GB/T 217-2008 English PDF

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GB/T 217-2008: Determination of true relative density of coal
Status: Valid

GB/T 217: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 217-2008	169	Add to Cart	3 days	Determination of true relative density of coal	Valid
GB/T 217-1996	239	Add to Cart	2 days	Determination of true relative density of coal	Obsolete
GB 217-1981	199	Add to Cart	2 days	Determination of the specific gravity of coal	Obsolete

Similar standards

GB/T 220   GB/T 219   GB/T 214   GB/T 211   GB/T 218   GBZ/T 217   

Basic data

Standard ID: GB/T 217-2008 (GB/T217-2008)
Description (Translated English): Determination of true relative density of coal
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D21
Classification of International Standard: 73.040
Word Count Estimation: 7,779
Date of Issue: 2008-07-29
Date of Implementation: 2009-05-01
Older Standard (superseded by this standard): GB/T 217-1996
Quoted Standard: GB/T 212
Regulation (derived from): National Standard Approval Announcement 2008 No.12 (Total No.125)
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 truth coal density determination of terms and definitions, method feeds, reagents and materials, equipment, measuring step, results of calculation and precision. This standard applies to anthracite, bituminous coal and lignite.

GB/T 217-2008: Determination of true relative density of 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 true relative density of coal ICS 73.040 D21 National Standards of People's Republic of China Replacing GB/T 217-1996 The truth of the coal density determination Posted 2008-07-29 2009-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 217-1996 "coal density determination of the truth." This standard compared with GB/T 217-1996, the main changes are. --- According to GB/T 1.1-2000 "Standardization Guide Part 1. Standard structure and writing rules" and GB/T 483- 2007 "Test methods for coal analysis General Provisions" revised written format, increasing the foreword, terms and definitions, test report. --- Modify the density bottle figure error, the original 60mL to 50mL (the original 5.4, this version 6.3). The standard proposed by China Coal Industry Association. This standard by the National Standardization Technical Committee of Coal. This standard was drafted. CCRI coal analysis laboratory. The main drafters of this standard. Dengxiu Min, Shi Yuying. This standard replaces the standards previously issued as follows. --- GB/T 217-1963, GB/T 217-1996. The truth of the coal density determination

1 Scope

This standard specifies the truth of coal density determination of terms and definitions, methods feeds, reagents and materials, equipment, measuring step, junction If the calculation and precision. This standard applies to anthracite, bituminous and lignite.

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 212 industrial analysis of coal (GB/T 212-2008, ISO 11722.1999, ISO 1171.1997, ISO 562. 1998, NEQ)

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 20 ℃, mass ratio of coal (not including coal pores) with the quality and volume of water.

4 Method summary

Sodium dodecyl sulfate solution as wetting agents, the coal sample vial wet density settlement and exclude gas adsorption, according to the coal discharged The same volume of water mass calculated density of coal truth.

5 Reagents and materials

Sodium dodecyl sulfate. chemically pure, 20g/L. Weigh 20g sodium lauryl sulfate is dissolved in water and diluted to 1L.

6 Equipment

6.1 Analysis of balance. a sense of the amount of 0.1mg. 6.2 constant temperature water bath. Temperature range 10 ℃ ~ 35 ℃, temperature control accuracy of ± 0.5 ℃. 6.3 Density bottle. with a ground capillary stopper, capacity 50mL, as shown in FIG. 6.4 Graduated pipettes. capacity 10mL. 6.5 mercury thermometers. 0 ℃ ~ 50 ℃, the minimum scale 0.2 ℃. ......

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