ngocmainguyen
May 11, 2021
Writing Feedback / Writing task 1 process: the production of bricks [3]
The production involves six main stages beginning with preparing clay and finishing with delivering.
In the first step, clay is collected under the ground by a machine called roller. Being screened by the metal grid, it is put into the roller, then sand and clay mixture is created by mixing clay with sand and water. In order to be in shape, the mixture is passed through a wire cutter or put into a mould and drawn in the pattern. Bricks are basically shaped, preparing for the next steps.
Thousands of bricks are heated in the drying oven from 1 to 2 days. After that, bricks are put into two kilns - a type of large box, which contributes to make bricks hard in a moderate temperature from 200oC to 989oC, then in a higher temperature - about 870oC. Putting in a cooling chamber from 48 to 72 hours is the final step of producing bricks. Finally, bricks are packaged and can be used for construction purposes.
The diagram illustrates how bricks are made.
The production involves six main stages beginning with preparing clay and finishing with delivering.
In the first step, clay is collected under the ground by a machine called roller. Being screened by the metal grid, it is put into the roller, then sand and clay mixture is created by mixing clay with sand and water. In order to be in shape, the mixture is passed through a wire cutter or put into a mould and drawn in the pattern. Bricks are basically shaped, preparing for the next steps.
Thousands of bricks are heated in the drying oven from 1 to 2 days. After that, bricks are put into two kilns - a type of large box, which contributes to make bricks hard in a moderate temperature from 200oC to 989oC, then in a higher temperature - about 870oC. Putting in a cooling chamber from 48 to 72 hours is the final step of producing bricks. Finally, bricks are packaged and can be used for construction purposes.
