The influence of transport S/G ratio and gas velocity on the pressure drop for the horizontal pneumatic transport of two kinds of fine powders were investigated experimentally.

• 通过测定细粉粒在水平管中气力输送的最小压降输送气速，提出了在输送管和输送气性质一定的条件下，不同物料的最小压降输送气速与输送固气比及雷诺数的关联式。