浅谈攀钢二号高炉钒钛磁铁矿强化冶炼

实践证明,先进的高炉设备,重视精料工作,强化冶炼操作制度,是攀钢二号高炉利用系数突破２．２ｔ／ｍ３·ｄ的关键所在。     

钒钛磁铁矿高炉冶炼的强化

以高钛型钒钛磁铁矿为主要原攀钢高炉,在解决了泡沫渣、粘渣、铁水粘罐、铁损高、脱硫能力低等重要技术难题后,通过优化高炉操作及炉料结构,开发一系列强化冶炼的新技术,取得了大型高炉在采用难冶炼的特殊矿、入炉品位低的情况下达到高利用系数的经验,获得了巨大的经济效益,并建立了高炉冶炼钒钛磁铁矿的系统理论。     

攀钢4号高炉钒钛磁铁矿强化冶炼实践

对攀钢4号高炉钒钛磁铁矿强化冶炼实践进行了总结,通过采取精料技术措施,摸索合适的上下部操作参数,使高炉指标达到了较好的水平,并保持了长期稳定运行,2010年高炉的冶炼强度平均达到1.467,利用系数平均达到2.563。     

攀钢高炉钒钛磁铁矿冶炼的技术进步

 攀钢高炉钒钛矿冶炼投产30多年以来,冶炼技术经历了不断的发展和完善,随着精料水平及装备水平的提高,高炉冶炼不断强化,逐步形成了独特的钒钛矿高炉强化冶炼技术。技术经济指标大幅度提高,在入炉品位仅50%的条件下,高炉利用系数达到了2.5 t/（m3·d）以上。     

攀钢3号高炉钒钛磁铁矿高效生产实践

通过采取精料、增大高炉送风量、调整风口布局、注重高炉中部调剂及加强炉前管理等一系列强化措施,攀钢3号高炉利用系数较长时间稳定在2.7以上,使冶炼钒钛磁铁矿炼铁技术指标取得突破,实现了高效生产.     

攀钢3号高炉强化冶炼实践

攀钢3号高炉中修开炉后,通过采取大风量、富氧大喷煤、高压差、全风温、适当抑制边缘煤气流、延长出铁时间、控制中上限炉温和适当的炉渣碱度等措施成功地实现了强化冶炼操作,取得了很好的技术经济指标.     

近年来攀钢高炉强化冶炼浅析

本文从改善入炉烧结矿实物质量、优化炉料结构、选择适宜的上下部调剂、稳定炉内操作等方面对摩钢近几年的高炉冶炼作了简要分析。     

冶炼钒钛磁铁矿的高炉喷煤技术

冶炼钒钛磁铁矿的高炉,由于喷煤时未完全燃烧的煤粉进入炉缸,与高温熔渣接触,促使高熔点的钛的碳氮化合物生成,导致炉渣粘稠,使冶炼无法正常进行,因此喷煤技术被视为冶炼钒钛磁铁矿高炉的禁区。近年来,攀钢高炉采用高冶炼强度、低喷煤强度、均匀喷吹、氧煤混喷等技术改进工艺,使高钛型钒软磁铁矿高炉喷煤技术获得成功,并在攀钢1号高炉投入生产,实现了技术上的重要突破并获得良好的经济效益和社会效益。     

攀钢钒新3号高炉强化冶炼钒钛磁铁矿生产实践

攀钢钒新3号高炉是钒钛磁铁矿冶炼技术首次应用于2000 m3级高炉,在6年多的生产实践中,各种操作制度通过不断地摸索,目前已掌握了大高炉冶炼钒钛磁铁矿的冶炼规律。本文就其精料工作、上下部调剂、特殊炉况处理等方面进行了系统的阐述,初步说明了大高炉冶炼钒钛矿各项操作制度的调剂方向。     

有条件的中小高炉要立足于采用钒钛磁铁矿冶炼

我省钒钛磁铁矿运用于大高炉冶炼操作已处于国际领先地位,而中小高炉却处于向外购矿吃百家矿的窘境。为了改变这一状况,根据现实条件,通过概算,提出了在中小高炉按各自条件采用低、中、高钛型炉渣的冶炼工艺。为合理利用资源,缓解我省攀矿出矿能力大于用矿厂家的供需矛盾,提高高炉技术经济指标,回收钒的资源,实为我省中小高炉今后的发展技术方向。     

Development of Intensified Technologies of Vanadium-Bearing Titanomagnetite Smelting

It was very difficult for the smelting of vanadium-bearing titanomagnetite by blast furnace because the content of TiO2 of blast furnace slag could amount to 20%-25%.After long term development and continuous improvement,special intensified smelting technologies for vanadium-bearing titanomagnetite by blast furnace were obtained and improved gradually.With the improvement of beneficiated material level and equipment level,smelting intensity has been increased gradually and the highest comprehensive smelting...     

