ISO 21283:2018 鉄鉱石—比表面積の決定—空気透過性装置を使用した試験方法（ブレイン） | 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 3, Physical testing.

Introduction

The international trade in pellet feeds as a merchant commodity is increasing rapidly and their specific surface is one of the most important specifications required in commercial contracts. This has led to the need for the development of an international test method to measure the specific surface area of pellet feeds.

This document concerns one of a number of test methods that have been developed to measure various characteristics of iron ores. This method was developed to provide a uniform procedure, validated by collaborative testing, to facilitate comparisons of tests made in different laboratories.

This document can be used to provide test results as part of a production quality control system, as a basis of a contract, or as part of a research project.

1 Scope

This document specifies a method to determine the fineness of iron ores in terms of specific surface area, using the manual Blaine air-permeability apparatus.

This document is applicable to pellet feeds in the range of 400 cm²/g to 2 500 cm²/g of specific surface area.

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

For the purposes of this document, the terms and definitions given in ISO 11323 and the following apply.

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