共查询到20条相似文献,搜索用时 265 毫秒
1.
2.
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
3.
4.
5.
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
6.
为降低全废钢量子电弧炉出钢氮含量、优化电弧炉冶炼性能、减少电弧炉冶炼碳排放量,通过对量子电弧炉喷吹工艺进行优化改进,采用CO2喷吹工艺替代原始喷吹工艺以实现上述目标。在150 t量子电弧炉上进行了大量CO2喷吹工艺试验,分别对比了改进工艺前后的电弧炉出钢氮含量、冶炼电耗、冶炼周期、碳排放等性能指标的变化趋势。试验结果表明:使用CO2喷吹工艺后,电弧炉出钢氮质量分数降低30.6×10-6、冶炼电耗降低5.6 kWh/t、冶炼周期缩短3.2 min、平均出钢碳氧积降低了4.4×10-4、渣中FeO质量分数降低了4.5百分点、碳排放降低8.4%。通过将CO2载气喷吹碳粉工艺与Ar+CO2动态混合底吹工艺结合应用于电弧炉炼钢中能够有效降低钢水出钢氮含量、冶炼电耗、碳排放量等性能指标,优化量子电弧炉喷吹工艺。 相似文献
7.
兴澄钢铁公司100 t直流EBT电弧炉高效生产实践 总被引:2,自引:2,他引:2
兴澄特钢100t直流。EBT电弧炉于1997年11月投产,变压器额定容量90MVA,年设计生产能力68万t,主要生产轴承钢,齿轮钢,高压锅炉管用钢,油井管用钢。2001年10月于电弧炉炉壁安装3套ACI PyreJet集束氧枪和2套PyrOx氧燃烧嘴,使冶炼通电时间由51min降至42min,冶炼周期由59min降至49min,电耗由327kWh/t降至281kWh/t,氧耗为52m^3/t。2002年10月采用40%~50%铁水热装工艺,通电时间进一步降至36min,冶炼周期44min,电耗177kWh/t,氧耗增至56m^3/t,年产量达110万t。 相似文献
8.
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
9.
10.
电弧炉炼钢时,废气与熔池和渣子接触,CO气体的温度接近钢水温度,整个过程基本由反应动力学条件控制,凭借吹氧可以在熔池上方进行二次燃烧。1台60t电弧炉2000多炉的二次燃烧的应用结果表明,当吹入氧气操作得当,二次燃烧对水冷炉壁、炉顶、电极寿命、3角区耐火材料寿命、金属烧损率均无影响,氧耗增加7.93m^3/t,电耗降低38kWh/t,冶炼周期可稳定缩短4min。 相似文献
11.
12.
13.
<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic 相似文献
14.
正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field, 相似文献
15.
《China Nonferrous Metals Monthly》2014,(10)
正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF 相似文献
16.
《China Nonferrous Metals Monthly》2014,(10)
正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure 相似文献
17.
《China Nonferrous Metals Monthly》2014,(10)
正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year, 相似文献
18.
《China Nonferrous Metals Monthly》2014,(12)
正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform. 相似文献
19.
正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness. 相似文献
20.
正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully. 相似文献