Determination of Thermal Stability of Coal
This standard specifies the principle, apparatus, sample, procedures, expression of results, precision and test report for the determination of thermal stability of coal.
This standard is applicable to lignite, anthracite and non-cohesive 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/T 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.
3.1
thermal stability
a measure of the ability of coal to maintain a specified particle size when heated
The thermal stability index (TS+6) is taken as the mass fraction of residual coke mass of particle size larger than 6mm in the sum of residual coke mass of each particle size class after heating of coal sample with certain particle size under specified conditions. The mass fraction of the residual coke mass of 3mm to 6mm and less than 3mm in the sum of the residual coke mass of each particle size was taken as the auxiliary thermal stability index (TS3~6, TS-3).
Note: GB/T 483-2007, definition 3.3.22, modified.
4 Principle
Foreword II
2 Normative References
3 Terms and Definitions
4 Principle
5 Apparatus
6 Sample
7 Procedure
8 Expression of Results
9 Precision
10 Test Report
Determination of Thermal Stability of Coal
This standard specifies the principle, apparatus, sample, procedures, expression of results, precision and test report for the determination of thermal stability of coal.
This standard is applicable to lignite, anthracite and non-cohesive 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/T 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.
3.1
thermal stability
a measure of the ability of coal to maintain a specified particle size when heated
The thermal stability index (TS+6) is taken as the mass fraction of residual coke mass of particle size larger than 6mm in the sum of residual coke mass of each particle size class after heating of coal sample with certain particle size under specified conditions. The mass fraction of the residual coke mass of 3mm to 6mm and less than 3mm in the sum of the residual coke mass of each particle size was taken as the auxiliary thermal stability index (TS3~6, TS-3).
Note: GB/T 483-2007, definition 3.3.22, modified.
4 Principle
Contents of GB/T 1573-2018
Foreword II
2 Normative References
3 Terms and Definitions
4 Principle
5 Apparatus
6 Sample
7 Procedure
8 Expression of Results
9 Precision
10 Test Report
