拆炉机转炉清渣作业时液压油温的控制与改善

本文从拆炉机转炉清渣的实际工况条件出发,研究了造成其故障频繁的主要原因,从阻止热传递与加强液压系统油温扩散两方面制定了改善措施,取得了良好的效果。     

工业窑炉液压系统的发热与散热

工业窑炉液压系统的压力、容积和机械损失构成了总的能量损失,这些能量损失都将转化为热量,使系统的油温升高,从而使油液的物理性能发生变化,影响液压系统的正常工作.为保证系统的良好工作性能,应进行系统的发热和散热计算,并采取措施,选择合适的加热器和冷却器,使油液温度保持在允许的范围内.     

石墨化电阻炉节能技术

我国石墨化电炉基本上都采用爱契逊石墨化电炉,从设计上大多仅仅考虑到炉子必须非常牢靠地保证石墨化电炉工艺要求(即使炉芯坯料在终炉时炉温达到2500℃以上),人们担心炉子散热损失大,往往采用厚炉底,厚炉墙(端墙)和厚保温料。这种设计一直延用至今,虽然这种设计从工艺上确保炉芯温度2500℃的保温要求,但却使石墨化电炉工作时电热损失增大,使石墨电极电耗的增大。从实际石墨化电阻炉热平衡测试计算数值中可以看出炉子蓄热损失和保温料蓄热损失所占的比例。如兰州炭素厂α—8#炉,该炉炉体蓄热损失为74.8×10~6KJ,占热支     

16t工频无心感应熔铜炉

苏州铜材有限公司于1992年从澳大利亚的一家停业工厂购到一套铜板坯熔铸设备,其中包括一台16t工频无心感应电炉;一台液压传动立式拉铸机;一台振动加料车;一套除尘设备;一套供拆炉用的液压推出机构。经过将近一年时间的安装、调试和完善工作,于1993年11月上旬开始试生产,成功地拉铸出第一批黄铜板坯,坯最长达7.8m,     

冶金钢渣罐翻罐打锤机改造方案

文章简述了通过对翻罐打锤机的改造,实现了渣罐的提升、翻罐和打锤的作业等,以保证钢渣罐的及时返空.并对翻罐打锤机的提升、走行功率和安全稳定性能进行了计算以及技术分析.     

珠钢2^#电炉液压系统的特点及维护方法

珠钢2#电炉液压动力充沛、功率余量充足、设计周密,配备用于防止设备事故的应急操作系统.本文指出了正确选用液压油、液压管材质和密封件是维护好珠钢2#电炉液压系统的关键.     

跳钢机液压系统油温过热原因分析与处理

本文介绍了液压系统油温过热危害,分析了棒一线跳钢机液压系统油温过热的原因,通过采取相应措施后,油温过热得到了解决。     

钛渣熔分电炉炉衬结构设计探讨

对比分析传统保温式炉衬和新型强化散热冷凝式炉衬的结构特点,提出采用冷凝式炉衬能够有效解决钛渣熔分电炉炉衬使用寿命的问题。计算了钛渣熔分电炉采用冷凝式炉衬炉墙的温度梯度以及热流密度,以25 500 k VA钛渣熔分电炉为例,相比保温式炉衬的维修费及停炉损失,冷凝式炉衬增加的2.4%散热损失可以接受。给出一种冷凝渣壳层最小厚度的确定方法,计算得出镁砖材质冷凝式炉衬厚度为600 mm时,钛渣渣壳层厚度最小为109 mm。     

遥控液压打渣机在有色冶金工业中的应用

一种遥控液压打渣机越来越多的应用到我国有色冶金工业的炉窑维修中,它改变了传统的炉窑维修方式,带来了拆除效率和作业安全上的提升.本文回顾总结了有色冶金炉窑维修装备的历史,阐述了遥控液压打渣机应用的特点和优势,指出遥控液压打渣机在有色冶金炉窑的维修中的广泛应用将是发展方向.     

24000kVA硅锰电炉的设计及实践

本文介绍了新设计投产的24000kVA 硅锰合金电炉的基本情况和设计上的主要特点。电炉由3台8000kVA 单相变压器供电,原料进行预处理,自动化上料,布料合理,电极动作全部采用液压,出铁使用开堵眼机操作,设有烟气除尘系统。该炉投产半年来生产稳定,效果良好。     

China's Major Non-ferrous Metals Imports & Exports

正~~     

Zinc Production by Province in 2014

正~~     

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.