共查询到19条相似文献,搜索用时 734 毫秒
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介绍了宝钢1、3号300吨转炉炉壳国产化工程中采用的新型炉壳材料、新的炉体设计制造技术、新的炉体空气冷却系统以及新的炉体快速拆装等新技术,为我国大型转炉体自行设计制造、自己更新安装提供了可借鉴的经验。 相似文献
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一、概述 随着氧气转炉炼钢所占比例的提高,转炉的容量也趋加大。大型转炉炉体和托圈连接装置的合理性对改善炉壳的受力和工作状态,提高炉壳寿命,便于炉体的拆装,提高炉座的利用率,都具有重要经济意义。 本连接装置与现有连接装置相比,主要优点是: 相似文献
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转炉炉体与托圈的连接装置是转炉体系统的关键设备之一,它的结构是否合理直接影响托圈和炉壳的寿命及钢产量.文章系统介绍了一种新型实用的转炉炉体与托圈的连接装置的结构及特点. 相似文献
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宝钢300t转炉新炉型炉壳有限元法强度分析研究 总被引:1,自引:0,他引:1
对宝钢 30 0t转炉新炉型炉壳进行了有限元强度分析 ,计算结果表明 ,该炉壳在机械荷载 (炉体自重和钢水重力 )、温度荷载及热膨胀压力等联合作用下所产生的综合应力 ,在转炉炉壳的许用应力允许值之内 ;其所产生的变形 ,也在新炉型炉壳的刚度设计范围内。 相似文献
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宝钢300t转炉新炉型壳有限元法强度分析研究 总被引:1,自引:0,他引:1
对宝钢300t转炉新炉型炉壳进行了有限元强度分析,计算结果表明,该炉壳在机械荷载(炉体自重和钢水重力)、温度荷载及热膨胀压力等联合作用下所产生的综合应力,在转炉炉壳的许用应力允许值之内;其所产生的变形,也在新炉型炉壳的刚度设计范围内。 相似文献
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转炉炉壳是转炉炉体的重要组成部件,文章讨论的150 t转炉炉壳是包钢炼钢厂的主要设备。它的制作工艺是否合理直接影响到了转炉的安全使用及预期使用年限。通过包钢机械设备公司的生产实践,检验了制作工艺的合理性和可行性,达到了图纸的技术要求和相关标准要求。 相似文献
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常温下局部加载拉应力对柱壳应力场分布的影响 总被引:1,自引:1,他引:0
研究采用有限元模拟技术,考察常温局部加载条件下,加载宽度和试样尺寸对柱壳应力场分布的影响,揭示应力场的变化规律及机理.在常温下,柱壳结构局部受轴向外载拉伸时,随结构体长度的增加,在距加载区越远的横截面上应力分布越均匀;随加载宽度的增加,在结构体的中截面上应力最大值逐渐增加.当外加载荷大小、加载宽度及结构体长度相同时,柱壳结构中截面上拉应力最大值大于平板.因此可以预见,对于应用局部加载降低结构体焊接残余应力,柱壳结构要比平板结构效果更好. 相似文献
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深部矿产与地热资源共采战略为实现“矿?热”经济有效开发和实现双赢提供了有效途径,深部高温地层井巷建设技术是“矿?热共采”战略安全高效实施的重要支撑和保障。分析了深部“矿?热共采”战略对井巷建设技术需求的必要性和迫切性,梳理了矿山井巷建设技术现状和存在的不足,阐述了矿山井巷智能化建设方面的研究进展与发展路径;剖析了深部高温地层井巷建设面临的难题与挑战,提出了深部高温地层井巷工程建造技术发展的三大优先发展任务:1)深部高温地层井巷建设地质保障系统;2)深部高温地层井巷建设模式与规划;3)深部高温地层井巷建设成套技术与装备。结合三大优先发展任务,凝练出8项基础理论与关键技术的发展方向:地层原位探识与透明化重构、高温地层井巷建设工艺适宜性、高温地层非爆破破岩、深井连续提升、深部不良地层改性与围岩长期稳定性控制、深井热害治理、井巷装备智能感知、井巷掘进装备智能控制。基于以上内容,初步构建了深部高温地层井巷建设基础理论与技术研究体系,以期为深部资源开采清洁化和地热清洁能源规模化发展提供参考。 相似文献
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鞍钢新1号高炉(3200m^3)是鞍钢“十五”期间修建的一座现代化大型高炉。详细介绍了新1号高炉采用的多项当今世界炼铁高炉最先进技术,包括原燃料整粒过筛和分级入炉技术、高温内燃热风炉、串罐无料钟、高炉长寿技术、INBA炉渣粒化工艺以及富氧喷煤技术等等。 相似文献
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New shaft furnace processes have to be developed in order to use ore and dusts in pellets and briquettes with carbon to convert them into the metal phase by collapsing smelting. It has to be considered that high amounts of carbon can have negative effects on solidity of agglomerates whereas a low content of carbon can debase the smelting- and reduction behaviour. Responsible for this disintegration is, on the one hand, the emergence of volatile components and moisture and, on the other hand, the transformation mechanism, e.g. from hexagonal hematite to cubic magnetite. The swelling or shrinkage during reduction is influenced by different parameters. The melting temperature of the outer steel shell of reduced briquettes or pellets is at about 1500°C if there is no carbon solved. A metal phase can separate from a slag phase after the collapsing smelting of the shell. This is of high interest for new processes. Therefore, test series were carried out with briquetted dust mixtures from a steel works. Aims of these tests were investigations on mechanical properties, gas compositions and temperature gradients of the agglomerate during reduction. Additional tests with pelletized hematite ores and coal were made to show the influence of the reduction time and temperature as well as the carbon content. 相似文献
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Jinliang Wang Houqing Wang Changren Tong Wenhai Zhang Chuanfu Zhang 《Metallurgical and Materials Transactions B》2013,44(6):1572-1579
Based on the principle of heat transfer, a three-dimensional model of frozen slag in the brickless reaction shaft of a flash smelting furnace was established by computing the temperature field and judging the moving boundary. In the modeling process, a cylindrical coordinate system was adopted to specify the point positions according to the geometry of the brickless reaction shaft, and an improved method was proposed to discretize the three-dimensional control equations. The model was then applied to investigate the influence of the operational [gas temperature (GT), cooling water temperature (CWT), and melting temperature of frozen slag (MTFS)] and structural (steel shell thickness, steel nail thickness, steel nail length, and distance between nails) parameters on the thickness of the frozen slag. The results showed that the GT, CWT, and MTFS have a marked impact on the thickness of frozen slag, which decreases at high temperature and increases when cooled; the structural parameters have little effect on the thickness of frozen slag in terms of heat transfer. Consequently, to form a layer of frozen slag with a desired thickness inside a brickless reaction shaft, it is important to avoid localized ultra-high temperatures in the inner chamber and to cool the steel shell using a strong flow of low-temperature water; mechanical (and not thermal) factors should take precedence when designing the steel nails of a brickless reaction shaft. 相似文献