高炉压注造衬的休复风操作

莱钢 2 #高炉在实施压注造衬的休风复风操作中 ,通过合理安排休风料 ,探索复风操作新方法 ,在休风时间长达2 0 h情况下 ,复风后仅用 4h就实现了全风作业     

马钢2500m^3高炉长期休风操作的经验

马钢2500m3高炉开炉以来,进行了22次定修,休风时间均在8h以上.通过不断总结经验教训,马钢在休风前准备、休风料的加入、休风时机的选择、复风和开铁口操作等方面积累了丰富的经验.     

马钢2500m~3高炉长期休风操作的经验

马钢2500m~3高炉开炉以来,进行了22次定修,休风时间均在8h以上。通过不断总结经验教训,马钢在休风前准备、休风料的加入、休风时机的选择、复风和开铁口操作等方面积累了丰富的经验。     

邯钢7号高炉长时间休风后复风操作

对邯钢7号高炉长时间休风后的复风操作进行了总结。7号高炉在休风117h39min后,通过准确掌握加风开风口节奏,休风期间加强保温措施,对料流轨迹进行测量,加强出铁组织等,高炉得以快速恢复达产。认为,本次休风前锰矿没有加到位,影响了炉况恢复的进程;针对近120h长时间的休风,可尝试采用加焦模式,防止炉温下降过多、热量恢复进程慢。     

大高炉非计划长期休复风操作实践

通过对大高炉非计划长期休复风过程的总结,从休风前生产操作参数的分析、休风方案的制订及休风过程的参数控制、复风方案的制订及恢复过程的控制等方面入手,力求找出高炉休风炉况快速恢复作业标准,规范高炉休复风操作,达到高炉快速恢复正常生产的目的。     

莱钢4#高炉长期休风恢复炉况操作实践

山钢股份莱芜分公司炼铁厂4^#高炉有效容积864 m³,因炉缸铁口区域炉皮开裂,利用环保限产机会休风57 h进行处理。通过休风前精心准备,进一步优化和完善休复风方案,加强休复风过程参数控制等手段,实现了8 h全风操作,达到了快速恢复炉况的目的。     

高炉休风料程序设计

高炉需要做定期计划检修,检修前炉内需要下休风料。休风料的下达很大程度上取决于高炉操作人员的经验。高炉体风料程序的设计可更好地安排休风料的下达,可以精确计算休风料下达的位置和炉内炉料的负荷水平及炉渣成分。     

高炉短期休风后的快速复风法

1 前言 长期以来,我们在操作高炉时总是“稳”字当头,特别是在休、复风操作时更是小心谨慎,惟恐休、复风过快造成风口、风管涌渣或者产生崩、悬料和管道行程。求“稳”本无可非议,但若高炉休风之前是处于正常炉况下,且休风时间较短,那么复风操作则不但要求“稳”,还要求“快”,以免造成不必要的损失。本讲座的目的就是为了尽快提高操作者在高炉快速复风时的操作水平,使他们能用好快     

长时间休风和复风炉况较快恢复实践

介绍了新钢第一炼铁厂高炉休、复风的全过程。在此过程中,通过采取休风前稳定炉况、合理安排休风料、加强炉内操作参数控制、强化炉体密封保温和加风、加强加负荷节奏控制的措施,实现了计划检修95.75 h和高炉休、复风过程安全顺利的目标,复风11.5 h后各操作参数恢复至正常水平。     

马钢2500m^3高炉长时间临时休风后的炉部况恢复

１９９５年１２月４日马钢新１号高炉上料主皮带纵向撕裂，造成非计划休风１１８ｈ３５ｍｉｎ。本文叙述了休风后采取的防凉措施和复风操作情况。     

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.