B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
38/18, 148/36.2
B01J 8/18 (2006.01) B01J 8/32 (2006.01) C21D 1/28 (2006.01)
Patent
CA 1197981
ABSTRACT A method of heat treating articles utilizes a fluidized bed comprising a container containing a mass of refractory particles and having a porous base, a layer of such particles adjacent to the porous base being formed of heavier particles than the remainder of said refactory particles. A non-stoichiometric fluidizing and treatment medium is supplied to the underside of the porous base and flows therethrough into the mass of refractory particles at such a velocity as to leave the heavier particles unfluidized while fluidizing the remainder of the particles. A gaseous medium is also introduced into the container at a position above and spaced from the porous base, forming together with the non-stoichiometric fluidizing and treatment medium, a combustible mixture which is ignited to heat the mass of refractory particles to a temperature at which the non-stoichiometric fluidizing and treatment medium will carry out the desired heat treatment.
459508
Can-Eng Holdings Limited
Gowling Lafleur Henderson Llp
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