Introduction of white carbon and black materials:
Silica is the general name of white powdered X- - ray amorphous silicic acid and silicate products. It mainly refers to precipitated silica, gas phase silica, ultrafine silica gel and aerogels, as well as powdered synthetic aluminum silicate and calcium silicate. Silica is a porous substance. Its composition can be expressed by SiO2. NH2O, where nH2O exists in the form of surface hydroxyl groups. Soluble in caustic soda and hydrofluoric acid, insoluble in water, solvent and acid (except hydrofluoric acid). High temperature, non combustible, tasteless, odorless, good electrical insulatio

Working principle:
From the bottom of the dryer, the hot air enters the mixing and crushing drying chamber from the bottom of the dryer and produces a strong shearing, blowing and rotating effect on the material, so the material is microparticle by centrifugation, shear, collision and friction, which strengthens the mass transfer and heat transfer. At the bottom of the dryer, the larger and more wet pellets are mechanically broken under the action of the agitator. The particles with low moisture content and smaller particle size are increased by the entrainment of the rotating airflow, and further drying in the process of rising. The gas - solid two phases are rotated. The solid phase inertia is larger than the gas phase. The relative velocity between the two phases of the solid gas is larger, and the mass transfer and heat transfer between the two phases are strengthened.

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