Sand Dryer Three pass rotary sand dryer adopts the latest European energy saving technology, clamp type structure. Internal cylinder, middle cylinder and outer cylinder form a since the insulation structure. Special thermal design idea eliminates wind tunnel heat loss, increases the heat exchange area and the unit volume evaporation intensity, bring about good energy saving effect, high drying efficiency and good drying effect. In line with the international trend of creating an environment-friendly and resource-saving society, three pass sand rotary dryer is a new type of environmentally-friendly and energy-saving drying equipment. The three pass sand rotary dryer is used for drying common sand, yellow sand, river sand, construction sand, sea sand, garnet sand, slag, clay and other raw materials, widely used in building materials, chemical industry, foundry industry, etc., can adapt to a variety of fuels such as coal, oil and gas. Sand Dyer Features: 20% investment lowered for the same capacity. Thermal efficiency improved by 40%. Coal consumption (as fuel) is 30% of conventional dryers. Land area reduced by 60% by comparison. Finished product moisture within 0.5-1% or lower. Good sealing and high reliability.