A roller crusher, also known as a roller mill or roller press, is a type of compression crusher used to crush materials into fine particles or flakes. It consists of two cylindrical rollers that rotate in opposite directions, with one roller typically fixed and the other movable. The material to be crushed is fed between the rollers, which compress and crush it, resulting in a reduction in particle size. Roller crushers are commonly used in mining, construction, and mineral processing industries to crush materials such as coal, limestone, gypsum, and ore. They are known for their high efficiency, low operating cost, and ability to produce uniform-sized particles. Roller crushers are available in various configurations, including single-roll, double-roll, and triple-roll designs, each suitable for different applications and material types.