GB/T 7702.17-1997Standard test method for granularactivated carbon from coal--Determination of floatation ratio (English PDF)

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.

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. […]