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以铁浴终还原炉产生并重整的含H2和CO混合气体为还原气,采用自主设计的间歇振动式斜直管移动床反应器对不锈钢渣进行预还原,探索了不锈钢渣在中低温条件下进行固态还原磁选以初步分离不锈钢渣中有用金属的可能性,对处理后的不锈钢渣进行了毒性浸出.结果表明,在磁场强度200mT、振动/间歇比1:2、炉温700～750℃、CO/H2体积比1:4的条件下,可同时获得较高的磁性物产率、TFe品位和Fe回收率,分别为10.53%,49.33%和98.2%.处理后所得磁性物质中CaO,MgO,Al2O3,SiO2等杂质氧化物的总含量从80%降到40%以下,尾渣达到国家排放标准.
In the iron bath final reduction furnace produced and reformed gas mixture containing H2 and CO as reducing gas, the use of intermittent vibrating inclined bed straight tube moving bed reactor pre-reduction of stainless steel slag to explore the stainless steel slag in the low temperature conditions Under the condition of 200mT of magnetic field, 1: 2 of vibration / intermittence ratio, 700-750 of furnace temperature ℃ and CO / H2 volume ratio of 1: 4, the magnetic material yield, TFe grade and Fe recovery rate were 10.53%, 49.33% and 98.2%, respectively.After treated, the content of CaO, MgO, Al2O3, SiO2 and other impurities total oxide content from 80% to 40% or less, the tailings to meet national emission standards.