Inerting of fine metallic powders

Minimum explosible concentration (MEC) tests were carried out on mixtures of 50:50 AIMg dust, AI dust, and 70:30 MgCa dust. MgO dust was added to these mixtures as an inertant. The results indicate that between 70 and 75% fine MgO dust is required to completely inert the 50:50 AIMg dust, which is in...

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Bibliographic Details
Published in:Journal of loss prevention in the process industries 1996, Vol.9 (1), p.77-80
Main Authors: Mintz, K.J., Bray, M.J., Zuliani, D.J., Amyotte, P.R., Pegg, M.J.
Format: Article
Language:English
Subjects:
fine metallic powders
inerting
minimum explosible concentration
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Summary:Minimum explosible concentration (MEC) tests were carried out on mixtures of 50:50 AIMg dust, AI dust, and 70:30 MgCa dust. MgO dust was added to these mixtures as an inertant. The results indicate that between 70 and 75% fine MgO dust is required to completely inert the 50:50 AIMg dust, which is in the same range as the levels of rock dust needed for coal dust inerting. Use of a coarser MgO dust raises the quantity of MgO required to inert. Minimum oxygen concentration tests on the 50:50 AIMg dust with added MgO correlated with the MEC results. Preparation of inert/metal dust mixtures is a novel method of decreasing the explosion hazard in manufacturing, transportation and for the end-user.
ISSN:0950-4230
DOI:10.1016/0950-4230(95)00043-7