天铁集团炼铁生产管理系统实施方案综述

介绍了炼铁生产管理系统，该系统以生产计划和生产调度为主线，自顶向下将生产过程产生的信息和经营管理信息进行转换、加工、传递，使生产过程控制更加合理，实现了生产过程智能化。     

紫铜薄壁轴线卷管材线形伤的产生原因及对策

紫铜薄壁盘管生产工艺流程长，质量要求高，生产难度大。本文对其表面线状伤的产生原因进行了详尽的分析，阐明了挤压、矫直、冷轧、盘拉各工序产生表面缺陷的机理。文中介绍的措施，极大地减少了成品管的表面线状伤痕，使成品率得到大幅度提高，收到了显著的经济效益，可供生产这类产品的其他厂家借鉴。     

利用铝厂废弃物破解世界环保难题

赤泥是氧化铝生产过程中产生的废弃物，每生产1吨氧化铝约产生赤泥1．5t以上。由于此前国内外尚无有效的工业化处理方法，一般只能堆存，既占用了大量土地，又对土壤、水源、大气等造成污染，是一道世界性的环保难题。     

新技术讲座两种最新烧结烟气脱硫工艺介绍

烧结生产是钢铁生产中一个污染比较严重的环节，除了产生大量粉尘、噪音外，还产生严重的有害气体污染及热污染。如何解决烧结（包括球团）生产中各种污染是广大烧结生产工作者和环保工作者亟待解决的一个重要课题。     

冶炼烟气网络配置技术的应用

介绍金川集团公司利用闪速炉、合成炉等产生的高浓度二氧化硫烟气与电炉、贫化炉产生的低浓度二氧化硫烟气进行高低搭配，通过混合室配气，通过管道网络配置到五个硫酸生产系统，平衡烟气、稳定生产，消除低浓度二氧化硫的排放污染，实现清洁生产的实践。     

复合粉、金属粉喷涂色差原因分析及控制措施

相比单一组分的素色粉末而言，复合粉、金属粉是由不同比重、不同颜色的双组分或多组分粉末颗粒以及金属铝粉混合绑定而成。在铝型材涂装生产过程中，复合粉、金属粉类喷涂产品的生产操作难度大，颜色不稳定，极易产生色差，易导致二次返工甚至报废，增加了生产制造成本。本文充分结合该类粉末的导电吸附特性，详细分析了生产过程中色差产生的原因，通过使用新设计的隔离粉桶，并对静电电压、枪距、链速、挂料方式等各个关键环节进行管控，从而确保产品颜色均匀稳定。     

铜萃取过程产生污物的原因分析

本文结合江西铜业公司下属的几个堆浸厂铜萃取生产过程中产生乳化现象的生产实际情况进行分析，查找原因，提出了相应的缓和第三相产生的措施。     

浦项研究减排新方法

韩国浦项钢铁公司正在研究利用氢减排二氧化碳，试验利用焦炉煤气、焦油和其他产生于炼钢生产过程中的废物生产氢。浦项希望在氢合成过程中捕获产生的二氧化碳，然后将氢作为清洁能源使用。浦项表示，这是通过世界钢铁协会与其他钢铁企业合作的一项长期研究，     

全软铝板材产生气泡的经验和教训

生产全软铝板时产生气泡可能有几十个原因，但各生产工厂由于生产环境，设备、工艺的不同或有各自实际的主要原因，情况比理论上的分析要复杂得多。现简述华益铝厂有限公司自１９８３年开工以来，所遇到的两次大批量产生气泡的原因和解决问题的方法，或许对同行有所借鉴。     

废钒触媒酸性铵盐沉钒工艺回收五氧化二钒的研究

硫酸生产过程中产生的废钒触媒，采用酸性铵盐沉钒工艺处理，工艺条件易于掌握，所消耗材料品种少，设备腐蚀性小，钒的回收率较高，技术经济指标合理。回收的五氧化二钒产品符合国家产品质量标准的要求，而且生产成本低可获得较好的经济效益。生产过程中产生的固体残渣制成水淬渣，作为水泥配料外售，气体和液体废弃物可以进行回收利用，整个生产过程不会对环境产生污染，同时降低危险固废储存过程潜在风险，环境效益显著。     

