Apparatus for and method of reclaiming used foundry sand

摘要

An apparatus for and method of reclaiming used foundry sand containing an organic binder comprising means (S2) for separating a mass of said sand from a casting, sand supply means (11, 50 51) to supply the separated sand to a heating station (16), a plurality of heating elements (21) at the heating station (16) to heat the sand to an elevated temperature, fluidising means (22) to introduce combustion supporting gas into the sand at the heating station (16) at a plurality of locations to fluidisethe sand, sand passage means (60) to pass the heated sand to a treatment station (29), gas feed means (35a) to feed combustion supporting gas to the sand at the treat- mentstation (29) so as to continue the reclamation of the sand utilising heat applied to the sand at the heating station (16), and means (35a) for removing reclaimed sand from the treatment station (29).