世界直接还原铁未来发展前景

从世界范围内看，由于受电炉钢产量日益增长的影响．严重不足，使得直接还原铁的需求量未来还将会不断增长。产量也将会继续增长。电炉钢需要生产更高质量的产品，而高质量废钢的供给同时随着直接还原铁生产技术逐步成熟，直接还原铁的     

国外直接还原铁的发展概况

近年来,世界电炉钢产量的迅速增长导致废钢供应吃紧,尤其是生产优质钢所用低杂质废钢更为紧俏,因此电炉炼钢厂家努力寻求废钢替代物,从而促进了直接还原铁和热压块铁产量的提高和技术的发展。1 直接还原铁需求日益增加 1997年世界直接还原铁产量为3620万t,比1996年的3330万t增加9％。据巴西CVRD     

直接还原铁相对废钢的价值

直接还原铁的主要市场是电炉炼钢,所以它的价值通常与废钢对比。直接还原铁对废钢的相对价值要考虑以下几个因素。一、化学成分对炼钢来说,直接还原铁的最大价值是生产高质量的钢种,诸如扁平产品(钢板、钢带、扁钢)、无缝钢管、高质量拉拔钢丝、冷顶锻钢捧、特殊条形品种。这时,电弧炉操作对原材料和最终产品中的杂质元素如Cu、Sn、Mo、Cr、Ni、S、P等有极严格的要求。表1是不同等级碳素钢中杂质元素的通用极限。与之相对,表2是不同等级废钢和直接还原铁中杂质元素的含量。这两个表揭示了直接还原铁作为电炉炼钢稀释剂的价值——即用低质量废钢可以生产高质量的钢。     

直接还原铁在电弧炉炼钢中应用

据预测到2000年我国的电弧炉用废钢将出现较大缺口。可能的对策有：（1）进口废钢和直接还原铁；（2）国内建设直接还原铁厂；（3）使用冷生铁；（4）铁水热装。本文从电炉炼钢的技术经济指标和钢质量等方面，论述了直接还原铁及其它金属炉料的使用特点。     

用直接还原铁生产优质钢的经验介绍

用直接还原铁生产优质钢的经验介绍本文介绍国外三家电弧炉炼钢厂使用直接还原生产优质线棒材和板带用钢的经验。一、乔治城钢公司美国乔治城纲公司是一家电炉炼钢厂。该厂使用直接还原铁生产优质线捧材产品，是美国最大的加工轮胎缘和预应力混凝土钢绞线用线材的供货商。...     

电炉用部分替代废钢的金属炉料

介绍了电炉用各种金属炉料的特点和使用效果。结果表明,铁水、直接还原铁、碳化铁等部分替代废钢作为电炉金属炉料,不仅能解决废钢供应短缺的问题,还有利于提高钢的质量。     

110t电弧炉应用直接还原铁炼钢效果分析

通过110t电炉应用直接还原铁炼钢效果的对比分析，阐述了加入直接还原铁对电炉钢中的残余元素（Cr、Ni、Cu）及氮含量、冶炼时间、冶炼电耗、金属收得率、电炉钢水成本等产生的各种影响，认为直接还原铁可做为优良的电炉炼钢原料用于品种钢的生产。     

150t超高功率电弧炉使用直接还原铁的实践

石油管材对钢中残余及有害金属元素（Ｎｉ、Ｃｒ、Ｍｏ、Ｃｕ、Ｓｎ等）含量要求严格，设计的电炉炉料配比方案有１００％废钢，５０％废钢／５０％ＤＲＩ和８０％废钢／２０％ＨＢＩ３种。炼钢厂自１９９２年投产以来，电炉炼钢一直使用一定比例的直接还原铁为原料，至１...     

