GB/T 477-2008 in English

《GB/T 477-2008煤炭筛分试验方法》由TC42（全国煤炭标准化技术委员会）归口，TC42SC3（全国煤炭标准化技术委员会选煤分会）执行，主管部门为中国煤炭工业协会。
本标准规定了煤炭筛分试验的总则、煤样、筛分试验设备和操作、分析化验项目和结果整理。
本标准适用于测定褐煤、烟煤和无烟煤等煤样各粒级的产率和灰分、水分、硫分等。

1 Scope

This standard specifies the general provisions, coal sample, sieve test equipment and operation, analysis of test items and result interpretation of coal sieve test.

This standard is applicable to the determination of yield, ash content, moisture content, sulfur content, etc. of coal samples such as lignite, bituminite and anthracite.

2 Normative References

The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.

GB 474-1996 Method for Preparation of Coal Sample (eqv ISO 1988: 1975)
GB/T 478 Method for Float and Sink Analysis of Coal (GB/T 478-2008, ISO 7936: 1992, MOD)
GB/T 4757-2001 Methods for the Batch Flotation Testing of Fine Coal
GB/T 6003.1-1997 Test Sieves of Metal Wire Cloth (eqv ISO 3310-1: 1990)
GB/T 6005-1997 Test Sieves - Metal Wire Cloth, Perforated Metal Plate and Electroformed Sheet - Nominal Sizes of Opening (eqv ISO 565: 1990)
GB/T 7186 Terms Relating to Coal Mining - Coal Preparation (GB/T 7186-1998, eqv ISO 1213-1: 1993)
MT/T 109-1996 Test Methods for Coal and Gangue Argillation
MT/T 1034-2006 Method of Sampling Run-of-Mine Coal

3 Terms and Definitions

For the purposes of this standard, the following terms and definitions apply.

Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 General Provisions
5 Coal Sample
6 Equipment
7 Sieving
8 Analysis of Test Items
9 Interpretation of Result
Annex A (Informative) Corresponding Numbering Equivalent Clauses between This Standard and ISO 1953:
Annex B (Informative) Technical Deviations between This Standard and ISO 1953:1994 and Their Justifications
Annex C (Normative) Flow Chart for Raw Coal Sieve Test
Annex D (Informative) Sieve Test Report Form for Natural Fraction
Annex E (Informative) Test Result for Fine Coal Size Analysis