To provide a raw material mixing apparatus of a particulate transporting apparatus by which good mixing action of a raw material can be obtained with simple constitution without providing an obstacle for enhancing convection.

The raw material mixing apparatus of the particulate transporting apparatus is provided with a raw material mixing hopper 1 respectively having a mixed raw material discharging part 10 at a center of a lower end part and an air suction tube 16 which is led to an air suction source at an upper part with a closed lid. The raw material mixing hopper is provided with an unmixed raw material introducing tube 13 for sucking out the unmixed raw material into the raw material mixing hopper by suction force of the air suction tube at an internal center in a vertical direction. An upper end part of the unmixed raw material introducing tube 13 is connected with an unmixed raw material charging tube 14 provided at an upper part of the raw material mixing hopper, a lower end part leaves a gap 15 where the sucked out unmixed raw material is sucked up into the raw material mixing hopper 1 and further is opened facing the mixed raw material discharging part 10. Thus good mixing action of the raw material can be obtained with simple constitution.

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