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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.
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∙ 12y ago
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How is coal dangerous?
If you chuck it at people... If you burn it... If you inhale coal dust... Lots of ways :)
Why is coal broken and grounded into powder before it is blown into the boiler blast furnice?
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.
Why do coal mines explode?
Coal dust in the air is an explosive mixture, because the mixture of coal and air can burn much more rapidly than solid pieces of coal can (flour in the air is also explosive, or sawdust - any flammable substance in the form of dust becomes explosive if it is mixed into the air). The process of mining coal is messy, and creates a lot of dust. And any spark can set it off. No smoking in the coal mines!
What are the dangers of coal dust?
The dangers of coal dust are inhaling the dust which goes into your lungs and skin irritation from dust. Coal dust is harmful for the most part and has no health benefits.
What is the name of coal dust?
Particulate coal
When the south's supply of coal was gone people formed hard lumps of coal dust sawdust sand and wet clay to burn for heat what were they called?
fireball
What element in the air is needed for coal dust to burn?
Oxygen.
How is coal dangerous?
If you chuck it at people... If you burn it... If you inhale coal dust... Lots of ways :)
Why is coal broken and grounded into powder before it is blown into the boiler blast furnice?
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.
Why do coal mines explode?
Coal dust in the air is an explosive mixture, because the mixture of coal and air can burn much more rapidly than solid pieces of coal can (flour in the air is also explosive, or sawdust - any flammable substance in the form of dust becomes explosive if it is mixed into the air). The process of mining coal is messy, and creates a lot of dust. And any spark can set it off. No smoking in the coal mines!
What are the dangers of coal dust?
The dangers of coal dust are inhaling the dust which goes into your lungs and skin irritation from dust. Coal dust is harmful for the most part and has no health benefits.
Another word for coal dust?
Soot is another word for coal dust.
What is the name of coal dust?
Particulate coal
Why it is more difficult to burn some combustible substances than others?
There are many variables which affect the ease of combustion. The degree of mixing with the air is a very large factor. Powdered coal dust in air will ignite explosively, while lumps of coal are much harder to ignite. Different compounds have different activation energies for combustion and there require different temperatures to ignite. Sometimes combustible materials are mixed with non-combustible materials which also makes them harder to burn; for example, dry paper burns quite well, but wet paper is very difficult to burn.
Where is coal dust found?
Coal mines, coal bins, coal hods, and anywhere coal is or was.
What is black lung disease known as?
Coal workers pneumoconiosis (CWP), is caused by inhaling coal dust.
Why is coal dust build out of coal mining in the enclosed area dangerous?
any concentration of dust is potentially explosive
