Casting metal and reclaiming foundry sand

Abstract From the Canadian patent

A method of reclaiming used foundry sand containing an organic binder comprising the steps of separating said sand from a casting supplying said, sand to a fluid bed, fluidising said sand in said fluid bed with combustion supporting gas introduced into said sand at a plurality of locations so that thesand remains in said fluid bed in a fluidised state at an elevated treatment temperature range to reclaim said sand and removing reclaimed sand from said fluid bed.