the nozzle facilitates the raw material of the granulation to be liquefied and atomized into the liquid droplet, spraying to the feed curtain, the liquid droplet and the movable particle are connected by colliding, coating and solidifying at the surfaces of the particles, the increscent particle drops into the heat exchanger, after heat exchangement, dropping into the bottom of the revolving drum, shoveled into the fluidized bed again, repeating the above process.

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