Clay brick machine also known as vacuum extruder, can use shale, coal gangue, fly ash, clay, etc to produce hollow and solid bricks. Extrusion pressure can attain 3.0-4.2.

This clay brick machine used in shaping process of brick production, the treated clay will be plastic extruded by up stage then via vacuum room into down stage extruding into solid or hollow clay column of required cross section and shape which then cut into green brick by green brick cutter. It is a key device to make solid and hollow bricks.