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ISO 2598-2:1992

Iron ores — Determination of silicon content — Part 2: Reduced molybdosilicate spectrophotometric method

Dec 10, 1992

General information

90.93     Mar 30, 2025

ISO

ISO/TC 102/SC 2

International Standard

73.060.10  

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Published

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 4686:1980

NOW

PUBLISHED
ISO 2598-2:1992
90.93 Standard confirmed
Mar 30, 2025

National adoptions

SRPS ISO 2598-2:1997  
ISS

Iron ores — Determination of silicon content — Part 2: Reduced molybdosilicate spectrophotometric method

90.93   Standard confirmed

C017-1 more