首钢股份1号高炉炉底长寿效果分析

对首钢股份1号高炉炉底长寿应用效果进行了分析.重点从高炉炉底结构、生产操作及维护、炉底损调查结果等方面进行了探讨,认为1号高炉采用的炉底结构及刚玉莫来石质陶瓷垫,能够满足工作年限达到15年以上,一代炉役单位炉容产铁量大于1万t/m3的长寿要求.建议今后可以通过提高陶瓷垫的密度,降低气孔率和气孔直径等方法,来抑制铁水对陶...     

梅山高炉长寿实践

从高炉冷却设备改进、炉身冷却结构形式的改进、炉缸炉底结构及材质的改进以及高炉操作维护等方面阐述了梅山三代高炉的长寿经验。认为现役高炉采用的炉身板壁结合的冷却结构以及炉缸陶瓷杯结构适合梅山高炉长寿要求。     

首钢迁钢1号高炉长寿设计

通过讨论炉底炉缸长寿技术的发展历程,总结首钢高炉长寿经验,提出高炉炉缸炉底长寿设计的思想和理念——控制炉缸炉底的“象脚状”侵蚀,避开炉缸的过度侵蚀,使炉缸炉底侵蚀向“锅底状”侵蚀的方向发展。首钢迁钢1号高炉炉缸炉底的设计,结合数学模型计算,实现了长寿设计。     

梅钢高炉综合护炉技术的开发应用

对梅钢高炉综合护炉技术进行了总结.梅钢在役1、3号高炉已分别连续生产逾10年和12年,通过不断开发应用综合护炉新技术,目前炉缸冷却壁热流强度稳定,3号高炉单位炉容产铁有望超过10000L/m3,达到新的长寿高炉标准.     

8号高炉护炉实践

高炉长寿设计是个系统工程,仅靠任何单一技术无法实现高炉长寿目标,必须统筹考虑高炉设计、砌筑、维护及操作等各个环节。为了提高高炉的寿命,对首钢长钢8号高炉炉缸、炉底的侵蚀情况进行调研,分析蚀损原因,提出改善炉缸、炉底耐火材料结构以及可提高技术水平和护炉效果的方案。     

长钢8号高炉炉缸炉底破损调查及长寿经验

对长钢8号高炉炉缸炉底破损调查及长寿经验进行了总结分析。8号高炉一代炉役寿命9年10个月,单位炉容产铁量10640 t/m³,停炉后进行的炉缸炉底破损调查结果表明,炉缸与炉底交界处侵蚀最为严重,呈象脚状侵蚀,炉缸炭砖部分环裂,炉底5层满铺炭砖完好,炉缸侵蚀的原因主要是铁水环流、铁水溶蚀、有害元素侵蚀和热应力等。8号高炉这一代炉役的长寿经验:一是均衡稳定的生产组织;二是长期稳定顺行的炉况;三是及时采取相应的护炉生产措施,四是合理应用炉体维护技术。     

武钢1号高炉炉底与炉缸长寿新技术

武钢1号高炉改造性大修，炉底与炉缸采用长寿新技术：增大炉缸容积，加深死铁层；选用半石墨炭砖和德国的高密质炭砖；炉底冷却采用软水密闭循环，以及设置完善的检测设施。总结运用钒钛矿护护经验，以减缓或消除炉底与炉缸“环缝”、“熔洞”、“蒜头状”侵蚀，达到炉底、炉缸高校长寿的目的。     

首钢高炉长寿维护实践

对首钢高炉长寿维护经验进行了总结.首钢1、3、4号高炉均已连续安全生产15年以上,主要通过对炉缸水温差的合理控制,稳定高炉冷却水质,及时维护高炉本体受损冷却壁,定期进行高炉炉内喷涂造衬,来提高高炉寿命.     

宝钢3号高炉长寿技术实践

宝钢3号高炉稳定运行了14年,创造了多项宝钢高炉的技术经济指标纪录,其在长寿维护技术方面的经验是:合理的冷却系统设计;确保入炉原燃料质量合格,严格控制碱金属和Zn的入炉量;操作上保持炉况稳定顺行、避免煤气流的急剧变化;保持足够的冷却强度、改善并稳定水质;采取安装微型冷却器、人工造壁、压浆、喷补、更换冷却壁等措施,同时强化炉底炉缸以及铁口的维护,保证铁口深度,确保侧壁温度安全受控,从而有效保证高炉顺行、长寿。     

武钢8号高炉高产长寿的主要经验

武钢8号高炉投产10年来,不仅没有一块冷却壁损坏,而且年平均产铁量达到设计指标(330万t)的108.3%,特别是2019年以来,8号高炉继续维持高产长寿的态势,各项技术经济指标再创新高。从设计、高炉操作两方面出发,概要总结8号高炉的高产长寿工作,认为优良的设计炉型、中心加焦的技术、高炉经验诊断模式、炉前均衡出铁操作技术是实现高产长寿的关键。     

Laudatio: Prof. Dr. med. Dr. phil. Dres. h. c. Heinz H?fner

During the course of a year, there are many healthcare workers nationwide who sustain sharps injuries whilst carrying out their duties. Staff who work in the Accident and Emergency (A & E) units are no different from anyone else in this respect. The emotional cost of such an accident cannot be calculated, whereas the financial costs can. This article aims to show how the cost of an injury to a member of staff can be calculated, thus allowing a manager to assess the financial implications of sharps injuries to their department. In the absence of access to an Occupational Health (OH) department, most A & E units have to respond to sharps injuries to healthcare workers in the hospital. This task must be attended to by the medical staff as well as the nursing staff of the A & E unit. Within the following text the appropriate responses and methods to ensure uniformity of response are discussed. The tables and the calculation figures shown are taken directly from the information held in the St James's University Hospital Trust's OH department. All calculations are based on the middle band of the salary scale for each discipline. Accurate costings for each member of staff injured cannot be shown in this article, but the general principle is laid down and can be easily followed for any situation.     

1969 C.P.A. Institute.

Presents the program for the C.P.A. Institute entitled "The Role of Counseling Services on the Contemporary Campus." The Institute was held on June 2-3, 1969. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Rats, Man . . .

Comments on the article by Richter entitled "Rats, Man, and the Welfare State" (see record 1960-02810-001). The commenter notes that in his article Richter did not indicate how hereditary and environmental factors were controlled. In comparing the hereditary survival characteristics of wild versus domesticated rats, it would be essential that the environmental influences on the survival characteristics of the wild rats should be ruled out. Another factor to be considered is that the wild state may offer a diet and other environmental influences, which in the life of a single individual would produce organic changes, accounting for some of the differences between wild and domestic rats. It would seem that the most effective way to determine the hereditary differences between wild and domestic rats would be to create a wild group, composed solely of the offspring of wild rats. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The blood-brain barrier. I. Histology. Physiology. Embryology. Transport

The concept of blood-brain barrier (bbb) arose in the beginning of the 20th century after report that the dyes injected intravenously did not appear in the brain. The idea and definition of bbb has been changed many times since then. We present current opinion concerning bbb, its histology, embryology, ultrastructure and function on the ground of a review of the recent literature.