GB/T 46291-2025 Active National standards

GB/T 46291-2025 General rules of coal petrographic analysis

Publish Date: 2025-10-05 Implement Date: 2026-05-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 46291-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: \nCoal rock

ICS Name: \nCoal

Publish Date: 2025-10-05

Implement Date: 2026-05-01

Pages: 12 pages

Scope

This document specifies the classification and naming related to coal rock analysis tests, the collection and preparation of coal rock samples, analysis and testing, result expression, method precision, testing records, and testing reports.
This document is applicable to various coal rock analysis test methods, standards, and documents.

Development Information

Word Count: 10 Thousand words Pages: 12 pages

Referenced Standards

GB 474-1996 Preparation of coal sample GB/T 474-2008 Method for preparation of coal sample GB 475-1996 Sampling for commercial coal GB/T 475-2008 Method for manual sampling of commercial coal GB/T 6948-1998 Microscopical determination of the reflectance of vitrinite in coal GB/T 6948-2008 Method of determining microscopically the reflectance of vitrinite in coal GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 8899-1998 Determination of maceral group composition and minerals in coal GB/T 8899-2013 Determination of maceral group composition and minerals in coal GB/T 12937-1995 Terms relating to coal petrology GB/T 12937-2008 Terms relating to coal petrology GB/T 15588-2001 Classification of macerals for bituminous coal GB/T 15588-2013 Classification of macerals for bituminous coal GB/T 15589-1995 Classification of microlithotype GB/T 15589-2013 Classification of microlithotype GB/T 15590-1995 Determination of microlithotype composition GB/T 15590-2008 Method of determining microlithotype composition GB/T 16773-1997 Method of preparing coal samples for the coal petrographic analysis GB/T 16773-2008 Method of preparing coal samples for the coal petrographic analysis GB/T 18023-2000 Classification of macrolithotype for bituminous coal GB/T 19222-2003 Sampling of coal petrology GB/T 19494.1-2004 Mechanical sampling of coal—Part 1:Method for sampling GB/T 19494.1-2023 Mechanical sampling of coal—Part 1:Method for sampling GB/T 40485-2021 Method of determining automatically the random reflectance of vitrinite in coal—Image analysis method GB/T 44355-2024 Automatic determination of maceral group composition in coal—Image analysis method GB/T 46288-2025 Maceral classification for brown coals and lignites GB/T 46289-2025 Macrolithotype classification for brown coals and lignites MT 264-1991 The method for determining the microhardness of coal MT/T 264-2025 Method for Vickers microhardness of coal

Related Standards

GB 5751-1986 Replaced

GB 5751-1986 Classification of Chinese coals

Publish Date: 1986-01-09

GB 481-1993 abolished_transferred

GB 481-1993 Sampling method of coal sample for production

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GB/T 15223-1994 Replaced

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GB/T 15224.1-1994 Replaced

GB/T 15224.1-1994 Classification for quality of coal—Classification for ash yield of coal

Publish Date: 1994-09-24

GB/T 15224.2-1994 Replaced

GB/T 15224.2-1994 Classification for quality of coal—Classification for sulphur content of coal

Publish Date: 1994-09-24

GB/T 15224.3-1994 Replaced

GB/T 15224.3-1994 Classification for quality of coal—Classification for calorific value of coal

Publish Date: 1994-09-24