The diagram illustrates the process of brick manufacturing for the building industry. The process involves several stages, starting from the extraction of clay and ending with the delivery of finished bricks.
Initially, clay is extracted from the ground using a digger. The clay is then placed on a metal grid to break it into smaller pieces, which are subsequently mixed with sand and water. This mixture is then molded into brick shapes either by using a wire cutter or a mold.
The shaped bricks are then dried in an oven for 24 to 48 hours. Following this, they undergo a two-stage firing process in a kiln. The first stage involves moderate heating at temperatures between 200°C and 980°C, while the second stage requires high temperatures ranging from 870°C to 1300°C. After firing, the bricks are cooled in a chamber for 48 to 72 hours.
Finally, the bricks are packaged and delivered to their destinations. This comprehensive process ensures that the bricks are durable and suitable for construction purposes.