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 seven-stage

process

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by which

bricks

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are made for the building industry.

Overall

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,

it is clear that

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the brick manufacturing

process

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is a linear

process

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that consists of seven main stages

:

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:

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digging the

clay

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, shaping the

bricks

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, drying, heating and cooling, packing, and delivering the final product to the building industry.

First,

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the

process

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starts with a large digger, which is used to dig

clay

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out of the ground.

Next,

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the

clay

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is moved to a metal grid, where it is broken into smaller pieces by a roller machine.

Then

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, sand and water are added to the

clay

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and mixed together.

Following

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this

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,

this

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mixture is shaped into

bricks

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in two ways

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either by using a wire cutter or by using a mould. After that, the

bricks

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are placed in a drying oven for 24 to 48 hours.

Subsequently

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, they are heated in a kiln, at a moderate temperature from 200

°C

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to 900

°C

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, and

then

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at a very high temperature between 870

°C

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and 1300

°C

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. Once the heating

process

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is completed, the

bricks

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are kept in a cooling chamber for 48 to 72 hours.

Finally

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, the

bricks

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are packed and delivered by truck to the building industry