One Question per Day (January 17, 2018)
Thread Content
It is a type of coal that must be either lignite or bituminous coal; its dry ash-free basis volatile matter content (Vdaf) is 39%, and its light transmittance P% is 55%. What type of coal is it? Could you briefly explain why? Long-flame coal. Because those with PM% > 50% cannot be lignite
Long-flame coal: lignite with Vdaf > 37% and transmittance ≤ 50%; long-flame coal with Vdaf > 37% and transmittance > 50%
It is a type of coal that must be either lignite or bituminous coal; its dry ash-free basis volatile matter content (Vdaf) is 39%, and its light transmittance P% is 55%. What type of coal is it? Could you briefly explain why? Answer: Long-flame coal. Because those with PM% > 50% cannot be lignite
Long-flame coal. Because those with PM% > 50% cannot be lignite
Lignite: The main characteristic of lignite is its high moisture content
It should be long-flame coal. Since the ash-free basis volatile matter content (Vdaf) of long-flame coal is greater than 37%, and its light transmittance P% is greater than 50%, it must be long-flame coal.
Answer: Long-flame coal. Because those with PM% > 50% cannot be lignite
Lignite with a PM% of >50% cannot be lignite
Long-flame coal. Because those with PM% > 50% cannot be lignite