Chemistry Cement Flashcards
1
Q
Making of Portland cement has steps:
A
Two big steps:
Rotatory kiln, ball mill
2
Q
Processes in the kiln:
A
Drying, preheat, calcining, sintering/ clinkering, cooling, dehydration, calcination, solid state reaction l, clinkering, cooling.
3
Q
Temperature for drying and preheat
A
- 20-<100
- 100-300
400-750
600-900
4
Q
Temperature for calcining sintering clinkering
A
- 600-1000
- 800-1550 ( 1350 exothermic)
5
Q
Temperature for dehydration, calcination
A
- Upto ~ 450
- 450-900
6
Q
Temperature for solid state reaction, clinkering.
A
> 900-1300
1300-1550
7
Q
A
8
Q
A
