The Process of Crushing the Material of the Roller Crusher

 The roller crusher is suitable for coarse and medium crushing of brittle bulk materials in cement, chemical industry, electric power, mining, metallurgy, building materials, refractory materials, coal mine and so on. The particle size is large and the material size is adjustable. Pressure strength ≤ 160MPa material broken. Roller crusher for metallurgical, building materials, refractory materials and other industrial sectors broken, the higher hardness of the material. The process of breaking the stone can be divided into the following three stages.
 
1, Press tightly solid stage: the material in its gravity and roller roller under the combined action, into the space gradually reduce the crushing chamber, began to be a smaller squeeze effect, the material layer size is reduced, the particles close to the dense, with the rotation of the two rollers, the material is forced to fall, the bed density increases, the stress intensity increases, and the particles gradually change from point contact to surface contact. Some of the particles are broken along the cleavage plane. This crushing and crushing the same.
 
2, Material bed crushing stage: When the compact material bed to continue to move to the minimum gap between the two rollers, the degree of density to further increase. Stress intensity increases sharply, fine particles will be rearranged under high pressure. Occupy the gap between particles. Resulting in a gap between the particles tend to zero. Under the action of high stress, the material bed begins to carry out stress transfer. There is a strong interaction between the particles, when the stress rise to the material damage limit, the number of particles will produce a high probability of crushing behavior or micro-cracks.
 
3, The cake discharge stage: due to increased grain crushing rate, has been crushed fine particles must be under the action of high stress joints, to move around the gap, rearrange their respective positions, individual large particles surrounded by fine particles ; In the two roller gap at the minimum, the bed density reached the highest. So that a large area of "knot". The formation of a continuous "material cake" discharge crushing chamber. The dried cake is made into a powder. Even by hand can be twisted.