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1. 发明授权

US4568279A Muffle furnace for continuous heat treatment 失效
标题翻译：马弗炉用于连续热处理
公开(公告)号：US4568279A
公开(公告)日：1986-02-04
申请号：US708519
申请日：1985-03-05
申请人： Michel Logue , Maurice Sadzot
发明人： Michel Logue , Maurice Sadzot
IPC分类号： C21D9/00 , F27B5/00 , F27B9/00 , F27B9/10 , F27B11/00
CPC分类号： C21D9/0043 , F27B5/00 , F27B9/10
摘要： This invention relates to a muffle furnace, for continuous heat treatment during passage of material therethrough, of products, the production cycle of which includes a treatment of predetermined duration at a temperature which may be about 1100.degree. to about 1150.degree. C., which furnace is heated by a flame producing burner without the combustion gases directly contacting the products to be treated. This furnace comprises: an inlet zone provided with a means for preheating, by circulating recycled combustion gases in a double casing provided around the muffle; a heating zone, provided inside a heat-insulated chamber provided with at least one means for circulating combustion gases around the heating zone of the muffle; and an outlet zone provided with at least one means for controlling the cooling rate of the treated product. For the heat treatment of refractory or carbon-containing products, impregnated with a carbon-containing material such as pitch, the pyrolysis of which produces combustible vapors, the heating zone is divided into three sections by means of an additional partition: a zone for exuding and removing volatile materials from the pitch; a zone for pyrolyzing and carbonizing the pitch; and a final firing zone.
摘要翻译：本发明涉及一种马弗炉，用于在材料通过期间进行连续热处理的产品，其生产周期包括在约1100℃至约1150℃的温度下处理预定的持续时间，该炉被燃烧燃烧器加热而燃烧气体不直接接触待处理的产品。该炉包括：入口区，设置有用于通过在马弗管周围设置的双壳体中循环再循环的燃烧气体来预热的装置; 加热区，设置在隔热室内部，该隔热室设有至少一个用于在马弗管的加热区周围循环燃烧气体的装置; 以及设置有至少一个用于控制被处理产品的冷却速度的装置的出口区。对于用含碳材料如沥青浸渍的难熔或含碳产品的热处理，其热分解产生可燃蒸气，加热区通过另外的隔板分成三个部分：用于渗出的区域并从沥青中除去挥发性物质; 沥青热解和碳化区域; 和最后的射击区。

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