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    • 30. 发明公开
    • VERFAHREN ZUR REDUKTION VON CR AUS CR-HALTIGEN METALLURGISCHEN SCHLACKEN
    • VERFAHREN ZUR减少VON CR AUS CR-HALTIGEN METALLURGISCHEN SCHLACKEN
    • EP1747297A1
    • 2007-01-31
    • EP05738346.5
    • 2005-05-18
    • Holcim Ltd.
    • TSCHUDIN, Markus
    • C21B3/04C21C5/00C21C5/35C21C5/36C21C5/54C21C7/00C22B7/04
    • C21B3/04C21C5/005C21C5/36C21C7/0025C21C2005/5276C22B5/10C22B7/04C22B34/32Y02P10/214Y02P10/216Y02P10/23Y02W30/542
    • The invention relates to a method for reducing the chrome content in metallurgical slags, whereby the slags are fed in liquid form into an iron bath and Cr reduction occurs with the aid of the iron bath with a C content of 2 to 4 weight percent, wherein a) the Cr-containing slag with a Cr content of 2 to 20 weight percent is fed into an iron bath with a C content of less than 1 weight percent, whereupon b) the carbon content of the iron bath is raised to approximately 2 to 4 weight percent by adding C carriers and simultaneously supplying energy, c) the liquid slag with a Cr content of approximately 0.1 weight percent is tapped after Cr reduction, d) a cooling medium, preferably scrap, is added to the iron melt and the C content of the melt is lowered to less than 1 weight percent and e) part of the liquid Cr-containing melt is tapped while the remainder is preserved in liquid form in the converter for the treatment of subsequent melts.
    • 本发明涉及一种用于降低冶金炉渣中铬含量的方法,其中炉渣以液态形式供给到铁浴中,并且借助于C含量为2至4重量%的铁浴进行Cr还原,其中 a)将Cr含量为2至20重量%的含Cr炉渣加入C含量小于1重量%的铁浴中,随后b)将铁浴的碳含量升至约2至 通过加入C载体并同时供应能量为4重量%,c)在Cr还原之后,将Cr含量为约0.1重量%的液态炉渣分流出,d)将冷却介质,优选废料加入到铁熔体中,并将​​C 将熔体的含量降低至小于1重量%,和e)将部分含液体的含Cr熔体进行轻叩,而将其余部分以液体形式保存在转炉中用于处理随后的熔体。