Studies of the effect of tracer activity on time-averaged positron emission particle tracking measurements on tumbling mills at PEPT Cape Town |
| |
| Authors: | TS Volkwyn A Buffler I Govender J-P Franzidis AJ Morrison A Odo NP van der Meulen C Vermeulen |
| |
| Affiliation: | 1. School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia;2. Computational Engineering and Science Research Centre, The University of Southern Queensland, Toowoomba, QLD 4350, Australia;3. School of Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia;1. Rio Tinto Centre for Advanced Mineral Recovery, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom;2. Department of Physics, University of Cape Town, Rondebosch 7701, South Africa;3. Surfaces and Particles Engineering Laboratory, Department of Chemical Engineering, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom;4. Minerals to Metals Research Initiative, Department of Chemical Engineering, University of Cape Town, Rondebosch 7701, South Africa;5. School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom;1. Institute of Particle Science and Engineering, School of Process, Environmental and Materials Engineering, University of Leeds, Leeds LS2 9JT, UK;2. P&G Technical Centre Ltd., Newcastle Upon Tyne NE12 9BZ, UK;3. P&G, Beijing Innovation Centre, Beijing. PR China |
| |
| Abstract: | The statistical uncertainties associated with time-averaged positron emission particle tracking (PEPT) measurements of the position, velocity and acceleration of a small tracer particle have been investigated. Experiments were undertaken using the ECAT ‘EXACT3D’ PET scanner recently installed at the facilities of PEPT Cape Town at iThemba LABS, South Africa. Small “button” sources of 68Ga were attached to the outer shell of a small mill and PEPT data were recorded over several half-lives, for the cases of the mill being empty and entirely filled with steel balls. The effect of tracer activity on the statistical uncertainties in the positions, velocities and accelerations derived from the measurements was investigated, as a first step towards fully quantifying the uncertainties associated with tracking particles via PEPT in laboratory-scale tumbling mills. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
