ASTM E246-21 PDF

Scope: 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific hazards statements are given in Section 5 and in special “Warning” paragraphs throughout these test methods. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM E246-21 Referenced Document

ASTM D1193 Standard Specification for Reagent Water
ASTM E1028 Standard Test Method for Total Iron in Iron Ores and Related Materials by Dichromate Titrimetry (Withdrawn 2003)
ASTM E276 Standard Test Method for Particle Size or Screen Analysis at No. 4 (4.75-mm) Sieve and Finer for Metal-Bearing Ores and Related Materials
ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ASTM E50 Standard Practice for Apparatus, Reagents, and safety Precautions for Chemical Analysis of Metals
ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM E877 Standard Practice for Sampling and Sample Preparation of Iron Ores and Related Materials
ASTM E882 Standard Guide for Accountability and Quality Control in the Chemical Analysis Laboratory

2021 ASTM E246-21 Standard Test Methods for Determination of Iron in Iron Ores and Related Materials by Dichromate Titrimetry
2010 ASTM E246-10(2015) Standard Test Methods for Determination of Iron in Iron Ores and Related Materials by Dichromate Titrimetry
2010 ASTM E246-10 Standard Test Methods for Determination of Iron in Iron Ores and Related Materials by Dichromate Titrimetry
2001 ASTM E246-01(2005) Standard Test Methods for Determination of Iron in Iron Ores and Related Materials by Dichromate Titration
2001 ASTM E246-01 Standard Test Methods for Determination of Iron in Iron Ores and Related Materials by Dichromate Titration
1995 ASTM E246-95 Standard Test Methods for Determination of Iron in Iron Ores and Related Materials by Dichromate Titration