Flash Vaporization Dryer for Silica

Silica material introduction

Silica is a general term for white powdered X-ray amorphous silicic acid and silicate products, mainly precipitated silica, fumed silica, ultrafine silica gels and aerogels, but also powdered synthetic aluminum silicate and calcium silicate. Silica is a porous substance, the composition of which can be expressed as SiO2-nH2O, where nH2O is in the form of surface hydroxyl groups. It is soluble in caustic soda and hydrofluoric acid, insoluble in water, solvents and acids (except hydrofluoric acid). It is high temperature resistant, non-flammable, odorless, tasteless, tasteless, and has good electrical insulation.

Working Principle of Silica Flash Vaporization Dryer

Hot air from the inlet pipe with suitable jet speed from the bottom of the dryer into the mixing and crushing drying room, the material produces a strong shear, blowing floating, rotating effect, so the material is centrifugal, shear, collision, friction, and the particles, strengthen the mass and heat transfer. At the bottom of the dryer, the larger and wetter particles are mechanically crushed under the action of the stirrer, and the particles with lower moisture content and smaller granularity are entrained by the rotating airflow to rise, and are further dried in the rising process. As the gas-solid two-phase rotating flow. The inertia of the solid phase is larger than that of the gas phase, and the relative velocity between the solid and gas phases is larger, which strengthens the mass and heat transfer between the two phases, so the production intensity of the machine is high.