Foreword

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This document was prepared by Technical Committee ISO/TC 27, Coal and coke, Subcommittee SC 1, Coal preparation: Terminology and performance.

This third edition cancels and replaces the second edition (ISO 10752:2019), which has been technically revised.

The main changes are as follows:

Clause 2 normative references updated;
data sheets converted to tables.

Any feedback or questions on this document should be directed to the user’s national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.

Introduction

A standard expression of performance is used to define the accuracy of separation of a particular item, to assist in the comparison of the performance of different items of coal sizing equipment and in the prediction of separation results.

1 Scope

This document describes the principles and methods for the expression of results of performance tests on sizing equipment used in coal preparation and includes methods for the evaluation of performance parameters. Performance test procedures and size measurement techniques are recommended.

This document applies to all types of sizing equipment, categorized as follows:

screens;
classifiers;
others.

The procedure described in this document applies to two-product separations. Performance assessment of multiproduct separations can be achieved by consideration of a series of two-product separations.

2 Normative references

3 Terms and definitions

3.1 General terms

3.2 Performance parameters terms

4 Performance criteria

5 Performance parameters

6 Performance test procedures

7 Analytical procedures

8 Evaluation and presentation of performance characteristics

8.1 General

8.2 Basic data

8.3 Reconstituted feed size distribution

8.4 Partition curve

8.5 Partition size

8.6 Sharpness of separation

8.7 Misplaced material curves

8.8 Misplaced material

8.9 Equal errors size

8.10 Theoretical yield

8.11 Material placement efficiency

8.12 Near-size material

8.13 Test and equipment data

9 Tabular and graphical presentation

Bibliography