控制转炉炉壳蠕变变形

转炉采用镁碳砖炉衬后，炉壳温度急剧增加，炉壳的局部区域会发生永久变形。分析认为：炉壳的永久变形是由于蠕变变形引起，而不是塑性变形引起，给出了影响蠕变变形的因素，指出了控制炉壳蠕变变形的策略。     

转炉炉壳变形及其控制

大型转炉用镁碳砖炉衬后，炉壳温度可达４７０℃或更高，造成炉壳蠕变而变形。研究了转炉炉壳变形的状态及规律，分析了炉体机械应力、温度应力及膨胀应力。并通过蠕变实验预测炉壳的残余寿命。还介绍了改善及控制炉壳变形的整形技术和冷却技术。     

转炉炉壳采用汽雾冷却时的瞬态温度场及应力场研究

大型转炉用镁碳砖炉衬后,炉壳温度急剧增加,已超出炉壳材料的蠕变温度,造成炉壳蠕变变形.采用汽雾冷却技术可对转炉炉壳实施温度控制.利用有限元法模拟了炉壳实施汽雾冷却的瞬态温度场和炉壳瞬态应力场.     

转炉炉壳变形及处理措施的浅析

结合包钢CSP210 t转炉的托圈和炉壳修配改过程,借鉴国内外其它钢厂的宝贵经验,针对转炉炉壳蠕变变形问题,提出通过炉壳整形、改善炉壳材质及强化冷却炉壳来控制炉壳变形,保证炉壳与托圈的间隙,以提高炉壳使用寿命.     

宝钢转炉炉壳长寿实践

为了提高炉龄,高导热镁碳砖在转炉上得到了普遍使用,钢水向炉壳的热传导由此也大幅提升,使炉壳表面温度维持在高温区域,从而引起了转炉炉壳变形加剧,导致转炉炉壳使用寿命缩短,影响正常安全生产.概述了宝钢在转炉炉壳长寿方面所做的一些工作,包括炉壳整形、耐蠕变的炉壳钢板研制及炉壳冷却技术的开发,并讨论了这些技术的效果和局限性.     

重钢50 t转炉炉壳温度场及热应力分析

对重钢50t转炉进行了炉壳（炉身段）温度场及热应力分析,提出了通过加隔热层石棉板降低炉壳表面温度的方法,当石棉板的厚度为30mm左右时,就可以改善炉壳的温度场及应力分布状况,降低炉壳的蠕变变形。     

转炉炉壳的变形分析及延长炉壳寿命的措施

分析了转炉炉壳变形的原因,提出了采用炉壳强化冷却的措施来控制炉壳变形,延长炉壳寿命,实现转炉炉壳的长寿化。     

50 t转炉一维稳态温度场的分析与计算

对重钢50 t转炉进行了炉壳(炉身段)温度场分析,计算表明转炉隔热层石棉板的厚度为30 mm时,炉壳温度就能控制在360℃以内,低于炉壳材质的蠕变温度.     

汽雾冷却时转炉炉壳温度场的有限元分析

转炉炉衬采用镁碳砖后,炉壳温度大幅度上升,导致炉壳产生蠕变,利用汽雾冷却技术可对炉壳温度实施控制。以有限元为手段,利用ANSYS软件包,对具有大型复杂结构、复合传热和汽雾冷却等复杂工作状态下的转炉炉壳温度场进行了分析。合理配置了冷却时间、水流通量等冷却参数,达到了抑制炉壳蠕变的目的,从而为汽雾冷却炉壳系统设计和炉体维护技术提供了参考。     

转炉有效石棉板厚度的计算

对重钢 5 0t转炉进行了炉壳 (炉身段 )温度场分析 ,当石棉板的厚度为 30mm左右时 ,炉壳表面温度就能控制在炉壳材质的蠕变温度以内。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<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     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

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,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

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     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

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     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

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,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

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.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

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.     

Seven Rare Earth Projects Involving Close to 3 Billion Yuan Investment Landed In the HighTech Zone

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.