Abstract Preview
The method is based on decomposition of the test portion by fusion with sodium tetraborate and treatment with dilute nitric acid, addition of ammonium molybdate to convert silicate into a molybdatosilicate complex, reduction to molybdenum blue with ascorbic acid, and spectrophotometric measurement of the absorbance of the molybdenum blue complex at a wavelength of approximately 600 nm. Applies to silicon contents between 0,1 % and 5,0 % in natural iron ores, iron ore concentrates and agglomerates, including sinter products, especially for ores containing fluorine.
General information
-
Status : PublishedPublication date : 1992-12
-
Edition : 1Number of pages : 8
-
- ICS :
-
Iron ores
Buy this standard
| Format | Language | |
|---|---|---|
| Paper |
- CHF58
Life cycle
A standard is reviewed every 5 years
Revisions / Corrigenda
-
Previously
ISO 4686:1980
-
Now under review
ISO 2598-2:1992
Got a question?
Check out our FAQs
Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)
Keep up to date with ISO
Sign up to our newsletter for the latest news, views and product information.