BS ISO 806:2004
Current
The latest, up-to-date edition.
Aluminium oxide primarily used for the production of aluminium. Determination of loss of mass at 300 °C and 1000 °C
Hardcopy , PDF
English
30-11-2004
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Foreword
Introduction
1 Scope
2 Normative references
3 Principle
4 Desiccants
5 Apparatus
6 Sample handling and preparation
7 Procedure
8 Calculation
9 Precision
10 Test report
11 Instrumental analysis
Annex A (normative) The procedure and effect of
sample-handling for air-equilibrated samples
Provides a method for the determination of loss of mass on heating of aluminium oxide at 300 degrees C and further loss of mass on ignition at 1000 degrees C.
| Committee |
W/-
|
| DevelopmentNote |
Supersedes BS 4140-2(1986), BS 4140-3(1986) and 03/309338 DC. (12/2004)
|
| DocumentType |
Standard
|
| Pages |
16
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This International Standard 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 in Annex A.
Instrumental methods are also discussed.
| Standards | Relationship |
| ISO 806:2004 | Identical |
| AS 2850-1986 | Chemical analysis - Interlaboratory test programs - For determining precision of analytical method(s) - Guide to the planning and conduct |
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