Active standard | Published: 10/12/1992

ISO 2598-2:1992

Iron ores — Determination of silicon content — Part 2: Reduced molybdosilicate spectrophotometric method
(Minerais de fer — Dosage du silicium — Partie 2: Méthode spectrophotométrique au molybdosilicate réduit)

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Detail information

Designation: ISO 2598-2:1992

Publication date: 10/12/1992

Pages: 8

Country: International technical standard

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Description / Abstract: 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.

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