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攀成钢70 t高阻抗超高功率偏心底电弧炉的炉料为20%铁水+80%生铁-废钢。在电弧炉的炉壁上安有3支RCB集束喷枪装置和炉门两侧墙上安有两处喷碳粉枪。冶炼实践表明,吹氧脱碳速度达0.08%~0.012%C/min,冶炼电耗为310.86 kWh/t钢,电极消耗1.67 kg/t钢,氧气消耗46.7 m3/t钢,冶炼周期56 min。 相似文献
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70 t电弧炉的炉料装入量为80~81 t,其中热直接还原铁热压块HBI为14.6~15.2 t,铁水23~27 t,其出钢量77~78 t,电耗316~324 kWh/t,氧耗29.7~33.0 m~3/t,冶炼周期48~54 min。生产实践表明,热压块是优质废钢的替代品,可促进电弧炉脱磷和脱碳反应,降低氧耗1.3~3.2 m3/t,但每增加1%热压块则增加电耗3.5kWh/t,所以炉料为全废钢时不宜配加热压块,当加入30%铁水和加入10%热压块时可以达到冶炼过程最优化。 相似文献
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淮钢70 t电弧炉PTI JetBOx系统的应用 总被引:1,自引:0,他引:1
淮钢70t电弧炉安装3套阿JetBOx集束射流氧枪系统后,冶炼周期降低3—5min,电耗降低25—40kWh/t,电极消耗降低0.4kg/t。 相似文献
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90tCONSTEEL电炉炼钢工艺的应用 总被引:1,自引:1,他引:0
CONSTEEL电炉炼钢的工艺优点是炉料适应性强,冶炼能耗低(冶炼电耗≤330kWh/t),除尘效果好,废钢预热效果较好(预热到600℃),电极损耗小(电极消耗≤1.65/kg/t)、炉冶炼时间短(51min),噪音小,生产环境改善,投资成本低、广东省韶关钢铁集团有限炼轧厂(以下简称我厂)3个月实践证明,在全冷料的情况下,最短冶炼时间为54min/炉,冶炼电耗为380kWh/t,在加入30%铁水情况下,最短冶炼时间48min/炉,冶炼电耗250kWh/t。 相似文献
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我国电炉钢生产现状及发展前景 总被引:1,自引:0,他引:1
我国电炉钢产量逐年上升,2007年已接近5 000万t,同时电弧炉容量趋向大型化,2007年≥50 t电弧炉产能约占电炉钢总产能的83.5%,电耗接近300 kWh/t,冶炼周期≤60 min,平均电极消耗2.43 kg/t,但炉料结构、生产钢种、节能环保等方面的技术开发仍需加大力度,未来我国电弧炉流程仍有很大发展空间。 相似文献
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I. Yu. Zinurov S. G. Ovchinnikov A. M. Shumakov V. Z. Fel’dman A. D. Kiselev 《Russian Metallurgy (Metally)》2013,2013(12):919-922
16 mln t steel were melted in 24 large electric arc furnaces (EAFs) in the metallurgical plants in Russia furnaces in 2011 at an annual capacity of 22 mln t of these furnaces. Among them, 17 EAFs are equipped with eccentric bottom tapping and operate with a “bog.” Three EAFs use the heat of effluent gases for heating of a charged scrap: a shaft heater at the Cherepovets metallurgical works (CherMK) and conveyer heating in the Ashinsk metallurgical plant. The DSP-120 furnace in CherMK has the best indices in Russia for operation with cast iron: electric power consumption of 260 kWh/t and a heat time of 49 min. Nine EAFs operating in metallurgical works use 20–30% liquid iron in a charge, which decreases the electric power consumption by 80–100 kWh/t. The working space and the EAF dimensions are important. A groundless decrease in the electrode failure diameter (1200 mm or smaller) leads to problems in the EAF transformer operation at a transformer power higher than 100 MVA and a secondary voltage higher than 1000 V. The performance of EAFs and the reliability of equipment operation depend on the working space height, the electric holder stroke, the distance between the axes of chair segments, the distance from the furnace axis to the axis of electric holder supports, and so on. Engineers in OOO NTP Akont determined the optimum sizes and relations between them for 120- to 130-t EAFs. 相似文献