An investigation of iron sulphide dust minimum ignition temperatures

An investigation of the ignition behaviour of iron sulphide dusts has been undertaken. Commercial samples of FeS and FeS 2 and mine samples of pyrrhotite and pyrite were tested for minimum ignition temperature (MIT) using a device known as the BAM oven. The mine samples were found to undergo a decre...

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Bibliographic Details
Published in:Journal of hazardous materials 2003-02, Vol.97 (1), p.1-9
Main Authors: Amyotte, Paul R., Soundararajan, Ranganathan, Pegg, Michael J.
Format: Article
Language:English
Subjects:
Applied sciences
BAM oven
Chemical engineering
Chemistry
Dust
Dust explosion
Exact sciences and technology
Explosions
Ferrous Compounds - chemistry
Inorganic chemistry and origins of life
Iron sulphide dusts
Kinetics and mechanism of reactions
Minimum ignition temperature
Pyrite
Pyrrhotite
Risk Assessment
Safety
Temperature
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Summary:An investigation of the ignition behaviour of iron sulphide dusts has been undertaken. Commercial samples of FeS and FeS 2 and mine samples of pyrrhotite and pyrite were tested for minimum ignition temperature (MIT) using a device known as the BAM oven. The mine samples were found to undergo a decrease in MIT as the mass mean particle diameter became smaller. Using available theoretical treatments, this experimental observation was interpreted as providing further evidence of the importance of heterogeneous combustion in the ignition of iron sulphide dusts. A dense cloud state was proven for the experimental apparatus used, and an alternate criterion for the boundary between a dilute and a dense dust cloud was proposed in terms of the number of dust particles present in the cloud.
ISSN:0304-3894
1873-3336
DOI:10.1016/S0304-3894(02)00220-0