GB/T 7702.4-1997Standard test method for granular activated carbon from coal - Determination of apparent density (English PDF)

Foreword

This Standard is a revised edition of GB 7702.4-87 according to American Society for

Testing Material standard ASTM D 2854-89 (certified in 1993) "Standard Test Method for

Apparent Density of Activated Carbon". It adopts equivalent standard content of ASTM D

2854-89 (certified in 1993) on main technical content. Determination of apparent density is

changed from manual tapping in GB 7702.4-87 to electric vibration falling in this Standard.

After issued and implemented, this Standard supports the use of national standard GB/T

7701.1-1997 ~ 7701.7-1997 "Granular Activated Carbon from Coal".

This Standard replaces GB 7702.4-87, from the effective date. Implementation transitional

period of this Standard is one year.

This Standard was proposed by China North Industries Corporation.

This Standard shall be under the jurisdiction of the Institute of China Ordnance Industrial

Standardization.

Drafting organization of this Standard. Shanxi Xinhua Chemical Plant.

Main drafters of this Standard. Wang Yueyi, Zhang Xu, Zhang Chongjie, Wang Jianguang,

Zhang Lirong, and Yuan Zhi.

This Standard was issued in April, 1987 for the first time.

This Standard is entrusted to Shanxi Xinhua Chemical Plant for interpretation.

National Standard of the People's Republic of China

Standard Test method for Granular

Activated Carbon from Coal

— Determination of Apparent Density

Replacing GB 7702.4-87

1 Scope

This Standard specifies the contents such as instruments, determination procedures,

processing of determination results that are required for the determination of apparent

density of granular activated carbon from coal.

This Standard applies to the determination of apparent density of granular activated

carbon from coal (hereinafter referred to as activated carbon).

2 Normative references

The following standards contain provisions which, through reference in this text, constitute

provisions of this Standard. At the time of publication, the editions indicated were valid. All

standards are subject to revision, and parties who enter into agreement based on this

Standard are encouraged to investigate the possibility of applying the most recent editions

of the standards indicated below.

GB/T 7702.1 Standard Test Method for Granular Activated Carbon from Coal -

Determination of Moisture Content

3 Summary of method

Activated carbon falls into a measuring cylinder through vibration. Weigh the mass of 100

mL of activated carbon. Calculate the apparent density.

4 Instruments and devices