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BS 7020-4.2:1990

Current
Current

The latest, up-to-date edition.

Analysis of iron ores. Method for the determination of total iron content Titanium (III) chloride reduction methods
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-10-1990

Committees responsible
National foreword
Method
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Sampling and samples
7 Procedure
8 Expression of results
9 Test report
Annexes
A Flowsheet for the procedure for the acceptance of
     analytical values for test samples
B Derivation of precision statements
Tables
1 Precision
B.1 Total iron contents of test samples

Two methods specified using potassium dichromate as titrant after reduction of the iron (III) by tin (II) chloride and titanium (III) chloride. Excess reductant oxidized by either dilute potassium dichromate or perchloric acid.

This International Standard specifies two titrimetric methods, free from mercury pollution, for the determination of total iron content in iron ores, using potassium dichromate as titrant after reduction of the iron(III) by tin(II) chloride and titanium(III) chloride. The excess reductant is then oxidized by either dilute potassium dichromate (method 1) or perchloric acid (method 2).

Both methods are applicable to a concentration range of 30 % (m/m) to 72 % (m/m) of iron in natural iron ores, iron ore concentrates and agglomerates, including sinter products.

Committee
W/-
DevelopmentNote
Reviewed and confirmed by BSI, January 2005. (12/2004) Supersedes 87/44676 DC Also numbered as ISO 9507 (09/2005)
DocumentType
Standard
Pages
16
PublisherName
British Standards Institution
Status
Current

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