when coal is pulvorised(powder ) the surface area will be more so it cathes fire early than lumps.
small pieces of coal are called slack. Thank you!
The fine coal dust is much more combustible than large lumps of coal. Large lumps of coal takes time for the flames to begin burning it efficiently - so heat takes longer to build up in the furnace.
Powdering the coal vastly increases the surface area. As a result, the coal burns more evenly, predictably, and cleanly, with fewer off-gases and less waste.
The coal dust burns more quickly because it has a greater surface area to be exposed to the flames of the fire, therefore it burns quicker than the lump of coal.
when coal is pulvorised(powder ) the surface area will be more so it cathes fire early than lumps.
Beautiful Lumps of Coal was created on 2003-03-25.
small pieces of coal are called slack. Thank you!
metoreorite
fireball
The small lumps of rocks orbiting around the sun are called nuggets. These nuggets could either be asteroids or meteors.
Lumps of Coal
Traditionally - lumps of coal.
Lumps of Coal
hail,but if they are small pebbles that is called sleet.
Lumps of coal can be purchased at science shops, such as the ones where you would buy science kits for children. Also, if you have a year-round Christmas store, they often have lumps of coal as gag gifts.
Small lumps on the scalp are likely caused by bug bites. Spiders and mosquitoes can cause a series of small lumps on the scalp.