溅渣护炉实验研究与应用

文章通过对溅渣护炉的水模实验及工业性实验研究,确立了该厂溅渣护炉的工艺参数,并指导实际生产,取得良好效果。     

宝钢300t转炉溅渣护炉工艺研究

介绍了宝钢３００ｔ转炉溅渣护炉工艺研究中所进行的水模试验、炉渣成分选择、溅渣用氧枪喷头设计、喷吹参数控制等方面的工作，以及所取得的成果。宝钢转炉炉龄已达到１４００１炉。     

宝钢300 t转炉溅渣护炉工艺研究

介绍了宝钢３００ｔ转炉溅渣护炉工艺研究中所进行的水模试验、炉渣成分选择、溅渣用氧枪喷头设计、喷吹参数控制等方面的工作，以及所取得的成果。宝钢转炉炉龄已达到１４００１炉。     

新余钢铁公司25 t转炉溅渣护炉工艺的研究

采用缩小的冷态模型，对新余钢铁集团有限公司25t顶吹转炉的溅渣护炉工艺进行了研究。结果表明，顶吹气体流量的提高有利于增加炉衬的溅渣密度；当气体流量为7000m^3/h时，最佳枪位为1．4m；从整个炉衬的溅渣密度来看，最佳渣量为8％－10％，综合考虑炉衬和炉帽的溅渣量，最佳渣量为10％。将以上溅渣工艺参数应用到实际生产中，并采用改渣剂对高氧化铁终渣成分进行调整，新余钢铁集团有限公司转炉平均炉龄由2238炉增加到8721炉，最高炉龄达到11675炉。     

溅渣护炉技术在首钢转炉上的应用

本文通过首钢转炉溅渣护炉的实践,详述了溅渣护炉的基本工艺;分析了炉渣成分的粘度,炉内留渣量,氮气流量、压力及枪位,冶炼温度等影响溅渣护炉效果的基本工艺参数;列举了溅渣护炉的效果;提出了存在问题和解决办法。     

低碳低磷钢溅渣工艺技术研究

文中从溅渣用炉渣要求、溅渣加料时机及种类、溅渣工艺参数、溅渣过程中几类现象开展溅渣工艺技术研究,提出溅渣用炉渣要求在一定温度范围内,具有较好的流动性、粘性、抗高温侵蚀性.围绕炉渣要求,对溅渣加料时机、种类进行研究,得出低碳低磷钢溅渣过程应以熟料为主,以增加渣中碳和镁的物料为主.在提高溅渣量和溅渣效果方面,通过溅渣水模型实验,研究了枪位、顶底吹流量、渣量对溅渣的影响,得出对溅渣量和溅渣效果影响因素大小排序为枪位、渣量、顶吹流量,而底吹流量变化对溅渣量和溅渣效果无影响.实际溅渣作业过程中存在较多问题,如溅渣加料不固定、溅渣枪位不规范等,各厂应根据自身情况开发自动溅渣模型,实现自动加料和自动溅渣,参考溅渣水模型实验结论动态控制渣量、枪位等参数,以保证溅渣后炉型规则、炉壁溅渣层厚度均匀.     

60t转炉溅渣护炉技术控制实践

文章以日照钢铁有限公司60t转炉的工艺参数为切入点,分析了溅渣层损坏原因、溅渣护炉机理、影响溅渣护炉主要工艺因素,并总结了60t转炉溅渣护炉控制实践经验.实践应用表明日照钢铁60t转炉通过大面粘补,控制终渣成分,渣量及溅渣枪位、时间等关键因素,转炉溅渣效果得以提高,转炉炉况得到了良好的维护.     

转炉溅渣护炉技术的工艺参数优化

着重对溅渣护炉技术的工艺参数优化过程进行了探讨，确立了溅渣调渣原则，对转炉留渣量、出钢温度、氮气压力和流量，溅渣枪位与时间、溅渣率等工艺参数的控制进行了分析，指出了湘钢条件下的溅渣工艺参数的适宜范围。     

顶吹转炉溅渣护炉工艺冷态模型实验研究

采用水力模型的研究方法,对顶吹转炉溅渣护炉工艺进行冷态模型试验。通过测定溅到转炉炉衬上的渣量,分别对顶枪枪位、气体流量、渣量等工艺参数的影响进行比较,从而确定最佳操作工艺参数。     

复吹转炉溅渣护炉工艺优化

南京钢铁联合有限公司中厚板卷厂转炉终点钢液w(C)一般为0.03 %～0.06 %,炉衬侵蚀严重且溅渣护炉效果差.进行了复吹转炉溅渣护炉工艺物理模拟研究,优化了溅渣护炉工艺参数;炉渣采用改渣剂进行改质的热态实验,并在生产中正常应用,获得很好效果.     

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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