BS 7020-22:1990
Current
The latest, up-to-date edition.
Analysis of iron ores Method for the determination of acid-soluble iron (II) content. Titrimetric method
Hardcopy , PDF
English
28-02-1990
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National foreword
Committees responsible
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 of the procedure for the acceptance of
analytical values for test samples
B. Derivation of repeatability and permissible
tolerance equations
C. Precision data obtained by international analytical
trial
Table
B.1 Acid-soluble iron (II) contents of the test samples
Figure
C.1 Least-squares fit of precision against X for acid-
soluble iron (II)
Method for natural and processed iron ores containing from 1% to 25% acid-soluble iron (II) and only traces of metallic iron.
| Committee |
W/-
|
| DevelopmentNote |
Reviewed and confirmed by BSI, January 2005. (12/2004) Supersedes 88/36367 DC Also numbered as ISO 9035 (09/2005)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This International Standard specifies a method for the determination of iron(II) content in natural and processed iron ores containing from 1 % to 25 % acid-soluble iron(II) and only traces of metallic iron. This method is specifically limited for use in conjunction with the reducibility test methods specified in ISO 4695 or ISO 7215.
This method is not applicable to ores containing more than 0,3 % (m/m) sulfur (as sulfide) and/or 5 % (m/m) free carbon. Experiments have shown that the acid-insoluble residue can be neglected, especially as regards the needs of the reducibility test methods concerned and the precision obtainable.
| BS 6711-1:1986 | Vocabulary relating to laboratory apparatus made essentially from glass, porcelain or vitreous silica Names for items of apparatus |
| BS 6598:1985 | Method for determination of reducibility of iron ores |
| ISO 385-1:1984 | Laboratory glassware — Burettes — Part 1: General requirements |
| BS 846:1985 | Specification for burettes |
| ISO 7215:2015 | Iron ores for blast furnace feedstocks Determination of the reducibility by the final degree of reduction index |
| BS 7020-1:1988 | Analysis of iron ores Method for the preparation of pre-dried test samples for chemical analysis |
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