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What is smoke and dust?
smoke contains a few gases and fine dust particles and is often harmfull for living beings\
What is fine rocky particle as small as a speck of dust is?
Volcanic ash
Which could be part of the pyroclastic materials of a volcanic eruption?
Fine ash and dust
Is there dust in snow?
yes dust is everywhere tiny particles of it cling to everything even when it semms clean
Is aluminum a combustable material?
Perhaps amazingly, the answer is "Yes". Of course, when ground finely enough, almost ANY material is combustible; that's why there are grain silo explosions every summer, when wheat dust or corn dust, suspended in the air, reaches a critical proportion with air and then it will explode with the slightest spark. Aluminum dust is commonly used in pyrotechnics.
Is silver combustible?
Silver is a non-combustible solid (except as dust)
Is tungsten combustible?
It is not combustible like some materials, but it can catch afire which is why many shops have separate shop vacs for titanium dust/chips.
Can there be an explosion caused by dust?
If the dust comes from a flammable/combustible material - sure. But you'd still need a flame or a spark to set it off.
What are the differences between combustible and non combustible dust?
Combustible Dusts have a KST value of Greater Than Zero, and can cause a Week to Very Strong Explosion... (Powdered Milk, Sugar, Coal, Wood, Plastic, Food/organic, Aluminum, Zirconium). Non-Combustible Dust, have a KST Value of Zero, and Don't cause an Explosion: Non-Combustible Dusts: Aggregates, such as stone, silica(sand), Silicates, Sulfates, Nitrates, Carbonates, Phosphates, Portland cement, Sand, Limestone.
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.
Is iron a combustible substance?
i think it is not a combustible substance because it doesn't produce heat. ******************************************* No, examples of combustible substances are wood, paper, petrol, flour dust, etc. Iron will never burst into flames, though it will melt into a liquid if heated enough.
Is iron nail a combustible substance?
i think it is not a combustible substance because it doesn't produce heat. ******************************************* No, examples of combustible substances are wood, paper, petrol, flour dust, etc. Iron will never burst into flames, though it will melt into a liquid if heated enough.
What is dust and soot?
Dust is very fine particles of soil or ash and soot is very fine particles of carbon.
Cloud of dust that becomes a star?
Nebula
What is pulverising?
It means to reduce to fine dust, to crumble away to dust, to destroy or crush.
What is the answer to the analogy water is to wet as dust is to what?
The answer to the analogy "water is to wet as dust is to what" would be dry. Water becomes wet when it comes in contact with it, similarly, dust becomes dry when it is not wet or has not come in contact with water.
Do you need an explosion proof motor for a grain elevator?
It depends on where in the grain elevator the motor is located and if dust is allowed to build up on the surface of the motor restricting its heat dissipation. Grain dust is highly explosive if the air dust ratio is correct. If the motor is outside or adjacent to an area where there is no dust then an ordinary totally enclosed motor can be used. Grain elevators fall under the classification of Class 2, Division 1, Groups E, F and G. Group designations for Class 2 areas refer to the type of dust involved. Group E dusts contain combustible metal dusts like coal and some other combustible dusts. Group G dusts are the combustible dusts not found in groups E or F.
