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电弧炉用替代废钢的金属炉料的进展 总被引:2,自引:0,他引:2
直接还原铁、铁水、冷生铁、脱碳粒铁、碳化铁、复合金属料等替代部分废钢作为电弧炉金属炉料,不仅可解决目前废钢供应短缺,也有利于稀释废钢中有害残余元素,提高钢的质量,是电弧炉冶炼优质钢的必要条件。文中介绍了电弧炉用各种金属炉料的特点和使用效果。 相似文献
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电炉炼钢中直接还原铁的利用 总被引:4,自引:1,他引:4
1概况近20年来,直接还原铁发展很快,1995年全世界年产量3075万t,为1975年289万t的10.43倍(见表1),同期直接还原铁的产量占生铁产量的比例,巳从0.6%上升到595%。目前,全世界有27个国家,100多个工厂生产直接还原铁,产量最大的是委内瑞拉、印度、墨西哥和伊朗等国家 相似文献
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电炉炼钢原料及直接还原铁生产技术 总被引:1,自引:0,他引:1
中国电炉炼钢的铁源原料由废钢铁料、生铁块、热铁水、直接还原铁等组成。直接还原铁(DRI/HBI)是电炉冶炼纯净钢最佳的残留元素的稀释剂。直接还原是钢铁工业技术发展的重要方向,气基竖炉和煤基回转窑是成熟的直接还原工业化生产技术。中国直接还铁的生产仍处于起步时期,2008年产量约60万t,占世界总产量不足1.0%。直接还原铁在中国有广阔的发展前景,以国内铁矿资源为原料的氧化球团-煤制气-竖炉是中国发展直接还原铁的主要方向。 相似文献
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为了提高球团质量,充分发挥球团竖炉的生产能力,济钢球团厂对所用原料进行了优化选择。生产实践表明,原料结构的优化促进了产品质量的提高,竖炉利用系数1998年比1996年提高0.2t/m2·h,工序能耗降低了1.54kg标煤/t,增加收益847.55万元。 相似文献
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Xiaoling Li Liang Zhao Jiuju Cai 《Mineral Processing and Extractive Metallurgy Review》2018,39(1):50-58
As an energy-intensive industry, iron and steel production are suffering from the resource and environmental issues. Blast furnace—basic oxygen furnace (BF-BOF) process and electric arc furnace (EAF) process are the two most common routes of steel production. Therefore, it is very important to quantify the industrial metabolism for the two routes. In this work, material flow analysis is used to comparatively investigate the energy efficiency, material efficiency, and emissions intensity at the enterprise level. The results show that the total energy consumption and material consumption per ton of steel of the BF-BOF route are 2.8 and 11 times larger than those of the EAF route, respectively. In addition, the emission intensities of dust, CO2, SO2, NO2 and CO of the BF-BOF route are 7.7, 2.6, 92.6, 33.5, and 12.0 times greater than those of the EAF route, respectively. To achieve a more sustainable steel industry, some policy recommendations are put forward finally. 相似文献
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对直接还原铁 (DRI)性能及其在电弧炉冶炼的特性作了较全面的论述。了解和掌握其特性是发挥其优越性的关键 ,是发展特殊钢和纯净钢的重要途径。 相似文献
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《粉末冶金学》2013,56(4):207-216
AbstractIt can be regarded as proven that the PM production of structural parts for the processing industry is a forming method involving minimum utilization of energy and material. In the present paper, data on energy consumption are examined using industrial examples for the individual stages in the process. These stages are the production of the raw material, shaping, sintering, and secondary forming. On the subject of single and double sintering, two examples are given in each case of the economies attainable through the use of PM processes, and some ideas for further reductions in energy consumption are put forward. PM/0239 相似文献
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