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GB/T 20966-2007: Determination of particle size distribution for colliery powers
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 20966-2007 | English | 239 |
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Determination of particle size distribution for colliery powers
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GB/T 20966-2007
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Basic data | Standard ID | GB/T 20966-2007 (GB/T20966-2007) | | Description (Translated English) | Determination of particle size distribution for colliery powers | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D09 | | Classification of International Standard | 13.100 | | Word Count Estimation | 9,948 | | Date of Issue | 2007-07-02 | | Date of Implementation | 2008-01-01 | | Regulation (derived from) | National Standard Announcement 2007 No.6 (Total No.106) (National-Standard-Commission) | | 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 application of light through gravitational sedimentation method side given coal dust particle size distribution using reagents, instrumentation and sample preparation, fixed side steps, material. The measurement results presentation and measurement reports. This standard applies to coal dust, determination of rock dust filter dust and particle size distribution. | GB/T 20966-2007: Determination of particle size distribution for colliery powers---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of particle size distribution for colliery powers
ICS 13.100
D09
National Standards of People's Republic of China
Coal dust particle size distribution measurement method
Posted 2007-07-02
2008-01-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard Annex A, Annex B and Annex C is informative appendix.
The standard proposed by China Coal Industry Association.
This standard is under the jurisdiction of the coal industry Coal Standardization Technical Committee on Security.
This standard was drafted. Coal Research Institute Chongqing Branch.
The main drafters of this standard. Wang Ziliang, Sui Jinjun, Li Dewen, silver Zhuang Lu.
Coal dust particle size distribution measurement method
1 Scope
This standard specifies the method for the determination of light through the application of gravity sedimentation reagents, materials, instruments and sample preparation of coal mine dust particle size distribution using the measurement step
Suddenly, the measurement results presentation and measurement report.
This standard applies to coal dust, rock dust and determination of particle size distribution of dust filters.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 678-2002 Chemical Reagent alcohol (ethanol) (ISO 6353-2. 1983, NEQ)
GB/T 1345 Test method for fineness of cement sieve analysis
GB/T 6003.1 woven wire mesh screen test (GB/T 6003.1-1997, eqv ISO 3310-1.1990)
GB/T 6524-2003 measuring gravity metal powder particle size distribution sedimentation light transmission method (ISO 10076.1991, IDT)
HG/T 3498-1999 butyl acetate Chemicals
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
Sampler dust collected on the filter.
3.2
Not with all the dust samples collected, including natural dust, and coal dust underground subsidence (rock) block broken dust.
3.3
Dust in suspension, due to gravity sedimentation, by measuring the amount of attenuation of the light beam passing through the suspension is used to calculate the particle size fraction
The method of cloth.
4 Symbol
Table 1 shows the standard symbol meaning.
Table 1 standard symbolic meaning
Symbol Definition Unit Remarks
L absorption length m beam path through the length of the suspension
H height m Settlement
Ba 0 initial mass concentration g/cm3
ρ1 liquid density g/cm3
Dust ρe true density g/cm3
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