GB/T 7702.17-1997 English PDF (GBT7702.17-1997)

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GB/T 7702.17-1997: Standard test method for granular activated carbon from coal - Determination of floatation ratio
GB/T 7702.17-1997
GB
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Standard Test Method for Granular
Activated Carbon from Coal –
Determination of Floatation Ratio
ISSUED ON. DECEMBER 03, 1997
IMPLEMENTED ON. JUNE 01, 1998
Issued by. State Bureau of Technical Supervision
Table of Contents
Foreword ... 3 
1  Scope ... 4 
2  Normative References ... 4 
3  Method Abstract ... 4 
4  Instruments ... 4 
5  Specimen and Preparation ... 5 
6  Determination Steps ... 5 
7  Processing of Determination Result ... 5 
8  Test Report ... 5 
Foreword 
This Standard is a new test method standard based on the requirements of national
standard "Granular Activated Carbon from Coal”.
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”.
From the effective date of this Standard, the implementation transitional period 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. Wei Guifen, Zhang Guohong, Zhang Zhongjie, Zhao Jijun,
and Luo Shiyan.
This Standard is entrusted to Shanxi Xinhua Chemical Plant for interpretation.
Standard Test Method for Granular Activated Carbon from
Coal – Determination of Floatation Ratio
1  Scope 
This Standard specifies the content such as required instruments, steps and result
calculation for the determination of floatation rate of granular activated carbon from coal.
This Standard applies to the determination of floatation rate of granular activated carbon
from coal (hereinafter referred to as the 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  Method Abstract 
Dry the sample. Place it into a container that contains quantitative amount of water for
immersion. After stirring and standing, take out the sample floating on the water surface;
dry it to constant weight; calculate the floatation ratio.
4  Instruments 
4.1 Balance. sensitivity is 0.0001 g.
4.2 Beaker. 500 mL.
4.3 Measuring cylinder. 100 mL.
4.4 Electrothermal constant-temperature drying oven. 0~300°C.
4.5 Stopwatch.
4.6 Horn spoon or stainless steel spoon.
4.7 Stainless steel spoon with mesh.