公开(公告)号：US4347614A

公开(公告)日：1982-08-31

申请号：US127279

申请日：1980-03-05

申请人： Yoshiyuki Nakamura ,  Seiichi Matsubara ,  Takashi Matsui ,  Taiji Kumagai ,  Taizo Senga ,  Tsutomu Fukutsu

发明人： Yoshiyuki Nakamura ,  Seiichi Matsubara ,  Takashi Matsui ,  Taiji Kumagai ,  Taizo Senga ,  Tsutomu Fukutsu

IPC分类号： C21C5/52 ,  C22C35/00 ,  H05B7/00

CPC分类号： C21C5/5264 ,  C21C5/52 ,  C22C35/005 ,  Y02P10/216

摘要： A gas having high CO content evolved at reaction zone in a ferrosilicon-refining electric furnace is burned and deflected to wipe transversely on the top level of the charged raw materials with the aid of air introduced near electrodes through an air pipe. The burning of the gas is so controlled that a content of oxygen in the burned gas is within a range of 12-17% by volume by controlling a volume of the air to be introduced near electrodes as well as a volume of air invading into the furnace through a poking window and a gap between a shell of the furnace and a heat-shielding hood above the furnace. The CO-rich gas which has heretofore been exhausted in vain from the furnace can now be used to preheat the charged raw materials and prevents the furnace from blocking due to formation of crusts at the top level of the charged raw materials. The exhaust gas is now less noxious, has a higher temperature that can be used for driving a turbine of a generator. High heat efficiency, high quality of ferrosilicon, useful electric power and less blocking troubles can be obtained in a simple and economical way.

摘要翻译： 在硅铁精炼电炉中在反应区放出的具有高CO含量的气体被燃烧并偏转以借助于通过空气管引入电极附近的空气横向擦拭带电原料的顶部水平。 气体的燃烧受到控制，通过控制在电极附近引入的空气的体积以及侵入到气体中的空气的体积，燃烧气体中的氧含量在12-17体积％的范围内 炉子通过捅窗和炉壳之间的间隙和炉上方的遮光罩。 迄今为止，已经从炉中排出的富含CO的气体现在可以用于预热加入的原料，并且防止由于在带电原料的顶层形成结壳而导致的炉堵塞。 废气现在较少有毒，具有可用于驱动发电机的涡轮机的较高温度。 以简单经济的方式可以获得高热效率，高质量的硅铁，有用的电力和较少的阻塞故障。

公开(公告)号：US4255184A

公开(公告)日：1981-03-10

申请号：US53480

申请日：1979-06-29

申请人： Yoshiyuki Nakamura ,  Seiichi Matsubara ,  Takashi Matsui ,  Taiji Kumagai ,  Taizo Senga ,  Tsutomu Fukutsu

发明人： Yoshiyuki Nakamura ,  Seiichi Matsubara ,  Takashi Matsui ,  Taiji Kumagai ,  Taizo Senga ,  Tsutomu Fukutsu

IPC分类号： C21C5/52 ,  C22C35/00

CPC分类号： C21C5/5264 ,  C21C5/52 ,  C22C35/005 ,  Y02P10/216

摘要： A gas having high CO content evolved at reaction zone in a ferrosilicon-refining electric furnace is burned and deflected to wipe transversely on the top level of the charged raw materials with the aid of air introduced near electrodes through an air pipe. The burning of the gas is so controlled that a content of oxygen in the burned gas is within a range of 12-17% by volume by controlling a volume of the air to be introduced near electrodes as well as a volume of air invading into the furnace through a poking window and a gap between a shell of the furnace and a heat-shielding hood above the furnace. The CO-rich gas which has heretofore been exhausted in vain from the furnace can now be used to preheat the charged raw materials and prevents the furnace from blocking due to formation of crusts at the top level of the charged raw materials. The exhaust gas is now less noxious, has a higher temperature that can be used for driving a turbine of a generator. High heat efficiency, high quality of ferrosilicon, useful electric power and less blocking troubles can be obtained in a simple and economical way.

摘要翻译： 在硅铁精炼电炉中在反应区放出的具有高CO含量的气体被燃烧并偏转以借助于通过空气管引入电极附近的空气横向擦拭带电原料的顶部水平。 气体的燃烧受到控制，通过控制在电极附近引入的空气的体积以及侵入到气体中的空气的体积，燃烧气体中的氧含量在12-17体积％的范围内 炉子通过捅窗和炉壳之间的间隙和炉上方的遮光罩。 迄今为止，已经从炉中排出的富含CO的气体现在可以用于预热加入的原料，并且防止由于在带电原料的顶层形成结壳而导致的炉堵塞。 废气现在较少有毒，具有可用于驱动发电机的涡轮机的较高温度。 以简单经济的方式可以获得高热效率，高质量的硅铁，有用的电力和较少的阻塞故障。