20t氧气顶吹转炉死炉帽改为活炉帽的实践

２０ｔ氧气顶吹转炉死炉帽改为活炉帽的实践刘贵生赵庆余武占英（邯郸钢铁集团有限公司）ＰＲＡＣＴＩＣＥＯＦＴＲＡＮＳＦＯＲＭＩＮＧＴＨＥＦＩＸＥＤＣＡＰＯＦＴＨＥ２０ｔＴＯＰＢＬＯＷＩＮＧＢＯＦＩＮＴＯＡＭＯＶＡＢＬＥＣＡＰＬｉｕＧｕｉｓｈｅｎｇＺｈａｏ...     

薄板坯连铸连轧衔接的关键设备─－加热均热保温炉（下）

薄板坯连铸连轧衔接的关键设备─－加热均热保温炉（下）邬培爱，刘光川（包头钢铁设计研究院）ＲＥＨＥＡＴＩＮＧ，ＳＯＡＫＩＮＧＡＮＤＨＯＬＤＩＮＧＦＵＲＮＡＣＥ－ＡＫＥＹＥＱＵＩＰＭＥＮＴＦＯＲＴＨＥＣＯＮＮＥＣＴＩＯＮＯＦＢＡＲＳＴＲＩＰＣＯＮＴＩＮＵ...     

技术信息

技术信息包钢４号高炉建成投产Ｎｏ．４ＢＦＡＴＢＡＯＴＯＵＩＲＯＮ＆ＳＴＥＥＬＡＮＤＲＡＲＥＥＡＲＴＨＣＯＭＰＡＮＹＰＵＴＩＮＴＯＯＰＥＲＡＴＩＯＮ￥内容积２２００ｍ~３的包钢４号高炉已建成投产。该炉采用节能高产的矮胖式炉型，自立式炉壳，富氧喷煤，炉前?..     

河北省延长高炉寿命暨全国第三届钛护炉专题研讨会会议纪要

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徐钢采用聚能爆破高炉炉瘤获成功

徐钢采用聚能爆破高炉炉瘤获成功ＴＥＣＨＮＩＱＵＥＯＦＥＮＥＲＧＹ－ＡＧＧＲＥＧＡＴＥＤＥＸＰＬＯＳＩＯＮＷＡＳＳＵＣＣＥＳＳＦＵＬＬＹＵＳＥＤＴＯＲＥＭＯＶＥＡＣＣＲＥＴＩＯＮＯＦＢ．Ｆ．ＩＮＸＵＺＨＯＵＩＲＯＮＡＮＤＳＴＥＥＬＧＥＮＥＲＡＬＰＬＡＮ...     

石钢300m^3高炉计算机人工智能炉况预报系统简介

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技术信息

技术信息国内首台２５ｔ直流钢包炉在安钢投产ＳＴＡＲＴ－ＵＰＯＦＦＩＲＳＴＤＯＭＥＳＴＩＣ２５ｔＤ．Ｃ．ＬＡＤＬＥＦＵＲＮＡＣＥＡＴＡＮＹＡＮＧＩＲＯＮ＆ＳＴＥＥＬＧＲＯＵＰＣｏ．安阳钢铁集团公司于１９９５年与北京科技大学、鞍山热能研究院合作，对原２５...     

LF（钢包炉）固体合成渣脱硫工业性试验研究

以３０ｔＥＢＴ超高功率电炉为初炼炉和４０ｔＬＦ（钢包炉）作为精炼炉，使用ＣａＯ－ＣａＦ２系固体合成渣对Ｑ２３５钢进行钢包炉内脱硫工业试验，在本试验条件下，当ＥＢＴ电炉初炼钢液（Ｓ）初＝０．０３５％～０．０８１％时，最佳精炼渣碱度Ｒｂ＝（％ＣａＯ）／（％ＳｉＯ２）为２．０～２．６或Ｒｆ＝（％ＣａＯ）＋（％ＭｇＯ）／（％ＳｉＯ２）＋（％Ａｌ２Ｏ３）为１．５～２．０，渣指数（ＣａＯ）／（ＳｉＯ２）：（Ａ     

从FOXBASE＋到FOXPRO2.5的转换是如何实现的

ＦＯＸＰＲＯ是ＦＯＸＳＯＦＴＷＡＲＥ公司ＦＯＸＢＡＳＥ＋１．１２，２．００，２．１０等软件之后，推出的ＦＯＸ数据库应用系列的又一杰出产品，它具有对信息的分类、检索和处理等功能。目前，鞍钢正在运行的微机管理软件大多是用ＤＢＡＳＥⅢ及ＦＯＸＢＡＳＥ＋系列语言编制的，随着ＦＯＸＰＲＯ的出现，使ＦＯＸＢＡＳＥ的各种功能及编程人员的工作环境有了极大完善。因为大多数计算机编程人员对ＦＯＸＰＲＯ了解不多，因此通     

钢筋混凝土构件的高层化和开发高强度钢筋

钢筋混凝土构件的高层化和开发高强度钢筋ＤＥＶＥＬＯＰＭＥＮＴＯＦＨＩＧＨ－ＳＴＲＥＮＴＨＲＥＩＮＦＯＲＣＩＮＧＢＡＲＳＩＮＴＩＳＥ－ＵＰＲＥＩＮＦＯＲＣＥＤＣＯＮＣＲＥＴＥＢＵＩＬＤＩＮＧＳ摘自《材料》，１９９３，Ｖｏｌ．６，Ｎｏ．５，１４８１，１４...     

