The diagrams below show 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 chart illustrates the process for producing concrete for building by using

cement

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two

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steps and several

Correct quantifier usage

pieces of equipment

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equipment

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equipments

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.

Overall

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, there are

two

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main stages for producing concrete, including producing

cement

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as raw material and using it to create concrete.

Besides

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, there are

two

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materials

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needed in producing

cement

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and additional three

materials

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for concrete except for

cement

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.

The first step is

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cement

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production. First of all, the original

materials

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,limestone and clay are crushed into powder by a crusher.

Second,

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the powder is delivered into a mixer for a complete mix of

two

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materials

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and sent to the next section of the equipment, a heater.

Third,

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the mixed item is heated in a rotating heater by a heating device at its bottom and

then

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falls to a conveyor belt.

Finally

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, through the belt and grounded by a grinder, the

cement

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is already created and

then

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packaged into bags preparing for the next step. The second step is concrete production.

Cement

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, water, sand, and gravel composed of small stones are mixed and blended with the proportion of 15%,10%,25%, and 50% respectively into a clockwise concrete mixer. And eventually finishing the process of producing concrete.