EPSRC Reference: |
GR/J75135/01 |
Title: |
POWDER AND PASTE MIXING USING POSITRON-BASED 3D IMAGING TECHNIQUES |
Principal Investigator: |
Beynon, Professor T |
Other Investigators: |
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Researcher Co-Investigators: |
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Project Partners: |
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Department: |
School of Physics and Astronomy |
Organisation: |
University of Birmingham |
Scheme: |
Standard Research (Pre-FEC) |
Starts: |
01 September 1994 |
Ends: |
31 August 1997 |
Value (£): |
157,951
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EPSRC Research Topic Classifications: |
Particle Technology |
Rheology |
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EPSRC Industrial Sector Classifications: |
Construction |
Food and Drink |
Pharmaceuticals and Biotechnology |
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Related Grants: |
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Panel History: |
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Summary on Grant Application Form |
A positron camera allows single particles down to 1 mm in size to be tracked accurately when moving at 2 m/s. The camera is used to unravel some of the many mysteries surrounding the poorly understood operation of powder mixing, which is central to areas as diverse as food, advanced materials and paste preparation. It is known that performance is very sensitive to the equipment and particle properties. A purpose of the programme is to demonstrate for the first time the conditions necessary for geometric and dynamic similarity as demanded by the underlying dimensionless groups. Another is the investigation of the influence of bed fill, rotational speed, blade spacing and geometry in the axial and radial displacements, and velocities. The behaviour of segregating particles, be it due to size or density, is another key feature. The tracer particles will be further used to follow paste mixing in a parallel set of studies conducted on the same equipment. Here it is anticipated that the behaviour of the process will be linked to the macroscopic rheological properties concerned with the behaviour of the paste in extension or in shear.
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Key Findings |
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Potential use in non-academic contexts |
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Impacts |
Description |
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Summary |
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Date Materialised |
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Sectors submitted by the Researcher |
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Project URL: |
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Further Information: |
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Organisation Website: |
http://www.bham.ac.uk |