GB/T 35986-2018Determination of ignition loss in coal gangue (English PDF)
煤矸石烧失量的测定
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
February 6, 2018
Implementation date
September 1, 2018
Scope
GB/T 35986-2018 is the English-translated version of 煤矸石烧失量的测定.
GB/T 35986-2018 is the Chinese national method for determining the loss on ignition of coal gangue. A sample dried at 105°C ± 5°C is burned to constant weight at 800°C ± 10°C, and the loss on ignition is calculated from the loss of mass.
The standard lists the apparatus, including porcelain crucibles, a forced air drying oven, a muffle furnace with a sufficient constant temperature zone, an analytical balance reading to 0.1 mg and a desiccator, and describes the analytical procedure, the calculation of results and the precision of the method.
It is used together with the general testing rules for gangue in GB/T 33687. It was issued on 6 February 2018 and has applied since 1 September 2018.
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Document preview — GB/T 35986-2018
National Standard of the People's Republic of China
- ICS
- 27.010
- Classification
- F 10
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword3
- 1 Scope4
- 2 Normative references4
- 3 Method summary4
- 4 Apparatus4
- 5 Analytical procedures5
- 6 Calculation of analytical procedures5
- 7 Method precision6
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
1 Scope
This Standard specifies the method summary, apparatus, analytical procedures, calculation of analytical results and method precision for the determination of ignition loss in coal gangue.
This Standard applies to the determination of ignition loss in coal gangue.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition dated applies to this document. For undated references, the latest edition of the referenced documents (including all amendments) applies to this document.
GB/T 33687, General testing rules for gangue
3 Method summary
Coal gangue sample, which is dried at 105°C ± 5°C, is burned to a constant weight at 800°C ± 10°C; and the loss on ignition is calculated based on the loss of mass.
4 Apparatus
4.1 Porcelain crucibles. 10 mL.
4.2 Forced air drying oven. equipped with an automatic temperature control device which maintains the temperature within the range of 105°C ± 5°C.
4.3 Muffle furnace. the hearth has a sufficient constant zone which maintains the temperature at 800°C ± 10°C.
4.4 Analytical balance. with a scale division of 0.1 mg.
4.5 Desiccator. containing desiccant.
4.6 Heat resistant porcelain plates or asbestos plates. […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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