Based on the rotary disc dryer, with the building sand as the experimental material, to set up a single vertical rotating disc heat transfer test bench, based on the theory of energy conservation, analysis of the speed and the particle on the vertical rotating disc diameter, filling rate effect on heat transfer performance. The research shows that the disk rotation speed on the performance of heat transfer effect is large, almost linearly; granular material particle size and material filled rates were on the average heat transfer coefficient is decreased in a near linear relationship and approximate linear increasing relation. disc surface film thermal resistance is about 26 times the particle heat transfer resistance. The experiment has a certain reference value for optimizing the parameters of the disc dryer.