1. The machine has two side-by-side crushing chambers, which achieve the effect of one machine with two stages of crushing operations. The diameter of the rotor in the first crushing chamber is smaller than that of the crushing chamber, and it has radial blades. The angle between the No. 1 rotor blade and the main shaft in each destruction chamber is about 5 degrees to 15 degrees and rotates to the discharge direction, and the No. 2 rotor blade is perpendicular to the main shaft. Replaceable blades made of high-hardness alloy are fixed on the blades, and the cylinders of the destruction chamber are parallel to each other with a small gap between them. Between the first destruction chamber and the second destruction chamber, between the second destruction chamber and the fan chamber are separated by adjusting rings. These two groups of blades impact respectively, and the grinding and shearing effects and the counterattack effect of the knock bolt destroy the material;

2. Forced ventilation inside the machine, one can have a grading effect, and the other can diffuse heat;

3. The machine is equipped with a slag discharge system. During the operation of the machine, it can remove debris and residual hard-to-grind stones in the machine, which is conducive to improving product quality, ensuring normal production capacity and reducing wear;

4. The particle size of the product can be adjusted by the air volume inside the machine, the gap between the cone part and the blade, etc.;

5. It can form a variety of systems with the micro powder classifier, which can be used for different destruction requirements of various minerals.