烧结机跑偏原因分析及处理

烧结机台车运行过程中跑偏,是烧结机设备运行的普遍问题,在烧结机检修期间,对烧结机平面轨道、回车道、头、尾弯道进行了部分更换,对尾部星轮齿板不同步现象进行了调整,有效地解决了烧结机台车跑偏问题,提高了设备作业。本文通过实例对烧结机台车跑偏的各种原因进行分析,并提出相应的处理方法,降低了烧结机漏风率,确保了烧结机的正常运行。     

烧结机系统密封性创新改造与实践应用

联合特钢中一台230m2烧结机由于使用年限较长,烧结机漏风率达到55％,已影响到了烧结矿的产能和能耗,因此有必要对其系统密封性进行创新改造.本文主要是从烧结机系统密封性考虑,根据该烧结机密封状况的跟踪调查结果,确定了烧结机主要漏风部位,并结合当前烧结机创新性密封技术提出了改造方案.通过烧结机头机尾密封、台车滑道密封、台...     

国内首台17.5m^2环型烧结机投入生产

目前。我国使用的带式烧结机特别是一些小型带式烧结机,结构上存在着一些弊端,如设备利用率低、能耗高、台车工作条件恶劣和占地面积大,而环型烧结机与带式烧结机相比具有设备制造简单、费用低、占地面积小、厂房标高低、维修方便等优点,可广泛用于中、小钢铁企业的烧结厂,代替小型带式烧结机。     

宝钢3号烧结机扩容改造实践

对宝钢3号烧结机扩容改造实践进行了总结。3号烧结机扩容改造的主要内容有:烧结机台车改造、烧结机给料装置改造、尾部罩改造、骨架改造、导料槽改造、单辊破碎机密封罩改造、点火保温炉改造、过程检测与自动控制改造等。3号烧结机通过扩容改造,平均生产率达到32．26t/(m2·d),提产幅度达到14．6％,超过烧结机扩容 10％、产能提高10%的预期目标。     

烧结机低漏风综合密封技术及其在宝钢湛江的应用

针对烧结机的漏风问题,分析了其漏风原因,找出了相应的漏风环节,在此基础上介绍了中冶长天开发的低漏风综合密封技术—负压吸附式端部密封技术、新型滑道密封技术、烧结机台车密封技术、气动双层卸灰阀技术等。并采用烧结机台车空载静态密封测试与烧结机台车额定负载动态测试相结合检测烧结机漏风率的方法对实施低漏风综合密封技术的湛江烧结机进行了漏风检测,烧结机本体漏风率为17.59%,与普通烧结机相比,漏风率下降比例近50%,符合国家节能减排、降本增效的产业化政策。     

烧结机漏风治理改造与实践

通过对烧结机台车栏板、机头与机尾密封、弹性滑道、润滑系统、风箱和卸灰阀等系统进行研究和技术改造,解决了烧结机漏风严重、设备磨损严重、能耗偏高等影响烧结机产能提升的问题,降低了烧结机漏风率和烧结生产能耗,提升了烧结机产量和质量,并创造了可观的经济效益。     

烧结机热膨胀处理

本文以宝钢450米~2烧结机为例,详细介绍了烧结机各部位(包括烧结机机架、移动式尾端、烧结机台车,风箱及抽风管道等)热膨胀的处理方法,并提供了大量有参考价值的数据。     

涟钢180m~2烧结机台车跑偏原因分析及处理

涟钢180m~2烧结机台车运行过程中跑偏严重,在烧结机年检期间,对烧结机平面轨道调整、固定滑道、返回道、头部弯轨、主机台车等进行了更换,对头部星轮非驱动端轴承座上翘问题进行了调整校对,有效地解决了烧结机台车跑偏问题,提高了设备作业率。本文通过实例对涟钢180m~2烧结机台车跑偏的各种原因进行分析,并提出相应的处理方法在年检期间实施,降低了烧结机漏风率,减少了台车备件的非正常消耗,确保了烧结机的正常运行。     

安钢烧结机扩容改造及生产效果

介绍了安钢对原有2×24m2带式烧结机扩容改造的主要项目,即采用新型点火器、改进烧结机密封装置、烧结机台车和主抽风机等。通过改造,两台烧结机具备了年产120万t以上烧结矿的生产能力。烧结矿质量改善,取得了显著的经济效益。     

德国HKM烧结机尾烟气循环LEEP技术

<正>在烧结过程中,各种烧结废气的含量在烧结机长度方向上并不是均匀分布的,烧结料中的水分主要在烧结机前半部排出,较高浓度的硫氧化物、氯化物和PCDD/F主要在烧结机的后半部排出,CO、CO_2和NO_x沿烧结机均匀分布。LEEP技术是将烧结机后半部排放的所有废气收集,沿整个烧结机身返回到系统,循环废气中的氧气提供燃料燃烧所     

