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cement manufacturing process flow chart wikipedia

manufacturing of cement by wet process | cement

manufacturing of cement by wet process | cement

The raw materials used for the Manufacturing of Cement by Wet Process are calcareous materials, such as limestone or chalk, and argillaceous materials such as shale or clay. Cement factories are installed where this raw material available in abundant quantity.

1. The raw limestone from quarries is first crushed into small size fragments. Then it is mixed with clay or shale in a ball or tube mill and ground to form a slurry of a fine consistency with the addition of water. (The slurry is prepared with a water content of about 35 to 50 percent, fine crushed particles are held in suspension.)

2. This slurry is taken to slurry tanks or basins by pumping, where it is kept in an agitated condition using rotating arms with chains. Also, blowing continuously compressed air from the bottom to prevent settling of limestone and clay particles.

6. It is made of a thick steel cylinder of diameter anything from 3 meters to 8 meters, lined with refractory materials, mounted on roller bearings, and capable of rotating about its axis at a specified speed.

16. In the modern method of cement grading, the particle size distribution of cement particles is maintained in such a way as to give a desirable grading pattern. Same as the good grading of aggregates is essential for making good concrete, it is now recognized that a good grading pattern of the cement particles is also important.

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