AS 1038.1-1992

1 - AS 1038.1-1992 COAL AND COKE - ANALYSIS AND TESTING - HIGHER RANK COAL - TOTAL MOISTURE
4 - PREFACE
5 - CONTENTS
6 - SECTION 1 SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 REFERENCED DOCUMENTS
6 - 1.3 DEFINITIONS
6 - 1.3.1 Higher rank coal
6 - 1.3.2 Total moisture
6 - 1.3.3 Free moisture
6 - 1.3.4 Moisture in the air-dry sample (residual moisture)
6 - 1.3.5 Gross sample
6 - 1.3.6 Common sample
6 - 1.3.7 Moisture sample
6 - 1.4 SAFETY
6 - 1.5 SAMPLES
6 - 1.5.1 General
6 - 1.5.2 Types of samples to be tested
7 - 1.5.3 Precautions against loss of moisture
7 - 1.5.4 Sample mass
7 - 1.5.5 Maximum particle size
7 - 1.5.6 As-received samples
7 - 1.6 CALCULATION OF TOTAL MOISTURE
7 - 1.6.1 Sample air-dry
7 - 1.6.2 Sample not air-dried
7 - 1.7 PRECISION
7 - 1.8 REPORTING OF RESULT
7 - 1.9 TEST REPORT
8 - SECTION 2 DETERMINATION OF FREE MOISTURE
8 - 2.1 SCOPE
8 - 2.2 PRINCIPLE
8 - 2.3 APPARATUS
8 - 2.3.1 General
8 - 2.3.2 Oven
8 - 2.3.3 Sample trays
8 - 2.3.4 Weighing device
8 - 2.4 DRYING TIME
8 - 2.5 PROCEDURE
8 - 2.6 CALCULATION OF RESULT
9 - SECTION 3 DETERMINATION OF MOISTURE IN THE AIR-DRY SAMPLE (RESIDUAL MOISTURE)
9 - 3.1 SCOPE
9 - 3.2 DISTILLATION (METHOD A)
9 - 3.2.1 Principle
9 - 3.2.2 Reagent
9 - 3.2.3 Apparatus
9 - 3.2.4 Calibration
9 - 3.2.5 Procedure
10 - 3.2.6 Calculation of result
10 - 3.3 DRYING IN NITROGEN (METHOD B)
10 - 3.3.1 Principle
10 - 3.3.2 Reagents
10 - 3.3.3 Apparatus
10 - 3.3.4 Procedure
10 - 3.3.5 Calculation of result
10 - 3.4 DRYING IN AIR (METHOD C)
10 - 3.4.1 Principle
10 - 3.4.2 Apparatus
13 - 3.4.3 Procedure
13 - 3.4.4 Calculation of result
14 - APPENDIX A - PREFERRED SCHEME FOR DETERMINATION OF TOTAL MOISTURE

Sets out three methods - distillation, drying in nitrogen and drying in air - for the determination of the total moisture content of higher rank coal. A method for determination of free moisture is also included.

This Standard sets out methods for the determination of total moisture, free moisture and residual moisture in higher rank coal. The methods are as follows:(a) Drying in air, for free moisture.(b) Distillation (Method A), for residual moisture.(c) Drying in nitrogen (Method B), for residual moisture.(d) Drying in air (Method C), for residual moisture.Methods A and B are applicable to all higher rank coals. Method C is applicable only to higher rank coals that are known not to be susceptible to significant oxidation.Where the sample is visibly wet, determination of residual moisture by Method A, B or C is generally preceded by the determination of free moisture, unless the sample is suitable for the direct determination of total moisture using Method C.

First published as part of AS CK2.3-1949.
Revised and redesignated in part as AS K152.1-1965 (endorsement of BS 1016.1-1957 with amendment).
AS K152.1-1965 withdrawn 1978.
AS K152.1-1965 revised and redesignated AS 1038.1-1980.
Second edition 1992.