加热炉助燃风机节能改造的探讨

介绍了热轧板厂2#加热炉助燃空气系统节能改造的几种方案。重点提出了助燃风机变频改造并对变频调速改造后的经济效益进行了较为详细的计算。     

1780产线主电机冷却风机变频节能技术应用

介绍了梅钢热轧1780产线主电机冷却风机变频节能控制系统的立项起因、系统组成以及实际的节能效果展示,可作为同行主电机冷却风机节能措施参考借鉴,打开思路,实现相关冷却风机的变频节能改造。     

蓄热式加热炉燃烧过程控制系统改造

加热炉燃烧过程控制系统是优化燃烧控制模式,达到节能降耗的目的。介绍了控制方式由PLC逻辑控制升级为数学模型控制的思路和方法,以及产生的效果。改造后节能效果明显,对蓄热式加热炉燃烧控制方式的改造具有应用推广价值。     

煤气加压风机控制系统的变频调速改造

根据煤气加压风机的工艺流程特点,采用变频调速技术,对煤气加压风机电机的控制系统利用变频调速技术进行改造,实现了两台变频器控制4台电机的节能运行方式,发挥了变频技术的节电性能,达到了预斯的节电效果。     

加热炉供风控制策略优化应用实践

空燃比的控制精准度直接影响着加热炉排烟成分、加热效率、工艺能耗、产品质量、减排、环保等诸多指标。文章通过对某厂特钢加热炉改造过程中实施变频风机与自动调节阀联调优化的方式为加热炉供配风的工程实践,实现了加热炉动态供热过程中的空燃比的稳定控制,实现了加热车间节能减排,提质增效的效果。     

多段分散双蓄热式烧嘴加热炉的应用及特点

结合西林钢铁集团公司第一轧钢厂蓄热式烧嘴加热炉大修改造项目,介绍了蓄热式烧嘴加热炉的概况、燃烧和控制系统的结构特点。结果表明,多段分散空煤气双蓄热式烧嘴加热炉运行安全可靠,加热质量、加热能力达到了设计要求,自动化控制系统双交叉燃烧控制原理满足现场要求,给工艺控制和生产组织提供保证。多段分散式控制布置在增产降耗、高效节能等方面具有优势。     

除尘风机变频器控制系统设计与实现

文章通过对2#风机电机控制系统进行改造,将其控制系统改造为变频控制系统,解决在生产高峰期除尘风机出力不足的问题,并能够根据工艺要求对除尘风机进行无级调速,实现节能降耗的目的。同时对2#风机进行了远程监控改造,确定了以S7-400系列的PLC作为控制单元,以ET200M作为远程控制站,实现2#风机电机变频控制的远程监控和管理。     

变频调速技术在加热炉风机中的应用

主要介绍了变频器在特钢厂加热炉风机系统中的应用，简述了变频调速技术及改造方案的实施、应用与效果。     

机尾除尘风机的高压变频节能改造

为节约电能,对机尾除尘风机进行高压变频节能改造。通过对电气主回路、变频冷却系统等方面进行改造,节能效果明显,机尾除尘风机运行情况良好,改善了工艺条件,取得了较高的经济和社会效益。     

冷却塔风机联合变频节能探讨

循环水系统冷却塔风机直启效率低下,无法满足循环水冷却要求的现状。在冷却塔风机变频节能改造的概念上提出风机联合变频的创新思路。以5台冷却塔风机改造为例,探讨联合变频的实际节能效益和价值。     

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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