湘钢新1^#高炉强化冶炼实践

通过采取加强精料工作、提高风温、增加富氧、实施烟煤与无烟煤混合喷吹、提高顶压、加强炉前管理、降低休风率、优化上料程序等一系列措施。2008年新1^#号高炉炉况保持长周期稳定顺行，实现了强化冶炼。     

Progress in Technologies of Vanadium‐Bearing Titanomagnetite Smelting in PanGang

The smelting of vanadium‐bearing titanomagnetite by blast furnace was very difficult because the content of TiO₂ of blast furnace slag could amount to 20‐25%. After long term development and continuous improvement, special intensified smelting technologies for vanadium‐bearing titanomagnetite by blast furnace were obtained and improved gradually. With the improvement of beneficiated material and equipment, smelting intensity has been increasing gradually and the highest comprehensive smelting intensity that is fuel comsumption per unit useful volume per day reached 1.45t/(m³·d). Technical‐and‐economic indexes of blast furnace have also been increasing remarkably. The highest monthly utilization coefficient exceeded 2.7t/(m³·d) on the condition that the burden total ferrum grade was only about 50%.     

攀钢2号高炉强化冶炼实践

较高的冶炼强度是冶炼高钛型钒钛磁铁矿高炉稳定顺行的必要条件,攀钢２号高炉由于采取了提高入炉矿品位,降低炉渣熔化性温度,降低入炉粉末,适时调整鼓风动能等措施,并针对新高炉的特点,建立了合适的热制度和上下部调剂原则,提高了冶炼强度,技术经济指标优良,１９９８年１０月在入炉矿品位４６．５９％的条件下,高炉利用系数达到２．２２１,焦比为５１８ｋｇ／ｔ,煤比为７７．０５ｋｔ／ｔ。     

安钢9号高炉强化冶炼实践

安钢9号高炉(2800m~3)采用了当今世界一系列先进的新技术、新工艺、新设备,经过开炉前的精心准备,科学实施开炉方案,高炉快速达产,随后,很怏进入强化冶炼阶段。通过高炉的上、下部操作制度,高炉生产水平迅速上升,实现了高产、稳产。     

安钢1号高炉大修改造及生产实践

安钢１号高炉（３００ｍ＾３）１９９９年大修时,对高炉本体、热风炉、槽下上料等进行了改造。高炉投产后,通过采取加强技术管理、优化炉料结构、全风温操作富氧喷煤以及进行低硅生铁冶炼等找施,高炉生产不断强化,利用系数连续７个月保持在３．０以上,２０００年２月高达３．２。     

碱金属对钒钛磁铁矿高炉冶炼的影响及对策

分析了碱金属在钒钛磁铁矿高炉冶炼中的循环富集行为、对炉料性能以及高炉冶炼的影响,指出了高炉内碱金属的潜在危害及防止措施.认为:攀钢高炉碱负荷较高,但炉渣排碱能力较强,目前碱害尚未凸现.碱金属对焦炭的破坏作用突出,且近年来劣化趋势明显,应加以重视.通过合理配煤或尝试对焦炭钝化处理,可以在一定程度上改善其热性能,增强焦炭的抗碱侵蚀能力.     

武钢1号高炉强化冶炼实践

对武钢1号高炉大修开炉以来的操作经验进行了总结.通过采取精料、优化装料制度、调整风口布局、完善高炉操作及加强管理等措施,高炉实现了强化冶炼,同时取得了较好的技术经济指标.     

Influences of Technological Parameters on Smelting-separation Process for Metallized Pellets of Vanadium-bearing Titanomagnetite Concentrates

The smelting-separation process for metallized pellets of vanadium-bearing titanomagnetite concentrates was studied.The influences of smelting temperature,smelting time,and the basicity of the metallized pellet on vana-dium and iron recovery were investigated.The characteristics of titanium slag were analyzed using X-ray diffraction, energy dispersive spectroscopy,and mineralographic microscopic analysis.The results demonstrate that appropriate increases in smelting temperature and smelting time can improve the vanadium and iron recovery from metallized pel-lets and are beneficial for the slag-iron separation.Although increasing the basicity of the metallized pellet can consid-erably improve the vanadium and iron recovery,the TiO2 grade of titanium slag was decreased.Under the optimal conditions,90·17% of vanadium and 92·98% of iron in the metallized pellet were recovered,and the TiO2 grade of titanium slag was 55·01%.It was found that anosovite,augite,spinel,glassiness,and metallic iron were the main mineral phases of the titanium slag.