Design and optimisation of charging ingredients and structure in an ironmaking system (Part II)

In order to maximise the reduction of pig iron cost in an ironmaking process, and at the same time ensure the output and quality of the pig iron, a design and optimisation system for the charging ingredients and structure in an ironmaking system was established using metallurgical theory. The system includes six modules, namely, sinter metallurgical performance testing and analysis, sintering burdening design, sinter component and property prediction, blast furnace burdening design, blast furnace batching calculation and ironmaking system burden optimisation. Based on actual production, testing and material balance theory, the system integrated these modules on VB and MATLAB using a series of intelligent algorithms, such as the BP neural network, multiple objective linear programming, genetic algorithms and so on. As a result, the optimum burden composition and structure of the sinter and blast furnace that satisfied all the constraint conditions could be obtained. Standing as a pinnacle of the global ironmaking production, the system can design and optimise not only the sintering burden, but also the blast furnace burden. Compared with the traditional production testing and hand calculation in the ironmaking system, the project can greatly reduce the production risk and greatly increase the calculation accuracy. Industrial application shows that the system is especially beneficial to reduce the ironmaking cost and at the same time ensure the output and quality.     

Impressions of psychotherapists' offices.

For counseling settings, research suggests that softness, personalization, and order might affect the experience and the perceived expertness, trustworthiness, and social attractiveness of the therapist. This article discusses exploratory studies on college students' perception of the counseling office environment and whether the likely client experience was associated with the softness/personalization and order of the office. As stimuli, the studies used 30 color photographs of psychotherapists' offices viewed from the client's perspective. After obtaining ratings of the characteristics of each office, we obtained ratings from different groups of students of the quality of care and comfort expected in each office (Study 1) and how qualified, bold, and friendly the therapist in the office would be (Study 2). Additional studies examined the likelihood of choosing a therapist based on the office, and the first thought or feeling that came to mind about the office, the therapist, and the patient experience. There were strong correlations in response between groups (by whether they had experienced therapy; their level in school; their gender; and their major, location, and school size). The quality of care, comfort, therapist boldness, qualifications of the therapist, and the likelihood that one would choose a therapist based on the office improved with increases in the office's softness/personalization and order. Friendliness improved with increases in softness/personalization. The office choices, open-ended responses, and reported reasons for the ratings confirmed the importance of softness (comfort) and order. Research should test longer term exposure and behavior. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Lunar Astronomical Observatories: Design Studies

The best location in the inner solar system for the grand observatories of the 21st century may be the Moon. A multidisciplinary team including university students and faculty in engineering, astronomy, physics, and geology, and engineers from industry is investigating the Moon as a site for astronomical observatories and is doing conceptual and preliminary designs for these future observatories. Studies encompass lunar facilities for radio astronomy and astronomy at optical, ultraviolet, and infrared wavelengths of the electromagnetic spectrum. Although there are significant engineering challenges in design and construction on the Moon, the rewards for astronomy can be great, such as detection and study of Earth‐like planets orbiting nearby stars, and the task for engineers promises to stimulate advances in analysis and design, materials and structures, automation and robotics, foundations, and controls. Fabricating structures in the reduced‐gravity environment of the Moon will be easier than in the zero‐gravity environment of Earth orbit, as Apollo and space‐shuttle missions have revealed. Construction of observatories on the Moon can be adapted from techniques developed on the Earth, with the advantage that the Moon's weaker gravitational pull makes it possible to build larger devices than are practical on Earth.     

Development Model for Competitive Construction Industry in the People’s Republic of China

This paper identifies and analyzes the open-policy trend of the Chinese construction industry, which is characterized by trade liberalization, the underlying principle of the World Trade Organization (WTO). Compared to the construction industries in the United States, Japan, and the U.K., the construction industry in China is less developed in its legal framework, industrial structure, technological level, and international market share. To develop a competitive construction industry, the Chinese construction industry needs not only to accommodate appropriate international practice, but also to adapt and adopt it according to the market environment in China. A model to enhance the performance of the Chinese construction industry is proposed. The model consists of six modules: defining government’s role, opening up the construction market and establishing a competitive mechanism, promoting design institutes’ services and empowering professional bodies, encouraging technological innovations, upgrading employees’ educational level, and adopting multiprocurement routes. Recognizing China’s recent accession to the WTO and the attendant boost to its economy and industry development, the paper gives a timely evaluation of the post-WTO Chinese construction industry and proposes a model for its development. The model may serve the needs of academics, Chinese construction policymakers, construction enterprises, design institutes, and foreign contractors.     

