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    • 6. 发明专利
    • Refining device
    • 精炼装置
    • JPS59190312A
    • 1984-10-29
    • JP6501683
    • 1983-04-13
    • Nippon Steel Corp
    • SEKI MASAHIKOTAKEDA MASAFUMINAKATANI HIROSHI
    • C21C5/52C21C5/56C21C7/00
    • C21C5/565Y02P10/216
    • PURPOSE:To provide an increase in the efficiency of a refining device and a decrease in heat radiation loss and electric power loss by using a ladle type furnace body on a horizontally movable carriage in performing preheating, melting in an electric furnace and refining of scrap. CONSTITUTION:Scrap 4 is charged into a ladle 1 in a way as to leave a circular gas in the central part. The space in the upper part of the ladle is hermetically closed with a preheating cap 6 and the scrap is heated by the heat gas of a burner 5 and the heat gas is discharged through an evacuating port 7. The cap 6 and the burner 5 are moved upward upon ending of the preheating and are disconnected from the ladle 1. The ladle 1 is then moved quickly by a carriage 3 to the place of an electric furnace melting device. A cap 8 and an electrode 9 are thereupon lowered and melting is started immediately. The waste gas from the electric furnace is discharged through an evacuating port 11. A cap 12 is mounted airtightly to the ladle 1 in the place of a secondary refining device, and the inside of the ladle is evacuated through an evacuating port 13 to effect vacuum degassing; at the same time, quicklime, etc. are blown through an injection lance 14 into the molten steel, by which the molten steel is refined.
    • 目的:通过在水平移动的托架上使用钢包式炉体,在电炉中进行预热,熔化和精炼废料,提高精炼装置的效率,降低散热损失和电力损失。 构成:废料4以一种在中心部分留下圆形气体的方式装入钢包1中。 钢包上部的空间用预热盖6密封,废料由燃烧器5的热气加热,热气通过抽气口7排出。盖6和燃烧器5是 在预热结束时向上移动并与钢包1断开。然后,钢包1通过滑架3快速移动到电炉熔化装置的位置。 盖8和电极9随后降低,立即开始熔化。 来自电炉的废气通过排气口11排出。将盖12气密地安装到浇包1以代替二次精炼装置,并且将钢包的内部通过排气口13排出以实现真空 脱气; 同时,生石灰等通过注射枪14吹入钢水中,由此钢水精炼。