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1. 发明授权

US4006284A Extended arc furnace and process for melting particulate charge therein 失效
标题翻译：扩展电弧炉及其中的微粒电荷的熔化过程
公开(公告)号：US4006284A
公开(公告)日：1977-02-01
申请号：US580839
申请日：1975-06-02
申请人： Robert Sidney Segsworth , Charles Benjamin Alcock
发明人： Robert Sidney Segsworth , Charles Benjamin Alcock
IPC分类号： C10G15/12 , B01J2/00 , B01J6/00 , C21B11/00 , C21C5/52 , C21C7/00 , C22B7/00 , C22B7/02 , C22C33/04 , F23G5/24 , F27B3/08 , F27B19/02 , F27D3/18 , F27D11/08 , H05B7/00 , H05B7/18 , H05B11/00
CPC分类号： H05B7/00 , C21C5/52 , F27B19/02 , F27D11/08 , F27D3/18 , Y02P10/216
摘要： The furnace and process disclosed herein comprise an extended arc furnace having at least one electrode with an axial opening therein through which an appropriate gas, such as argon, may be fed into the extended arc, and a substantially vertical reaction zone above the extended arc through which a particulate charge is fed by gravity into the extended arc zone and in its downward course through the reaction zone the particulate charge is heated and, if desired, a reaction such as reduction may be effected. The rate of gas flow upward in the reaction zone is slow enough to permit free falling of the particulate charge but fast enough to suspend the particles for the heating and reaction time desired. The axial electrode opening or openings are of a size to permit creation of a stabilized extended arc and to give reduced electrode consumption, improved current and voltage wave forms, and the furnace power may be modulated by changing either the rate of gas flow or the composition of the gas. The feeding of the gas internally into the arc gives the extended arc a stability not achievable by other methods of feeding the gas to the arc volume.
摘要翻译：本文公开的炉和工艺包括延伸电弧炉，其具有至少一个具有轴向开口的电极，通过该电极可将适当的气体（例如氩气）通过该电极供入到延伸的电弧中，并且在延伸的电弧通过的基本垂直的反应区域其中颗粒物质通过重力进料到延伸的电弧区域中，并且在其向下的过程中通过反应区域加载颗粒物质，并且如果需要，可以进行诸如还原的反应。在反应区中气体向上流动的速度足够慢，以允许颗粒物质自由下落，但足够快以将颗粒悬浮在所需的加热和反应时间。轴向电极开口或开口具有允许产生稳定的延伸电弧并且降低电极消耗，改善的电流和电压波形的尺寸，并且可以通过改变气流或组成的速率来调节炉功率的气体。将气体内部供给到电弧中，使得延伸电弧成为通过将气体供给到电弧容积的其它方法不能实现的稳定性。

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