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GB/T 30047-2013Method for evaluating the flotability of fine coal (English PDF)

煤粉（泥）可浮性评定方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 17, 2013

Implementation date

May 1, 2014

Scope

GB/T 30047-2013 is the English-translated version of 煤粉（泥）可浮性评定方法.

GB/T 30047-2013 is the Chinese standard "Method for evaluating the flotability of fine coal". Its scope clause reads: This standard specifies the pulverized coal (mud) Flotability terms and definitions, assessment methods and rating and float division indicators.

This standard applies to a particle size of less than 0.5mm of bituminous coal and anthracite. Its clauses include terms and definitions; evaluation method.

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Document preview — GB/T 30047-2013

National Standard of the People's Republic of China

ICS: 73.040
Classification: D 27

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope
2 Normative references
3 Terms and Definitions
4 Evaluation Method

1 Scope

This standard specifies the pulverized coal (mud) Flotability terms and definitions, assessment methods and rating and float division indicators.

This standard applies to a particle size of less than 0.5mm of bituminous coal and anthracite.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 7186 PREPARATION term (GB/T 7186-2008, ISO 1213-1.1993, MOD)

GB/T 16417 coal washability assessment method

GB/T 30046.2 pulverized coal (mud) flotation testing - Part 2. Test method for evaluating the order

3 Terms and Definitions

GB/T 7186 defined by the following terms and definitions apply to this document.

3.1 Pulverized coal (mud) coalfines (slime)

Particle size less than 0.5mm of dry coal (called wet slime).

4 Evaluation Method

4.1 Evaluation indicators

Coal combustible body recovery Ec (%).

4.2 Calculation of Evaluation Index

Evaluation Index calculated as follows.

a) determining the ash content Ad, c (%);

b) in accordance with GB/T 30046.2 sequential evaluation test, drawing the yield based on the experimental data - the cumulative curve ash floating objects, press OK The ash content Ad, c (%) isolated from coal theoretical yield curve gammac (%);

c) according to equation (1) to calculate Ec, the results after taking one decimal place, where the yield value and ash taken two decimal places.

Ec =

gammac (100-Ad, c)

100-Ad, f (1)

Where.

Ec --- coal combustible body recovery,%;

gammac --- coal theoretical yield,%;

Ad, c --- coal ash on a dry basis,%;

Ad, f --- feeding dry ash,%.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Cited by

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

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