Weight of slag and its composition in percent in given below:
| |
Kg |
% |
| SiO2 |
189.97 |
34.09 |
| FeO |
6.00 |
1.08 |
| Al2O3 |
94.30 |
16.92 |
| MnO |
5.04 |
0.92 |
| P2O5 |
8.40 |
1.50 |
| MgO |
24.53 |
4.41 |
| CaO |
229.00 |
41.10 |
| Total |
557.24 |
100% |
|
Volume of air required calculation to consider the top gas. All the carbon charged except that dissolves in iron will be available in the top gas. Air is required in the blast furnace to combust carbon of coke at the tuyere level. From the amount of coke and the oxygen available through the reduction of oxides, volume of air can be determined.
Oxygen available from the charge = Decomposition of  + oxygen released through the reduction of the oxides
Total  available from charge 
Total C in gases 
|
