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GB/T 19224-2017: Determination of the relative degree of oxidation in bituminous coal
Status: Valid GB/T 19224: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 19224-2017 | English | 139 |
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Determination of the relative degree of oxidation in bituminous coal
| Valid |
GB/T 19224-2017
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| GB/T 19224-2003 | English | 199 |
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Determining the relative degree of oxidation in bituminous coal
| Obsolete |
GB/T 19224-2003
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PDF similar to GB/T 19224-2017
Basic data | Standard ID | GB/T 19224-2017 (GB/T19224-2017) | | Description (Translated English) | Determination of the relative degree of oxidation in bituminous coal | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D21 | | Word Count Estimation | 7,721 | | Date of Issue | 2017-09-07 | | Date of Implementation | 2018-04-01 | | Older Standard (superseded by this standard) | GB/T 19224-2003 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic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 | GB/T 19224-2017: Determination of the relative degree of oxidation in bituminous coal---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 the relative degree of oxidation in bituminous coal
ICS 73.040
D21
National Standards of People's Republic of China
Replacing GB/T 19224-2003
Determination of relative oxidation degree of bituminous coal
2017-09-07 Posted
2018-04-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Directory
Foreword Ⅲ
1 Scope 1
2 Normative references 1
3 Method summary 1
4 Reagents and materials 1
5 equipment 1
6 determination step 2
7 Results Calculation and Presentation 2
8 Method precision 2
9 Test Report 3
Appendix A (informative) Test result description 4
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 19224-2003 "Determination of relative oxidation of bituminous coal." This standard compared with GB/T 19224-2003,
In addition to editorial changes, the main technical content changes as follows.
--- Increasing the wetting agent (see 4.1);
--- The test coal particle size from less than 3mm to less than 0.2mm (see 6.1,.2003 Edition Chapter 6);
--- Added "test report" chapter (see Chapter 9).
This standard is proposed by China Coal Industry Association.
This standard by the National Coal Standardization Technical Committee (SAC/TC42) centralized.
This standard was drafted unit. Coal Science and Technology Research Institute Co., Ltd. testing branch.
The main drafters of this standard. Sui Yan, Fu Kun, Yang Ni.
This standard was previously issued version.
--- GB/T 19224-2003.
Determination of relative oxidation degree of bituminous coal
1 Scope
This standard specifies the method of alkaline extraction method for determination of relative oxidation of bituminous coal feed, reagents and materials, equipment, determination steps, the results of the meter
Computation and expression, method precision and test report.
This standard applies to natural conditions of bituminous coal oxidation.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 483 Methods of analysis of coal - General provisions of test methods
3 method summary
A certain amount of bituminous coal extract with sodium hydroxide solution after the oxidation of humic acid, the alkali extract colorimetric determination, according to the solution of
Light transmittance to determine the relative oxidation of bituminous coal.
4 Reagents and materials
Unless otherwise specified, only reagents identified as analytically pure and distilled or deionized water or rather pure water are used in the assay.
4.1 Wetting agents. Octylphenoxypolyethoxyethanol nonionic surfactant, 100% strength, should not be diluted.
Note Wetting agents can also use 20g/L sodium lauryl sulfate solution.
4.2 sodium hydroxide solution .1mol/L. Weigh sodium hydroxide 40g, dissolved in water and diluted to 1000mL.
4.3 filter paper. Qualitative medium-speed filter paper.
5 equipment
5.1 Spectrophotometer.
5.2 cuvette. 10mm.
5.3 hot plate or electric furnace. Temperature adjustable.
5.4 Balance. Divide the value of 0.001g.
5.5 Thermometer. Range 0 ℃ ~ 100 ℃, the smallest sub-value of 0.5 ℃.
5.6 Timer. Can be timed to 30min, accurate to seconds.
5.7 measuring tube .100mL.
5.8 beaker .400mL.
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