When the material is in the operation area of the roller grinding device. Large pieces of materials are directly crushed, and fine-grained materials are squeezed to form a bed for inter-particle crushing. In the middle of the particle bed, one particle is rubbing against another particle. It causes the corners and edges to fall, and is crushed. The crushed powder group is immediately exposed to the high-speed airflow when it passes outside the disk. The dense fine powder is broken and scattered, and the well is brought into the classifier or folded back according to the size, and the softening effect of the fine powder soft cushion layer is minimized. Bed grinding greatly reduces the useless work of grinding. And a large amount of recycling reduces the over-grinding and buffering effect, thereby improving the grinding efficiency.
The roller hearth heating furnace is an important equipment in the thin slab continuous casting and rolling production line. The Hitachi crawler bottom roller plays a role of linking up and down in function. It heats the continuously cast slab to the steel rolling process. The steel temperature is 1150±10℃. This temperature accuracy is much higher than the temperature difference of ±30℃ that can be achieved by the general walking furnace. This lays the foundation for the production of ultra-thin tropical products. On the other hand, the roller hearth furnace is It also plays an important buffer role in the process.
