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The coal dusts have large surface area thus it can easily absorb the heat and reach its ignition temperature and thus can burn easily... Remember a wood fillings can be easily burned in seconds but a wood block cannot be burnt easily as it takes time to transfer heat to all its body and thus reach the ignition temperature...
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Coal dust burns faster than a single lump of coal?
Yes, coal dust burns faster than a single lump of coal because it has more surface area exposed to oxygen, allowing for quicker combustion. This increased surface area allows for more efficient burning and a faster release of energy.
Why is coal constantly sprayed with water?
Coal is sprayed with water to suppress dust and reduce the risk of fires or explosions. Coal dust can be highly flammable and can ignite easily, posing a safety hazard in coal mines, power plants, and transportation. By spraying water on coal, the dust particles are weighed down and kept moist, minimizing the risk of combustion.
What are some dangers in mining coal?
Dangers can include fire/explosion, cave-ins of underground mines, flooding, inhaled rock and coal dust, noise from mining equipment, electric injuries (most underground equipment is electrically driven, and having a chunk of the rock ceiling fall on you. Being struck by equipment is a hazard, and when working narrow seam coal, developing "Miner's knee" for working on your knees- not enough room to stand up. I inspect coal mines, and these are some of the areas I look for.
Can coal go on fire?
Yes, coal can catch fire and burn because it is a combustible material. When exposed to high enough temperatures, coal can undergo combustion and release heat energy. However, coal fires can be dangerous and difficult to extinguish, making them a significant environmental hazard.
Why does coal dust burn quicker than lumps of coal?
Coal dust has a larger surface area compared to lumps of coal, allowing for quicker combustion due to increased exposure to oxygen. The smaller particles in coal dust also ignite more easily, leading to faster burning. Additionally, coal dust has lower density and requires less heat to ignite compared to lumps of coal.
What is a serious hazard of coal mining?
Fire and explosion. Coal mines contain methane gas, which is very flammable. There are also health hazards from breathing coal dust.
What has the author I Liebman written?
I. Liebman has written: 'Suppression of coal dust explosion by water barrier in a conveyor belt entry' -- subject(s): Belt conveyors, Coal mines and mining, Dust control, Fires and fire prevention, Mine explosions
Coal dust burns faster than a single lump of coal?
Yes, coal dust burns faster than a single lump of coal because it has more surface area exposed to oxygen, allowing for quicker combustion. This increased surface area allows for more efficient burning and a faster release of energy.
Why is coal constantly sprayed with water?
Coal is sprayed with water to suppress dust and reduce the risk of fires or explosions. Coal dust can be highly flammable and can ignite easily, posing a safety hazard in coal mines, power plants, and transportation. By spraying water on coal, the dust particles are weighed down and kept moist, minimizing the risk of combustion.
What are some dangers in mining coal?
Dangers can include fire/explosion, cave-ins of underground mines, flooding, inhaled rock and coal dust, noise from mining equipment, electric injuries (most underground equipment is electrically driven, and having a chunk of the rock ceiling fall on you. Being struck by equipment is a hazard, and when working narrow seam coal, developing "Miner's knee" for working on your knees- not enough room to stand up. I inspect coal mines, and these are some of the areas I look for.
Can coal go on fire?
Yes, coal can catch fire and burn because it is a combustible material. When exposed to high enough temperatures, coal can undergo combustion and release heat energy. However, coal fires can be dangerous and difficult to extinguish, making them a significant environmental hazard.
Why a miner is never permitted to smoke inside a coal mine?
Fire and explosion are MAJOR safety hazards. Coal, and coal dust, is readily ignitable, and most coal mines have some level of methane gas. This is explosive when mixed with air. Smoking, and carrying a "source of ignition" such as a lighter, matches, or even a regular flashlight violates US safety regulations.
Why does coal dust burn quicker than lumps of coal?
Coal dust has a larger surface area compared to lumps of coal, allowing for quicker combustion due to increased exposure to oxygen. The smaller particles in coal dust also ignite more easily, leading to faster burning. Additionally, coal dust has lower density and requires less heat to ignite compared to lumps of coal.
What is the name of coal dust?
In a coal mine coal dust , mixed with oxygen and methane is known as 'fire damp'. Any flame or electric arc will ignite a flash explosion. Miners often breed canaries (finch type birds), and occasionally take then down the mine. This is because the bird is very susceptible to poisonous gases and fire damp. It is likely to fall off its perch if poisonous gases are present, whereupon the bird is quickly removed to cleaner air , where it recovers. Coal dust , coal particles are best kept under control by the use of a fine spray / mist. of water.
What were the sorts of incidents that happened in coal mines?
The greatest dangers were fire/explosion, and collapse of the areas being mined. Coal dust is highly flammable, and most coal deposits have methnae gas (VERY flammable). Collapse could result in being trapped in the mine, or hit by rocks. Accidents have also happened when working with explosives, operating power machinery, and electrical wiring.
Do HP Computers Catch On Fire?
Any computer can catch on fire if not properly maintained. Dust can build up inside a computer, which traps heat generated, which can then cause a fire to ignite. I reccomend buying canned air, opening the side panel of the computer, and blowing out all the dust you see about once a month. The computer will last a lot longer, will have fewer problems, and dust will not be able to build up enough to be in danger of causing a fire.
What causes a comets to have a tail?
The dust and rocks that come off the comet often catch on fire and leave a trail.
