University of Technology, Brisbane, 4000, QLD, Australia |
| |
| Abstract: | Various authors have discussed methods of optimising a bank of flotation cells. In this paper, JKSimFloat is used to investigate the effect of recovery profiling and mass pull profiling (i.e., mass distribution to cells in a bank) on the separation efficiency between floatable minerals and against entrained gangue.In the case of two floatable minerals, a balanced recovery profile was found to be optimal: supporting and extending previous analysis. In the case of separation of a floatable mineral from entrained gangue, the entrainment model that links water overflow rate to solids overflow rate was employed. When the value of b in the entrainment model is greater than one, a balanced mass pull profile was found to be optimum. The evidence for b > 1 is briefly reviewed; no example has been found where b < 1. Most of the profiles were controlled in the software by altering the bubble surface area flux distribution; a sensitivity analysis was performed using other variables.Recovery profiling was tested as part of a bank optimisation campaign at a talc operation in Timmins, Canada. Using air and frother as manipulated variables, it was found that as the rougher bank was moved toward a balanced profile the final plant product showed improvement in grade and yield. |
| |
| Keywords: | Froth flotation Flotation machines Flotation kinetics |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
