A Circulating Fluidized-Bed (CFB) with an internal nozzle and a partition wall was proposed. The technique of fluidization is related to operations first used commercially in the fields of metallurgical and mechanical engineering such as the heat treatment of metals and power station combustors. In the modified CFB, an internal nozzle and a partition wall were additionally set in the main bed. This cold mode CFB apparatus made of acrylic resin; the main bed is 1,500㎜ high and 100㎜ in the inner diameter, the internal nozzle is 130㎜ high and 10㎜ in the inner diameter, and the partition wall is 7㎜ thick and 100㎜ in the diameter. Glass beads of 89㎛ in the mean diameter were employed as bed materials.