Standard
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AS 4156.1.1:2018
[Current]Coal preparation, Part 1.1: Higher rank coal - Float and sink testing
This Standard sets out the requirements for determining the float and sink characteristics of higher rank coal (refer to AS 2096) and sets out procedures for deriving test samples and methods for presenting the washability data.
Published: 23/11/2018
Pages: 42
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Normative references
1.3 Terms and definitions
2 Sampling
2.1 Sample mass
2.2 Coal preparation plant samples
2.3 Borecore samples
3 Sample pre-treatment
4 Sample preparation for analysis after float and sink testing
5 Analysis and testing
6 Separation media
6.1 General
6.2 Organic solutions
6.2.1 General
6.2.2 Limitations on accuracy
6.3 Inorganic solutions
6.3.1 General
6.3.2 Formate solutions
6.3.2.1 General
6.3.2.2 Limitations on accuracy
6.3.2.3 Preparation of solutions
6.3.2.4 Sample rinsing
6.3.2.5 Recovery of media
6.4 Aqueous suspensions
6.4.1 General
6.4.2 Zirconium dioxide
6.4.2.1 General
6.4.2.2 Limitations on accuracy
6.4.2.3 Preparation of suspension
6.4.2.4 Sample rinsing
6.4.2.5 Recovery of media
7 Apparatus
7.1 General
7.2 Coarse coal apparatus
7.2.1 General
7.2.2 Rectangular or cylindrical tank
7.2.3 Inner mesh basket
7.2.4 Mesh scoop of suitable aperture
7.2.5 Stirring rods
7.2.6 Hydrometers
7.2.7 Sample containers
7.2.8 Drying trays
7.2.9 Sample labels
7.2.10 Lids for media containers
7.2.11 Balance
7.2.12 Air-swept drying cabinet
7.2.13 Filtration apparatus
7.3 Fine coal apparatus
7.3.1 General
7.3.2 Glass separating flask
7.3.3 Stirring rods
7.3.4 Hydrometers
7.3.5 Sample containers
7.3.6 Drying trays
7.3.7 Sample labels
7.3.8 Lids for media containers
7.3.9 Balance
7.3.10 Air-swept drying cabinet
7.3.11 Filtration apparatus
7.3.12 Test sieves
8 Float and sink procedures
8.1 General
8.2 Relative densities of test media
8.3 Procedures
8.3.1 Testing of coarse size fractions
8.3.1.1 General
8.3.1.2 Procedure
8.3.1.3 Air drying
8.3.2 Testing of fine size fractions
8.3.2.1 General
8.3.2.2 Procedure
8.3.2.3 Air drying
8.4 Cleaning of liquid media and apparatus
9 Calculation and expression of results
10 Test report
Appendix A
A.1 General
A.2 Calibration of hydrometers using reference hydrometers
A.2.1 Apparatus
A.2.2 Procedure
A.3 Calibration of hydrometers using a medium of known relative density
A.3.1 Apparatus
A.3.2 Procedure
Appendix B
B.1 General
B.2 General mass calculation examples
B.3 Impact of lower masses
B.4 Bore core samples
Appendix C
C.1 General
C.2 Before commencing the float and sink test
C.3 Immediately following the float and sink test and before sample preparation
C.4 After determination of ash
Appendix D
D.1 General
D.2 Risk assessment
D.3 Workplace design
D.4 Hazard control
D.4.1 General
D.4.2 Safety Data Sheets
D.4.3 Ventilation
D.4.4 Storage
D.4.5 Disposal
D.4.6Monitoring
Appendix E
E.1 General
E.2 Sampling
E.3 Apparatus
E.4 Procedure
Appendix F
F.1 General
F.2 Float and sink data
F.3 Washability curves
F.4 Expression of efficiency of a separation process
Bibliography
Cited references in this standard
[Current]
Hard coal and coke - Mechanical sampling - Part 4: Coal - Preparation of test samples
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