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AS 4538.1:1999 (R2013)

AS 4538.1:1999 (R2013)

$33.80

Guide to the sampling of alumina – Sampling procedures

Published By Publication Date Number of Pages
AS 1999-03-05 29
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Sets out a procedure for the sampling of alumina from moving streams, including stopped-belt sampling, to provide samples for chemical analysis, physical testing and determination of moisture content. The procedure is not applicable to the sampling of alumina from fluidized streams, which presents particular sampling problems.

Scope

This Guide sets out a procedure for the sampling of alumina from moving streams, including stopped-belt sampling, to provide samples for chemical analysis, physical testing and determination of moisture content.
The bulk of this procedure comprises generic sampling concepts that were extracted, in part, from AS 4433.1, and which are common to a diverse range of sampling regimes. Emphasis on alumina sampling is incorporated where appropriate, and a case study of the falling-stream type mechanical autosampler in use at Alcoa of Australia's Kwinana ship-loading facility is cited, to highlight specific requirements for alumina sampling. Procedures for automated cross-belt sampling, sampling from stationary situations and manual sampling from moving streams are not discussed in this document, having been fully detailed in AS 4433.1.
Alumina's uniform particle size relative to other non-powder ores contributes to its homogeneous chemical properties, allowing simplified sampling theory to be employed. For a comprehensive description of sampling theory, and variographic techniques, refer to AS 4433.1. Physical segregation during handling and transportation may result in biased size distributions of incorrectly taken samples; the prevention or minimization of such segregation is the main focus of this procedure. This Standard is not applicable to the sampling of alumina from fluidized streams, which presents particular sampling problems.

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AS 4538.1:1999 (R2013)
$33.80