Please check my writing task 1

The diagram illustrates how the cement is produced, the stages and needed tools in the process and the way concrete is manufactured for construction plans by cement. The diagram involves two main stages beginning with cement making process and finishing concrete production.

At the beginning of the main stage, lime stones and clay are put into a crusher for pulverize to powder. After that, the powder is shifted to the mixer to mix the compound. And then, the powder went through a small pipe to rotating heater. At this machine, the powder is rotated and heated simultaneously before conveying to the grinder. Then, the compound is husked to become cement. One it is ready, cement is packed to be several bags.

The process continue with the production of concrete creation, the compound is put into a concrete mixer with the component as below: cement (15 %), water (10%), sand (25%), gravel (50%). Following that, the machine rotates follow clockwise to mix the compound together. The process finish with the concrete is prepared for construction aim.

P/s: if you think some words or sentences are better to replace, please give me to improve my skill.