梅山1号高炉炉前生产实践

梅山1号高炉大修后(第三代)于1997年10月8日开炉,有效容积由1080m~3扩至1250m~3。由于场地、经费、时间等限制,仍采用单铁口、双渣口的配置形式。这种配置形式在一定程度上制约了高炉产量的提高,1号高炉通过强化炉前管理、抓好渣铁口的维护及主沟的修补工作,并在炉前工作中开展     

单铁口高炉改双铁口双场生产实践及效益评估

敬业集团分公司2号高炉在2021年底大修。在工期短情况下，将上代炉龄单铁口单场出铁大修改造为双铁口双出铁场出铁，两个出铁场大沟和撇渣器均采用一体化浇注成型的贮铁式大沟，解决了困扰生产多年的单铁口单场出铁问题。在双铁口运行情况下，高炉炉缸工作状态良好，风压风量稳定，渣铁物理热充沛，铁口深度稳定，单侧铁口出铁间隔时间得到延长，提高了铁口工作质量，使高炉能按时出净渣铁，有利于实现低硅低硫冶炼，促进高炉顺行稳定，为高炉进一步提高经济技术指标创造了条件。同时解决了因修补炉前出铁大沟、撇渣器及炉前事故需长时间慢风、休风的生产局面，降低了高炉慢风率和休风率，增加产量并降低生产成本，创造了显著的经济效益，值得其他单铁口高炉改造借鉴。     

邯钢4号高炉炉墙结厚的处理

1 前言 邯钢4号高炉大修扩容后,炉容由620m~3扩大到900m~3。大修扩容后的高炉采用无钟炉顶,设有18个风口,1个铁口,2个渣口。4号高炉于1997年7月2日投产,投产初期炉况顺行,各项技术经济指标逐步改     

武钢3号高炉生产技术进步

1 概述 武钢3号高炉有效容积1513m~3,1993年改造性大修后开炉,大修改造高炉本体部分主要为在原来1个铁口、1个渣口的基础上增加了1个铁口(即现在的南铁口)。采用存铁式主沟,选用较为先进的带振打的风动开口机和DDS液压泥炮。热风炉部分采用了     

水钢1号高炉开炉达产实践

1 概况 水钢1号高炉原为633 m~3,12个风口,2个渣口,1个铁口,于2001年1月30日停炉大修。大修扩容改造后,炉容为788 m~3,16个风口,2个渣口,1个铁口,并于5月10日开炉投产。改造设计时采用了一系列新技术、新设备,如:PWⅡ型无料钟炉顶,水冷炉底,自焙炭砖+陶瓷杯炉缸。另外内燃式热风炉加高6.4 m,增加了蓄热面积,热风炉增加了煤气和空气双预热装置。炉前系统增加了除尘系统,使用了液压开铁口机。1号高炉改造前后内型参数见表1,热风炉参数见表2。     

本钢4号高炉长寿措施

1 前言 本钢二铁厂4号高炉(1070m~3)设有1个铁口,2个渣口,16个风口,原燃料不过筛,采用料罐上料。1992年高炉大修时,对影响高炉寿命的部位进行了改造,如:在炉身下部到炉腰之间增加了5段扁水箱,砖衬改用     

克里沃罗格钢铁公司2700m~3高炉大修改造

现有高炉在大修时采用先进技术进行改造,是改善高炉生产的主要方向之一。苏联克里沃罗格钢铁公司8号高炉(容积2700m~3)于1967年10月23日投产,有风口20个,铁口和渣口各2个并分别布置在2个出铁场上铁水用140t铁水罐运出,炉渣则用炉前冲渣装置处理,并考虑有16.5m~3的渣罐作备用。 8号高炉于1974年曾进行过改造,当时将风口增加到24个,并设置第三个铁口,布置在一侧的出铁场上。根据同类高炉的实践经验,本次大修时采用了以下新技术: 1.增加风口数目将风口数目增加到28个,且风口沿炉缸周围呈不均匀布置,即在铁口区风口间距为     

伊犁钢铁厂小高炉不放上渣

新疆伊犁钢铁厂有13m~3和20m~3小高炉各一座,以产铸造生铁为主.因原料成分波动大,加之炉容小,炉温难以稳定,渣口经常难开难堵,渣口小套烧损和伤人事故时有发生.仅1987年两座高炉因更换渣口及处理渣口事故就休风19次,共计838min.有时也常因出渣不顺被迫慢风或休风.出渣已成为炉前操作中的一大薄弱环节.为此,从1988年初两座高炉经大修相继点火投产后,除20m~3高炉仅在一次处理炉缸冻结事故时打开过渣口外,两座高炉至今均未出过上渣.     

湘钢1号高炉多环布料实践

1 引言 湘钢1号高炉(1000m~3)大修后于1996年7月3日投入生产,采用了无料钟炉顶,设计炉顶压力0.15 MPa(最大0.20 MPa),18个风口,1个铁口,2个渣口。高炉投产后,一直采用单环布料,加之受各种因素的影响,生产一直不稳定。1999年3月份,采取加强外部原料管理、加强设备管理、提高高炉操作水平等措施后,高炉生产稳定性增强,当月平均利用系数达到2.021,入炉焦比485 kg/t。1999年9月27日至10月3日,1号高炉进     

包钢3号高炉大修竣工投产

包头钢铁公司3号高炉(1800m~3)于1988年7月6日停炉进行大修改造,经过半年紧张施工于1989年1月6日点火送风,1月7日顺利出铁。该高炉设有2个铁口(其夹角为30°)、1个渣口、24个风口。出铁场设有30t 推力的液压泥炮、折叠式液压堵渣机和液压摇动流咀,铁水主沟采用水冷方式。高炉为岛式布置,炉体为钢结构大框架。风、渣、铁口区采用异型大块炭砖砌筑,其中有3个风口试用氮化硅结合的炭化硅砖。炉底为炭砖综合水冷炉底结构。炉顶为并罐无料钟装置,通过受料漏斗下方翻板向左、右料罐装料。料罐有效容积     

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)     

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.     

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.