Describes the combination sculls leaves and tray dryers drying system processes, the device structure and working principle, the energy consumption of its good use and environmental resistance were analyzed and compared, and certainly this combination compared to conventional drying system Flash convective drying combination in the industrial barium salt production rationality and significant energy savings. BaSO4 colorless orthorhombic crystal, or amorphous white powder, non-toxic, decomposed at 1450 ℃. Chemically stable, very low solubility in water (60 ℃ maximum solubility in water, of 0.46g / 100g water), mainly used in paint filling. In the process of barium sulfate, the drying process is the last one, the current commonly used Chinese dried in different ways, there is spin flash drying, two pairs of blades drying, rotary drying kiln dried sculls combination disc plus dried leaves its dry mode of production is directly related to the quality of the final product, the impact of the final product moisture content, whiteness and other technical indicators. We design and manufacture and installation of a company's annual output of 40,000 t precipitated barium sulfate (by-product of 22,000 tons of sodium sulfide) system, using paddles leaves plus disc combined drying systems, barium sulfate slurry moisture content of about 25%. Material white paste; after the final moisture content of dried material should reach 0.2%, an apparent density of 3.5 ~ 3.8Kg / L. The paddles leaves dryers and tray dryers for drying a combination of barium sulfate, full and effective use of their respective advantages, sculls leaves drier effective solution of barium wet sticky and difficult to deal with the problem; tray drying machine effectively solve the problem of water depth the effect of drying below 10%, the combined system in the industrialized actual production process with favorable results. Double paddle plus disc dry composition drying system and flash drying system compared to the same yield and production conditions, combined drying system can save 30% -40%, but double blade disc dry composition plus the cost of the partial drying system high; compared to the double disc blades plus dry composition drying system and two pairs of blades drying system, which is higher cost and power consumption; double paddle drying system plus plate dry composition as compared with the rotary kilns, which System of a larger area, higher investment, and the whiteness of the product is not guaranteed. 

palabras clave: Paddles leaves dryer, tray dryer, ,