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Significance and Use
3.1 The determination of the total iron content is the primary means for establishing the commercial value of iron ores used in international trade.
3.2 These test methods are intended as referee methods for the determination of iron in iron ores. It is assumed that all who use these test methods will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly equipped laboratory and that proper waste disposal procedures will be followed. Appropriate quality control practices must be followed, such as those described in Guide .
1.1 These test methods cover the determination of total iron in iron ores, concentrates, and agglomerates in the concentration range 30 % to 95 % iron.
1.2 The test methods in this standard are contained in the sections indicated as follows:
Test Method A— Iron by the Hydrogen Sulfide Reduction Dichromate Titration Method (30 % to 75 % Fe)
Test Method B—Iron by the Stannous Chloride Reduction Dichromate Titration Method (35 % to 95 % Fe)
Test Method C—Iron by the Silver Reduction Dichromate Titration Method (35 % to 95 % Fe)
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazards statements are given in Section and in special “Warning” paragraphs throughout these test methods.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E882 Guide for Accountability and Quality Control in the Chemical Analysis Laboratory
E1028 Test Method for Total Iron in Iron Ores and Related Materials by Dichromate Titrimetry
ICS Number Code 73.060.10 (Iron ores)
UNSPSC Code 11101601(Iron ore); 41115602(Titration equipment)
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ASTM E246-10(2015), Standard Test Methods for Determination of Iron in Iron Ores and Related Materials by Dichromate Titrimetry, ASTM International, West Conshohocken, PA, 2015, www.astm.orgBack to Top