煤基直接还原20年

在过去20年中,所有SL/RN法工厂共生产了4.6Mt高金属化率的直接还原铁和7.6Mt预还原铁。由于SL/RN法操作的可靠性,使工厂的作业率不断提高,致使SL/RN法得到广泛的承认。SL/RN直接还原铁基本上作为优质含铁料与废钢搭配用于电炉炼钢,也可用于其他炼钢方法。     

走向商业化生产的直接还原炼铁新工艺

一、概述直接还原炼铁是一种不熔化即将铁矿石中氧化铁还原成金属的生产工艺。１８世纪末提出了直接还原法的设想，２０世纪６０年代开始得到发展，有多种工艺进行商业化生产，其中采用最普遍的是以天然气为还原剂的MIDREX及HYL法以及以煤为还原剂的回转窑法等。随着世界钢产量增长，电炉钢比扩大，对直接还原铁的需求也日益增多，除了数量上原因外，部分采用直接还原铁为原料，可以减少废钢中有害杂质对钢质量的负面影响。１９８０年全世界直接还原铁（DRI）产量为７１３万t，占世界生铁产量１．４％，２０００年世界DRI产量４６２０…     

Acceleration of Electricity Reform Brings Benefit to Big Electricity Users,Aluminum Manufacturers Can Save Costs Up to Several Hundred Million

<正>Recently the National Commission of Development and Reform again assembled experts to solicit opinions,and discussed new electricity reform program.According to information disclosed by experts attending the meeting,in the future electricity reform will undergo top-down design,possibly a     

Qinghai's Aluminum Processing Capacity to Rise at the End of the Year

正Since the release of Implementation Opinions on Carrying out‘Guiding Opinions of the State Council on Resolving Serious Production Overcapacity Conflicts’,according to the actual situation of industry,Qinghai has focused on electrolytic aluminum,cement,ironsteel(including iron alloy and silicon carbide),     

Recent Trends in China's Copper Scrap Market-Part Ⅱ

<正>2.Tianjin Scrap Metal Market In Tianjin,we mainly visited Jinghai Ziy Town scrap market and Binhai New Area’some copper scrap enterprises and enterprise using copper scrap.In Ziya we felt the coppe scrap market was particularly deserted,mos copper scrap enterprises in the town wer closed,industry insiders said in 2012 the plac here was bustling with activity.According to     

Shanghai Clearing House to Roll out Renminbi-denominated Copper Clearing Operations in Free Trade Zone

正Clearing House Financial Markets Co.,Ltd.(Shanghai Clearing House)General Manager Xie Zhong told the media recently at the briefing of the international symposium of"Reform Deepening and Mechanism Innovation of the Post-crisis Kerb Market",Shanghai Clearing House will explore the feasibility of carrying out bond business in     

Development and Application of New Materials for Copper Processing in China

正After over 60 years of developmnt,a system for RD and production of copper processing materials has already taken shape in China.After the reform and opening-up,the application of copper processing materials has gradually expanded from the military industry to civil field.The annual output of copper     

China’s Mineral Exploration Market Downturn Causes Decline of Investment in Bauxite

<正>According to a survey report conducted recently by China Geological Survey Development Research Center,in the first half of 2014,China’s mineral exploration market continued to decline,with the investment in exploration of non-fuel minerals dropping by13.7%and drilling workload dropping by21.7%.According to statistical analysis of the Center,     

Chinalco and China National Administration of Coal Geology Jointly Built Guangxi Rare Earth Industrial Base

正On June 3,Chinalco and China National Administration of Coal Geology signed cooperation agreement for strategic cooperationcooperation agreement between Chinalco Guangxi Nonferrous Rare Earth Development Company and Xuzhou Jin Shi Pengyuan Rare Earth Material Factory.According to the agreement,both sides would jointly support Chinalco Guangxi Nonferrous Rare Earth Development Company and Xuzhou Jin Shi Pengyuan Rare Earth Material Factory to carry out comprehensive cooperation covering rare     

Aluminium Production by Province or City in 2014

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Fabricated Copper Production by Province or City in 2014

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Zinc Production by Province in 2014

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