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Characteristics of magnesium carbonate material:
Magnesium carbonate is an inorganic compound commonly known as gray stone, limestone, stone powder, marble, and calcite. It is a white powder, odorless, and has two types of crystals: orthorhombic crystal aragonite and hexagonal rhombohedral crystal calcite. It can be used as a filler in industries such as rubber, plastics, papermaking, coatings, and inks.
Characteristics of disc dryer equipment:
The disc dryer is a multi-layer fixed hollow heating circular loading tray, rotary rake stirring, vertical continuous drying equipment mainly based on heat conduction, developed by continuously improving a series of advanced technologies on the basis of intermittent stirring and conduction dryer. This drying process involves passing a heat carrier into each hollow disk layer, indirectly heating the wet material placed on the disk surface through thermal conduction. Under the scraping action of the rotating rake blades, the moisture in the constantly moving and rolling material evaporates at the operating temperature, and its vapor is discharged with the equipment exhaust gas, thus continuously obtaining qualified dried products at the bottom of the equipment. In recent years, many countries have widely applied it in fields such as chemical engineering, dyes, pesticides, plastics, pharmaceuticals, and food, constantly improving and enhancing its use. Compared with traditional drying equipment, it has the advantages of high thermal efficiency, low energy consumption, uniform drying, good product quality, small footprint, fewer auxiliary equipment, less pollution, continuous production, convenient operation, and wide applicability. Therefore, there is a broad development prospect in drying technology, which has attracted more and more attention and research. Based on product performance, drying requirements, and processing capacity, the disc dryer adopts a series of measures such as spindle stepless speed regulation, manual adjustment of disc feeder height adjustment sleeve, control of temperature distribution of each layer of heating disc, and final cooling and temperature reduction, fully utilizing the superior performance of the disc continuous dryer.
Working principle of disc dryer:
The wet material is continuously added to the upper layer of the dryer's drying disc from the feeder, and the rake arm with rake blades rotates to make the rake arm rotate and make the rake blades continuously flip the material. The material flows along an exponential spiral over the surface of the drying disc, and the material on the small drying disc is transferred to the outer edge, where it falls onto the outer edge of the large drying disc below. The material moves inward on the large drying disc and falls into the next layer of small drying disc from the middle discharge port. The drying plates of different sizes are arranged alternately up and down, allowing the material to flow continuously through the entire dryer. A hollow drying tray is filled with heating medium, which includes saturated steam, hot water, thermal oil, and high-temperature molten salt. The heating medium enters from one end of the drying tray and exits from the other end. The dried material falls from the drying tray at the bottom of the shell, and is then transferred to the discharge port by the rake blades. Moisture overflows from the material and is discharged through the dehumidification port located on the top cover. The moisture in the vacuum disc dryer is discharged through the vacuum pump port located on the top cover. Dry materials discharged from the bottom layer can be directly packaged. By adding auxiliary equipment such as fin heaters, solvent recovery condensers, bag filters, dry material mixing mechanisms, and induced draft fans, the production capacity of drying can be improved. Drying paste like and heat sensitive materials can facilitate solvent recovery and enable pyrolysis and reaction operations.