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 diagram illustrates a step-by-step

process

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by which

bricks

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are manufactured for the building industry.

Overall

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, there are seven main stages in the manufacturing of

bricks

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, starting from raw materials gathered with machines all the way to the packaging and delivery of them. The

process

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starts with a digger extracting

clay

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from the ground.

Secondly

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, the

clay

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undergoes a refining

process

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, where it is placed on top of a metal grid, filtering some of the rocks or impurities caught during the first stage of the

process

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, where the clean

clay

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falls on a roller that collects it.

Thirdly

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, the filtered

clay

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is mixed with sand and water, where it can either be placed into moulds to shape the mixture into brick shapes, or it can be cut using a wire cutter to obtain these same shapes.

Then

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, the unfinished

bricks

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are placed into a drying oven for at least a day or two. In the fifth stage of the

process

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, the dehydrated

bricks

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are placed into

too

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two

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separate kilns, where they are subjected to moderate and high temperatures, ranging from 200 to 980 degrees celcius and 870 to 1300 degrees celcius respectively.

Then

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, they are left to cool in a cooling chamber for 2 to 3 days.

Finally

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, the finished

bricks

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are packed together and

then

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delivered.