Dust curing system and dust curing method

The moldability of the collected dust is improved. A dust solidification system (1) is provided with: a dust pre-collection unit (2) that sucks dust by means of negative pressure generated by a negative pressure generation source, removes solidification obstructions from the dust, and causes the dust to flow in the direction of the negative pressure generation source; a dust catching mechanism (31) for catching and dropping dust flowing from the pre-dust-collecting member by negative pressure; a storage tank (33) for storing the dust; and a dust solidification mechanism (35) for solidifying dust in the forming chamber, the dust solidification mechanism (35) including at least one of a dust re-scattering prevention mechanism (32) for preventing dust falling from the dust capturing mechanism from scattering again, a stirring mechanism (34) for stirring dust introduced into the dust solidification mechanism, and a deflation mechanism (36) for deflating the dust from the dust capturing mechanism. The deflation me