The purpose of this paper is to present the relevant data for paddy drying in mixed-flow dryer, obtained with conducted research on high-capacity dryer. An examination was carried out to reach the correct drying condition in industrial rough rice dryer. The attention was concentrated on main dryer element, the horizontal drying module. One drying module is composed of one or two drying rooms and one tempering section. By field tests, the heat flow amount and continuity were observed and evaluated in multi-thermal zoned drying process. The dryer is composed of five modules with double drying room and one tempering section, one module of three drying rooms without tempering section and four drying rooms in package as cooling section. Two thermal-zones drying system was exploited, with inlet air temperatures up to 44 o C, and with inlet air temperatures up to 40 o C. In the cooling section the air temperature was dictated by the grain outlet temperature up to 36 o C. Intermittent paddy tempering of up to two hours was accepted.