Heat Transfer Conditions in Hydrogen-Fired Rotary Kilns for …
Convective heat transfer from hot air to the solid charge and walls in a non-fired rotary kiln was studied exptl. Ottawa sand was heated by passing it countercurrent to a flow of preheated air in a 2.5 m × 0.19 m inside diam. rotary kiln. Axial temp. profiles of gas, wall, and solids were measured.
