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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.
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∙ 13y ago
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What burn quickly powered coal small pieces of coal or lumps of coal?
when coal is pulvorised(powder ) the surface area will be more so it cathes fire early than lumps.
Why does coal dust burn quicker than lumps of coal?
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.
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.
Give one advantage of coal rather than biomass as a fuel?
we are warmer with coal as we can use it as something to light our fire
Why must coal be heated in the absence of air to change into coke?
Because the oxygen in the air would cause it to combust rather than turn into coke (+coal gas).
Why powdered flour reacts more quickly than lumps of wheats?
Powdered flour reacts more quickly than lumps of wheat because it has more surface area to absorb liquid.
What burn quickly powered coal small pieces of coal or lumps of coal?
when coal is pulvorised(powder ) the surface area will be more so it cathes fire early than lumps.
Why does coal dust burn quicker than lumps of coal?
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.
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 would you use wind rather than coal as an energy source?
because coal pollutes and we have unlimited wind
Give one advantage of coal rather than biomass as a fuel?
we are warmer with coal as we can use it as something to light our fire
Give one advantage of using wind rather than coal as an energy resource?
Wind is renewable and coal is non-renewable . =P
Why is the rate of reaction increased when magnesium is powdered rather than in solid form?
Because more surface area is exposed.
Why do you keep getting lumps on your face after you shave?
You need to use a clean sharp razor with a moisturising gel then finish with a moisturiser rather than after-shave.
Why must coal be heated in the absence of air to change into coke?
Because the oxygen in the air would cause it to combust rather than turn into coke (+coal gas).
Why wouldn't coal and coral be considered minerals?
Because they are of biological origin, rather than something upthrust by geologic processes.
Can you use gun powder instead of powdered sugar and kno3 as a propellant?
Gun powder can be used as a propellant rather than powdered sugar and KNO3 depending on the application. Both are explosive, however gun powder is designed to ignite at much higher speeds.
