Please review my task 1 essay

The diagram below shows the stages and equipment used in the cement-making process, and how cement is used to produce concrete for building purpose.

My essay:

The diagrams illustrate the process of making cement before being used as an ingredient in the concrete production.

Overall, limestone and clay have to pass through four stages, starting with being crushed into powder and ending with cement being packed ready for use. Next, in the production of concrete, there are four ingredients, including: cement, sand, water and gravel to make concrete.

In the first stage of cement production, limestone and clay are crushed together to make powder, which Is then combined in a mixer before going through rotating heater to become grinder. Next, this ingredient is transferred into cement under the stress of grinder and finally being put into bags ready to consumption process.

On the other hand, in the production of concrete, concrete consists of gravel, which is small stones making up to 50% of the ingredients. Other materials include cement (15%), water (10%) and sand (25%). This mixture is poured into a rotating machine called concrete mixer to become concrete.