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GB/T 8727-2008 (GBT 8727-2008)

GB/T 8727-2008_English: PDF (GBT8727-2008)
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GB/T 8727-2008English149 Add to Cart 3 days Method for determination of coking value of coal pitch products GB/T 8727-2008 Valid GB/T 8727-2008

BASIC DATA
Standard ID GB/T 8727-2008 (GB/T8727-2008)
Description (Translated English) Method for determination of coking value of coal pitch products
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G18
Classification of International Standard 71.080
Word Count Estimation 7,748
Date of Issue 2008-08-19
Date of Implementation 2009-04-01
Older Standard (superseded by this standard) GB/T 8727-1988
Quoted Standard GB/T 2000; GB/T 6003.1
Drafting Organization Shuicheng Iron and Steel (Group) Co., Ltd.
Administrative Organization National Steel Standardization Technical Committee
Regulation (derived from) National Standard Approval Announcement 2008 No.14 (Total No.127)
Proposing organization China Iron and Steel Association
Issuing agency(ies) Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China
Summary This standard specifies the principles of coking coal tar products value measurement method, results calculated, , instruments and materials, , test procedures and preparation of samples, such as precision. This standard applies to the processing of the obtained coal tar coal tar, determination of modified bitumen coking values.

GB/T 8727-2008
Method for determination of coking value of coal pitch products
ICS 71.080
G18
National Standards of People's Republic of China
Replacing GB/T 8727-1988
Determination of coal tar products of coking value
Posted 2008-08-19
2009-04-01 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 8727-1988 "Determination of coking value of coal tar."
This standard and GB/T 8727-1988 compared to the main changes are as follows.
--- Modify the "scope";
--- Added "normative references";
--- Improve the "Test Procedure."
The standard proposed by China Iron and Steel Association.
This standard is under the jurisdiction of the National Steel Standardization Technical Committee.
This standard was drafted. Shuicheng Iron and Steel (Group) Co., Ltd., Metallurgical Industry Information Standards Institute.
The main drafters of this standard. Yang Mao-lin, WU Wei Guo, Sun Wei, Zhang Dongsheng, Qiu Shengyu, Chen Haiying, by groups of red, Geng Qian.
This standard replaces the standards previously issued as follows.
--- GB/T 8727-1988.
Determination of coal tar products of coking value
1 Scope
This standard specifies the principles of the coal tar products of coking value measurement method and preparation, equipment and materials, test procedure, the specimen knot
If calculated, precision and the like.
This standard applies to coal tar processing of the obtained coal tar pitch, modified pitch coking measured values.
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 2000 coking products solid sampling methods
GB/T 6003.1 woven wire mesh screen test
3 PRINCIPLE OF THE METHOD
A certain amount of the sample into the 550 ℃ ± 10 ℃ temperature heating furnace, and then weighed cinder, cinder amount of content that is the amount of sample
A coking value.
4 samples and preparation
According to the provisions of GB/T 2000 to take samples, grinding with a mortar drying (50 ℃ ± 2 ℃ in blast oven drying 1h) by post to
GB/T 6003.1 in 200 × 50-0.25/0.16 sieve.
5 Apparatus and materials
5.1 porcelain crucible. the volume of 20mL, the inner diameter 35mm, high 30mm, with cover.
Volume of 100mL, the inner diameter 58mm, high 50mm, with cover.
5.2 box-shaped high-temperature furnace. can control 550 ℃ ± 10 ℃.
5.3 dryer. built-in desiccant.
5.4 Crucible frame. nickel-chromium Sijia made, the size of the hole a crucible holder press into a crucible from the bottom of the crucible bottom 5mm prevail.
5.5 Balance. a sense of the amount of 0.0001g.
5.6 Coke. particle size of 1mm ~ 3mm.
5.7 mortar material. agate or porcelain.
6 Test procedure
6.1 Weigh the sample 1g (accurate to 0.0002g), placed in a clean good 20mL constant weight porcelain crucible flattening at 550 ℃ ± 10 ℃,
Close the lid.
6.2 The sample is loaded into the crucible in advance Fitted with 10mm ± 1mm thick coke 100mL of crucible coke and then the two crucibles
To fill the gap between 20mL crucible was completely buried, covered with a lid outside the crucible.
6.3 packed crucible on nickel-chromium wire bracket, and then put the whole temperature box furnace temperature of 550 ℃ ± 10 ℃, 10min within
Return to a constant temperature.