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江西钢厂1983年进行了转炉优钢化工作,转炉冶炼20管用钢7534.94吨,质量达到了电炉钢的水平。钢的含氮量仅为电炉钢的36%,钢中夹杂物总量与电炉钢相当。又由于采用了钢包吹氩的新工艺使钢质更加纯洁、均匀,提高了从荒管到成品的成材率近1%左右。 转炉冶炼20管用钢降低了能源消耗,提高了经济效益。原电炉钢的能耗折合成标准煤为326公斤标准煤/吨钢,转炉为63公斤标 相似文献
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一、前言氧气转炉能量平衡计算结果表明,转炉炉气含CO高达85%,炉气潜热为853.944MJ/t钢,富铁(TFe60%以上)烟尘为10~20公斤/吨·钢。六十年代初,日本开发了OG法。其后,氧气转炉煤气净化及回收工艺日 相似文献
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2007年我国产钢48924.08万吨(根据统计快报,以下同),同比增加6625.22万吨,同比增幅15.66%,占世界钢产量(13.4897亿吨)的36.27%,比2006年提高了2.48百分点,2007年我国产钢超过了世界排名2名至8名国家产钢总和(日本12020万吨、美国9721万吨、俄罗斯7222万吨、印度5308万吨、韩国5137万吨、德国4855万吨、乌克兰4283万吨, 相似文献
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周绍斋 《金属材料与冶金工程》1987,(4)
一、概述 1.问题的提出根据湖南省钢铁工业发展规划,湘钢“七五”期间产钢70万吨,“八五”期间产钢100万吨,分别于1988年和1993年提前实现。1号平炉改吹氧后,三座平炉将形成70万吨钢的生产能力。如何使钢变成材,是连铸坯一火成材,还是对初轧大加改造使锭成坯,再使坯成材;钢材品种如何扩大及发展;以及250线材车间如何改造等等,均急待决策。 2.历史回顾与生产简况湘钢原设计为年产钢200万吨的发展规模,三年经济困难时期后,调整为60万吨。轧钢有250线材车间和为其专供原料的700/ 相似文献
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“七五”期间,是我国钢铁工业蓬勃发展的五年,钢产量提前两年超额完成“七五”计划,1989年突破6000万吨,1990年产钢达6604万吨;钢铁产品品种结构大有改善,产品贸易稳步提高。与此同时,钢铁生产各项技术经济指标有了新的突破,节能降耗工作成绩显著。“七五”期间,通过开展系统节能,采用了各种节能新技术,使吨钢综合能耗由1985年的1.75吨标准煤下降到了1.62吨标准煤,其中重点钢铁企业的吨钢综合能耗已下降到1.2吨标准煤。五年间,冶金系统累计节约标准煤700万吨,取得了钢铁产量增长,能耗下降的好成绩。从节约金属的情况来看,“七五”期间成绩也是显著的,效益也是可观的。 相似文献
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实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。 相似文献
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<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
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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
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《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
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《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
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《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
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《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
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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