Slab-on-Grade versus Framed Slab

This paper presents comprehensive and practical engineering review (not mathematics or computer science paper) of the observed behavior of the two types of slabs that have been used for the bottom floor slabs, at grade and underground, of buildings in the United States and overseas. The typical design of the slab-on-grade (SOG) built in the United States is described. The design requires only nominal reinforcing steel, but modern day design also requires ground preparation and improvement as necessary, including underslab perforated drainage pipe network embedded in the granular subbase, riser pipes, and a series of pumps. Sealing at all slab isolation joints and waterproofing membrane or water barrier system are provided for water tightness. The framed slab is supported directly on the building framing and on the building foundation. The design can accommodate the soil and underground water pressure and in itself is watertight as the slab is cast monolithically with the structural walls and footings. The behavior of the SOG depends so much on the behavior (soil properties) of the soil strata on which the slab is resting on. It is sensitive to the variation of the soil conditions at and around building foundations, leading to uneven bumpy and cracked slab and leaking basement. These were demonstrated in the report of short- and long-term performances of various projects in Thailand and United States in the past 25 years. The paper refers to various analysis and design techniques that may be used to improve the design of both the SOG and the framed slab for serviceability and economy. It is concluded that both types of slabs may be selected to suit the functions and serviceability requirements of the buildings. The SOG requires less concrete and reinforcement than those for the framed slab counterpart, but when all other factors are considered including additional underslab drainage and pump system, operating, and long-term performance and maintenance, the overall costs of both slabs may not be far apart, yet the performance and integrity of the framed slab will certainly be superior.     

不同市场条件下金属露天矿分期方案动态优化

不同市场条件下金属露天矿分期方案动态优化有关于金属露天矿分期方案动态优化的整体方案的设计与实施,是结合采选联合优化的一部分内容,针对地下采选一体化实现的露天金属矿采选联合优化,露天金属矿采选联合优化也是与金属露天矿分期方案动态优化相关,对于采选联合优化的选矿过程都是存有金属露天矿分期方案动态优化的内容,这就需要施工人员和设计者在涉及到井下的内部转化以及其他金属露天矿分期方案动态优化部分的过程中能够对于一些采选联合优化的内涵做出详尽的了解和分析。比如地下采矿中通常采用一体化设计,但是这种设计的缺点就是难以进行露天金属矿采选联合优化,但是对于矿山开展的试验性研究工作还是有利的,能够实现按空间位置的一体化是采选联合优化的内涵及发展历程的关键。     

以数字基建支撑钢铁行业内涵式发展

 为了研究数据在钢铁行业的生态化利用问题,介绍了中国钢铁行业发展面临的新形势,以及新发展阶段对钢铁企业的新型能力要求,阐述了钢铁行业存在的问题及发展趋势,分析了钢铁行业数据资源特点及数字赋能基础,数据要素与土地、劳动力、资本、技术等传统生产要素不断交叉融合,从提升企业核心竞争力、优化行业资源配置、支撑政府行业治理3个层面,总结了钢铁行业数据发力的重点领域,提出以基于区块链的“数字基建”构建行业新型信用体系,支撑钢铁内涵式发展。     

铜萃取电积厂的设计探讨

根据长期的设计工作经验和生产实践,针对铜萃取电积工艺设计的相关问题进行探讨,并提出适用的设计方案。其中,工艺部分包括铜萃取电积工艺方案的确定、萃取剂的选用、相连续的控制等;设备及厂房布置部分探讨了设备和管路的适宜材质,溶液池容积和结构形式、设备选择和厂房布置方式;根据车间生产介质的性质采用相应的消防方式;最后介绍了该工艺的投资成本及技术经济指标。     

Analysis of Arch Dams Using Coupled Trial Load and Block Element Methods

This paper presents the use of the trial load method and the block element method with elastoviscoplastic discontinuities for analysis of arch dams. The arch dam is considered as an arch-cantilever system and the foundation as a block element system. With the displacement compatibility condition at the contact surface of the dam and the foundation (including abutment), the governing equations of the arch dam and foundation are established. These methods are used for the analysis of the double curvature arch dam with complex geology conditions of the Xiaowan Hydroelectric Project in China. The deformation and stress states in both the dam body and the foundation are determined. Furthermore, the stability safety factors of the foundation and the abutment are calculated at the same time, which allows for an optimal design of the arch dam considering the strength, the deformation and the stability of the dam and foundation.     

