The steps involved in making cement are depicted on the one diagram, along with the equipment needed at each stage, and the method used to make concrete from various materials is shown on the other diagram.
Overall, the main points to note are that cement production is a complex process that consists of several stages, and that concrete is made from four basic elements with precise proportions.
Looking at the cement production diagram in more detail, we can see that, in general, raw materials such as limestone and clay are first crushed into powder through a crusher, then the powder is put into a mixer and passed through a rotating heater where heat is applied. This process creates the raw materials which then are passed onto a grinder and further ground into cement. Lastly, it is packaged into bags and marketed for sale.
On the other side, the concrete-making process starts with mixing cement, water, sand, and gravel with percentages of 15%, 10%, 25%, and 50%, respectively. Through blending, concrete is finally made out.