... 2. reasonable price 3. high technology 4. less maintenance Screw Conveyor1. characteristics Screw conveyor novel structure, technical index is ... structure, we have dustproof sealing device, discharging end with cleaning device, the low noise, multiuse, convenient ... ash, sand etc, material temperature 200 degrees Celsius. Screw conveyor is unfavorable conveying easy metamorphism, big viscosity, easy ...