RECENT DEVELOPMENTS IN STANDARD PROCEDURES FOR THE ANALYSIS AND TESTING OF SMELTER GRADE ALUMINA

Foster, G., Power, G. and Yaxley, G.

Standards Australia committee MN/9 - (Alumina and Materials Used in the Production of Aluminium) was formed in 1983 in response to requests from the alumina and aluminium industries in Australia for standardised analytical procedures and test methods for measurement of physical and chemical properties of alumina. From 1983 to 1995 the committee has published seven alumina standard methods covering the topics of loss of mass on ignition, percent minus 20 micron content, alpha alumina content, specific surface area, angle of flow, particle size distribution by electroformed sieves and trace elements by x-ray fluorescence. This paper reviews some of the principles involved in the development of these analytical procedures and test methods. The current work program is also discussed. These methods and the ongoing development and review program provided by MN/9 are meeting the industries' need for up-to-date, relevant standard methods.