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GB/T 20475.4-2012: Classification for content of harmful elements in coal -- Part 4: Mercury
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 20475.4-2012 | English | 78 |
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Classification for content of harmful elements in coal -- Part 4: Mercury
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GB/T 20475.4-2012
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Basic data | Standard ID | GB/T 20475.4-2012 (GB/T20475.4-2012) | | Description (Translated English) | Classification for content of harmful elements in coal -- Part 4: Mercury | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D20 | | Classification of International Standard | 73.040 | | Word Count Estimation | 5,511 | | Quoted Standard | GB 474; GB 475; GB/T 482; GB/T 16659; GB/T 19494.1; GB/T 19494.2; MT/T 988 | | Regulation (derived from) | National Standards Bulletin No. 41 of 2012 | | 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 mercury content of coal on dry base w (Hgd) range classification, nomenclature and code, as well as production, processing and utilization of coal mercury content requirements. This standard applies to coal exploration, product | GB/T 20475.4-2012: Classification for content of harmful elements in coal -- Part 4: Mercury---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.
ICS73.040
D20
National Standards of People's Republic of China
The content of harmful elements in coal classification - Part 4. Mercury
Classificationforcontentofharmfulelementsincoal-Part 4. Mercury
Issued on. 2013-10-01 2012-12-31 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard rule according to GB/T 1.1-2009 given draft.
The standard proposed by China Coal Industry Association.
This standard coal by the National Standardization Technical Committee (SAC/TC42) centralized.
This standard was drafted. Coal Research Institute Beijing Coal Chemical Research Branch.
The main drafters of this standard. Bai Xiangfei, even Beijing, Luo Yun-Fei, Jiang Ying, Shao many have suggested.
The content of harmful elements in coal classification - Part 4. Mercury
1 Scope
This standard specifies the mercury content of the coal by dry basis w (Hgd) range classification, name and code, as well as coal production, processing and utilization of
Mercury content requirements.
This standard applies to coal exploration, production, processing, marketing and utilization.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB 474 coal sample preparation
GB 475 commercial coal artificial method adopted
GB/T 482 seam coal sampling method
GB/T 16659 Determination of mercury in coal
GB/T 19494.1 coal mechanization sampling - Part 1. Sampling
Part 2 GB/T 19494.2 Mechanical sampling of coal. coal sample preparation
MT/T988 production of coal sampling method
3 mercury concentrations in coal classification, nomenclature and code
Mercury concentrations in coal classification, nomenclature and the code shown in Table 1.
Table 1 mercury concentrations in coal grade
Level Name Code of mercury content in the range w (Hgd)/(μg/g)
Laid low mercury coal Hg-1 ≤0.150
Low mercury coal Hg-2 > 0.150 ~ 0.250
Mercury in coal Hg-3 > 0.250 ~ 0.600
High mercury coal Hg-4 > 0.600
4 the use of coal in coal mercury content requirements
4.1 power coal mercury content requirements
Power coal mercury content w (Hgd) not more than 0.600μg/g.
4.2 coking coal mercury content requirements
Coking coal mercury content w (Hgd) not more than 0.250μg/g.
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