Indirect Heat Drier Is Ideal Drying Equipment

The indirect heat drier is one kind of ideal drying equipment with a reliable operation performance and stable production capacity. The indirect heat drier is mainly formed with supporting device, rotator, plate, transmission device, seals and other components with strong points of reliable operation, low energy consumption, high thermal efficiency, reasonable structure, well-made, convenient operation, etc. The indirect heat drier belongs to traditional dryer, which is an indirect heated rotary dryer with a mainstream of conduction and heating, while enjoys the thermal radiation. Meanwhile, the indirect heat drier is easy to achieve automatic control to reduce operator labor and save resources. The indirect heat drier is mainly used to dry materials with certain humidity and particulate size like sand, casting sand, cinders, small particle size of clay, as well as other small particles materials not afraid of high temperature and soot-stained. The moisture content of dried material can be 1-0.5 % or less.

    The dried material is discharged by the feed tank from the bottom of the dryer. The moisture gas produced in drying process will be discharged by the hydro-fuge fan above the dryer. Materials are generally fed into the inner layer of rotary drum by feeding device to achieve downstream drying, so material in the inner layer of copy board will be constantly lifted and fell down to achieve heat exchange in the shape of helix. The material dried by indirect heat drier does not directly contact with the heat transfer medium, because the heating medium is a hot flue gas from the radial fire tube to the interlayer of zigzag flue board, and then come bake to the inlet end along with the gap between the tube wall and the sheet and extracted and emptied by the smoke suction fan.