This standard specifies terms and definitions, sample constitution, reduction, mixing, division and air-drying for coal sample preparation, the preparation of various coal samples and reserve sample.
This standard is applicable to lignite, bitumite and hard coal.
Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 General and Precision of Sample Preparation 4.1 General of Sample Preparation 4.2 Sample Preparation Precision 5 Apparatus 6 Constitution of Sample 7 Division 7.1 General 7.2 Minimum Mass of the Divided Sample 7.3 Mechanical Methods 7.4 Manual Methods 8 Reduction 9 Mixing 10 Air-drying 11 Preparation of Various Coal Samples 11.1 Types of Coal Sample 11.2 Moisture Sample of Coal 11.3 General-analysis Test Sample of Coal 11.4 Common Sample of Coal 11.5 Size Analysis Sample of Coal 11.6 Coal Samples for other Tests 12 Reserve Sample Appendix A (Informative) Comparison of Chapter and Article Numbers between this Standard and ISO 18283: 2006(E) Appendix B (Informative) Technical Differences between this Standard and ISO 18283: 2006(E) and the Reasons Appendix C (Normative) Verification for Precision of Sample Preparation and Assays and Bias Test Appendix D (Normative) Method for Flotation of Coal Sample
This standard specifies terms and definitions, sample constitution, reduction, mixing, division and air-drying for coal sample preparation, the preparation of various coal samples and reserve sample.
This standard is applicable to lignite, bitumite and hard coal.
Contents of GB 474-2008
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 General and Precision of Sample Preparation
4.1 General of Sample Preparation
4.2 Sample Preparation Precision
5 Apparatus
6 Constitution of Sample
7 Division
7.1 General
7.2 Minimum Mass of the Divided Sample
7.3 Mechanical Methods
7.4 Manual Methods
8 Reduction
9 Mixing
10 Air-drying
11 Preparation of Various Coal Samples
11.1 Types of Coal Sample
11.2 Moisture Sample of Coal
11.3 General-analysis Test Sample of Coal
11.4 Common Sample of Coal
11.5 Size Analysis Sample of Coal
11.6 Coal Samples for other Tests
12 Reserve Sample
Appendix A (Informative) Comparison of Chapter and Article Numbers between this Standard and ISO 18283: 2006(E)
Appendix B (Informative) Technical Differences between this Standard and ISO 18283: 2006(E) and the Reasons
Appendix C (Normative) Verification for Precision of Sample Preparation and Assays and Bias Test
Appendix D (Normative) Method for Flotation of Coal Sample
