Anthracite AO (25-50 mm)
Coal anthracite grade AO or as it is also called "anthracite nut" is one of the most popular among anthracites. The size or fraction of the AO variety is 25-50 mm. This anthracite got its name "walnut" because of its similarity in size to an ordinary walnut. Anthracite coal JSC is in great demand among the population and is used for heating private homes.
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Technical specification: Coal grade Anthracite AO (25-50 mm)
1. Particle sizes:
- Size range: 25-50 mm.
- The particle size distribution should correspond to the following values:
- The proportion of particles with a size of 25-35 mm: at least 80%
- The proportion of particles with a size of 35-50 mm: no more than 20%
2. Physical properties:
- Density: not less than 1.4 g/cm3.
- Compressive strength: at least 8 MPa.
- Humidity: no more than 3%.
- Porosity: at least 45%.
3. Chemical composition:
- Ash content: no more than 4%.
- Sulfur content: not more than 0.5%.
- Volatile matter content: no more than 5%.
4. Thermal properties:
- Heat of combustion: at least 28 MJ/kg.
- Softening temperature: at least 1500°C.
5. Certification:
- The products are certified in accordance with local and international coal quality standards.
Note: This specification is provided as an example and can be adapted to meet specific customer requirements or quality standards.
1. Particle sizes:
- Size range: 25-50 mm.
- The particle size distribution should correspond to the following values:
- The proportion of particles with a size of 25-35 mm: at least 80%
- The proportion of particles with a size of 35-50 mm: no more than 20%
2. Physical properties:
- Density: not less than 1.4 g/cm3.
- Compressive strength: at least 8 MPa.
- Humidity: no more than 3%.
- Porosity: at least 45%.
3. Chemical composition:
- Ash content: no more than 4%.
- Sulfur content: not more than 0.5%.
- Volatile matter content: no more than 5%.
4. Thermal properties:
- Heat of combustion: at least 28 MJ/kg.
- Softening temperature: at least 1500°C.
5. Certification:
- The products are certified in accordance with local and international coal quality standards.
Note: This specification is provided as an example and can be adapted to meet specific customer requirements or quality standards.