增加球团矿用量以优化高炉炉料结构

阐述了武钢高炉炉料结构中球团矿配比的变化情况,在一定范围内增加进口球团矿配比可优化高炉技术经济指标。当球团矿配比〈12％时,高炉装料制度无须调整。当球团矿配比〉20％时,则需预防中心堵塞。球团矿质量决定其配比,质优的球团矿利于高炉顺行。经比较分析得出武钢高炉较合理的炉料结构为：（65％～70％）烧结矿＋（20％～25％）球团矿＋高铁块矿。     

武钢5号高炉使用球团矿简述

通过对武钢5号高炉使用进口球团矿后各种球团配比下高炉指标的统计与分析，5号高炉使用进口球团矿的合适配比在20％～24％范围，能够获得较满意的技术指标。     

高炉冶炼氧化球团的半工业试验

为了研究球团矿的冶炼性能,在100米~3高炉上进行了配比达90%冶炼试验和炉身取样.一方面考查球团矿在高炉实际冶炼中高温还原性,还原强度,粉化,软化,融熔,粘结等性能变化,另一方面分析了球团矿对高炉冶炼的影响.试验表明,球团矿比烧结矿冶炼性能更好,以球团矿代替烧结矿,冶炼指标显著改善.但随着球团矿配比增加,冶炼指标改善幅度变小.在保证还原性的情况下,改善球团矿的高温强度,提高软化温度是高炉大量使用球团矿的关键.     

攀钢高炉配加钒钛氧化球团矿试验研究

介绍了攀钢高炉配加钒钛氧化球团矿工业试验情况，分析了不同球团矿配比的高炉冶炼操作特点及攀钢使用球团矿的合理炉料结构，对进一步优化钒钛矿高炉冶炼的炉料结构、改善技术经济指标起到了明显的作用。     

国外大型高炉使用球团矿冶炼的基本情况

概况球团矿是高炉冶炼的优质原料之一。高炉最早试验使用球团矿冶炼,是在1948年由美国矿山局在一座小高炉上进行的。试验取得了令人满意的效果,当高炉球团配比由     

南钢高炉大比例配用球团矿的生产实践

在一烧结厂停机大修的情况下，南钢对高炉炉料结构进行了调整，球团矿配比从27%提高到50%以上，由于原料准备充分，操作得当，在球团矿配比达50%以上的情况下，高炉生产仍保持稳定，2001年8月，5号高炉利用系数达3.445。     

高炉高球比条件下炉料颗粒偏析行为及其优化

提高入炉球团矿比例是高炉低碳冶炼的重要手段，由于球团矿滚动性强，在高炉布料过程中会存在炉料粒度偏析的问题，因此优化布料制度、降低炉料粒度偏析，对改善高炉上部气流分布具有重要意义。为此，通过建立物理模型，研究球团矿配比、矿石批重和溜槽倾角对高炉布料偏析的影响，结果表明，提高球团矿配比能够降低炉料的粒径差，改善炉料粒度偏析情况。基于试验结果建立了炉料粒度偏析指数预测的多元回归模型，发现炉料粒度偏析指数随着溜槽倾角的增加逐渐增大，在溜槽倾角大于32°后炉料粒度偏析指数的增幅变小；炉料粒度偏析指数随着矿石批重的增加呈现先增大后减小的变化趋势。在球团矿配比固定时，采用大批重小角度溜槽倾角或者小批重大角度溜槽倾角可以有效减小炉料粒度偏析。研究结果可以为高炉采用高比例球团矿冶炼时优化调整装料制度提供参考。     

萍钢高炉原料冶金性能及合理炉料结构的研究

一、前言 七十年代以来,各国炼铁工作者开始重视高碱度烧结矿的应用和高炉合理炉料结构的选择。日本高炉炉料中高碱度烧结矿的比例自后逐年有所增加,块矿和酸性球团矿的配比约各占10～20％;苏联一向以烧结矿为主,使用球团矿的比例极低、七十年代以来,不少高炉也开始采用球团矿作为炉料的一部分,目前炉料中球团矿一般已占20～30％;西德高炉的炉料以烧结矿为主,使用酸性球团矿的比例也在20～30％;美国高炉     

高炉块状带透气性试验分析

通过试验研究了在不同球团矿配比、不同烧结矿粒度和不同料层厚度条件下,高炉块状带透气性指数的变化规律。粒度小于10 mm的烧结矿会使高炉块状带的透气性急剧变差;在保持料层炉料粒度组成不变的情况下,如果料层厚度增加,则高炉块状带的透气性降低;随着球团矿配比的增加,料层压差呈先升高后趋于稳定的状态,高炉块状带透气性升高。     

高炉用进口块矿代替部分球团矿工业试验

通过对国内先进钢铁企业炉料结构发展趋势进行研究，提出韶钢进一步优化炼铁炉料结构的设想，2004年在6号高炉上进行以高品位进口块矿代替部分进口球团矿的工业试验．试验结果表明，以适当比例的高品位进口块矿代替部分进口球团矿后，高炉顺行保持稳定，而炼铁成本有明显下降．     

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.