火炮身管用钢现状及发展趋势

火炮身管用钢决定了身管类武器的使用性能，影响火炮的作战持续性与机动性。通过对国内外火炮身管用钢合金成分体系、制造工艺流程、材料主要性能指标总结分析，指出当前国内外炮钢主要牌号、性能水平以及存在高温性能不足的问题。通过调研国内外火炮用钢最新研究成果以及身管武器整体技术需求，总结和展望了火炮身管用钢的研究现状和发展趋势，针对大口径火炮研制高强韧炮钢以减轻壁厚和质量，针对中小口径速射火炮研制耐烧蚀性能炮钢以提高使用寿命。     

RC Slabs Strengthened with Prestressed and Gradually Anchored CFRP Strips under Monotonic and Cyclic Loading

This paper presents the test results of reinforced concrete slabs strengthened with prestressed and gradually anchored carbon fiber–reinforced polymer (CFRP) strips under monotonic and cyclic loading. To take full advantage of the externally bonded CFRP technique, it is beneficial to apply the laminates in a prestressed state, which relieves the stress in the steel reinforcement and reduces crack widths and deflection. The aim of the monotonic tests was to determine the strengthening efficiency of the new prestressing technique and to investigate serviceability and ultimate states. The cyclic tests were performed to identify the fatigue behavior of the strengthened slabs and to investigate the influence of long-term cyclic loading and elevated temperature on the bond properties of the prestressed CFRP laminates and the ductility and flexural strength of the strengthened slabs. A nonlinear analytical model of reinforced concrete members strengthened with passive and prestressed CFRP strips under static loading is proposed in the paper. A comparison of the experimental and predicted results reveals an excellent agreement in the full range of loading.     

Time for Development of Internal Erosion and Piping in Embankment Dams

A method is presented for the approximate estimation of the time for progression of internal erosion and piping, and development of a breach leading to failure in embankment dams and their foundations. The method accounts for the nature of the soils in the dam core, the foundation, and the materials in the downstream zone of the dam.?Guidance is also provided on the detectability of internal erosion and piping, taking account of the mechanism of initiation, continuation, and progression to form a breach, for internal erosion and piping in the embankment, the foundation and from the embankment to foundation.?It is shown that in many dams which have poor internal erosion and seepage control and are constructed mainly of earthfill, the time for potential development of piping is short, and for these dams continuous monitoring of seepage or surveillance would be needed to detect the piping in time to give warning of possible failure, and to give time to attempt intervention to prevent the failure.     

高炉炼铁数据缺失处理研究初探

针对高炉炼铁过程中的数据缺失问题,提出以单维结合多维的系统化数据填补模式。总结并阐述数据缺失填补办法的发展现状以及优劣势比较。在此基础上,通过对河北某钢铁厂的实际高炉生产数据进行分类比较,并结合填补办法的优缺点,针对高炉炼铁数据提出一套以简单统计类办法、线性插值法、机器学习法等多种办法相结合的方案,以实现高炉数据的深度整合及处理,满足数据挖掘工作的供数需求。同时选取了炉顶温度、氧气管道温度作为数据样本,利用临近点中间值法、临近点均值法、线性插值法、Adaboost算法等对样本数据进行了填补且填补效果较为理想,充分验证了方案的可行性。     

VDC and the Engineering Continuum

In this paper, we provide a brief overview of the historical underpinnings of the design-construction industry and the development of design engineering and construction engineering as independent but related subdisciplines of civil engineering. The effects of the first and second generation of computer tools on design engineering are identified. The complementary and evolving definitions of construction engineering and design engineering are examined, specifically in the context of structural design engineering activities and deliverables and the corresponding construction engineering activities and deliverables. The concept of an “engineering continuum” is introduced, and the process is recast in light of that concept. Several case studies are used to examine the promise of third generation design-construction computing technologies such as virtual design and construction and their potential beneficial impact on the cost and schedule of the typical design-construction project. Refinements to the definitions of construction and design engineering that have the potential to maximize the benefits of third generation technology are proposed with an eye toward the form of fourth generation computing technologies that are on the horizon.