The diagram below shows the process by which bricks are manufactured for the building industry. Summarise the information by selecting and reporting the main features and make comparisons where relevant.

The flow chart illustrates the manufacturing process of

bricks

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for the building industry. There are eight steps in

this

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process: digging, rolling, mixing, cutting and shaping, drying, heating, packaging and delivering. In the first step, clay which is dug from the ground by the digger is put on the roller through the metal grid.

Second,

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sand and water are added.

Third,

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the mixture, including clay, sand, and water is either cut into

bricks

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by the cutter or shaped with the mould.

Then

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, the

bricks

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are put in the drying oven where

bricks

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are dried for 24 to 48 hours.

Next,

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the

bricks

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are moved into the kiln, where they are heated first at moderate temperatures of 200

°C

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to 980

°C

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and

then

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at high temperatures of 870

°C

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to 1300

°C

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. After that, they are cooled down in the cooling chamber for 48 to 72 hours.

Last

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, the

bricks

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are first packaged and

then

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delivered to the building industry.