A hammer mill is a type of industrial machine used to crush or grind materials into smaller pieces. It operates by using rotating hammers that strike the material, breaking it down into fine particles. This equipment is commonly used in various industries, including agriculture, food processing, and recycling, to process grains, wood, and other materials. The design of a hammer mill allows for efficient size reduction, making it a popular choice for producing animal feed and biomass fuel. The size of the final product can be adjusted by changing the screen size or the speed of the hammers, providing versatility for different applications.