Furry factories must put up warning signs saying "Strictly no fireworks". Analyze the reasons.

First of all, I can tell you clearly that flour can cause explosions. I can also tell you that not only flour, but also substances that leave a sweet impression such as sugar can explode. In the history of industry, explosion accidents are not uncommon in flour mills and food factories that use sugar and flour as raw materials.

So, what is the reason for the explosion of flour and sugar?

There are many reasons. First of all, both flour and sugar contain elements such as carbon and hydrogen, which are substances that can burn. However, although flour and sugar are both combustible, we know from daily life practice that they will never burn like black gunpowder. An important condition for their explosion is that the dust particles are particularly fine.

During the production process of those factories, a large amount of extremely fine dust of flour and sugar was produced, and this dust was flying everywhere. When these dusts are suspended in the air and reach a very high concentration, such as when there are 9.7g of flour or 9g of sugar per cubic meter of air, they will burn instantly once they encounter flames, sparks, arcs or appropriate temperatures, forming A violent explosion, as powerful as a bomb.

The reason why dust becomes "explosive" is because dust has a large surface area. Compared with bulk materials, dust has strong chemical activity, a large contact area with air, more adsorbed oxygen molecules, and a fast oxidation exothermic process. When the conditions are right, if one of the particles of dust is ignited by fire, a chain reaction occurs like an atomic bomb, and an explosion occurs.