Heat treatment of metal castings and in-furnace sand reclamation

Details Heat treatment of metal castings and in-furnace sand reclamation Heat treatment of metal castings and in-furnace sand reclamation

1996-09-16

1998-12-22

Kastler, Scott

Metal founding

Process

Including recycling of process material

164132, 266252, 148538, B22D 2900

Patent

active

058508660

ABSTRACT:
The method and apparatus for reclaiming substantially pure sand from a heat treating furnace; wherein a casting with sand core and/or sand mold, comprising sand bound by a combustible binder, attached thereto is introduced into the heat treating furnace; or, wherein portions of sand core and/or sand mold that are not attached to a casting are introduced into the heat treating furnace. Wherein, the reclaiming within the furnace is carried out, in part, by a fluidizer that promotes binder combustion by one or more process of agitating, heating, and oxygenating. Wherein, the characteristics of the reclaimed sand are selectively controlled by controlling the dwell time of the sand within the heat treating furnace.

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