Determination of plastometric indices of bituminous coal English
1 Scope
This standard specifies the terms and definitions, method summary, reagents and materials, instruments and equipment, coal samples, test preparation, test steps, result expression, method precision and test report for determination of plastometric indices of bituminous coal.
This standard is applicable to bituminous coal.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 474 Preparation of coal sample
GB/T 483 General rules for analytical and testing methods of coal
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 483 and the following apply. For the convenience of application, some terms and definitions in GB 483 are listed repeatedly as follows.
3.1
plastometric indices
index proposed by Sapozhnikov to characterize the plastic property of bituminous coal, expressed by the maximum thickness of plastic layer, Y, and the final contraction value, X.
[GB/T 483-2007, Definition 3.3.5]
3.2
maximum thickness of plastic layer
Y
maximum distance between the level curves drawn according to the points on the upper and lower levels of the plastic mass determined in the determination of plastometric indices of bituminous coal
Note: It is revised from Definition 3.3.6 in GB/T 483-2007.
3.3
volume curve of plastic layer
curve as a function of temperature of the position on the upper level of plastic mass recorded in determination of plastometric indices of bituminous coal
[GB/T 483-2007, Definition 3.3.7]
3.4
final contraction value; plastometric shrinkage
X
distance between the end point of volume curve and the zero point line when the temperature is 730℃ in the determination of plastometric indices of bituminous coal
[GB/T 483-2007, Definition 3.3.8]
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Method summary
5 Reagents and materials
6 Instruments and equipment
7 Coal samples
8 Test preparation
9 Test steps
10 Result expression
11 Method precision
12 Test report
Annex A (Informative) Method for cutting asbestos round pads
Annex B (Informative) Method for checking pressure on cross section of coal sample
Annex C (Informative) Coke-pushing device
Annex D (Informative) Method for cleaning coal cup
Annex E (Normative) Distinguishing of technical characteristics of coke blocks
Annex F (Informative) Plastometric indices test record table
Standard
GB/T 479-2016 Determination of plastometric indices of bituminous coal (English Version)
Standard No.
GB/T 479-2016
Status
valid
Language
English
File Format
PDF
Word Count
10500 words
Price(USD)
140.0
Implemented on
2017-7-1
Delivery
via email in 1 business day
Detail of GB/T 479-2016
Standard No.
GB/T 479-2016
English Name
Determination of plastometric indices of bituminous coal
Determination of plastometric indices of bituminous coal English
1 Scope
This standard specifies the terms and definitions, method summary, reagents and materials, instruments and equipment, coal samples, test preparation, test steps, result expression, method precision and test report for determination of plastometric indices of bituminous coal.
This standard is applicable to bituminous coal.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 474 Preparation of coal sample
GB/T 483 General rules for analytical and testing methods of coal
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 483 and the following apply. For the convenience of application, some terms and definitions in GB 483 are listed repeatedly as follows.
3.1
plastometric indices
index proposed by Sapozhnikov to characterize the plastic property of bituminous coal, expressed by the maximum thickness of plastic layer, Y, and the final contraction value, X.
[GB/T 483-2007, Definition 3.3.5]
3.2
maximum thickness of plastic layer
Y
maximum distance between the level curves drawn according to the points on the upper and lower levels of the plastic mass determined in the determination of plastometric indices of bituminous coal
Note: It is revised from Definition 3.3.6 in GB/T 483-2007.
3.3
volume curve of plastic layer
curve as a function of temperature of the position on the upper level of plastic mass recorded in determination of plastometric indices of bituminous coal
[GB/T 483-2007, Definition 3.3.7]
3.4
final contraction value; plastometric shrinkage
X
distance between the end point of volume curve and the zero point line when the temperature is 730℃ in the determination of plastometric indices of bituminous coal
[GB/T 483-2007, Definition 3.3.8]
Contents of GB/T 479-2016
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Method summary
5 Reagents and materials
6 Instruments and equipment
7 Coal samples
8 Test preparation
9 Test steps
10 Result expression
11 Method precision
12 Test report
Annex A (Informative) Method for cutting asbestos round pads
Annex B (Informative) Method for checking pressure on cross section of coal sample
Annex C (Informative) Coke-pushing device
Annex D (Informative) Method for cleaning coal cup
Annex E (Normative) Distinguishing of technical characteristics of coke blocks
Annex F (Informative) Plastometric indices test record table