GB/T 35986-2018 English PDF (GBT35986-2018)

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GB/T 35986-2018: Determination of ignition loss in coal gangue
GB/T 35986-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.010
F 10
Determination of ignition loss in coal gangue
ISSUED ON. FEBRUARY 6, 2018
IMPLEMENTED ON. SEPTEMBER 1, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Method summary ... 4
4 Apparatus ... 4
5 Analytical procedures ... 5
6 Calculation of analytical procedures ... 5
7 Method precision ... 6
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard was proposed by China National Coal Association.
This Standard shall be under the jurisdiction of National Technical Committee 42 on
Coal of Standardization Administration of China (SAC/TC 42).
The drafting organizations of this Standard. Chongqing Institute of Geological Mineral
Resources, Xinjiang Uygur Autonomous Region Institute for Testing and Research of
Coal and Coal Bed Methane.
The main drafters of this Standard. Zhu Zhenzhong, Hu Feng, Zhao Xuedao, Wang
Chunlian, Lu Xiaohai.
Determination of ignition loss in coal gangue
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.