Search result: GB/T 30047-2013
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| GB/T 30047-2013 | English | 149 |
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Methods for evaluating the floatability of fine coal
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GB/T 30047-2013
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| Standard ID | GB/T 30047-2013 (GB/T30047-2013) | | Description (Translated English) | Methods for evaluating the flotability of fine coal | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D27 | | Classification of International Standard | 73.040 | | Word Count Estimation | 5,513 | | Quoted Standard | GB/T 7186; GB/T 16417; GB/T 30046.2 | | 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 pulverized coal (mud) Flotability terms and definitions, assessment methods and Flotability grade and division indicators. This standard applies to a particle size of less than 0. 5mm of bituminous coal and anthracite. |
GB/T 30047-2013
Methods for evaluating the flotability of fine coal
ICS 73.040
D27
National Standards of People's Republic of China
Pulverized coal (mud) can float assessment method
Issued on. 2013-12-17
2014-05-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The standard proposed by China Coal Industry Association.
This standard coal by the National Standardization Technical Committee (SAC/TC42) centralized.
This standard was drafted. Tangshan Coal Science Research Institute, the world (Tangshan) Mining Co., Ltd., Tangshan Science and Technology have
Limited.
The main drafters of this standard. Cheng Hongzhi, Shi Huan, Liu Chunyan, Shi Yingxiang, Weichang Jie, Wenhua, Gu Shaoxiong.
This standard was first formulated.
Pulverized coal (mud) can float assessment 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 γc (%);
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 =
γc (100-Ad, c)
100-Ad, f
(1)
Where.
Ec --- coal combustible body recovery,%;
γc --- coal theoretical yield,%;
Ad, c --- coal ash on a dry basis,%;
Ad, f --- feeding dry ash,%.
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