The diagram below shows the stages and equipment used in the cement-making process, and how cement is used to produce concrete for building purposes. Summarise the information by selecting and reporting the main features and make comparisons where relevant.

The presented diagrams illustrate the key stages of the

cement

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-making

process

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and how it is the main part of producing concrete. These pictures consist of materials and equipment.

Overall

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, the

cement

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manufacturing

process

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is more complex than the concrete manufacturing

process

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. There are five steps in

cement

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manufacturing,

whereas

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only a mixer is involved when making concrete.

In contrast

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, even though the

cement

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process

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is multistep, only two compounds are involved,

while

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for making the other one, four compounds are needed. For producing

cement

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, in the first step, limestone and clay were crushed by a crusher to become powder. Afterwards, they mixed in a mixer and

then

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heated in a rotating heater to produce a melted mixture, which went through a grinder and made

cement

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. In the

last

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stage, the produced

cement

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is packed in bags. In manufacturing concrete, four materials, including 15%

cement

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, 10% water, 25% sand, and 50% gravel, which are small stones, are put together in a concrete mixer.

Therefore

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, after mixing all materials, the concrete will be ready to use in the building.