Iron ores - Determination of silicon content - Part 2: Reduced molybdosilicate spectrophotometric method
Also Known As:
SKU153563547
Published by
International Organization for Standardization
ISO
Publication Date1992-12
Pages CountPages11
Finding the silicon content in iron ores is done using the ISO 2598-2:1992 standard. The process involves treating a sample of iron ore with diluted nitric acid after it has been fused with sodium tetraborate to break it down. To make the silicate contained in the sample into a molybdatosilicate complex, ammonium molybdate is added. Ascorbic acid is then used to reduce this complex, creating molybdenum blue. At a wavelength of about 600 nm, the molybdenum blue complex's absorbance is determined spectrophotometrically.
With silicon levels ranging from 0.1% to 5.0%, this standard is applicable to iron ores, iron ore concentrates, and agglomerates like sinter products. It is especially helpful for fluorine-containing minerals.
Details
| Edition | 1 |
| ICS Codes | 73.060.10 - Iron ores |
| Language(s) | English |
| File Size | 593.9 KB |
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