Problem 4: Fuel saving

Calculate the minimum amount of fuel 1000Kg Al₂O₃. Use the data given in problem3.
Let x kg fuel is required.

and

We have to calculate flue gas. The calculation gives kg mols










Heat balance:



Performing heat balance calculation, we can get

fuel is required to produce 1000Kg alumina.

We save

Conclusion:
This lecture discusses the basics of calcination by solving problems. The importance of heat balance calculations is shown in problem 4 which shows that fuel saving can be achieved.

References:
1)   Rao, Y.K:  Stoichiometry and Thermodynamics of Metallurgical process, Cambridge University Press, 1985

2)   Butts, Allison: Metallurgical Problems, McGraw Hill Book Company, 1943

3)   Fine, H.Alan and G.H.Geiger: Handbook on Materials and Energy Balance Calculations in Metallurgical Processes