CAJ | 학술논문

钢渣中含有4%~35%的FeOx ,换算为金属铁含量为3%~10%。我国每年钢渣排放量超过1亿t,大量的Fe随着钢渣流失而未得到回收利用。若能将这部分铁元素还原回收,能够回收到大量的铁资源,且比仅考虑提高钢渣胶凝活性将其用于建材行业的低附加值利用具有更重要的意义。本文利用工业废渣煤矸石作为还原材料,选取热焖工艺高碱度低铝质韶钢钢渣,在试验室1500℃下高温熔融还原回收Fe。研究结果表明：利用煤矸石熔融还原回收钢渣中的Fe是可行的,掺25．7%煤矸石试样还原回收粗铁的品位高达82．45%。
강사중함유4%~35%적FeOx ,환산위금속철함량위3%~10%。아국매년강사배방량초과1억t,대량적Fe수착강사류실이미득도회수이용。약능장저부분철원소환원회수,능구회수도대량적철자원,차비부고필제고강사효응활성장기용우건재행업적저부가치이용구유경중요적의의。본문이용공업폐사매안석작위환원재료,선취열민공예고감도저려질소강강사,재시험실1500℃하고온용융환원회수Fe。연구결과표명：이용매안석용융환원회수강사중적Fe시가행적,참25．7%매안석시양환원회수조철적품위고체82．45%。
The steel slag contains 4% ~35% FeOx , ap-proximately 3% ~10% about Fe. More than 100 million tons steel slag is discharged every year. A large amount of Fe within slag has been loosed and without recycled. If we can deoxidize the FeOx and recycle Fe from steel slag, a large number of iron resources will be recycled and it has more significance than only improve cementitious activity of steel slag. This paper utilizes waste materials as adjusting material of coal gangue with deoxidi-zing ability, and chose hot stuffy technology processed high al-kalinity and low aluminum steel slag from Shaoguan Iron. In the lab, we melt samples in 1 500 ℃, deoxidize the FeOx and recy-cle Fe, and simulate water quenching process form slag struc-ture. Recycle the Fe from steel slag. The results show that: u-sing coal gangue and low-quality fly ash smelting steel slag de-oxidizing the FeOx and recycle Fe in high temperature is practica-ble. The Fe content with recycled iron from the sample of steel slag of Shaoguan Iron mixed with 25. 7% coal gangue is 82. 45%.