Why does flour explode when it meets an open flame?

There are two reasons for flour explosion: flour itself will not explode, and the so-called flour explosion is actually a dust explosion. When the dust particles in the air reach a certain concentration, as long as they encounter an open flame, the flour will heat up, which will lead to the rapid expansion of air volume and eventually an explosion. Flour contains carbohydrates, which are combustible. Flour raises dust and explodes when it meets an open flame in the stove at home. In addition, the air contains oxygen, which is a kind of combustion-supporting gas and will increase the fire area.

Flour explodes for two reasons:

1, the flour itself will not explode. The so-called flour explosion is actually a dust explosion. When the dust particles in the air reach a certain concentration, as long as they encounter an open flame, the flour will heat up, which will lead to the rapid expansion of air volume and eventually an explosion.

2. Flour contains carbohydrate, which is a combustible substance. Flour raises dust and explodes when it meets an open flame in the stove at home. In addition, the air contains oxygen, which is a kind of combustion-supporting gas and will increase the fire area.