| 摘要 |
<p>This invention relates to a cylindrical elongated furnace for treating materials at high temperature in a gaseous atmosphere under high pressure, of the type comprising a vertioal cylindrical pressure chamber capable of confining a gas. under high pressure, a furnace space surrounded by a cylindrical heater, an insulating sheath, surrounding the furnace space and the heater, which is built up of a number of metal tube and an insulation applied between these, and an insulating lid and an insulating bottom at the ends of the insulating sheath. This furnace is characterised according to the invention in that the insulating sheath contains a metal tube which is provided at its lower part with a number of slots.</p> |
