Clinker Grinding Units

MANUFACTURING PROCESS FOR CEMENT
The Clinker Grinding Plant requires the following raw materials:

1. Clinker
2. Gypsum
3. Additives

The Clinker is procured from Clinker Grinder Unit from India, China, Indonesia, Gulf and European counties. The mined Gypsum is available in local market. The additives are very important and vary with application of Cement. Generally, Slag of Iron Industry is used for making Slag Cement and Over Burnt Bricks / Fly ash from Thermal Power Plants are used to make Pozzolona Cement. The additive is selected on the basis of availability, economy and of course the demand of specialty Cement. All the raw materials are tested in laboratory for the quality before use.

All the raw materials are crushed with the help of Jaw Crusher if they contain lumps. The feed size for the Cement Mill should be less than 25 mm The raw materials are fed into their respective hoppers with the help of Belt Conveyor Or elevators. The hoppers are fitted with feeding systems which are connected with auto measuring and control system(Weighing Trolley). The measured quantity of raw material is discharged on a weighing Trolley/ conveyor belt. The weighing trolley/ conveyor belt carry the mixed material to the discharge hopper. The material from discharge hopper is taken to the elevator to feed into the Mill feed hopper. The discharge of the feed hopper is controlled by an adjustable speed rotary feeder. The feed of the mill can be varied as per the requirement. The rotary feeder discharge the material in to the Cement Mill. There are three chambers in the Mill. The chambers are filled with grinding Media ( balls & Cylpebs). The material is ground fine ( 3500 Cm2/gm.). The cement is discharged from the mill to the elevator to fill it in the Storage / Aeration Silo. The silo is fitted with compressed air coils. The air cools down the cement in the silo. The cooled Cement is packed with the help of packing machine in 50 Kg. Bags. The final product is tested from the bags for the quality and quantity and other parameters as per the statutory requirements provided by the Government.