Reference number
ISO 806:2004
© ISO 2024
International Standard
ISO 806:2004
Aluminium oxide primarily used for the production of aluminium — Determination of loss of mass at 300 degrees C and 1 000 degrees C
Edition 2
2004-10
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Published (Edition 2, 2004)
This publication was last reviewed and confirmed in 2019. Therefore this version remains current.

ISO 806:2004

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CHF 63
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Abstract

ISO 806:2004 specifies a method for the determination of loss of mass on heating of aluminium oxide at 300 °C and further loss of mass on ignition at 1 000 °C. By industry convention, these mass losses are often referred to as "moisture (MOI)" and "loss on ignition (LOI)" respectively.

This method is suitable for calcined alumina in the range 0,2 % to 5 % loss of mass at 300 °C and 0,1 % to 2 % loss of mass at 1 000 °C.

This method provides for samples to be treated on an "as-received" basis for determination of actual MOI and LOI in alumina samples. To improve precision of analysis in cases where "as-received" results are not required, samples can be "air-equilibrated" prior to analysis. "Air-equilibration" can greatly affect MOI results and significantly alter LOI results. The "air-equilibration" procedure and its effects are discussed.

Instrumental methods are also discussed.

General information

  • Status
     : Published
    Publication date
     : 2004-10
    Stage
    : Close of review [90.60]
  • Edition
     : 2
    Number of pages
     : 8
  • Technical Committee :
    ISO/TC 226
    ICS :
    71.100.10 
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