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BS 7020-5.1:1993

Current
Current

The latest, up-to-date edition.

Analysis of iron ores. Methods for the determination of silicon content Gravimetric methods
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

15-10-1993

Publisher

British Standards Institution

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 (normative) Flowsheet of the procedure for the
     acceptance of analytical values for test samples
B (informative) Derivation of repeatability and
     permissible tolerance equations
C (informative) Precision data obtained by
     international analytical trials
Tables
1 Mass of test portion
B.1 Silicon contents of test samples
Figure
C.1 Least-squares fit of precision against X for
     silicon

Two methods for the determination of silicon contents between 1% (m/m) and 15% (m/m) (with certain limitations) of iron ores.

This part of ISO 2598 specifies two gravimetric methods for the determination of the silicon content of iron ores.

These methods are applicable, with certain limitations, to silicon contents between 1 % (m/m) and 15 % (m/m) in natural iron ores, iron ore concentrates and agglomerates, including sinter products.

Method 1 is not applicable to iron ores having a content of reducing agents greater than 2 % (m/m), for instance pyrite, or to ores having a fluorine content greater than 0,1 % (m/m). It is recommended for lower grade ores having a high content of amphoteric elements.

Method 2 can be used for ores having a fluorine content greater than 0,1 % (m/m). It is recommended for high grade ores having a low content of gangue.

NOTE 1 For ores having a silicon content less than 5 % (m/m), the method specified in ISO 2598-2:–1), Iron ores – Determination of silicon content – Part 2: Reduced molybdosilicate spectrophotometric method, is preferable.

Committee
W/-
DevelopmentNote
Supersedes BS 4158-3(1972) & 91/35108 DC Also numbered as ISO 2598-1 (09/2005) Reviewed and confirmed by BSI, October 2014. (09/2014)
DocumentType
Standard
Pages
14
PublisherName
British Standards Institution
Status
Current
Supersedes

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
BS 5660-2:2001 Methods of sampling iron ores Sampling and sample preparation procedures
BS 7020-1:1988 Analysis of iron ores Method for the preparation of pre-dried test samples for chemical analysis

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Hardcopy - English
PDF - English
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