Clay brick making machine-Brick machine-Baoshen brick making machine

Clay brick manufacturing process Part two

Screening – dr y processing

Before being shaped, the clay is screened and oversize pieces are returned to the pan mill for further crushing.


Bricks are hand formed, pressed or extruded into their final shape. The method used to shape the bricks affects their final appearance and texture, and sets certain limitations on the handling methods employed during manufacture.

Extruded bricks (common method in South Africa)

Clay with an 18­25% water content is forced by an auger into a horizontal cone­shaped tube that tapers down to the die. Two compaction stages are commonly incorporated, with a vacuum chamber between them to remove any air in the clay that would reduce the strength of the end product.

The extruded clay column is cut into brick­sized pieces by an arrangement of wires. Extruded bricks, although often smooth, may be mechanically patterned or textured. Most bricks of this type have anything from 3­12 perforations, that, by increasing the surface area, reduce the required drying, firing, and cooling times. Any internal stresses are relieved by the perforations and prevent distortion of the bricks during firing.