The Simpson Pro-Claim uses air as the motivating force and the sand grains themselves as the abrasive body. The sand, propelled by air, is accelerated at a controlled rate through an inside tube and scrubbed against sand trapped under a conical target. The sand/air mixture is established in the sand inlet mixing chamber. The feed rate entering the mixing chamber is controlled by the air velocity. Agglomerates are disintegrated and the impingement of grains against each other is sufficiently great to scrub off binder coatings on individual grains. The sand curtain, as it falls from the conical target is immediately exposed to exhaust air of sufficient velocity drawn through rectangular openings in an exhaust shroud that surrounds the target. This exhaust air removes the fines as they are created, the majority being exhausted at this time and not carried to the next cell, resulting in a higher reclamation rate.

The process is repeated through all the succeeding cells until the scrubbed sand emerges from the last cell and enters the final de-dusting chute and passes through the vibratory classification screen. The reclaimed sand is then discharged through an opening at the bottom of the discharge hopper, and the refuse is discharged over the end of the screen through a horizontal opening. The degree of cleanliness of the reclaimed sand depends on the retention time in the scrubber. The output is related to the number of cells in the series.

The Wesman Simpson Pro-Claim Sand Reclaimer is manufactured in India.