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immediate downloadReleased: 2009-04-30
BS EN ISO 21079-1:2008
Chemical analysis of refractories containing alumina, zirconia and silica. Refractories containing 5 percent to 45 percent of ZrO2 (alternative to the X-ray fluorescence method) Apparatus, reagents and dissolution
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Standard number: | BS EN ISO 21079-1:2008 |
Pages: | 20 |
Released: | 2009-04-30 |
ISBN: | 978 0 580 58570 8 |
Status: | Standard |
DESCRIPTION
BS EN ISO 21079-1:2008
This standard BS EN ISO 21079-1:2008 Chemical analysis of refractories containing alumina, zirconia and silica. Refractories containing 5 percent to 45 percent of ZrO2 (alternative to the X-ray fluorescence method) is classified in these ICS categories:
- 71.040.40 Chemical analysis
- 81.080 Refractories
This part of ISO 21079 specifies methods for the chemical analysis of AZS (alumina, zirconia, and silica) refractory products (containing 5 % to 45 % of ZrO2) and raw materials, using traditional (“wet”) methods, inductively coupled plasma atomic emission (ICP-AE) spectrometry and flame atomic absorption (FAA) spectrometry. It covers apparatus, reagents and dissolution methods.
The range of determination is given in Table 1.
Table 1
Range of determination (% by mass)
Component | Range | Component | Range |
---|---|---|---|
LOI | –1 to 40 | MgO | 0,01 to 2 |
SiO2 | 0,1 to 45 | Na2O | 0,01 to 3 |
Al2O3 | 1 to 80 | K2O | 0,01 to 1 |
Fe2O3 | 0,01 to 2 | Cr2O3 | 0,01 to 3 |
TiO2 | 0,01 to 5 | ZrO2 | 5 to 45 |
CaO | 0,01 to 2 | HfO2 | 0,01 to 2 |
NOTE The values other than LOI are on an ignited basis.
This part of ISO 21079 is not applicable to MgO-based refractories.
NOTE This part of ISO 21079 gives alternatives to the X-ray fluorescence (XRF) method given in ISO 12677.