F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
39/34
F27B 17/00 (2006.01) B22F 3/15 (2006.01) F27B 5/04 (2006.01) F27D 1/00 (2006.01) F27D 11/02 (2006.01) H05B 3/64 (2006.01)
Patent
CA 1062005
ABSTRACT OF THE DISCLOSURE: This invention relates to a cylindrical elongated furnace for treating material at high temperature in a gaseous atmosphere under high pressure, of the type comprising a vertical, cylindrical pressure chamber capable of confining a gas under high pressure, a furnace chamber which is surrounded by a cylindrical heater which supports electrical resistor elements and an insulation, surrounding the furnace chamber and the heater, consisting of a cylindrical, insulating sheath with an insulating lid and bottom. This furnace is charac- terised in that the heater is built of ceramic elements form- ing a cylinder with annular channels for electrical resistor elements, and a support insulation, surrounding the ceramic elements and holding them together. The insulation has low gas-permeability and is built up of several layers of a tight felt which is impregnated with a hardening constituent thus achieving bounding between the layers.
250729
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