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Long-term dust generation from silicon carbide powders

Long-term dust generation from silicon carbide powders

Chakravarty, Somik, Fischer, Marc, García-Triñanes, Pablo, Dalle, Morgane, Meunier, Laurent, Aguerre-Chariol, Olivier, Le Bihan, Olivier and Morgeneyer, Martin (2018) Long-term dust generation from silicon carbide powders. Process Safety and Environmental Protection, 116. pp. 115-125. ISSN 0957-5820 (doi:10.1016/j.psep.2018.01.021)

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Abstract

Most dustiness studies do not measure dust release over long durations, nor do they characterize the effect of dust release on bulk powders. In this study, we tested the dustiness of two different samples of silicon carbide (SiC) powders (referred to as F220 and F320) over six hours using a vortex shaker. Additionally, we characterized the bulk sample for change in shape and size distribution due to the testing. Both powders release respirable fractions of dust particles but differ in their dust generation behavior. The numbers of released respirable particles for powder F220 are more than two times higher than those of powder F320.

The dust generation mechanism might include the release of aerosols due to the attrition of particles owing to inter-particle and particle-wall impaction. This study emphasizes the need for long duration dustiness tests for hard materials like SiC and characterization for change in bulk material properties due to dust generation and release. Furthermore, the results can aid in selecting the bulk material for long-term applications based on dustiness.

Item Type: Article
Uncontrolled Keywords: Dustiness; Silicon carbide particles; Vortex shaker; Attrition; Dust generation mechanism
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Department of Applied Engineering & Management
Last Modified: 03 May 2018 10:42
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/19138

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