The screenless hammer mill, like regular hammer mills, is used to pound, rather than a screen, it uses air flow to separate small particles from larger ones. Conventional hammer mills in poor and remote areas, such as many parts of Africa, suffer from the problem that screens break easily, and cannot be easily bought, made or repaired.
If the hammer mill isn't equipped with a wind blower, the crushed materials will be expelled out by the airflow in the pulverizing room. Types of wood hammer mill. According to the shape of screener, hammer mill can be classified into halfscreen hammer mill, fullscreen hammer mill, and screenless hammer mill.