连续精炼炉的研发进展

介绍了连续精炼炉在联合精炼中的职能,以及其与精炼反射炉的作业方式的区别。针对连续精炼炉在实践中存在的问题,全新设计了保温连续精炼炉,详细介绍其设计思路、结构设计、试验运行情况,重点对其失败原因进行了分析。在吸取保温连续精炼炉经验教训的基础上,对连续精炼炉优化升级,获得了理想的改进效果。提出了连续精炼炉未来的改进思路。     

固体废弃物在微波作用下中温处理烧结烟气中二氧化硫的研究

用几种固体废弃物制备粒状吸收剂,在微波装置中对粒状吸收剂的性能进行了试验.从试验结果看,精炼炉渣掺加粉煤灰或硼泥可以提高烟气脱硫率,这种作用与反应温度有关,反应温度为600-700℃时,效果最好.精炼炉渣掺加粉煤灰的吸收荆较使用精炼炉渣、精炼炉渣掺加硼泥的吸收剂有较高的脱硫率.在此基础上,还探讨了微波功率对吸收剂在微波场中升温的影响,并利用扫描电镜对微波加热精炼炉渣、精炼炉渣和粉煤灰的混合物进行了微观分析.     

钢包精炼炉的能量平衡

本文叙述了克虏伯钢公司氧气顶吹转炉炼钢车间钢包精炼炉能量转换效率的研究情况。用于研究的是装料常为120吨和300吨的钢包精炼炉。除了确定钢包精炼炉加热的热效率外,重点研究各个炉次的能量损失。在300吨钢包精炼炉中加热钢液,由于热参数的变化,热效率波动在30～40％之间。在120吨钢包精炼炉加热,其热效率平均计算较300吨精炼炉低10％。热损失有各种原因,如精炼炉冷却、废气带走和通过钢包内衬的热量损失。从而改善热效率的方法是显而易见的。研究所得的结果,可增进对钢包精炼炉的能量转换的了解,并检验将用于钢包精炼在线温度控制的数学模型。     

LF精炼炉电极升降调节器的升级应用

为了降低精炼炉炼钢耗电,提升精炼炉其它性能指标,杭钢转炉厂对LF精炼炉电极升降调节器进行了升级改造,通过新增弧流检测、弧压检测部分,提高了电极升降调节器的控制精度,从而达到降低精炼炉电耗、稳定冶炼电压的目的,确保LF精炼炉生产线的顺畅运行。     

长短腿RH精炼炉替代摇包冶炼铁合金新方法

优化摇包生产工艺是冶炼中低碳锰铁与中低碳铬铁的研究重点。借鉴炼钢用RH精炼炉的基本原理,提出采用长短腿RH精炼炉替代摇包生产铁合金的新方法。介绍了炼钢用RH精炼炉的基本工艺思想,并对长短腿RH精炼炉用于实现渣金两个液相混合的原理、方法与可行性进行了分析。分析表明,长短腿RH精炼炉可以完成渣金两相的高效混合与快速分离,同时还可以借鉴RH精炼炉的精炼功能完成洁净铁合金生产;解决长腿耐火材料的使用寿命问题是实现长短腿RH精炼炉实际生产的关键问题。     

铜阳极精炼炉炉膛粘结的控制

通过对铜精炼炉生产实践的介绍及工艺流程的分析,对铜精炼炉造成膛粘结的形成机理进行了分析,从严格控制精炼炉入炉物料成分及精炼炉操作工艺条件等方面阐述了炉膛粘结的控制方法。     

70t钢包精炼炉的冶金效果

本文主要确定70t钢包精炼炉在电炉短流程生产线——电炉、精炼炉和连铸中的冶金效果,并根据生产实践过程中收集的有关数据进行工艺分析,从而得出钢包精炼炉具有优越的调整成份和温度以及改善钢液质量的条件。     

30t LF精炼炉造白渣操作工艺分析

介绍转炉炼钢厂在LF精炼炉生产过程中的白渣操作方法。总结适合本厂LF精炼炉的白渣冶炼工艺。     

长短腿RH精炼炉用于替代摇包冶炼铁合金的新方法

优化摇包生产工艺是冶炼中低碳锰铁和中低碳铬铁的研究重点。文章借鉴炼钢用RH精炼炉的基本原理,提出了采用长短腿RH精炼炉替代铁合金生产用摇包的新方法。首先介绍了炼钢用RH精炼炉的基本工艺思想,并对长短腿RH精炼炉用于实现渣金两个液相混合的原理、方法与可行性进行了分析。分析表明,长短腿RH精炼炉可以完成渣金两相的高效混合与快速分离,同时还可以借鉴RH精炼炉的精炼功能,完成洁净与纯净铁合金生产。解决长腿耐火材料的使用寿命问题是长短腿RH精炼炉进行实际生产的关键问题。     

