ISO 15633:2017 鉄鉱石—ニッケルの測定—フレーム原子吸光分光法 | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 102, Iron ore and direct reduced iron, Subcommittee SC 02, Chemical analysis.

This third edition cancels and replaces the second edition (ISO 15633:2015), of which it constitutes a minor revision with the following changes:

• Clause 1 “0,1 %” has been replaced by “0,10 %”;
• 7.1 “<160 μm” has been replaced by “−160 μm”;
• 8.2 a new sentence has been included to make reference to ISO 2596;
• the titles of 9.1, Table B.1 and Figure C.1 “sulfur” has been replaced by “nickel”;
• 9.2.4 Formula (8) and the relevant descriptions have been modified to harmonize this subclause across all documents for which ISO/TC 102/SC 2 is responsible.

Introduction

The objective of a proposed revision of ISO 9685:1991 was to extend the lower limit for a flame atomic absorption spectrometric method determination of both chromium and nickel in iron ores down to 0,001 %. However, due to bias, the method for nickel could not be approved for referee purposes.

The 22nd meeting of ISO/TC 102/SC 2 decided to progress this document as a non-referee method.

1 Scope

This document specifies a flame atomic absorption spectrometric method for the determination of the nickel mass fraction of iron ores.

This method is applicable to mass fractions of nickel between 0,001 % and 0,10 % in natural iron ores, iron ore concentrates and agglomerates including sinter products.

This method is not appropriate for referee purposes.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

No terms and definitions are listed in this document.

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Bibliography