AS 1038.21.2-1992

1 - AS 1038.21.2-1992 COAL AND COKE - ANALYSIS AND TESTING - HIGHER RANK COAL AND COKE - RELATIVE DENSITY - LUMP SAMPLE
4 - PREFACE
4 - CONTENTS
5 - 1 SCOPE
5 - 2 REFERENCED DOCUMENTS
5 - 3 DEFINITIONS
5 - 3.1 Relative density of lump sample
5 - 3.2 Coke
5 - 3.3 Higher rank coal (as defined in AS 2096)
5 - 4 PRINCIPLE
5 - 5 SAFETY
5 - 6 APPARATUS
6 - 7 SAMPLE
6 - 7.1 Coal
6 - 7.2 Coke
6 - 8 IMMERSION METHOD (COAL)
6 - 8.1 Procedure
6 - 8.2 Calculation of result
6 - 9 PARAFFIN WAX FILM METHOD (COAL)
6 - 9.1 Procedure
6 - 10 DRAINAGE METHOD (COKE)
6 - 10.1 Procedure
7 - 10.2 Calculation of result
7 - 11 REPORTING OF RESULT
7 - 12 PRECISION
7 - 13 TEST REPORT

Sets out two methods for the determination of the relative density of bulk samples of coal, and one method for coke.

This Standard sets out two methods for the determination of the relative density of bulk samples of coal, and one method for coke.The methods are as follows:(a) Coal(i) Immersion method This method is applicable to porous coals and single-lump samples that do not break down in water, and for coals that do not absorb water to a significant extent under the conditions of the test.(ii) Paraffin wax film method This method is applicable to single-lump samples or samples containing a relatively small number of lumps, each of which may be hand-coated with an impervious wax film.(b) Coke The drainage method is used to take into account the difficulties in the determination of the relative density of coke due to water draining out of large pores after immersion in water. This may be overcome by limiting the drainage period to 10 s.

First published as part of AS 1038.21-1983.
Revised and redesignated in part as AS 1038.21.2-1992.