GB/T 217-2008 in English

VALID

Determination of true relative density of coal

Issued on:2008-07-29
Implemented on:2009-05-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $100.00
$97.00

Standard No:	GB/T 217-2008
Document status:	VALID
Title in English:	Determination of true relative density of coal
Title in Chinese:	煤的真相对密度测定方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2008-07-29
Implemented on:	2009-05-01
Superseding:	GB/T 217-1996 Determination of true relative density of coal
ICS Classification:	73.040-Coals
Chinese Classification:	D21-Coal analysis methods
Professional Classification:	GB-National Standard
Related Keywords:	coal determination true relative density determination procedures coal sample coal ratio
Related Topics:	relative density device true density meter Density determination method Density of briquette Density measurement standard Density measurement standard relative quantitative pcr Density measurement standard Material Relative Density Test relative quantification stage the truth Coating Relative Density control relative density relative density iec True Density Test Standard True Density Test Method True Density Measurement Conditions relative activity True Density Test Method relative limit of quantitation relative confidence True Density Detection The relative density of the mixture solid relative density method How is relative abundance measured? True Density Meter relative quantitative pcr relative abundance Vacuum Density Meter imported true density meter True Density Tester True Density Meter True Density Determination Method Relative Quantitative Analysis Methods Drainage method for density determination Solid Relative Density Measurement Method Relative Atomic Mass Determination Method relative ct method api degree relative density Relative viscosity measuring device relative range relative value true density experiment Relative viscosity measuring device true density measurement True Density Measurement Method oral relative density Relative Quantitative Test Method Density determination method True Density Meter relative density control pcr relative quantification National standard of true density True Density Moisture Content True density measuring device Measured value of true density meter Principle of True Density Meter Determination of density by drainage method True density measuring device How to measure precision True Density Measurement relative ct method Relative Quantitative PCR+ relative quantitative pcr method Principle of True Density Meter mobile phase density mobile phase density Calibration of true density meter Absolute Quantification vs. Relative Quantification True Density Measurement Drainage Relative Density True Density Meter True density detector Principle of True Density Determination True Density Meter Function of true density meter pcr relative quantification method The relative density is unqualified Absolute Quantification of Fungi pcr relative quantification method True Density Tester relative density of soil Definition of True Density Determination True Density Meter relative density factor Relative density range Density determination method True Density Detection Method Method precision determination method Method precision determination method True Density Sample Cup Calculation method of true density meter True Density Sample Cup Relative Density Meter True Density Meter Standard Relative Density of Gasoline relative density of coal true density iso pcr relative quantification Relative deviation of two determinations relative quantitative pcr method Determination method of relative crystallinity true density iso relative blackness Verification Regulations for Relative Density Meter relative abundance Density determination method The principle of true density meter Mixture Relative Density Relative Quantitative Detection Method Liquid phase relative quantification Drainage method true density Powder Relative Density Relative Illumination Measurement Method True Density Meter Reference Relative Density Concentration Density determination method Relative density and uses of density coal density Vacuum degree detection method Density relative density instrument The use of true density meter Xiaoting True Density Meter Relative Illumination Measurement Method Densitometer data Density vacuum gauge bulk density and true density Relative Density Survey Method True Density Meter Relative density of glass relative density survey Relative Quantitative Process Mixture Relative Density GBT217 GBT217-1996 GBT217-2008 Definition of True Density How to adjust the relative density density Relative density density method Principle of true density tester Relative vacuum degree and mmHg conversion Relative illumination test method true density international Coal and rock true density measurement Three ways to measure density How to measure density First measure the humidity The truth about coal on density determination methods Relative quantitative calculation method True density detection Test method for true density of coal samples Density determination How to determine relative density and acidity? Helium true density measurement method Method for determining the true density of stone True Density Density Definition true density meter relative density analysis method Symmetry test method Method for isocratic separation of similar peaks Latex relative density test method Comparison of Accuracy of Pharmacopoeia Relative Density Methods Method for measuring relative density of liquids Density-dependent sorting methods Comparison of fungal detection methods The qualifying standard for relative illumination is true density Relative density measurement method density bottle Density measurement gold authenticity method Relative density of earth and rock gb/t217 Opposite method of normalization Common methods and characteristics of relative density determination Coal density detection method Related to filling density measurement relatively gb/t217-1996 Relative quantitative calculation method Determination method of relative density of ethanol Relative density determination method

《GB/T 217-2008煤的真相对密度测定方法》由TC42（全国煤炭标准化技术委员会）归口，TC42SC1（全国煤炭标准化技术委员会煤炭检测分会）执行，主管部门为中国煤炭工业协会。
本标准代替GB/T 217-1996《煤的真相对密度测定方法》。
本标准规定了煤的真相对密度测定的术语和定义、方法提要、试剂和材料、仪器设备、测定步骤、结果计算及精密度。
本标准适用于无烟煤、烟煤和褐煤。
本标准与GB/T 217-1996相比，主要变化为：
―――根据GB/T 1.1-2000《标准化工作导则　第1部分：标准的结构和编写规则》和GB/T 483-2007《煤质分析试验方法一般规定》修改了书写格式，增加了前言、术语和定义、试验报告。
―――修改了密度瓶图中的错误，即由原60mL改为50mL（原版5.4，本版6.3）。

Determination of true relative density of coal

1 Scope

This standard specifies the terms and definitions, method summary, reagents and materials, apparatuses, determination procedures, result calculation and precision for the determination of true relative density of coal.

This standard is applicable to anthracite, bituminous coal and lignite.

2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies.

GB/T 212 Proximate analysis of coal (GB/T 212-2008, ISO 11722:1999, ISO 1171:1997, ISO 562:1998, NEQ)

3 Terms and definitions

For the purpose of this standard, the following terms and definitions apply.

3.1
true relative density of coal
ratio of the mass of coal (excluding pores in coal) to the mass of water of the same volume at 20℃

4 Method summary

Using sodium dodecyl sulfate solution as wetting agent, the coal sample is wetted and settled in a density bottle, and the adsorbed gas is removed. The true relative density of coal is calculated according to the mass of water of the same volume discharged from the coal sample.

5 Reagents and materials

Sodium dodecyl sulfate solution: chemically pure, 20g/L. Weigh 20g of sodium dodecyl sulfate, dissolve it in water, and then dilute the solution to 1L with water.

Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 Method summary
5 Reagents and materials
6 Apparatuses
7 Determination procedures
8 Result calculation
9 Method precision
10 Test report

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