Dusting Properties of Industrial Aluminas

Abstract

During later years much work has been done to reduce and to bring under control the external as well as the internal environmental problems in the aluminum reduction industry. To some extent attention also has been focused on dust problems and dusting of industrial aluminas. In the present study a correlation between the characteristics of four different industrial aluminas and their dusting properties has been sought. The study is based on laboratory examinations as well as on practical experience from a reduction plant. The purpose has been to find the determining parameters as regards dust generation, and to see how these are consistent with other quality criterias for alumina. In this way it may be possible both to specify the characteristics of an alumina with optimal properties under given conditions, and to see what will be the necessary adjustments on equipment and operating practises to minimise the dust problems.