AS 4156.7-1999 (R2013)

Table of Contents

1 -  AS 4156.7:1999 COAL PREPARATION - COAL SIZE CLASSIFYING EQUIPMENT - PERFORMANCE EVALUATION
4 -  PREFACE
5 -  CONTENTS
6 -  1 SCOPE
6 -  2 REFERENCED DOCUMENTS
6 -  3 DEFINITIONS
6 -  3.1 General
6 -  3.1.1 Actual feed (F)
6 -  3.1.2 Reference size
6 -  3.1.3 Product
7 -  3.2 Performance parameters
7 -  3.2.1 Theoretical yield (sizing)
7 -  3.2.2 Material placement efficiency, coarser
7 -  3.2.3 Material placement efficiency, finer
7 -  3.2.4 Overall separation index
7 -  3.2.5 Sharpness of separation
7 -  4 PERFORMANCE CRITERIA
7 -  5 PERFORMANCE PARAMETERS
8 -  6 PERFORMANCE TEST PROCEDURES
9 -  7 ANALYTICAL PROCEDURES
9 -  8 EVALUATION AND PRESENTATION OF PERFORMANCE CHARACTERISTICS
9 -  8.1 General
10 -  8.2 Basic data
10 -  8.3 Reconstituted feed size distribution
10 -  8.4 Partition curve
10 -  8.5 Partition size
10 -  8.6 Sharpness of separation
10 -  8.7 Misplaced material curves
11 -  8.8 Misplaced material
11 -  8.9 Equal errors size
11 -  8.10 Theoretical yield
11 -  8.11 Material placement efficiency
12 -  8.12 Near-size material
12 -  8.13 Test and equipment data
12 -  9 TABULAR AND GRAPHIC PRESENTATION
19 -  APPENDIX A - CALCULATION OF THE YIELD OF EACH PRODUCT OF A SIZE SEPARATION FROM SIZE ANALYSES OF FEED AND PRODUCT MATERIALS
19 -  A1 INTRODUCTION
19 -  A2 RECOMMENDED METHODS FOR THE CALCULATION OF YIELD VALUES FROM THE SIZE ANALYSES
19 -  A2.1 Symbols
19 -  A2.2 Calculation of yield from fractional size analyses
20 -  A.2.3 Calculation of yield value from cumulative size analyses
21 -  APPENDIX B - WORKED EXAMPLE-VIBRATING SCREEN
28 -  APPENDIX C - WORKED EXAMPLE-CYCLONE
35 -  APPENDIX D - WORKED EXAMPLE-DEDUSTER
42 -  APPENDIX E - WORKED EXAMPLE-SIEVE BEND

Abstract

Provides principles and methods for the expression of results of performance tests on sizing equipment used in coal preparation. This Standard is based on but not equivalent to ISO 10752:1994 and includes an additional worked example in Appendix E.

RECONFIRMATION NOTICE
Technical Committee MN-001 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change.
Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.
Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 15 July 2013.
The following are represented on Technical Committee MN-001:

Australasian Institute of Mining and Metallurgy
Australian Coal Association
Australian Coal Industry Reference Samples
Australian Coal Preparation Society
Bureau of Steel Manufacturers of Australia
Coalfield Geology Council of NSW
CSIRO Energy Technology
National Association of Testing Authorities Australia
National Generators Forum
The University of New South Wales
The University of Queensland
University of Newcastle


To view or download a copy of the reconfirmation notice please go to the reconfirmation link near the top of this page.

Scope

This Standard sets out 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 Standard applies to all types of sizing equipment, categorized as follows:
(a) Screens.
(b) Classifiers.
(c) Others.
The procedure described in this Standard applies to two-product separations. Performance assessment of multiproduct separations can be achieved by consideration of a series of two-product separations.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
ProductNote	Reconfirmed 19-08-2013
Pages
ISBN
Committee	MN-001
Supersedes	DR 97290 AS 1634-1974