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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. 相似文献
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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… 相似文献
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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。 相似文献
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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。 相似文献
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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。 相似文献
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K Ohta M Nishi M Ueda S Ohyama T Matsubara T Takahashi T Nakajima 《Canadian Metallurgical Quarterly》1998,99(9):589-594
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. 相似文献
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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) 相似文献
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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. 相似文献
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TA Solokhina LS Shevchenko IuV Se?ku EG Rytik LV Besedina TS Veshchugina 《Canadian Metallurgical Quarterly》1998,98(6):42-46
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. 相似文献
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