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  • BS 7020-4.3:1990

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

    Analysis of iron ores. Method for the determination of total iron content Silver reduction titrimetric method

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  15-08-2001

    Language(s):  English

    Published date:  31-10-1990

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    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 of the procedure for the acceptance of
         analytical values for test samples
    B Derivation of precision statements
    Tables
    B.1 Total iron contents of test samples (fusion
         decomposition)
    B.2 Total iron contents of test samples (acid
         decomposition)

    Abstract - (Show below) - (Hide below)

    Gives a method, free from mercury pollution, for determining total iron content in iron ores by silver reduction and potassium dichromate titration. Applicable to a concentration range of 30% to 72% of iron in natural iron ores, iron ore concentrates and agglomerates, including sinter products, containing not more than 0.1% Cu. Contents of vanadium normally present in iron ores are without effect. Covers normative references, principle, reagents, apparatus, sampling and samples, procedure, expression of results and test report.

    General Product Information - (Show below) - (Hide below)

    Committee W/-
    Document Type Standard
    Publisher British Standards Institution
    Status Withdrawn

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 3082:2017 Iron ores — Sampling and sample preparation procedures
    ISO 1042:1998 Laboratory glassware One-mark volumetric flasks
    ISO 648:2008 Laboratory glassware — Single-volume pipettes
    ISO 7764:2006 Iron ores Preparation of predried test samples for chemical analysis
    ISO 3083:1986 Iron ores — Preparation of samples — Manual method
    ISO 2596:2006 Iron ores — Determination of hygroscopic moisture in analytical samples — Gravimetric, Karl Fischer and mass-loss methods
    ISO 385-1:1984 Laboratory glassware — Burettes — Part 1: General requirements
    ISO 3081:1986 Iron ores — Increment sampling — Manual method
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