浅谈阳极覆盖料对铝电解槽运行工况的影响

基于铝电解槽的散热特点,分析了阳极覆盖料的组成、厚度和粒度对铝电解槽运行工况的影响,并对如何通过调节阳极覆盖料的厚度、粒度及组成来实现高、低工作电压下运行的铝电解槽对阳极覆盖料保温性能的需要,提出了相应的建议。     

GL190kA大型预焙阳极铝电解的技术创新实践

GL190kA大型预焙阳极铝电解槽是我国较早投入生产运行的大型预焙铝电解槽系列之一,本文着重阐述了在该系列上进行的多项创新技术以及实践生产情况。     

60kA自焙阳极电解槽预焙化改造实践

介绍华盛铝厂60kA自焙阳极电解槽改造成82kA预焙阳极电解槽的实践情况。     

多功能铝电解槽阳极坑捞块装置的设计及应用

中间下料预焙铝电解槽更换阳极作业时必须将残极料块和料渣捞出.针对过去人工捞渣存在的问题,提出了一种新型的多功能铝电解槽阳极坑捞块装置.该装置可以一次性捞出阳极坑内的残渣,使用效果良好.     

炭阳极质量对铝电解生产的影响

随着铝工业的迅速发展,大型预焙铝电解槽的开发和应用也越来越广泛,预焙阳极的需求量也日益增大。炭阳极作为铝电解槽的心脏,其质量和工作状况的好坏对铝电解生产是否正常及电流效率、电能消耗、产品等级等经济技术指标影响十分巨大。要提高阳极质量,原料质量是前提,过程控制是关键。目前,在阳极电流密度方面,我国(0.69～0.74A/cm2)与先进工业国家(0.8～0.9A/cm2)相比还有一定差距。同样大小的电解槽在其它技术经济指标不变的情况下,阳极电流密度为0.8A/cm2的电解槽,其产量比阳极电流密度为0.7A/cm2的电解槽产量高14%,这无疑会使电解生产…     

大型预焙阳极电解槽焙烧启动及后期管理

通过总结350 kA大型预焙阳极电解槽的焙烧、启动和后期管理工作经验.提出了大型预焙阳极电解槽在焙烧、启动和后期管理过程中的方法和要点,通过在某厂350 kA电解槽的生产实践,取得了良好的效果.为今后大型预焙阳极电解槽生产有一定的指导意义.通过在某厂350 kA电解槽的生产实践,取得了良好的效果。     

420KA预焙阳极电解槽通电焙烧分析

电解铝混合料焙烧启动是大型预焙阳极电解槽焙烧启动的主要方式,本文通过在电解槽混合料焙烧过程中,对阳极分流方式进行改进,增加二级分流,使阳极电流分布和焙烧温度更加均匀,从而提高大型预焙阳极电解槽焙烧质量,有利于提高电流效率和延长电解槽寿命。     

一种铝电解的预焙阳极及其制备方法

本发明是一种铝电解的预焙阳极及其制备方法,目的是优化设计预焙阳极的外形。在炭阳极生产过程中掺入铝加工生产过程产生的废边角铝丝来作为改善炭阳极导电性能的添加剂,即在炭阳极生产过程中添加1．5‰～2．0‰的铝丝,在焙烧时,这些铝丝由固相变成液相时,填充复合到炭质颗粒的微孔中,使得炭阳极基体的载流子增多。本发明与现有技术相比具有以下积极效果：节约原料成本,有利于铝电解槽对保温覆盖料的操作和管理;     

论预焙阳极质量对铝电解生产中的影响及措施

通过浅谈预焙阳极质量对铝电解生产中的影响及措施,结合实际分析炭块质量直接关系到铝电解槽的运行状态和经济技术指标,在分析预焙阳极质量影响的同时从工艺的角度提出控制措施,以更好地服务于电解生产。     

综合节能技术在240kA铝电解槽上的应用

通过应用分段式高导电率阴极钢棒、电解槽内衬结构优化升级、预焙阳极外观结构改进,从而使240kA电解槽运行更加稳定运行,实现电解槽节能降耗的目的。     

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.