ICP-AES法测定硅铝钡铁合金中Al、Ba等9种元素含量

采用电感偶合等离子体分析技术,通过优化电感偶合等离子体光谱仪的工作参数、分析条件,选取仪器最佳分析参数和分析条件,以HNO3、HF、HClO4处理样品,稀盐酸浸取,完成硅铝钡、硅钙钡和硅钙钡铝铁合金中Al、Ba、Fe、Ca、Mn、Cu、Cr、Ni、P9种主次量元素成分的同时测定,方法的回收率达96%～104%,相对标准偏差〈1.5%,能够满足快速分析的要求。     

Review of Attachment in psychotherapy.

Reviews the book, Attachment in psychotherapy by David J. Wallin (see record 2007-05421-000). This intellectual and clinical tour-de-force is what we have been waiting for: a book that is on the one hand a coherent, creative, thoughtful, and remarkably integrated view of contemporary psychoanalysis, with attachment, and attachment processes, at its core, and on the other a reflection on our daily, complex, work with patients. The book has three broad aims: first, to ground the reader in attachment theory and research, second, to broaden the reach of attachment theory by building bridges to other aspects of contemporary psychoanalytic theory and science, and third to apply this broader, deeply psychoanalytic, clinical attachment theory to understanding the dynamics of an individual patient and the dynamics of clinical work. This book should be essential reading for anyone interested in contemporary psychoanalysis. Few writers have the ability to write so directly and clearly about complex science and theory; his scholarship and reach are extraordinary. This book is also a book for therapists at all levels of experience. Throughout every section of the book, Wallin writes about his work with patients, about the therapeutic process, about the therapeutic situation, and about the therapeutic relationship, in all its complexity. In the end, he creates a truly contemporary vision of human development, affect regulation, and relational processes, grounded in the body and in the brain, and in the fundamental relationships that make us who we are, as therapists, as patients, and as human beings. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

巩固循环经济成绩,完善体制机制建设

循环经济强调物质、能量循环利用在时间——空间配置上的可能性和合理性,要求自然资源在不断循环中持久利用。围绕循环经济系统观、经济观、价值观、生产观和消费观,结合金川集团自有矿产资源现状与特点,突出如何高效利用矿产能源资源,总结"十一五"以来资源综合利用与循环经济产业取得的成就,坚持把资源节约放在首位,建议集团公司按照"减量化、再利用、再循环、替代化、产业共生网络化和修补化"原则开展循环经济体系与产业建设,加强政策研究与运用,完善循环经济基础制度和管理体系建设,突出循环经济技术攻关工作,创造有利于循环经济发展的环境,促进矿产资源高效利用。     

矿产资源科学开采及其复杂性研究

在“碳达峰”、“碳中和”的目标背景下,绿色低碳、清洁高效成为资源开采的新要求,也对科学开采这一复杂系统问题的研究提出了新的方向。阐述了矿产资源开采理念的发展演化,综述了近年来国内外在科学开采方面的研究现状,构建了安全、高效、绿色、低碳、经济、科学管理“六位一体”的科学开采体系,丰富了科学开采的内涵和框架。从复杂科学问题的判断标准、科学开采体系的特征两方面进行推断,得出科学开采属于复杂问题,承载科学开采复杂问题的系统是复杂系统。以复杂科学的思路研究科学开采的复杂性,构建科学开采复杂系统模型,从顶层设计、中层连接和底层基础3个层次思考了实现科学开采的新途径,为实现矿产资源的科学开采提供了新的发展方向。     

低碳高效高炉的设计研究

高炉炼铁的物理本质是铁素物质流在碳素能量流的驱动和作用下,按照设计的流程网络和运行程序,经过一系列复杂物理化学冶金反应过程,将铁矿石转变/转化为液态生铁的过程。碳素不仅是铁矿石还原过程的能量驱动源,也是生成铁水的重要非金属合金元素。面向全球“碳达峰”“碳中和”的发展形势,传统高炉必须在已有工艺技术的基础上进行改进、优化和创新,努力实现低碳化、高效化、绿色化、智能化等多重目标。提出了未来高炉在实现高效低碳的同时,必须从功能设计、装备设计和流程设计入手,遵循节能减排、低碳绿色新的发展理念,通过工艺优化、结构优化和技术开发,使传统高炉更加适应于炉料结构和燃料结构的变革,减少焦炭消耗和对其依赖,在碳素能量输入降低的条件下,形成新的耗散结构体系,进而实现高炉低碳高效炼铁的工程演进和技术发展。