The document describes the structure and working principle of the Raymond mill, which consists of a large cyclone separator, collection hopper, spiral conveyor, and air locking device. It explains the grinding process where materials are crushed, classified, and collected as powder, highlighting the efficiency improvements of a new generation Raymond mill including better yield, reduced dust pollution, and stable operation under negative pressure conditions. Additionally, it emphasizes the economic stability for users through optimized powder delivery and storage systems.