邯 钢 高 炉 渣 的 熔 化 性 能

 根据邯钢目前高炉的冶炼条件,以现场渣为基准,研究了炉渣碱度、MgO、Al2O3和TiO2含量对炉渣熔化性能的影响。结果表明,随碱度增加,炉渣粘度和熔化性温度先下降后提高。较高的MgO含量可降低炉渣粘度和熔化性温度,提高炉渣流动性。随渣中Al2O3含量增加,炉渣流动性变差。渣中TiO2含量对炉渣粘度和熔化性温度影响不明显。本试验条件下,合理的炉渣组成为：二元碱度为110~115,MgO含量为1119%左右,Al2O3含量为1439%左右,TiO2含量可根据现场原料变化情况而定。     

适宜太钢4 350 m3高炉炉渣的成分

 根据太钢4 350 m3高炉的原燃料条件,研究了炉渣二元碱度(R=CaO/SiO2)、MgO含量和Al2O3含量对高炉渣流动性及熔化性温度的影响,从理论上分析了炉渣中Al2O3及MgO的适宜含量范围。结果表明,在原燃料条件下,炉渣碱度在120左右,MgO含量约11%,Al2O3含量为14%~15%时,炉渣流动性较好。     

富Al2O3高炉炉渣粘度实验研究

高炉炉渣中Al2O3含量过高会造成炉渣粘度增高,流动性变差,使高炉技术经济指标降低.本研究通过调整炉渣中二元碱度与MgO含量以及添加少量CaF2等措施,从而达到在高Al2O3含量条件下也能保证高炉生产合适的炉渣粘度.     

翼钢高炉炉渣的冶金性能研究

在目前的原燃料条件下,为保证翼钢高炉炉渣具有良好的流动性和较高的脱硫能力,以高炉渣中4种主要氧化物 (CaO、SiO2、Al2O3、MgO)为基础,实验研究了MgO、Al2O3含量及碱度对炉渣熔化性温度和流动性的影响.结果表明:为保持高炉顺行,炉渣的m(CaO)/m(SiO2)应控制在1.1～1.2之间,炉渣温度不宜低于1450℃.     

高炉渣的冶金性能及造渣制度

针对唐钢高炉大量采用高品位、低SiO2含量、高Al2O3含量的外矿的特点,研究了在新的配矿结构下,炉渣碱度(CaO/SiO2)、MgO含量和Al2O3含量对唐钢高炉炉渣的粘度、熔化性温度、脱硫能力的影响.唐钢高炉合理的造渣制度为:保持炉渣温度稳定,碱度控制在1.10左右,MgO的质量分数控制在11%左右,通过合理配煤,适当使用部分冀东矿的方法尽量降低炉渣的Al2O3含量.     

碱度和Al2O3含量对高炉渣性能的影响

以鞍钢高炉渣为基础,在实验室条件下研究碱度、Al2O3和MgO含量对炉渣粘度和熔化性温度的影响,确定了鞍钢高炉合理的炉渣成分范围为：碱度R2 1．05—1．10,Al2O3含量小于14％,MgO含量8％-10％。     

高Al2O3含量渣系高炉冶炼工艺探讨

针对当前高炉炼铁原料中Al2O3含量不断提高,导致炉渣中Al2O3含量也不断提高的新情况,从分析炉渣的物理化学特性入手,剖析了高Al2O3含量高炉给操作带来的危害,并分析了在高Al2O3含量条件下改变炉渣碱度、成分对高炉冶炼的影响,探讨了高Al2O3含量条件下高炉的冶炼工艺.分析表明,炉渣中Al2O3含量高时,不能通过提高碱度的方法改善炉渣的脱硫能力;适宜地提高炉渣中MgO的含量,将有助于降低炉渣粘度和提高炉渣脱硫能力,渣中适宜的MgO含量应为8%～11%;提出了合理添加MgO的新型工艺.     

鞍钢高炉炉渣粘度的研究与优化

在试验室对鞍钢高炉炉渣粘度进行了系统的研究与优化，选取高炉生产中的实际渣样作为实验基础渣样，以CaO、SiO2、Al2O3、MgO含量和二元碱度(R2)为因素，采用只改变某一因素，固定其他因素的交叉因素法，配制出不同碱度、不同MgO含量和不同Al2O3含量的渣样，分别进行粘度和熔化性温度的测定。结果表明：鞍钢高炉炉渣的最佳碱度R2应该在1.05～1.10，MgO含量在8％～10％，Al2O3含量小于14％。     

高炉高铝炉渣性能研究

通过高炉现场取样和实验室配制渣样,研究了炉渣中Al2O3、MgO、R(2CaO/SiO2)、R(4(CaO MgO)(/SiO2 Al2O3))等对炉渣性能的综合影响。结果表明,随着高炉终渣Al2O3含量的提高,炉渣的熔化性温度上升、高温粘度增大、热稳定性变差、脱硫能力下降。较高的MgO含量与高的四元碱度R4可降低炉渣高温粘度、降低熔化性温度、拓宽高温低粘度区,提高炉渣脱硫能力。根据原料情况,马钢高炉炉渣Al2O3可达到17%左右,为马钢高配比使用外购高铝矿提供了依据。     

MgO含量和碱度对高炉渣的黏度的影响

根据唐山钢铁有限责任公司第二炼铁厂高炉的原料条件和冶炼情况,研究了MgO、二元碱度(CaO/SiO2)对高炉渣的流动性黏度以及熔化性温度的影响,为唐钢高炉优化造渣制度提供实验和理论依据,结果表明:炉渣碱度在1.10～1.20之间,MgO在10%～12%,Al2O3≯14%时高炉能达到较好的冶炼效果,从理论上分析了炉渣中R2及MgO的适宜含量范围.     

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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