"小型水冷模块"在安钢4号高炉后期炉衬修补中的应用

本文介绍了“小型水冷模块”在后期高炉上的应用,高炉应用后,很好好解决了后期高炉冷却壁漏水后所带来的一系列问题,保证了高炉的安全生产,有利于高炉的操作。     

本钢炼铁厂5号高炉专家系统应用实践

针对本钢开发高炉专家系统的背景和高炉专家系统的概念作了简单介绍,分析了本钢5号高炉专家系统的结构、软硬件配置情况及其应用功能,阐述了配料模型、渣铁平衡模型和炉缸侵蚀模型的应用,根据高炉专家系统运行期间发生的问题,提出了影响高炉专家系统运行的主要因素,并结合应用提出了开发高炉专家系统的一些建议。     

太钢炼铁厂五高炉专家系统应用实践

对太钢开发高炉专家系统的背景和高炉专家系统的概念作了简单介绍,分析了太钢五高炉专家系统的结构、软硬件配置情况及其应用功能,阐述了配料模型、渣铁平衡模型和炉缸侵蚀模型的应用,根据高炉专家系统运行期间发生的问题,提出了影响高炉专家系统运行的主要因素,并结合应用提出了开发高炉专家系统的一些建议。     

高炉炼铁过程数学模拟的研究进展

 高炉是最复杂的冶金反应器之一。为了更好地理解、优化和智能控制高炉炼铁过程,人们开发出大量的高炉数学模型。回顾了全高炉反应动力学数学模型的发展历程,重点介绍了典型研究成果——多流体高炉数学模型的创建实例及其应用;概述了国内外高炉智能专家系统的开发和应用情况;对高炉数学模型的未来发展做出了若干展望,指出CFD-DEM高炉模型、全高炉综合数学模型和专家系统的有机结合是未来高炉过程数字化和控制的发展方向。     

高炉专家系统在太钢高炉的应用

对太钢高炉专家系统作了简单介绍,分析了太钢高炉专家系统的主要功能,重点阐述了应用效果较好的配料模型、热风炉优化/控制模型、炉身仿真模型和炉缸侵蚀模型的应用情况,根据高炉专家系统运行期间发生的问题,提出了影响高炉专家系统运行的主要因素,并结合应用提出了开发高炉专家系统的一些建议。     

顺行指数在马钢高炉上的应用

简要阐明了顺行指数的概念,顺行指数与高炉关键指标的关系,以及如何应用顺行指数评价高炉运行状态。结合案例分析,重点阐述了马钢2500m~3和4000m~3高炉如何应用顺行指数进行数值分析,实现高炉运行状态的量化管理。实践表明,应用顺行指数可为高炉操作调整提供依据,马钢大型高炉实现了长时间炉况稳定顺行,2500m~3和4000m~3高炉的燃料比分别下降了9 kg/t和26 kg/t。     

高炉铝炭砖的生产与应用

本文着重阐述了研制高炉铝炭砖的依据以及生产技术措施,并简要介绍了铝炭砖在高炉上的应用情况,指出高炉铝炭砖是高炉内衬更新换代的理想材料,具有广阔的应用前景。     

宝钢高炉长寿命实践

对宝钢高炉20年的长寿实践进行了总结分析。经历了几次高炉寿命制约因素的转变,通过高炉长寿系统工程技术开发和实际应用,宝钢高炉长寿技术取得突破,逐渐形成了具有宝钢特点的大高炉强化冶炼基础上的高炉长寿生产维护技术,使高炉长寿挑战更高目标。     

铜冷却壁应用经济性浅析

计算了铜冷却壁相对于铸铁冷却壁的投资增加额.列出了高炉应用铜冷却壁后发生变化的相关成本因素.以2 000m3高炉为例计算了大高炉应用铜冷却壁的主要效益.分析了300～600 m3小高炉使用铜冷却壁的经济可行性.得出的结论是,应用铜冷却壁不论对大高炉还是中小高炉都能产生良好的经济效益.     

高炉砌筑用新型泥浆的应用与发展

高炉砌筑用耐火泥浆与耐火砖衬一样,承受着高炉内各种侵蚀,其性能优劣影响着高炉内衬的使用寿命,介绍了几种高炉常用的新型泥浆,并总结了它们在鞍钢高炉应用的效果。     

TC-136 氧/氮仪分析气路的改进

通过一次气路故障特例，分析了气路的工作原理和工作状态，利用仪器的气路特点和工作进程不同阀态，在无备件情况下，利用自身零部件进行修复，及时排除了故障，有效地延长了仪器的使用寿命。     

