基于三段自修正法的炉衬侵蚀测量模型与系统

对高炉炉衬侵蚀进行实时监测和预报并提前采取有效措施是提高高炉寿命和安全生产运行的重要手段。以莱钢1880高炉为例,在采集炉体预埋专用传感器阵列数据的基础上,通过热电阻温度传热机理分析,采用三段自修正法建立高炉炉衬侵蚀测量模型,结果表明,该方法能有效克服非线性影响,提高炉衬侵蚀测量精度。     

Flow and Heat Transfer Performance of Slag and Matte in the Settler of a Copper Flash Smelting Furnace

Simulation of two‐phase flow in a copper flash smelting settler with simultaneous tapping of slag and matte is carried out using Eulerian‐Eulerian two‐fluid model and the flow and heat transfer performance of slag and matte is examined. Detailed velocity vectors, temperature and volume fraction distributions are obtained. The results show that the small copper droplets will be suspended in the slag. When the droplet diameter is large enough, the slag and matte layer are clearly formed and the dispersion layer between the slag and matte layers becomes thinner at larger droplet sizes and its thickness remains nearly unchanged when the copper droplet diameter is larger than about 500 μm.     

Role of Direct Reduced Iron Fines in Nitrogen Removal from Electric Arc Furnace Steel

Electric arc furnace steel contains about 70‐120 ppm nitrogen. There is no suitable method for nitrogen removal from electric arc furnace steel up to the level desired for good quality bars and flat rolled products (30 ppm max). The existing process based on vacuum degassing can remove only up to 20% of nitrogen in steel. In the present study DRI fines have been injected into a steel bath which can drift out nitrogen in steel through production of fine CO bubbles in‐situ on reaction with residual FeO in DRI fines and C in bath. For high and medium carbon steel, nitrogen got reduced to 30 ppm and 60 ppm respectively where initial nitrogen was 150 – 200 ppm in steel. Nitrogen removal also depends upon bath depth and addition level of DRI.     

新型孔洞式全热滑轨技术在推钢式加热炉上的应用

介绍了新型孔洞式全热滑轨技术的原理、特点及其在推钢式加热炉上的应用。     

电弧炉生产镍铬铁的生产实践

采用电弧炉将红土镍矿生产镍铬铁在技术上可行，经济效益显著。通过科技创新，开辟了电弧炉的冶炼新功能——电弧炉当作矿热炉使用，生产镍铬铁。该工艺具有一定的推广意义。     

防止炼锌电炉炉底积铁的生产实践

叙述了炼锌电炉炉底积铁形成的机理,探讨了炉料成分、炉温、电极插入深度、渣型、还原剂配比等因素对积铁形成的影响,介绍了防止积铁产生的措施。     

云铜2^#电炉恒功率自动控制系统

介绍了云铜2^#电炉恒功率自动控制系统的控制原理、组成、各模块的功能特点及采用电极对地电阻作为控制主参数实现恒功率控制取得的效果。     

菜钢2^#1000m^3高炉低硅冶炼实践

莱钢2^#1000m^3，高炉自开炉以来，通过加强原燃料管理，调整布料矩阵，摸索合理的操作制度，维持足够的鼓风动能和理论燃烧温度，保证足够的炉缸温度和活跃的炉缸工作状态，达到了低硅冶炼的目的，使铁水含硅量一直控制在0．37％左右的较低水平。     

1号高炉基本操作制度探讨

根据首钢1号高炉自身炉型特点及不同时期的炉料质量变化情况，逐渐掌握了矮胖型高炉煤气分布规律，并通过装料与送风制度的有机结合，对煤气分布进行了有效控制，使高炉顺行状况得以改善，综合燃耗降低，2006年各项技术经济指标大幅攀升。     

富氧燃烧技术的应用现状分析

介绍了富氧燃烧技术在加热炉上的应用。重点分析了富氧燃烧/全氧燃烧的节能特性及减排性能,最后还就发展趋势和有待进一步研究的问题进行了分析。