Dust explosion means that when dust is within the explosion limit, it encounters a heat source (open flame or temperature). The flame spreads rapidly in the mixed dust space, and the burning speed is very fast. And heat radiation, the destructive power is very large. Professional explosion-proof vacuum cleaner is required.

Professional Explosion-proof vacuum cleaner, there are usually three types of dust explosion conditions

Flammable dust is suspended in the air at an appropriate concentration to form a dust cloud.

All solid materials are in a fine powder state, which is dust. Combustible and explosive dust is called combustible dust, dust floating in the air is called floating dust, and dust floating on solid walls is called deposited dust.

Metal (such as magnesium powder, aluminum powder); coal; grain (such as wheat, starch); feed (such as blood meal, fish meal); agricultural by-products (such as cotton, tobacco); forest products (such as paper powder, wood flour); synthetic materials (Such as plastics, dyes).

Under certain conditions, some factories, especially the dust produced during the processing of some organic substances, will explode and burn.

Adequate supply of air and oxidant; fire source or severe vibration and friction. The danger of dust violence.

Professional Explosion-proof dust collector. First, dust explosions are very destructive. Dust explosions cover a wide range of fields, and they often occur in coal, chemical, pharmaceutical, wood, food, and feed industries.

Second, it is prone to a second explosion. First, the explosive airflow blows up the dust deposited on the equipment or the ground. A short time after the explosion, a negative pressure is formed in the center of the explosion, and the surrounding fresh air is filled from the outside to the inside, forming the so-called return air, which is mixed with the raised dust. The flames of the second explosion caused a second explosion after being ignited. The dust concentration is generally much higher in the second explosion than in the first explosion, so the power of the second explosion is much greater than the first explosion. For example, an explosion in a sulphur powder plant occurred inside the coal mill. The explosion wave spreads from the coal mill to the cyclone jet along the gas pipeline. A second explosion occurred in the cyclone jet, and the explosion wave passed through the cyclone jet. The internal cracks spread to the scene, and sulfur dust was raised on the coal mill, which exploded again.

In addition, dust explosions can produce toxic gases. One is carbon monoxide, and the other is a toxic gas. Explosives such as plastic will decompose by itself. The toxic gas produced after the explosion often causes human and animal poisoning and casualties, which must be paid attention to. 

If you want buy fume extractor, please contact with Dongguan Pure-Air Tech Co.,ltd, E-mail: sales@pure-airtech.com.