The Construction Civil

The manufacturing of cement

Cement is manufactured in two forms,
* Dry Process.
* Wet Process.

Raw materials

The raw ingredients of Portland cement are iron ore, lime, alumina and silica.

Process of manufacturing:
* Portland cement is produced by mixing ground limestone, clay or shale, sand and iron ore in
the dry form .
* Raw limestone, clay & gypsum minerals are ground into powder & heated in kiln (1600 ° C)
* Minerals interact at that temperature to form calcium silicates (clinker)
* The heating process causes the materials to break down and recombine to form new
compounds named as clinkers.
* After cooling, the clinker is very finely ground
* Finely grounded material is known as Portland cement which react with water in a
crystallization process called hydration.

















Dry Process of Cement Manufacturing :





























Wet Process of Cement Manufacturing :






















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