AS 2806.7-1994

1 - AS 2806.7-1994 ALUMINIUM ORES-SAMPLING - DETERMINATION OF QUALITY VARIATION
4 - PREFACE
4 - CONTENTS
5 - FOREWORD
6 - 1 SCOPE
6 - 2 REFERENCED DOCUMENTS
6 - 3 GENERAL
6 - 3.1 Characteristics measured
6 - 3.2 Collection of data
6 - 4 CHARACTERIZATION OF QUALITY VARIATION
6 - 4.1 Increment variance method
7 - 4.2 Variogram method
8 - 5 NUMERICAL EXAMPLE
8 - 5.1 General
8 - 5.2 Calculation of increment variance
9 - 5.3 Calculation of the variogram

Specifies methods for evaluating the quality variation of aluminium ores to determine the minimum number of primary increments, and consequently for designing the sampling scheme. A numerical example, using alumina content as the quality characteristic, is included.

This Standard specifies methods for evaluating the quality variation of aluminium ores for determining the minimum number of primary increments and consequently for designing the sampling scheme.

First published as AS 2806.7-1994.