国内转炉一次烟气除尘技术及其发展方向

介绍了近年来国内转炉一次烟气除尘采用的技术,即传统OG法、新型OG法、半干法和干法除尘(LT法),总结了各种技术的应用发展情况、达到的效果及存在的问题,比较分析了各种技术的冷却方式和能源消耗的优缺点,着重阐述了干法除尘工艺节能和环保的巨大优势,指出了干法除尘为国内转炉烟气净化回收的发展方向。对进一步推广和应用干法除尘工艺有一定参考和借鉴作用。     

干法除尘在攀钢西昌基地200t转炉上的成功应用

攀钢西昌基地转炉一次除尘在借鉴攀枝花本部转炉一次除尘采用传统OG法、新型OG法的经验基础上引进了LT干法除尘技术,该除尘系统主要由蒸发冷却器、静电除尘器和煤气冷却器等组成.一年来攀钢西昌基地转炉干法除尘系统运行稳定、阻损小、费用低、净化效率高(烟气含尘量小于10 mg/Nm3),与湿法除尘系统相比取得了更好的经济效益和环境效益.     

宝钢分公司6#转炉干法烟气除尘系统运行分析

介绍宝钢分公司6#转炉干法烟气除尘系统(DDS)的基本设备情况和设计参数.6#转炉的干法烟气除尘系统在4#,5#转炉使用的基础上做了一些改进,如增大除氧水箱的容量和除氧能力,提高静电除尘系统中电场功率等等.为保证6#转炉干法烟气除尘系统的稳定运行,达到良好的除尘效果,分析了热负荷试车中的问题,并结合4#,5#转炉烟气净化系统的运行情况,指出了干法烟气除尘系统运行、维护的重点,提出相应的建议及优化措施.     

转炉热端烟气分析与干法除尘的综合应用

介绍了转炉热端烟气分析与干法除尘的基本原理,并详细介绍了热端烟气分析与干法除尘在开吹、二次下枪、加料、中途提枪,防泄爆等方面的综合应用,同时体现了热端分析周期短、投资低、效率高等特点,为转炉炼钢操作及干法除尘系统的稳定运行奠定了坚实基础。     

转炉干法除尘系统在双渣法下的运行分析

干法除尘系统的关键是温度和泄爆的控制。通过双渣法实验,分析了脱磷期与脱碳期转炉烟气的生成变化趋势及干法除尘系统对高温烟气的冷却控制效果。结果表明蒸发冷却器控制好转炉烟气温度与湿度,以及静电除尘器运行平稳是干法系统的关键。实验为西昌钢钒公司将投入使用的干法除尘系统前期热负荷试车收集基础数据资料,同时有助于明确提钒和半钢冶炼下采用干法除尘系统处理转炉烟气时运行和维护的重点。     

涟钢100 t转炉干法除尘工艺设计与应用

论述了涟钢100 t转炉干法除尘工艺设计与应用,对转炉一次烟气除尘技术作了比较,提出了将现有3座100 t转炉采用的OG湿法除尘和半干法除尘工艺改造为DDS干法除尘工艺的方案,针对干法除尘的技术难题作出有效的工艺设计,在实际应用中取得了显著效果。     

转炉LT干法除尘系统

介绍了转炉烟气净化除尘系统的发展，重点论述了转炉ＬＴ干法除尘系统的技术性能，经济技术指标和主要装备特点及发展前景。     

迁钢210t转炉煤气干法除尘工艺生产实践

首钢迁钢第二炼钢厂210 t转炉烟气净化采用干法除尘工艺,采取多项措施对工艺及设备进行了优化,有效地提高了转炉煤气干法除尘系统的安全性。     

250t转炉一次除尘方案比选及浅要分析

介绍了一次烟气干法除尘在邯钢新区250t转炉的应用实践，对干法和湿法除尘方案的发展历史、工艺流程、设备控制和使用效果等方面进行了对比分析，着重说明了各自方案特点及主要技术参数。     

300t转炉干法除尘设备维护实践

氧气转炉炼钢生产的除尘技术主要有湿法和干法两种。由于湿法净化回收系统存在着能耗高、二次污染的缺点,逐渐被干法除尘系统取代。首钢京唐300 t转炉烟气净化回收选择了干法除尘技术。针对300 t转炉干法除尘系统存在的设备故障和多发部位的问题,经过长期的摸索,找出了降低设备故障的措施,对部分备件进行了改进和国产化改造,保证了设备的稳定运行,降低了成产成本,提高了生产效率。     

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.