Help with heat balances in raw mill

I'm a Mechanical Engineering student in Chile.

I'm currently  developing a proyect in a Cement company and I was wondering if someone could help me.

I've checked out many books but none focuses on the drying of raw materials like I need. They have a reference of necesary heat but I need more detail in that subject.

The mill is an Atox 30 with a hot gas generator with Fuel Oil Nr 6 as fuel.

 I'm looking at alternatives to reduce or change the current fuel. So I need heat balances of the entire mill including the hear generator, VRM, cyclon, ventilator and electrostatic filter. 

I have registry of material humidity, heat generated and production of raw meal.