顶吹氧气转炉气化脱硫率和终点脱硫能力的研究探讨

借助１５ｔ顶吹氧气转炉的试验，研究了氧气顶吹转炉的气化脱率和影响它的主要因素，同时，研究了影响吹炼终点脱硫分配比和偏离平衡系数的因素。     

邢钢30吨氧气顶吹转炉烟气净化回收实践

介绍了邢钢３０ｔ氧气顶吹转炉烟气净化及煤气回收系统装置及效果。     

小转炉匹配小方坯的全连铸生产

全连铸是企业提高经济效益的有效途径。三明钢铁厂炉风系统在钢水回率基本不增加的情况下实现了全连铸生产，并对３座１５ｔ氧气顶吹转炉匹配４台３机３流小方坯连铸机工艺过程的优化进行探讨。     

目前国内外吹氧平炉的改造与发展趋势

一、目前世界上主要炼钢设备是氧气顶吹转炉 随着科学技术的发展,炼钢设备及工艺也在不断地更新与进步;特别是由电子计算机自动控制的氧气顶吹转炉发展更快,已成为当前世界上的主要炼钢设备。 七十年代以来,氧气转炉炼钢技术迅速发展,继氧气顶吹转炉后,又相继发展了氧气底吹转炉及顶底吹转炉炼钢法。其在世界     

回转窑活性石灰炼钢效果

简述了８ｔ顶吹氧气转炉使用不管不顾不管不顾为吹炼半钢和铁水的冶金效果及其显著的经济效益。     

萍钢15t转炉氧枪喷头射流特性测试

萍乡钢铁厂炼钢分厂有两座１５ｔ氧气顶吹转炉，生产能力为年产５０万ｔ钢。由于投产时间不长，有必要制定合理的工艺操作制度，其中供氧操作工艺和喷头结构参数是至关重要的。为此，北京科技大学与萍钢合作，对现用氧枪喷头的射流特性进行了测试，以检验其设计的合理性。...     

30t氧气顶吹转炉托圈轴向移位原因分析及对策

对唐钢３０ｔ氧气顶吹转炉托圈轴向移位的原因进行了深入分析，并介绍了作为应急措施的现场配销法。     

6t氧气顶吹转炉的扩容改造

济钢第二炼钢厂针对原转炉系统存在的系统不匹配、作业率低等问题，对６ｔ氧气顶吹转炉进行了扩容改造，改进了倾动系统、冷却系统、上料系统，使炉前作业率提高了５％，具备了年产５０万ｔ钢的生产能力。     

氧气顶吹转炉使用烧结锰矿来提高锰的回收率

氧气顶吹转炉使用烧结锰矿来提高锰的回收率日本钢铁公司在氧气顶吹转炉炼铜的脱氧期，采用了加入烧结锰矿，提高了锰的回收率。该公司既进行了１００ｋｇ级的实验室试验，又进行了３４０ｔ级的工业规模的试验。加入烧结锰矿后，使［Ｍｎ］的氧化损失减少。因为烧结时，锰...     

氧气顶吹转炉炉体和托圈的更换

在１个月停炉期间更换生产能力为２２５ｔ的氧气顶吹转炉炉体及已使用２２年的耳轴托圈，比预计工期提前６天。     

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.