Summarise the cement production process.

Solutions

Expert Solution

A) Cement production by dry process

Firstly the calacerous(calcium containing materials like lime chalk marine shells) and argillaceous (clay , marl,shale etc) compounds are separately crushed to 25mm. Then air currents are passed through these crushed aggregates and fine grinded in tube/ball mills . Then they are passed through respective channels seperately and mixed in appropriate proportions as required.

This mixture is now preheated at 800°C by extra gas from burning . After that this preheated raw mix is stored . Now it is fed to rotary kiln at 1400°C bg which cement clinkers are formed of size 3-20mm. Cement clinkers are again fime grinded in tube/ball mill and at this stage 2-3% gypsum is also added. Then cement is stored in silos and finally packed

B) wet process

Calcareous materials are crushed as in dry process but argalleceous substances are washed by water in wash mills. Then both are stored seperately in storage basin and then wet grinded in tube/ball mill to form slurry (paste) .

After that blensing of slurry is done to corrected proportions ,then the slurry is gain stored. After that process is same as in dry process that is the cement is then fed to rotary kiln . Then clinkers are formed. And then fine grjnding of clinkers is done in tube/ball mill then stored in cement silos and packed at last.

Ally Wells answered 1 year ago

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