BS 7020-4.2:1990
Current
The latest, up-to-date edition.
Analysis of iron ores. Method for the determination of total iron content Titanium (III) chloride reduction methods
Hardcopy , PDF
English
31-10-1990
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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.
| 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
|
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.
| BS 7020-2:1988 | Analysis of iron ores Method for the determination of hygroscopic moisture in analytical samples |
| BS 5660-1:1987 | Methods of sampling iron ores Manual method of increment sampling |
| ISO 648:2008 | Laboratory glassware — Single-volume pipettes |
| ISO 385-1:1984 | Laboratory glassware — Burettes — Part 1: General requirements |
| BS 5660-2:1987 | Methods of sampling iron ores Mechanical method of increment sampling and sample preparation |
| BS 7020-1:1988 | Analysis of iron ores Method for the preparation of pre-dried test samples for chemical analysis |
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