Process spray granulation dryer: pressure spray granulation dryer mainly by the feeding system, drying system, dedusting system, heating system and electrical system components, and each system further includes a number of related devices.
The feeding system consists of a mixing tank, a filter, a diaphragm pump and a spray gun. The ball-milled secondary slurry is transferred from the ball mill to the mixing drum, pumped by a diaphragm pump and conveyed, and then passed through a spray gun into the drying tower.

The slurry enters the drying tower from the nozzle of the spray gun and begins the spray granulation drying process. The specific process is divided into three stages:
(1) slurry atomization. The slurry is pressed into the drying tower from the nozzle by a diaphragm pump in the feeding system, and the energy of the pressure is converted into kinetic energy. The slurry is ejected from the nozzle from the bottom to the top to form a high-speed liquid film, and the liquid film is then split into Droplet. The droplet size produced by atomization is inversely proportional to the pressure, and the throughput of the nozzle is proportional to the square of the pressure.
(2) The mist particles are dried into balls. The mist particles and the hot air work in a mixed flow manner. The hot air enters the tower through the hot air distributor on the top cover, and the hot air distributor generates a downward flow of the stream air, and the mist is sprayed from the bottom to the top. Air flow. The droplets form a spherical shape due to the surface tension, and at the same time, since the droplets have a large surface area, in which the moisture evaporates quickly, the zui eventually shrinks to form a dry spherical particle powder.
(3) The granule powder is discharged. The formed spherical particulate powder gradually settles in the drying tower and is separated from the hot air, and the funnel cavity in the lower portion of the tower collects the particulate material and discharges it from the discharge port. The finer pellets are drawn together with the dry air by an extractor connected to the funnel-shaped upper portion into the dedusting system.

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