Cold model studies of mixing and mass transfer in steelmaking vessels

Abstract

Room temperature model studies using water to simulate 'metal' and paraffin oil (when required) as 'slag' were conducted to study the extent of mixing and the rate of mass transfer between metal and slag in the 130 t basic oxygen furnaces (BOFs) in operation in Tata Steel. Several systems of gas injection including top blowing, combined blowing and exclusive bottom purging were investigated. Similar work was undertaken in a room temperature model of an 80 t energy optimising furnace (EOF), in operation for a brief period earlier in Tata Steel. Details of the optimum blowing conditions, including the number/distribution of bottom tuyeres for the BOFs, are elaborated in the present paper. How mixing/mass transfer in an EOF compares with the BOF case(s) is also highlighted.     

Challenges and Opportunities for Long Product Speciality Steels in India

Metallic and operating cost as well as specific energy consumption are the key to long term viability of steel plants. Usha Martin achieved the highest directly reduced iron (DRI) rotary kiln campaign life which is a good case study for Indian steel makers who consume large quantities of DRI produced through the rotary kiln route. The factors affecting rotary kiln life and how the kiln life was extended at M/s Usha Martin have been elaborated in this study. Energy optimizing furnace (EOF) has good potential for steelmaking in India and it is technically and commercially viable with indigenously available raw materials. The advantage of EOF in the Indian context especially for mini steel plants not having captive mines is highlighted.     

Dynamics of capillary electrochromatography experimental study on the electrosmotic flow and conductance in open and packed capillaries

For capillary electrochromatography (CEC) to become an analytical separation technique of high speed and resolution the factors determining the conductivity of the column as well as the generation and control of electrosmotic flow (EOF) in porous media have to be understood. In the present study the conductance of capillaries packed with a variety of stationary phases was evaluated with respect to the conductance of the open capillary and the data were interpreted in the light of the Tobias equation. However, the consistently observed reduction of the EOF when a capillary having a charged inner wall is packed with particles having charges of the same sign and the dependence of the EOF velocity on the particle size needs further explanation. The data suggests that, due to the employment of relatively long columns packed with small particles, CEC may offer peak capacities much higher than HPLC or micro-HPLC. The CEC columns are unique as they consist of a packed and an open capillary segment having different conductances and consequently different voltage gradients and electrical field strengths. Therefore, any sufficiently detailed study on CEC systems requires also the characterization of the individual column segments. EOF velocities of 6-7 mm/s could be realized at 60 kV applied voltage with a 23/32 cm x 50 microns raw fused-silica capillary packed with 6-micron Zorbax ODS particles. The current was a linear function of the field strength up to 1.8 kV/cm, but at high field strengths the EOF increased with squared field strength. Data on band spreading indicate that with a given column the plate height at high EOF velocities is smaller in CEC than in micro-HPLC and it is weakly dependent on the velocity.     

Effect of the Composition of Anodic Purging Solutions on Electroosmosis

The objective of this study is to investigate the effect of the composition of anodic purging solutions on electroosmosis in an electrokinetic (EK) system. The effect of buffering capacity of anodic purging solutions on electroosmosis was first studied. With the increase of buffering capacity, soil pH and electric current increased, but the maximal cumulative electroosmostic flow (EOF) was achieved with 0.010?mol/L Na2CO3/NaHCO3 buffer. Na2CO3/NaHCO3 containing NaCl and Na2SO4, respectively, were used as anodic purging solutions to investigate the effect of cation concentration and anion type on electroosmosis. The increase of cation concentration led to the increase of soil pH and electric current but the decrease of EOF. At the same cation concentration, Na2SO4 resulted in higher electric current and greater EOF than NaCl, but similar distribution of soil pH. The present study provides useful information for the selection of purging solution in the EK remediation of contaminated soils.     

首钢京唐1号高炉炉芯温度初探

高炉炉芯温度是炉缸活跃程度的重要表征。炉芯传热可作为一维稳态传热来处理,通过建立首钢京唐1号高炉炉芯传热的计算方程,计算绘出了炉芯温度-炉缸温度、炉芯温度-陶瓷垫厚度的关系线,确定了现阶段首钢京唐1#高炉合适的炉芯温度为310～380℃,分析得出炉芯温度低时,炉缸工况差,炉芯温度和铁水温度的相关性弱。     

论重有色冶炼设备的发展趋势

本文就与重有色火法冶炼过程有关的特殊设备,如干燥、焙烧、烧结、熔炼、吹炼、精炼、烟化等设备的应用现状及发展趋势进行了较为详尽的探讨。     

龙钢1^#高炉炉料冶金性能分析

鉴于龙钢1^#高炉能耗较高和未对该高炉入炉原料及综合炉料的冶金性能做过全面分析的实际,通过对其入炉原料和综合炉料的冶金性能进行全面的测定及分析,为优化高炉炉料结构,提高高炉精料水平,促进高炉节能降耗提供依据。     

燃煤工业炉燃烧控制

在剖析了传统的ＰＩＤ控制及双交叉限幅燃烧控制的原理和优缺点之后，针对炉温要求分布均匀的燃煤工业炉窑，提出了一咱新的计算机复合控制算法，并在实际的燃为链条炉上进行了投运。其结果表明，该控制算法是行之有效的。     

高炉的大型化与长寿化

高炉的大型化已成为炼铁技术发展的主流趋势,如何实现大型高炉长寿化是目前亟待解决的问题。同时,就大型高炉的技术指标评价和炉缸炉底设计等方面提出了建议。