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BS 7020-4.1(1988) : 1988

BS 7020-4.1(1988) : 1988

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

ANALYSIS OF IRON ORES - METHODS FOR THE DETERMINATION OF TOTAL IRON CONTENT - TITRIMETRIC METHODS

Available format(s)

Hardcopy , PDF

Superseded date

15-06-1995

Language(s)

English

Published date

01-01-1988

Publisher

British Standards Institution

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 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
D Decontamination of the waste solutions from the
   analysis
Table
   Total iron contents of the test samples
Figures
1 Least-squares fit of precision against X for total
   iron for the tin (II) chloride reduction method
2 Least-squares fit of precision against X for total
   iron for the hydrogen sulfide reduction method
3 Apparatus for the removal of mercury from waste
   solutions

Gives two titrimetric methods for determining total iron content in iron ores using potassium dichromate after reduction of the trivalent iron by tin, chloride or hydrogen sulfide. Applicable to a concentration range of 30 to 72% of iron in natural iron ores, and iron ore concentrates and agglomerates including sinter products. For an unknown ore, it is recommended that the iron content be determined by both methods to check that the tin chloride reduction method is satisfactory. Covers references, principle, reagents, apparatus, sampling and samples, procedure, expression of results and test report. Includes four annexes.

Committee
ISM/58
DevelopmentNote
REPLACES BS 4158: PART 1:1967.
DocumentType
Standard
Pages
16
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
ISO 2597:1985 Identical

BS 7312:1990 Methods of test for magnetite for use in coal preparation

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 5660-2:1987 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

View more information
Hardcopy - English
PDF - English

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