Writing task 1: Brick manufacturing

The diagram gives the information about the operation how to produce the building meterial, brick, for the structure manufacturing. The process includes 7 steps and can be deviced into 3 main stages.

Firstly, the raw meterial, clay, has to be dug up by a special machine such as a digger. And then the clay is thrown onto the metal grid in order to be selected and broken into the smaller ones, which fall through the metal grid onto a roller. On the roller a worker adds sand and water to create a mixture among sand, water and clay. The mixture is either cut into brick shape by wrie cutter or moulding.

Secondly, the fresh brick are brought into a drying oven and kept in here in 24 to 48 hours, which will make all water is gone out. In next step, the bricks are transferred to a kiln, which is kind of high temperature oven. At first, they are kept at moderate temperature between 200 and 980^oC and then at high temperature between 870^oC  and 1300^oC. at the end of the second main stage, the bricks are stayed in the cooling chamber at least 48 hours and a maxium of 72 hours to decrease its temperature

Finally, when the bricks are ready to be used, they will be packaged and delivered to its fimal destination, a factory or a customer