| 摘要 |
<p>1,165,627. Charging electric arc melting furnaces. METALLGESELLSCHAFT A.G., STEEL CO. OF CANADA Ltd., and PICKANDS MATHER & CO. 22 Aug., 1967 [27 Aug., 1966], No. 38591/67. Heading F4B. In operating an electric arc melting furnace particulate sponge iron is charged peripherally of the furnace to a height lower than the ultimate slag level, followed by scrap, centrally into the bowl so formed, whereupon said scrap is melted. Further scrap is then charged into the centre and sprinkled with more sponge iron which enters the scrap interstices. By this system up to 90% sponge iron can be used in the charge without the formation of accretions on the furnace wall.</p> |
