ISO 1018:2023 石炭 | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 27, Coal and coke, Subcommittee SC 5, Methods of analysis.

This third edition cancels and replaces the second edition (ISO 1018:2019), of which it constitutes a minor revision. The changes are as follows:

• the scope and title were widened to coal as in the referenced ASTM D1412.

Introduction

The moisture-holding capacity indicates the rank of coals and is used in coal classification for correcting the calorific value of the sample to the moist mineral matter-free basis. The full moisture-holding capacity is that of the coal in equilibrium with an atmosphere saturated with water vapour. Since there are insuperable experimental difficulties in working with such an atmosphere, the determination is carried out at 96 % to 97 % relative humidity.

1 Scope

This document makes reference to ASTM D1412 as a method of determining the moisture-holding capacity of coal.

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.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

Bibliography