高炉料流调节数字泵控制系统

本文介绍了一种高炉料流调节数字泵控制系统，该系统抗污染能力强、传动效率高、数字泵容易与微机接口，是适用于高炉恶劣环境的电液控制系统。     

大型高炉炉底板的焊接及变形控制

介绍了大型高炉炉底中心板塞焊缝和纵长焊缝、边环板径向焊缝及其他大收缩量焊缝的焊接要求，通过采用强行固定措施和合理安排焊接程序，使整体焊接变形控制在其技术要求的范围之内。     

Tuyere-gas energy relationships in blast furnace control

Energy availability above various temperatures is important and productivity must be considered with energy availability for effective control.     

高炉轴流风机的冗余自动控制系统

介绍了龙钢集团炼铁轴流风机的控制系统实施方案,以及实施过程中的一些改进和完善,该系统实现了对风机的高可靠性冗余控制,控制系统运行稳定可靠,达到了预期效果,保证了高炉的Jl~1]达产达效。     

高炉出铁场除尘技术研究与应用

本文论述了出铁场烟气治理的必要性,介绍了武钢对出铁场烟尘的"全面控制”方法,总结了效果并指出了需进一步完善的措施.     

The effect of pulverised coal injection in blast furnace using computer simulation technique

A computer model simulates the effect of different types of coals on blast furnace operations. In this study, two kinds of programs, CHEMIX and ESTIMA as parts of a thermochemistry package known as THERMOCHEMISTRY were used for checking the adiabatic flame temperature. Results showed that the adiabatic temperature decreased considerably as the pulverized coal injection (PCI) rate increased, with the rate of decrease largely dependent on the chemical properties of the coal-mainly the carbon content and calorific value. The coal with the least carbon content has the least effect on the flame temperature. However, the coal/coke replacement ratio is very low. PCI increases the rate of generation of the reducing gases, namely CO(g) and H₂(g), which depend largely on the chemical properties of coal. The results suggest that a simple calculation using computing programs may be useful for determining the suitability of a coal for injection in blast furnaces.     

Soviet blast furnace practice

Continuing the Journal of Metals’ survey of operating practice in major Soviet steel mills, we present a survey made by a leading American authority on blast furnace practice during his recent visit to the USSR as a member of a group sponsored by the American Iron & Steel Institute.     

Humidified blast furnace operation

Use of humidified blast is particularly valuable where practice necessitates use of Lake Superior ores, because they cannot withstand higher blast temperatures unless used in conjunction with controlled moisture in the blast. This paper describes operating characteristics of No. 5 blast furnace at Indiana Harbor with higher blast temperatures and added moisture.     

气电立焊在高炉炉壳立缝焊接的应用

叙述了气电立焊焊接技术的工艺原理以及熔池的形成及其焊机构造组成,并以柳钢结构分公司的新2#高炉技改工程为例,介绍了气电立焊技术在高炉炉壳立缝焊接的应用,针对气电立焊焊接缺陷,分析了其产生原因并采取相应的技术措施和管理措施进行预防和减少缺陷发生.根据JB/4730.3-2005<钢制压力容器焊接>标准对焊缝进行超声波检验,焊缝合格率100%,并且有38.2%的焊缝为Ⅰ类焊缝,效果良好.     

炼铁高炉中铜冷却壁焊缝组织的原位金相

研究了2种不同高炉铜冷却壁Ⅰ(焊丝为合金),Ⅱ(焊丝为纯铜)管板焊接结构处的原位显微组织.经观察发现,对金相图片进行特殊的原位处理后,可找到焊接熔合线,并由此确定焊缝区、热影响区及母材区铜冷却壁Ⅰ中存在外形显著有别的柱状晶、等轴晶以及相应的过渡晶,其焊缝中存在未熔合、气孔和变向生长柱状晶等焊接缺陷.铜冷却壁Ⅱ晶粒相对均匀,焊缝组织中未发现明显的焊接缺陷.根据研究结果,提出了改进铜冷却壁的焊接工艺.     

高炉原料混匀效果分析

基于高炉原料混匀目的,分析了影响混匀效果的因素,介绍了提高混匀效果的工艺设计要点     

Thermodynamic modeling of lead blast furnace

A thermodynamic model was developed to predict the distribution behavior of Cu, Fe, S, O, Pb, Zn,As, and the heat balance in a lead blast furnace. The modeling results are validated by the plant data of a lead smelter in Kazakhstan. The model can be used to predict any set of controllable process parameters such as feed composition, smelting temperature, degree of oxygen enrichment and volume of oxygen-enriched air. The effects of the blast air, industrial oxygen, and coke charge on the distribution of Cu, Fe, S, O, Ph, Zn, As, the heat balance, and the lead loss in slag, were presented and discussed.     

Nitrogen quench of experimental blast furnace

Preliminary results of chemical and petrographic analyses of samples from US Bureau of Mines experimental blast furnace quenched by blowing it out with nitrogen.     

一种新型高炉送风装置

针对唐钢炼铁厂3#高炉送风装置容易漏风、发红的问题,对送风装置结构、密封形式及耐火材料进行改进,保证了高炉的正常使用,实现了送风装置的长寿命。