The steps of clay bricks manufacturing by Brick machinery (Step 1)
The process of making brick generally consists of the following steps: Gathering, crushing, grinding, screening,
and mixing the raw materials; making the brick; and setting, drying, firing, packaging and inventorying the final
product.
Raw Material Preparation
The manufacturing of brick begins with the gathering of surface clays and shales from the quarry. Raw materials
are transported to storage areas in preparation for crushing. The crusher breaks up the large chunks of clay or
shale and passes it to conveyors heading for the grinders. The grinders or ‘Muller Wheels’ pulverize the material
to a fine consistency. The pulverized material passes over a vibrating screen in which the fine material passes
through to the next step and the coarse material is returned to the grinder to be reground.
Up to this point the material has been kept dry. Once screened, the material is sent to the pug mill where it will
be tempered to make a homogeneous plastic mass ready for shaping in the required brick form. The pug mill
consists of a chamber that houses one or two revolving shafts with blades rigidly attached, which thoroughly
mix the material. Water is added to provide the proper plasticity and materials, such as manganese, are added to
change the body color.