Pneumatic Transport of Solids by a Blow Tank System

Characteristics of a Fluxo-type blow tank conveying system for solid materials are examined experimentally. The discharge weight flow rate of the materials is fixed only by the air velocity blown into the tank and it is independent of the free falling velocity of the solid particle. With the weight flow rate being kept constant, the conveying air velocity can be increased by adding air into the pipe at the immediate downstream of the tank. The difference of solids flow pattern in the tank between fine particles and granular materials is visualized by the use of a small scale model tank of semi-circular crosssection.