BS 7020-3:1988
Current
The latest, up-to-date edition.
Analysis of iron ores Method for the determination of combined water content
Hardcopy , PDF
English
31-01-1989
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National foreword
Committees responsible
Method
1 Scope and field of application
2 References
3 Principle
4 Reagents
5 Apparatus
6 Sampling and samples
7 Procedure
8 Expression of results
9 Test report
Annexes
A Flowsheet on the procedure for the acceptance of
analytical values for test samples
B Derivation of repeatability and permissible tolerance
equations
C Graphical presentation of precision data obtained by
international analytical trial
Tables
1 Mass of test portion
2 Combined water contents of test samples
Figures
1 Apparatus for the Karl Fischer measurement (two-
furnaces-in-series type) (Example)
2 Apparatus for the Karl Fischer measurement
(interchangeable furnace type) (Example)
3 Karl Fischer absorption cell (Example)
4 Least-squares fit of precision against X for combined
water
Applicable to combined water contents in the range 0.05 to 10% (m/m) in natural iron ores, and iron ore concentrates and agglomerates including sinter products.
| Committee |
W/-
|
| DevelopmentNote |
Supersedes 86/38438 DC Also numbered as ISO 7335 (09/2005) Reviewed and confirmed by BSI, October 2014. (09/2014)
|
| DocumentType |
Standard
|
| Pages |
16
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This International Standard specifies a titrimetric method for the determination of the combined water content of iron ores, using Karl Fischer solution.
This method is applicable to a concentration range of 0,05 to 10 % (m/m) of combined water in natural iron ores, and iron ore concentrates and agglomerates including sinter products.
NOTE The term “combined water means that part of the water content of an iron ore that can be removed only at temperatures substantially higher than 100 to 110 °C.
| BS 5660-1:1987 | Methods of sampling iron ores Manual method of increment sampling |
| BS 846:1985 | Specification for burettes |
| ISO 5725:1986 | Precision of test methods Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests |
| 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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