- Title
- Alumina scale formation and build-up mechanisms pneumatic conveying pipelines
- Creator
- Cenna, A. A.; Williams, K. C.; Jones, M. G.
- Relation
- CAN 2012 11th International Conference on Advances and Trends in Engineering Materials and Their Applications, AES-ATEMA 2012. CAN’2012 Eleventh AES-ATEMA International Conference Proceedings (Toronto, Canada 06-10 August, 2012) p. 297-304
- Publisher
- Advanced Engineering Solutions
- Resource Type
- conference paper
- Date
- 2012
- Description
- Pneumatic conveying is a process in which material is conveyed through a pipeline using high pressure air. It is usually used for in-plant transport over relatively short distances. This is primarily to exploit the degree of flexibility it offers in terms of pipeline routing as well as dust minimization. However, alumina conveying systems suffers from two major problems, wear and scale build-up on pipeline surfaces. Buildup of scale restricts the flow area causing blockage and increases wear due to higher velocity. The ability to determine the mechanisms of formation and buildup of scales can help to develop effective tools for reliable operation of pneumatic conveying systems. This paper presents an analysis of alumina scale microstructure for a better understanding of their formation and growth mechanisms. Scanning electron microscope (SEM) has been used for the surface analysis and EDS (Energy Dispersive x-ray Spectroscopy) has been used for the elemental analysis. SEM micrographs reveal that recrystallization of alumina and agglomeration of ultra-fine alumina particles is primarily responsible for the formation of these scales.
- Subject
- wear; build-up; pneumatic conveying; alumina
- Identifier
- http://hdl.handle.net/1959.13/1336592
- Identifier
- uon:27655
- Identifier
- ISBN:9780987994523
- Language
- eng
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