Raw Mill Heat Balance

RAW MILL HEAT BALANCE

PRDH / Cement

Plant :

Lafarge - Surma Cement, Bangladesh

Date :

Mill :

25-Jan-06

ATOX - 47.5

Capacity : Moisture in :

Ref. :

JS / SM

Rev. :

0

Separator :

RAR- 47.5

135 TPH

Product Size :

12% R on 90 µ

8.0%

Moisture out :

0.5%

HEAT BALANCE INPUT

Amount

Temperature

Heat

t/h

deg.C

Mcal / h

Kiln Gas

-

-

-

Kiln dust

-

-

-

Recirculation Gas

412.2

93

9862

Recirculation Dust

14.1

93

282

Hot Gas

107.1

400

10917.0*

Aux. Air

0.0

36

0.0

Material Dry

135

20

562

Water

11.7

20

235

False Air

57.1

36

506

Grinding Heat

135

-

1248 23612

TOTAL OUTPUT

Total Gas (incl. Water)

Amount

Temperature

Heat

t/h

deg.C

Mcal / h

587.6

90

13662 6576

Evaporation

11.1

All material

149.1

90

2883

0.7

90

61

Water Heat Loss TOTAL

*: Approximate diesel requirement - 1600 lit/h

429 23611