Solid raw material smashing device and application method thereof

The invention provides a solid raw material smashing device and an application method thereof. The solid raw material smashing device comprises a chemical solid raw material feeding device, a chemicalsolid raw material rough grinding device, a chemical solid raw material accurate grinding device, a chemical solid raw material collecting device and a control system. According to the solid raw material smashing device and the application method thereof provided by the invention, a solid raw material is conveyed and fed through a conveyor belt in the chemical solid raw material feeding device, the chemical solid raw material rough grinding device is used for roughly grinding the solid raw material under a liquid nitrogen environment, the chemical solid raw material accurate grinding device is used for accurately grinding the solid raw material under a low-temperature nitrogen environment, and the chemical solid raw material collecting device is used for recovering the smashed solid raw material, so that the soli