废钢预热经济效益分析

本文概述了在电炉炼钢中节约能源的重要性和环保性,分析了电炉炼钢的能耗情况,对不同的预热形式进行了对比分析,并对分离式废钢预热形式的节能效益和影响因素进行了简单的分析和评估,提出了合理的废钢预热温度应该在1200度左右,采用废钢预热炼钢的工艺可取得较好的节能效果,大幅缩短冶炼时间,能够取得较好的经济效益。总之,预热废钢还可避免湿废钢入炉,从而避免炉内发生爆炸,废钢预热还能保证工厂安全及防止设备意外损坏事故,减少电炉炼钢的电力消耗及提高钢厂生产效率,对炼钢企业及社会效益都有重大的现实意义。     

电弧炉炼钢两种余热回收方式的比较

文章从已有的电弧炉炼钢的能量平衡关系出发，计算了利用废气余热预热废钢的节能率，并从能量数量、能量质量、综合效益等几个方面，对废钢预热和余热锅炉两种余热回收方式进行了比较，肯定了废钢预热技术的优越性。     

Consteel电弧炉炼钢工艺节能环保分析

Consteel炼钢工艺是一种节能效果显著的电弧炉炼钢新工艺,该工艺包括连续加料、废钢预热、超高功率供电、长弧泡沫渣、水冷炉壁、水冷炉盖、导电横臂、偏心底出钢、高阻抗、吹氧和氧燃助熔以及计算机控制等先进技术。从工艺出发,对Consteel工艺的各种节能技术进行了全面分析。分析结果表明,Consteel工艺是一种综合能耗低、综合效益好的炼钢工艺。     

电弧炉废钢预热技术的发展现状

废钢是电弧炉炼钢的主要原料,其入炉温度对电弧炉冶炼能耗等技术指标影响很大.提高废钢入炉温度,可有效降低电弧炉生产能耗和缩短冶炼周期.自弧炉炼钢技术诞生以来,很多废钢预热技术得到了发展,且均在一定程度上提高了废钢入炉温度,对于推动钢铁行业节能减排、绿色化发展具有重要意义.目前,配备废钢预热装置的电弧炉主要分为三类:双壳电弧炉、竖井式电弧炉以及连续加料电弧炉.本文针对电弧炉的废钢预热技术发展现状进行综述,探讨不同废钢预热技术的优缺点.     

电炉烟气预热废钢技术的发展及应用前景

1.前言利用电弧炉排出的高温烟气预热废钢,在日本巳成为炼钢节能的主要措施之一。近几年来,我国部分冶金科技工作者也在致力于该项技术的开发和研究。陕西钢厂自1985年初着手引进废钢预热装置,至今已两年多。其间对该项技术的发展与现状,技术诀     

铁水包废钢预熔预热新工艺在某钢铁公司的应用

近年来,随着国内废钢量的逐步增加,与国家相关部门提出的规划要求,国内外很多转炉炼钢厂都在努力增加转炉废钢的熔化能力以降低铁水消耗量。某钢铁公司针对现有4#转炉100t铁水包新建预熔预热处理工艺,使铁水包废钢比最高为8%,理论上实现降低炼钢铁水消耗约40kg/t。同时因为预熔预热后减少铁水温降,缩短了转炉冶炼所需要的时间,对企业实现节能减排起到一定作用。     

铁水包废钢预熔预热新工艺在某钢铁公司的应用

近年来,随着国内废钢量的逐步增加,与国家相关部门提出的规划要求,国内外很多转炉炼钢厂都在努力增加转炉废钢的熔化能力以降低铁水消耗量。某钢铁公司针对现有4#转炉100t铁水包新建预熔预热处理工艺,使铁水包废钢比最高为8%,理论上实现降低炼钢铁水消耗约40kg/t。同时因为预熔预热后减少铁水温降,缩短了转炉冶炼所需要的时间,对企业实现节能减排起到一定作用。     

炼钢短流程工艺国内外现状及发展趋势

概述了电弧炉炼钢短流程的发展和特点,介绍了在电弧炉短流程炼钢上应用比较成熟的如:DRI、热装铁水、废钢预热等新短流程工艺技术,简要分析了我国短流程炼钢的现状,并对短流程的发展趋势提出了一些看法。     

30t转炉提高废钢比的实践

本文总结了首钢第一炼钢厂近十年提高转炉废钢比的实践经验,对转炉加煤炼钢、提高二次燃烧率、预热废钢和节约热量等提高转炉废钢比的技术进行重点论述,并提出今后努力方向。     

100 t竖式电炉高效炼钢技术分析

分析了安钢100t带指形托架的竖式电炉（FSF）高效炼钢工艺中的废钢预热、铁水热装、强化用氧等核心技术；讨论了竖式电炉在生产实践中遇到的废钢原料和环保问题；提出了培育废钢加工市场、深加工废钢、适当调整废钢布料方式和结构以及完善电炉除尘系统设计工作的改进意见。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

Shijiazhuang will Build the World's Biggest Replacingcopper-with-aluminum Cable Production Base

正Shijiazhuang City will build the world’s biggest replacing-copper-with-aluminum cable production base,the annual output value can reach 100 billion yuan,in the future it will develop replacing-copper-with-aluminum highend industry cluster.This piece of news was learned by the reporter at the Rare Earth highiron Aluminum Alloy[Nonferrous Business Opportunity:Aluminum alloy door]Cable Conductor New Technology Application Seminar held at the provincial capital.     

Chongqing is Preparing to Set Up Nonferrous Metal Exchange,in a Bid to Become the Transit Place of Kazakhstan Copper

正Since the beginning of Chongqing’s upgrading to a municipality directly under the Central Government,Chongqing City has established direct friendly relationship with Almaty,Kazakhstan,and carried out a series of cooperation in commerce and trade,and culture     

Guangxi Baise Extends Industrial Chain to Combat Loss in Aluminum Business

正"For each tonne of aluminum being produced,the upstream enterprise on the aluminum industrial chain will suffer loss about 2000yuan."Said Liang Xiao,Deputy Director of Pingguo Industrial Park Management Committee under the Guangxi Baise City,one of the four major aluminum industry bases in China,on August 11.Extending aluminum     

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL ANNUAL CONTENTS Volume 21(2014)

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Chinalco Straightened Out Copper Assets,and Delegated Stock Equity of Yunnan Copper

正Immediately after the news that Chinalco transferred 58%stock equity of Yunnan Copper Group to its wholly-owned subsidiary China Copper Corporation Limited free of charge was disclosed on July 9,many individual investors couldn’t help but to think:Does it mean China Copper Corporation Limited will assemble assets for overall listing?At present,among main copper business companies under China Copper Corporation     

The Development and Reform Commission Encourages Private Capital to Enter Geological Prospecting Field

正At the press conference recently held by the National Development and Reform Commission under the theme"Deepen Reform in Investment AuditApproval System",when answering questions from reporters,Huang Min,Director of the Department of Fixed Assets Investment of the National Development and Reform Commission,said that in the future it would continue to intensify efforts in geological prospecting,and actively guide social capital to enter this field.     

Guangxi's first Nickel Industry Development Research Report Was Released

正Recently,Guangxi Metallurgical Research Institute,a subsidiary of Guangxi Nonferrous Metals Group,completed survey on laterite and related manufacturers in the region,by combining the current development status of laterite both at home and abroad,it compiled Guangxi’s first"Research Report on the Development of Guangxi Nickel Industrial Chain"which adopted laterite as the study subject.This report expounded on the current     

China’s Major Non-ferrous Metals Imports & Exports(End of September. 2014)

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China's Major Non-ferrous Metals Imports & Exports

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