fc2user14159q blog, The Small Scale Stone Crushers Machines In Kenya adopts the impact principle to achieve selective crushing of materials during work. Its product has good grain shape and few pin pieces. It is often used for the final crushing of subgrade roads with high aggregate requirements.ball mill ore grinding, Ball mills rotate around a horizontal axis, partially filled with the material to be ground plus the grinding medium. Different materials are used as media, including ceramic balls, flint pebbles and stainless steelballs. An internal cascading effect reduces the.