脱湿鼓风技术在中天钢铁1580m3高炉的应用

针对中天钢铁1580m³高炉鼓风湿度波动大的状况,采用了脱湿鼓风技术。8号、9号高炉应用实践表明,脱湿效果明显,鼓风湿度正常稳定在9～11 g/m³,最低为8g/m³,风口前理论燃烧温度稳定在2290℃左右。与脱湿鼓风前相比,日产量增加78.26t/d,焦比降低3.21 kg/t,煤比上升7.62kg/t,燃料比下降16.33kg/t,煤气利用率提高1.46个百分点。高炉采用脱湿鼓风技术,对提高入炉风量,稳定理论燃烧温度,以及提高煤比、降低焦比、增加日产量等,起到了一定的促进作用,但也带来了鼓风机吸入侧机壳、管壁结露的问题,为避免腐蚀,需要在相应位置加设保温层。     

锰铁高炉富氧鼓风的初步实践

本文介绍了富氧鼓风在255m~3锰铁高炉上的生产实践和应用效果。在富氧率3～4％范围内,富氧率提高1％,冶炼强度可提高8.11％,焦比降低2.88％。在现有富氧率条件下,未发现因风口前理论燃烧温度升高而影响高炉顺行。富氧后明显富化了煤气热值,降低了炉顶煤气温度。本文还初步探讨了锰铁高炉富氧鼓风的极限。     

新钢锰铁高炉使用进口锰矿的生产实践

新钢锰铁高炉使用进口锰矿始于1984年。目前，进口锰矿用量已占新钢锰铁高炉入炉锰矿总量的40％以上，为改善锰铁高炉技术经济指标、降低高炉锰铁成本、提高产品质量和企业经济效益发挥了重要作用。     

新余锰铁高炉减少入炉熔剂量增产节焦分析

减少入炉熔剂量是锰铁高炉增产节焦的重要途径。本文分析了新余锰铁高炉熔剂比高的原因及对高炉锰铁生产的影响,提出了减少入炉熔剂量的措施。     

锰铁高炉采用高富氧大喷吹技术

本文根据高炉采用富氧鼓风和喷煤技术的理论和实践,结合锰铁高炉冶炼特点,通过计算指出:在新余钢铁厂现有条件下,要既能充分发挥富氧鼓风技术的优势,又能保持风口前最佳理论燃烧温度,使高炉长期维持稳定顺行,富氧大喷吹技术能完满地达到这个目的。通过计算预测,如在新钢新建一台6000米~3/时制氧机、为三座255米~3锰铁高炉均衡供氧,可达到增产锰铁4.13万吨/年、节约焦炭3.43万吨/年、以煤代焦1.75万吨/年的效果。并从本质上解决了高炉冶炼锰铁“上热下凉”这一根本矛盾。因此、该技术将是新钢锰铁高炉技术改造的一项重要措施。     

广西康密劳锰铁高炉鼓风脱湿实践

鼓风湿度增加是锰铁高炉夏秋两季生产指标变差的根本原因。广西康密劳锰铁高炉鼓风脱湿的实践证明：鼓风脱湿对节焦、增产、提高回收率、降低成本具有显著作用。国内组装的脱湿装置能够满足锰铁高炉脱湿工艺的要求。     

富氧鼓风在高炉冶炼锰铁上的应用

前言高炉富氧鼓风是强化冶炼,降低燃料消耗的有效措施。首钢、鞍钢、上钢、本钢及马钢等企业利用炼钢余氧,在高炉冶炼生铁时采用富氧鼓风,取得较好效果。我国现有19座锰铁高炉,其产量占全国铁合金总产量的30%以上,由于各种原因锰铁高炉未能应用富氧鼓风。新余钢铁厂第一炼铁分厂曾于1982年和1983年在容积为255m~3的1~#、2~#锰铁高炉上断续进行富氧鼓风,取得了比冶炼生铁好得多的效果,为我国锰铁高炉改造、采用新     

锰铁高炉采用脱湿鼓风效果探讨

本文在概述国内外生铁高炉脱湿鼓风技术发展和脱湿鼓风对高炉冶炼影响的基础上,根据新余锰铁高炉生产实践,对脱湿鼓风节焦增产效果进行了分析计算。结果表明:按3座255m~3锰铁高炉在二、三季度(脱湿期)脱湿10.19g/m~3计算,全年节焦、增产、提高锰铁质量所获得的经济效益约为1500万元,效果十分显著。脱湿鼓风是该厂锰铁高炉技术进步发展方向之一。     

首钢高炉送风制度的基础研究

随着首钢高炉技术经济指标的提升,原用的送风制度经验公式已不适应于目前的冶炼条件。结合首钢高炉冶炼现状,对送风制度方面的高炉入炉风量、实际风速、鼓风动能及炉缸煤气量、理论燃烧温度、理论实际煤气流速、透气阻力系数等计算公式进行了重新量化,提出了简化算式,由此也深化了目前冶炼条件下对高炉送风制度现状的认识。     

新钢“七五”期间锰铁生产的技术进步及“八五”期间的设想

“七五”期间,原新余钢铁厂高炉锰铁平均日产提高16.4t,入炉焦比降低46kg/t,锰铁质量有所提高。本文在总结“七五”期间新钢锰铁生产技术进步的基础上,提出了“八五”期间扩大富氧量、进一步改善原料条件、完善操作制度、提高风温、改进炉型、延长高炉寿命及跟踪新技术等七个方面的措施建议。     

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.