According to the process flow, it is divided into batch type and continuous type with forced stirring, and drum type with self-falling continuous stirring. According to its installation situation, it can be divided into fixed type and mobile type. The former unit is fixedly installed on the site and is mostly used in situations where large-scale projects are concentrated. The latter is large and medium-sized. The unit is installed on several special flat trailers and hauled to the construction site and then assembled and erected. It is mostly used in highway construction projects; for small ones, the unit is installed on a special flat trailer, which can be transferred. , Mostly used in road maintenance projects.