Illustration

.In afluid bed reactor Zinc concentrate of composition
 is roasted with stoichiometric amount of air. Roast product is discharged from the other end of the reactor.

During roasting 1% of total ZnS remains unoxidized, whereas 80% of total iron charged forms ZnO.
Fe₂O₃.

Find the bed temperature when 10 % of heat input is lost to the surrounding.

MaterialBalance: consider 1000 kg Zn concentrate

Roasting produces roast product and gases. Material balance is left for the exercise.

Roasting produces roast product and gases . Material balance is left for the exercise.