GB/T 20475.4-2012 English PDF

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GB/T 20475.4-2012: Classification for content of harmful elements in coal -- Part 4: Mercury
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 20475.4-2012	78	Add to Cart	1 days	Classification for content of harmful elements in coal -- Part 4: Mercury	Valid

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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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