Kiln & Pre-Heater Essential figures and there Reference for Bench marking

S.NO Parameters Unit Norms
1. Specific thermal loading (max) G cal/h/m
4.0 – 5.0
2. Specific volumetric loading (Sustainable) tpd/ m
4.5 – 6.5
3. Specific volumetric loading (Peak) tpd/ m
7.0
4. Percentage filling % 13 – 17
5. Retention time (Minimum)
➢ In Line calciner
➢ Separate Line calciner
➢ Caciner with Pet coke firing
6. Tertiary air temperature

Sec.
o
3
3
C
850 – 1000
7. Secondary air temperature
C
1000 – 1200
8. Burner flame momentum, For normal coal % m/s 1400 – 1600
9. Burner flame momentum, For Pet coke % m/s 1800 – 2200
10. Margin in Burner capacity % 25
o
2

3.2
2.6
4.5