Cement Production Line
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A cement production line is a plant designed for the manufacture of Portland Cement. It transforms raw materials such as limestone, clay, and others through a process involving grinding, heating, and further grinding to produce the final powder product cement.
The entire process can be divided into three fundamental stages:
Process
three fundamental stages:
1. Raw Material Preparation & Blending
Crushing: raw materials limestone, clay, sand and iron ore are crushed in crushers to get the size of smaller than 50mm.
Raw Meal Grinding: The crushed and proportioned materials are fed into a raw mill. They are dried and ground into a fine powder called raw meal.
Homogenization: The raw meal is then sent to a Homogenizing Silo where air is pumped through it to ensure a perfectly consistent chemical composition before the next stage.
2. Clinker Production
Preheating & Pre-calcining: The raw meal enters a cyclone preheater tower. In several cyclones, it is heated by the rising hot gas from the kiln. In the precalciner, up to 90-95% of the limestone decarbonation occurs before the material enters the kiln.
Burning / Sintering: The heated material then enters a rotary kiln. It is heated to 1,450°C and the clinker is produced.
Cooling: The red-hot clinker exits the kiln and is rapidly cooled in a grate cooler. This process improves the cement quality and recovers heat, which is redirected to the kiln and precalciner.
3. Cement Grinding & Packaging
Grinding: The cooled clinker is mixed with gypsum and sometimes other additives like fly ash or slag. This mixture is ground into an ultra-fine powder in a cement mill. This final product is cement.
Storage & Packing: The finished cement is stored in large silos. It is then either packed into bags or loaded in bulk into trucks.