Working Principle of Calcium Carbonate Dryer
The wet material is continuously added to the first layer of drying plate on the upper part of the dryer from the feeder, and the rake arm with the rake blade makes a rotary motion to make the rake blade continuously turn over the material. The materials flow through the surface of the drying disc along the exponential spiral line. The materials on the small drying disc are transferred to the outer edge, and fall to the outer edge of the large drying disc below. The materials on the large drying disc move inward and fall into the next layer of small drying disc from the middle blanking port.
The large and small drying plates are arranged alternately from top to bottom, so that the materials can flow continuously through the whole dryer. The hollow drying plate is filled with heating medium in the form of saturated steam, hot water and heat transfer oil. The heating medium enters from one end of the drying plate and exits from the other end. The dried materials fall from the last layer of drying tray to the bottom layer of the shell, and are finally transferred to the discharge outlet by the rake blade. The moisture escapes from the material and is discharged from the moisture discharge port on the top cover. The moisture of the vacuum disc dryer is extracted from the vacuum pump port on the top cover.
Dry materials discharged from the bottom layer can be packaged directly. By adding fin heater, solvent recovery condenser, bag type dust collector, dry material back mixing mechanism, induced draft fan and other auxiliary machines, the drying capacity can be improved. Drying paste and heat sensitive materials can easily recover solvents and conduct pyrolysis and reaction operations.
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