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Improving feeding powder distribution to the compaction zone in the roller compaction
Mingzhe Yu1, Chalak Omar1, Alexander Schmidt2
1Department of Chemical and Biological Engineering, University of Sheffield, Newcastle Street, Sheffield S1 3JD, United Kingdom.
Summary
Novel feeding guiders improved powder flow in roller compaction, leading to more uniform ribbon properties. This innovation enhanced tensile strength and reduced fines during the crushing stage.
Area of Science:
- Pharmaceutical Engineering
- Materials Science
- Powder Technology
Background:
- Powder flow significantly impacts ribbon property uniformity in roller compaction.
- Optimizing powder distribution in the feeding zone is crucial for consistent compaction.
Purpose of the Study:
- To enhance powder flow in the feeding zone of a roller compactor.
- To develop and evaluate novel feeding guiders for improved powder distribution.
Main Methods:
- Designing three novel feeding guiders using 3D printing technology.
- Integrating and testing the guiders in a roller compactor's feeding zone.
- Analyzing ribbon properties, including temperature profile and porosity distribution across the width.
Main Results:
- The novel feeding guiders directed more powder to the sides and less to the center.
- Uniform temperature profiles and porosity distributions were achieved across the ribbon width.
- Improved tensile strength of compacted ribbons and reduced fines post-crushing were observed.
Conclusions:
- Novel 3D-printed feeding guiders effectively improve powder flow and uniformity in roller compaction.
- The developed guiders enhance ribbon quality, leading to better mechanical properties and reduced waste.
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