柳钢高炉炼铁技术进步

1 概述 柳钢现有5座300m~3级高炉(1、2、4号高炉306m~3,3、5号高炉380m~3),其中5号高炉于2001年10月底建成投产,3号高炉于2002年8月停炉大修,10月17日点火送风,1号高炉于2002年12月13日停炉大修,计划2003年1月底开始生产;1、3、4号     

韶钢2号高炉配用球团矿冶炼试验分析

韶钢原有高炉3座(305m~3×2 255 m~3×1),配有烧结机3台(24 m~2×2 33 m~2×1),高炉的烧结矿使用率约80％。1996年12月,因新建的4号高炉(305m~3)投产,使高炉的烧结矿使用率降为65％。为提高高炉的熟     

韶钢高炉喷吹混合煤工业试验

1 概况 韶钢炼铁厂现有5座高炉(350 m~3×3+305 m~3×1+255 m~3×1),其中3号、5号高炉采用元料钟炉顶,1号、2号、4号高炉采用双钟炉顶。高炉喷煤系统于1979年建成投产,煤比一直维持在较低水平(只有30～40 kg/t)。随着韶钢新建高炉投产以及高炉冶炼强度的进一步提高,焦炭的供应能力日     

风口衬套的研制与应用

1 前言 湘钢现有3座高炉(1、2、3号高炉容积分别为1000、750、1000m~3),1号高炉大修后于1996年7月开炉,2号高炉于1987年4月投产,3号高炉于1994年5月投产。在3号高炉建成前,湘钢只有1号、2号两座     

三钢提高热管预热器寿命的措施

1 概况 三明钢铁厂是较早使用热管预热器的厂家之一。1986年2月,热管预热器在新建的3号高炉(314m~3)上投入使用,由于管理方便、效益明显,随后便于1989年、1994年分别在2号高炉(255m~3→295m~3)和1号高炉(255m~3→350m~3)的扩容改造中得到使用。     

南昌钢铁厂高炉喷煤进展及存在的问题

一、概况 南昌钢铁厂现有二座高炉进行生产(1号高炉255m~3,2号高炉300m~3),1989年建成喷煤系统(见图1),采用了目前国内较为通用的双罐交替高压喷吹工艺,设计生产能力为两座300m~3,高炉利用系数达到2.0时喷吹量可达到120～150kg/t。 喷煤投产初期,由于高炉全生矿冶炼,炉况顺行条件极差,喷吹量一直只能维持在40kg/t以下。1991年80型焦炉和18m~2烧结机相继投产,高炉原、燃料条件逐步好转,     

宝钢1号高炉大修热风管道系统的设计改进

1 引言 宝钢1号高炉(4063 m~3)于1985年9月建成投产,生产4年后热风炉热风支管的(?)2600 mm波纹管处内衬大量脱落,并相继出现烧红和漏风现象(宝钢3座高炉热风管道系统结构基本相同,因此2号、3号高炉热风管道也都发生过类似问题,而且比1号高炉情况严重),直接影响了高炉的正常生     

韶钢6号高炉的设计特点和开炉实践

1 概况 韶钢炼铁厂原有5座高炉(350m~3×3+305m~3+255m~3),总容积为1610m~3。韶钢6号高炉于2001年12月破土动工,有效容积750m~3,本着“高效、优质、低耗、长寿、环保”的设计原则,采用了具有20世纪90年     

在入炉矿石中混装焦丁的生产实践

马钢二铁厂3号高炉(有效容积294m~3),自1985年6月至今所进行的矿石与焦丁混装入炉的生产实践,证明它对改善料柱透气性,提高煤气利用、降低焦比有积极意义。1985年9月这种混装焦丁的操作方法又扩大应用到2号高炉(294m~3)和1号高炉(255m~3),均取得满意效果。截至1986年3月底止,全厂共加入焦丁6025t(折合干焦丁4957t)。矿石与焦丁混装已成为二铁厂高炉的正常操作方法,是1986年降低焦比、增加经济效益的措施之一。     

酒钢新1号高炉达产实践

1 前言 酒钢1号高炉(1513m~3)于1998年4月10日停炉进行改造性扩容大修,到1998年6月13日新1号高炉(大修后炉容为1800m~3)点火开炉,历时63天。与原高炉相比,新1号高炉技术装备水平进一步提高。高     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

焦炭热性能指标意义浅析

通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。     

Results of treatment of cancer of the cardia

Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.     

Quality of life of relatives of mental patients

Usage of quality of life of psychiatric patients' relatives as the parameter of estimation of the quality of psychiatric care is considered. By means of standard questionnaire elaborated by the authors as well as by means of both individual and group conversations the quality of life was analyzed in 40 relatives which lived together with psychiatric patients. Different spheres of their life and difficulties (financial, social-psychologic, production) were examined in families with such patients. The defects of psychiatric care that had direct influence on the quality of life of the psychiatric patients' relatives are outlined.