Blasting apparatus and method for blast processing

A method for blast processing a surface of work with an abrasive blasted from a blasting nozzle of a blasting apparatus including;

• a blast nozzle arranged to blast an abrasive on a surface of work;
• a nozzle case that forms an enclosure that surrounds the blasting nozzle, wherein the nozzle case includes a cover opposite the nozzle;
• the cover including a surface or airflow alignment that is parallel to the work surface, and a blast hole through which the abrasive blasted from the blasting nozzle passes;
• and a collecting case that surrounds and is arranged to cover an outer surface of the nozzle case, and includes a collecting passage disposed around the nozzle case, the method comprising:
• blasting the abrasive from the blasting nozzle on the work surface through the blast hole of the cover of the nozzle case that surrounds the blasting nozzle;
• striking the work surface with the abrasive;
• and
• collecting, by suction from the collecting passage, the abrasive, which has passed through a clearance provided between the surface for airflow alignment of the cover and the work surface.