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GB/T 12937-2008 English PDF

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GB/T 12937-2008: Terms relating to coal petrology
Status: Valid

GB/T 12937: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 12937-2008	English	509	Add to Cart	4 days [Need to translate]	Terms relating to coal petrology	Valid	GB/T 12937-2008
GB/T 12937-1995	English	479	Add to Cart	4 days [Need to translate]	Terms relating to coal petrology	Obsolete	GB/T 12937-1995
GB 12937-1991	English	679	Add to Cart	5 days [Need to translate]	Terms relating to coal petrology	Obsolete	GB 12937-1991

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Basic data

Standard ID	GB/T 12937-2008 (GB/T12937-2008)
Description (Translated English)	Terms relating to coal petrology
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	D26
Classification of International Standard	73.040
Word Count Estimation	22,216
Date of Issue	2008-09-18
Date of Implementation	2009-04-01
Older Standard (superseded by this standard)	GB/T 12937-1995
Adopted Standard	ISO 7404-1-1994, MOD
Regulation (derived from)	National Standard Approval Announcement 2008 No.16 (Total No.129)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the macro study of coal humic coal and rock, relevant terminology and microscopic analysis methods. This standard applies to lignite, bituminous coal and anthracite.

GB/T 12937-2008: Terms relating to coal petrology

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Terms relating to coal petrology ICS 73.040 D26 National Standards of People's Republic of China Replacing GB/T 12937-1995 The term of coal (ISO 7404-1.1994, Methodsforthepetrographicanalysisof bituminouscoalandanthracite-Part 1. Vocabulary, MOD) Posted 2008-09-18 2009-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Preface Ⅰ 1 Scope 1 2 bituminous coal and anthracite coal rock 1 term The term lignite coal and rock 3 6 4 of coal microscopic test method terminology 8 Appendix A (informative) The standard entry number and ISO 7404-1.1994 entries Number Control 10 Annex B (informative) The standard entry number and ISO 7404-1.1994 technical differences and their reasons 11 Pinyin index 13 English equivalents index 15

Foreword

This revised standard adopts ISO 7404-1.1994 "bituminous coal and anthracite coal and rock analysis methods --- Part 1. Terminology" (English Chinese Version). This standard replaces GB/T 12937-1995 "terms of coal and rock." The revised standard reads as follows. --- Cancel half term vitrinite and its components, inertinite increased secretion of body terms, microscopic mineral type added five new terminology, Test Methods term increase in fluorescence component terms. --- Increase in Appendix A, for the ISO 7404-1.1994 entries related to cross-reference number. --- Increase in Appendix B, for the ISO 7404-1.1994 about the technical differences between mutual controls. --- Increase in Chinese pinyin and English equivalents index. This standard is based on ISO 7404-1.1994 redrafted. For ease of comparison, in Appendix A lists the standard terms of the number and ISO 7404-1.1994 control list entries numbered. Consider China's national conditions, in the use of ISO 7404-1.1994 when you made some changes. These technical differences identified in it a single vertical line Margin were involved in terms of pages. List of technical differences and the reasons given in Appendix B for reference. For ease of use, this standard also made the following editorial changes. a) "this International Standard" be replaced by "this standard"; b) Remove the foreword and introduction of international standards. The Standard Appendix A, Appendix B is an informative annex. The standard proposed by China Coal Industry Association. This standard by the National Standardization Technical Committee of Coal. This standard was drafted. Coal Research Institute, Xi'an Institute. The main drafters of this standard. Qun, Li Xiaoyan. This standard replaces the standards previously issued as follows. --- GB/T 12937-1991, GB/T 12937-1995. The term of coal

1 Scope

This standard specifies the relevant terminology macro, micro and analytical methods of coal humic Studies coal rocks. This standard applies to lignite, bituminous coal and anthracite.

2 bituminous coal and anthracite coal and rock term

2.1 Visually identify the basic unit of humic coals. 2.1.1 Coal strongest luster, black, uniform, brittle, endogenous component of coal and rock fracture development. 2.1.2 Coal luster strong, bright views with constituents of coal texture. 2.1.3 Coal glossy dark, dense and hard, uneven coal and rock composition. 2.1.4 Coal silky luster, fibrous structure, brittle coal rock composition. 2.2 Based on overall strength and luster of coal relative to divide the light component content type, to a certain extent reflect the composition of coal composition. 2.2.1 Coal strongest overall relative luster macro type of coal, the light component content greater than 80%. 2.2.2 Overall coal relatively strong macro shiny coal and rock type, its light component content greater than 50% to 80%. 2.2.3 Overall coal relatively weak macro shiny coal and rock type, its light component content greater than 20% to 50%. 2.2.4 Coal weakest overall relative luster macro type of coal, the light component content is less than 20%. 2.3 An integral unit under the microscope discernible coal.

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