GB/T 4757-2025 Active National standards

GB/T 4757-2025 Methods for the batch-flotation testing of fine coal

GB/T 4757-2025 Methods for the batch-flotation testing of fine coal

Publish Date: 2025-08-29 Implement Date: 2026-03-01 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 4757-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Coal sorting

ICS Name: \nCoal

Publish Date: 2025-08-29

Implement Date: 2026-03-01

Pages: 20 pages

Scope

This document specifies the coal samples, testing equipment and tools for flotation tests in the coal powder (mud) laboratory unit, the calculation of the amount of test coal samples and flotation agents, comparative flotation tests, and flotation parameter tests.
This document is applicable to bituminous coal and non-bituminous coal.

Development Information

Word Count: 33 Thousand words Pages: 20 pages

Replace the following standards

GB/T 4757-2013 Methods for the batch flotation testing of fine coal

Referenced Standards

GB/T 211-1996 Determination of total moisture in coal GB/T 211-2007 Determination of total moisture in coal GB/T 211-2017 Determination of total moisture in coal GB/T 212-2001 Proximate analysis of coal GB/T 212-2008 Proximate analysis of coal GB/T 213-1996 Determination of calorific value of coal GB/T 213-2003 Determination of calorific value of coal GB/T 213-2008 Determination of calorific value of coal GB/T 214-1996 Determination of total sulfur in coal GB/T 214-2007 Determination of total sulfur in coal GB/T 475-2008 Method for manual sampling of commercial coal GB/T 477-1998 Method for size analysis of coal GB/T 477-2008 Method for size analysis of coal GB/T 30047-2013 Methods for evaluating the flotability of fine coal GB/T 30049-2013 Test method for washability of coal core sample GB/T 34164-2017 Method for evaluation of flotation technological performance in coal preparation plant GB/T 214-2026 Determination of total sulfur in coal

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