Powder feeding device, blasting system, and method for manufacturing electrode material

A powder feeding device, comprising:

• a storage tank that stores powder;
• a disk-shaped powder feeding disk that has on the upper surface side of a periphery thereof a receiver that receives powder stored in the storage tank;
• a rotary driving unit that rotary-drives the powder feeding disk around the rotation symmetric axis of the powder feeding disk;
• a cover member that covers a part of the powder feeding disk, and forms a gap between the cover member and the powder feeding disk so that the powder received by the receiver can pass through the gap according to the rotation of the powder feeding disk;
• a first gas feeding passage for feeding first gas to the gap;
• and
• a powder discharge passage that is connected with the gap and discharges powder cut out (separated) from the receiver in use of the first gas,
• the powder discharge passage and the first gas feeding passage being formed so as to face each other across the gap, and extend along the bottom surface of the receiver located in the gap.