镁质铁矿球团在梅钢4070 m~3高炉应用实践
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摘要
与传统酸性球团相比,镁质球团冶金性能优良。为此,梅钢在4 070 m~3大高炉进行了镁质球团应用实践,结果表明,高炉采用镁质球团后,高炉风量(BV)、理论产量和焦比均有所提高,煤比降低;高炉使用镁质球团后平均燃料价格降低38 982元/d,平均铁水利润增加9779元/d,合计总收益为48 761元/d。
Compared with the traditional acid iron ore pellets, the magnesia pellets present superior metallurgical performances. Therefore,the application of the magnesia pellets was carried out for 4 070 m~3 blast furnace in Meisteel,and the results show that the blast volume,the theoretical yield and the coke ratio somewhat increase,while the coal ratio decreases. After the application of magnesia pellets in blast furnace,the average fuel price reduces by 38 982 RMB/day,and the average profit of hot metal increases by 9 779 RMB/day,and the total revenue is 48 761 RMB/day. Therefore,the significant economic benefits are obtained by using the magnesia pellets for blast furnace ironmaking.
Compared with the traditional acid iron ore pellets, the magnesia pellets present superior metallurgical performances. Therefore,the application of the magnesia pellets was carried out for 4 070 m~3 blast furnace in Meisteel,and the results show that the blast volume,the theoretical yield and the coke ratio somewhat increase,while the coal ratio decreases. After the application of magnesia pellets in blast furnace,the average fuel price reduces by 38 982 RMB/day,and the average profit of hot metal increases by 9 779 RMB/day,and the total revenue is 48 761 RMB/day. Therefore,the significant economic benefits are obtained by using the magnesia pellets for blast furnace ironmaking.
引文
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[11]段冬梅,何明杰,胡志刚,等.球团矿添加氧化镁粉工业性试验[J].浙江冶金,2007(1):40-43.
[2]王海风,裴元东,张春霞,等.中国钢铁工业烧结/球团工序绿色发展工程科技战略及对策[J].钢铁,2016,51(1):1-7.
[3]王晓哲,张建良,刘征建,等.低硅含镁球团矿还原行为研究[J].烧结球团,2018,43(1):44-49.
[4]Dwarapudi S,Sekhar C,Paul I,et al.Effect of fluxing agents on reduction degradation behaviour of hematite pellets[J].Ironmaking and Steelmaking,2016,43(3):180-191.
[5]Semberg P,Andersson C,Bjorkman B.Interaction between iron oxides and olivine in magnetite pellets during reduction to Femet at temperatures of 1000-1300℃[J].Isij International,2013,53(3):391-398.
[6]于淑娟,于素荣,黄永君,等.改善鞍钢球团矿冶金性能的研究[J].烧结球团,2007,32(3):13-16.
[7]甘敏,范晓慧,陈许玲,等.钙和镁添加剂在氧化球团中的应用[J].中南大学学报(自然科学版),2010,41(5):1645-1651.
[8]青格勒,王朝东,侯恩俭,等.低硅含镁球团矿抗压强度及冶金性能[J].钢铁研究学报,2014,26(4):7-12.
[9]Pal J,Arunkumar C,Rajshekhar Y,et al.Development on iron ore pelletization using calcined lime and Mg O combined flux replacing limestone and bentonite[J].ISIJ International,2014,54(10):2169-2178.
[10]吴钢生,边美柱,沈峰满.碱性含镁球团矿的应用及合理炉料结构研究[J].钢铁,2006,41(12):19-21.
[11]段冬梅,何明杰,胡志刚,等.球团矿添加氧化镁粉工业性试验[J].浙江冶金,2007(1):40-43.