ISO 2597-2:2019

Iron ores — Determination of total iron content — Part 2: Titrimetric methods after titanium(III) chloride reduction

This document specifies two titrimetric methods, free from mercury pollution, for the determination of total iron content in iron ores, using potassium dichromate as titrant after reduction of the iron(III) by tin(II) chloride and titanium(III) chloride. The excess reductant is then oxidized by either dilute potassium dichromate (Method 1) or perchloric acid (Method 2). Both methods are applicable to a concentration range of 30 % mass fraction to 72 % mass fraction of iron in natural iron ores, iron ore concentrates and agglomerates, including sinter products.

Minerais de fer — Dosage du fer total — Partie 2: Méthodes titrimétriques après réduction au chlorure de titane(III)

General Information

• Status: Published
• Publication Date: 02-Apr-2019
• ICS: 73.060.10 - Iron ores
• Technical Committee: ISO/TC 102/SC 2 - Chemical analysis
• Drafting Committee: ISO/TC 102/SC 2 - Chemical analysis
• Current Stage: 9020 - International Standard under periodical review
• Start Date: 15-Apr-2024
• Completion Date: 15-Apr-2024

Relations

• Revises: ISO 2597-2:2015 - Iron ores — Determination of total iron content — Part 2: Titrimetric methods after titanium(III) chloride reduction
• Effective Date: 05-Aug-2017

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 2597-2
Third edition
2019-04
Iron ores — Determination of total
iron content —
Part 2:
Titrimetric methods after
titanium(III) chloride reduction
Minerais de fer — Dosage du fer total —
Partie 2: Méthodes titrimétriques après réduction au chlorure de
titane(III)
Reference number
ISO 2597-2:2019(E)
©
ISO 2019

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ISO 2597-2:2019(E)

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ii © ISO 2019 – All rights reserved

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ISO 2597-2:2019(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
4.1 Decomposition of the test portion . 2
4.1.1 Acid decomposition . 2
4.1.2 Fusion-filtration . . 2
4.2 Titration of iron . 2
5 Reagents . 2
6 Apparatus . 4
7 Sampling and samples . 4
7.1 Laboratory sample . 4
7.2 Preparation of test samples . 5
7.2.1 General. 5
7.2.2 Ores having significant contents of combined water or oxidizable compounds . 5
7.2.3 Ores outside the scope of 7.2.2 . 5
8 Procedure. 5
8.1 Number of determinations .
...