RH真空精炼脱硫技术的开发与实践

没有喷粉枪、真空室下部没有吹氧(OB)喷嘴、顶枪不具备喷粉功能的常规RH真空精炼炉不具备脱硫功能,通过优化转炉、吹氩站脱氧、脱硫物料的加入时机,创新RH真空精炼炉加入脱硫物料的方法,保证了RH真空精炼炉的脱硫功能。在RH真空精炼炉处平均加入205kg脱硫物料,平均脱硫0.0024%。     

基于炉体相电压恒定量的电热设备测控技术

为进一步优化工艺、降低能耗,需要提高交流电弧电热设备的测控水平。对俄罗斯开发的一种相电压中恒定量测算技术进行报道。对相电压中恒定量的计算原理及测算方法以及在电熔刚玉炉、电石炉、黄磷炉、LF钢包精炼炉中的应用进行了介绍,希望该方法能够在铁合金矿热炉、LF钢包精炼炉等电热设备中实现应用,以提高中国电热设备的测控水平。     

Modern technologies for processing ferrous and nonferrous scrap metal

This article discusses the advantages of medium-frequency induction furnaces and refining units based on them that can be used to refine both ferrous and nonferrous metals. Due to automation of the processes that take place in these furnaces and reductions made in atmospheric emissions and noise level’ they are highly efficient and cost-effective’ consume small amounts of electric power’ and are convenient and safe to operate. The induction refining units made by the company RELTEK can be built with automatic charging and weighing equipment that will not only reduce staffing requirements but also accurately account for the metal that is remelted. Automation of furnace-charging increases these units’ productivity by shortening the amount of time spent on auxiliary operations.     

LF钢包精炼炉实践

介绍了邯钢一炼钢两台ＬＦ钢包精炼炉方案选择以及在生产中所起的作用,从而证明在中小转炉厂建设ＬＦ钢包精炼炉是可行的。     

Automatic Control System for Thermal State of Reverberatory Furnaces in Production of Nickel Alloys

Metallurgist - The paper describes the development of an automated digital system for monitoring and controlling the thermal regime of gas reverberatory furnaces for fire refining of nickel based...     

炼钢冷态相似模拟理论及应用

论述了冷态相似模拟理论基础，并针对钢包精炼、溅渣护炉等的冷态模拟试验，给出了具体模拟方法。对于错误的模拟试验给予指正，如钢包精炼炉底吹搅拌的模拟准则的确定，溅渣护炉中由于渣粘度的变化，模拟试验时应给予一定修正。     

Features of a technology for making steel in 180-ton arc furnaces in the electric steelmaking shop at the Magnitogorsk Metallurgical Combine

This article presents the main specifications of arc furnaces that have been installed in the electric steelmaking shop at the Magnitogorsk Metallurgical Combine. One feature of these furnaces is that they can be operated with the use of liquid pig iron. Here’ the amount of pig iron in the charge can be as high as 40%. The use of liquid pig (up to 30%) shortens the refining operation in the furnace.     

From mediation — to innovative technologies

TECHCOM is the leader in the development and introduction of the latest equipment and systems for mixing gases, homogenizing melts in refining furnaces with respect to temperature and chemical composition, and removing nonmetallic inclusions during out-of-furnace treatment and casting.     

Improving lining systems for metallurgical equipment

Results are presented from a project undertaken to improve the systems used to line metallurgical furnaces at the Chelyabinsk Metallurgical Combine. The improvements made reduce the unit consumption of refractories and increase the life of the lining in several pieces of equipment: the main furnace used to make corrosion-resistant steels; the argon-oxygen refining unit; the tundishes of the continuous casters in electric steelmaking shop No. 6; the electric furnaces and vacuum chambers in electric steelmaking shop No. 2, and other equipment.     

Effectiveness of using oxygen-gas burners in modern arc steelmaking furnaces

Oxygen-gas burners have become a standard component of modern electric-arc steelmaking furnaces worldwide as a means of increasing productivity and reducing electric power consumption. The use of such burners in these furnaces is expedient from both an economic and an energy standpoint. On the average, the use of 1 m³ of natural gas to heat the scrap in the furnace charge saves 0.6–0.8 m³ of natural gas for the refining operation. The amount of heat obtained from the combustion of natural gas can be increased significantly by equipping arc steelmaking furnaces with high-capacity rotary oxygen-gas burners that allow changes to be made to the direction of the flame.     

钢包操作条件对耐火材料使用寿命的影响

分析探讨了钢包温度、精炼时间、渣的碱度、渣的氧化性、渣的黏度、真空处理、超高温、吹气搅拌等操作条件对包衬耐火材料侵蚀的影响,总结了不同精炼设备的使用寿命,对提高钢包的使用寿命和减少钢包耐火材料的消耗具有指导意义。