The diagram communicates the multi‐stage process by which clay is transformed into finished bricks ready for delivery in the building industry. Overall, the procedure comprises extraction, shaping, drying, firing, cooling and packaging, with each phase carefully controlled in terms of time and temperature.
Initially, clay is excavated by a mechanical digger and transported to a crushing unit where it undergoes a series of mechanical processes, namely the passing through a metal grid and roller, resulting in the formation of fine particles. The resultant material is then either extruded through a mould or cut by a wire cutter into individual brick shapes, with the addition of sand and water to adjust consistency.
Subsequently, newly formed bricks are introduced into a drying oven for a period of 24–48 hours, with the objective of removing excess moisture. Thereafter, they are processed in a two-stage kiln system, initially through a moderate-temperature zone ranging from 200 to 980°C, and subsequently in a high-temperature chamber reaching 870 to 1,300°C. Post-firing, the bricks are then subjected to a cooling process in a specialised chamber for a period of 48 to 72 hours. This cooling period is a critical step in ensuring the structural integrity of the bricks. The final stage of the process involves the cooling of the bricks, followed by palletising, packaging and loading onto delivery trucks.