Dust curing device

Provided is a dust solidification device that suppresses sliding resistance of a rod. The dust solidification device comprises: a storage tank for storing dust; a molding member which is disposed at the lower part of the storage tank and in which a molding hole is provided such that dust in the storage tank flows into the molding member; and a first rod and a second rod facing each other, the first rod and the second rod being driven so as to move back and forth with respect to the inside of the molding hole, and the first rod including a rod tip portion and a rod base portion, the first rod and the second rod being driven so as to move back and forth with respect to the inside of the molding hole, and the first rod being driven so as to move back and forth with respect to the inside of the molding hole. An axial vertical cross-section of the rod front end portion of the first rod is larger than an axial vertical cross-section of the rod base portion of the first rod and smaller than an axial vertical cross-s