稀土在汽车尾气净化中的应用

阐述了汽车尾气催化净化工艺中用稀土代替贵金属的必要性和可能性。叙述了三元（效）催化剂的类型和组成，稀土在三元催化剂中的作用及其应用前景和市场潜力。指出开发稀土三元催化剂并使之产业化有利于解决我国严重的环保问题，有利于我国稀土工业向高技术产业转轨。     

3D‐FE Modelling and Simulation of Multi‐way Loading Process for Multi‐ported Valves

Multi‐ported valves are widely used in the marine, sanitary, petrochemical and power industry. Multi‐way loading forming technology provides an efficient approach for integral forming of high strength multi‐ported valves, such as tee pipe coupling, high‐pressure cross valves, large‐scale complex valves, and so on. Since the multi‐way loading process is a very complicated plastic forming process due to the complexity of loading path, finite element numerical simulation is adopted to investigate the multi‐way loading process in order to predict and control the multi‐ported valve forming process. A reasonable model of the process is developed under DFEORM‐3D environment based on the coupled thermo‐mechanical finite element method. Then the reliability of the model is validated with respect to geometry development and forming defects. Numerical simulations of multi‐way loading forming for a tee valve and a cross valve have been carried out via using the developed model. Further, the forming processes of tee valve and cross valve have been compared. Moreover, the modelling method is also suitable for multi‐way loading processes of other complex components.     

Open laparoscopic approach--an alterative to the Veress needle. Experiences after 1,000 laparoscopies

A mini-laparotomy as described by Hasson was used in a modified way in 1000 laparoscopic procedures. In comparison with the insertion of a Veress needle we find the open approach to be a safer and quicker way of obtaining pneumoperitoneum.     

溴酸钾氧化甲基绿催化光度法测定痕量钯

研究了稀硫酸介质中痕量Ｐｄ（Ⅱ）催化溴酸钾氧化甲基绿的褪色反应及动力学条件，建立了高灵敏度测定痕量Ｐｄ（Ⅱ）的新催化光度法。方法的灵敏度为５６７×１０－１２ｇ／ｍｌ，线性范围为０～０１μｇ／２５ｍｌ。用于测定矿石中的痕量钯，结果较好。     

The leader's role in building collaborative teams

The future requires a new way of leading. The team concept has been recognized as playing a principle role in this new order, but teams mistakenly have either been added or overlaid on existing responsibilities and ways of doing business and often have not been as effective as intended. Therefore, there needs to be a fundamental change in the entire concept of organization structure itself, and a paradigm shift in the way we think about teams. Teams must be truly collaborative. The collaborative team structure is presented as the way to successfully adapt to the challenges of the late 1990s and the 21st century.     

企业如何实现持续性盈利

营销是企业实现市场价值最大化的有效途径。而优秀的营销模式是企业实现盈利的重要环节。一个企业要实现持续性的盈利,就要处理好竞争与非竞争之间的转化,并在不同时期选择好最适合的营销策略。     

酸碱联合吸收废气法在湿法冶炼中的应用

由硝酸分银、王水分金为主要提取手段的湿法冶炼工艺是处理氰化金泥较为有效的方法,但该工艺在反应过程中产生大量酸性气体,有效处理湿法冶炼所产生的酸性气体是完善湿法冶炼工艺的重要环节,本文所介绍的酸碱联合吸收废气法在湿法冶炼生产实践中的应用表明该方法可以有效处理湿法冶炼中的酸性气体,并具有转化污染气体再次利用和回收贵金属的优点,可以取得良好的经济效益和社会效益。     

声波清灰系统在电除尘器的应用及分析

分析了国内烧结、球团工艺电除尘器大多采用的顶部电磁振打和侧部摇臂锤振打两种机械振打方式的缺点。提出了采用声波清灰与机械振打相结合的方式以及单独使用声波清灰的方式,这两种方式具有提高除尘效率、降低烟粉尘排放浓度等优点,完全可以在电除尘器上推广应用。     

A New Route for Identification of Precipitates on Austenite Grain Boundary in an Nb-V-Ti Microalloyed Steel

 The precipitates on austenite grain boundaries in an Nb-V-Ti microalloyed steel have been investigated by transmission electron microscope (TEM) examination of carbon extraction replica. The replica was prepared from specimen etched with saturated picric solution rather than Nital which is conventionally used. Then particles on both grain boundaries and triple point of grain boundaries were clearly observed and identified as (Nb,Ti)(C,N) particles. In case of conventional way, it is difficult to determine the location of particles with respect to austenite grain boundaries. The number of particles observed in new way developed was greatly reduced compared with that found in replica prepared by the conventional way, which may be caused by the dissolution of partial precipitates during the etching with longer time and at higher temperature involved in new way. Despite this, the new way developed provides an effective way to determine the precipitate particles on austenite grain boundaries.