优化炉料结构分析

威钢现有高炉三座，炉料结构为土烧结矿配加综合块矿（熟料比年平均约为５５％）。焦炭质量差、熔剂比高、高炉技术经济指标差、吨铁成本高，严重影响了威钢的生存和发展，为此，就 威钢现能采购的原料进行 经，随着机烧的投产，焦炭质量的改善，将使高炉生产指标大幅度改善，焦比下降，产量增加，吨铁成本可下降１２７．４１元／ｔ，年轻济效益十分可观。     

安钢水铁精料技术的特点及效果

安钢集团水冶钢铁有限责任公司十年来，高炉炼铁紧抓精料这个核心，通过不断提高烧结矿、球团矿、焦炭的质量和入炉品位，加强管理，使高炉的冶炼强度大幅度提高，取得显著的经济效益和社会效益。     

信钢高炉强化冶炼实践

1 概况 信钢现有高炉4座,总容积480m~3。高炉所用原燃料如下:焦炭全部靠外购,含铁原料由机烧结矿、土烧结矿、外购球团矿和少量生矿组成,高炉熟料率达90％,入炉原料的成分和炉料结构见表1和表2。由于铁前系统不配套制约了炼铁的发展,1997年高炉利     

包钢4号高炉强化冶炼攻关

１９９８年包钢４号高炉通过采取诸如加强烧结矿过筛、增加啬焦丁混装置、加强高炉操作、要风率等一系列行之有效的措施，使高炉技术经济指标得到了较大改善，利用系数连续８个月达到１．７以上，入炉焦比对４６２ｋｇ／ｔ。     

韶钢烧结厂提高烧结矿产量的实践

介绍了韶钢烧结厂提高烧结矿产量的具体作法。通过技术改造和科学管理，使烧结利用系数和设备日历作业率稳步提高，使烧结矿产量从１９９５年的１０２万ｔ提高到１９９６年的１０８万ｔ，再提高到１９９７年的１１８．９万ｔ。为炼铁降成本、增效益作出了贡献。     

三钢高炉生产技术的进步

１９９５年以前，三钢高炉的利用系数长期在１．４－１．６之间徘徊。近几年来，由于重视精料工作不但使烧结矿和焦炭的质量得到了提高，还通过配用球团矿，使高炉的炉料结构得到了优化；通过吭炉配置风机、改造喷煤系统、使用斜风口等措施，使高炉的强化冶炼得到落实，１９９８年上半年，各高炉的平均利用系数达到了２．７４８。     

酒钢高炉的合理炉料结构

通过试验确定了适合酒钢高炉生产条件的合理炉料结构，即以碱度为１．７５的碱性烧结矿为主（６５％左右），配加３０％左右的碱度为０．３５的酸性球团烧结矿以及少量的黑鹰山块矿。高炉采用合理炉料结构后，利用系数显著提高，１９９７年１￣５月，１号高炉利用系数平均达１．４４４，２号高炉平均达１．８３０。     

80%外矿高碱度烧结矿炼铁生产实践

通过充分的技术准备和及时准确的高炉操作调整，在配加80％的外购矿高碱度烧结矿炼铁工业试验中，包钢炼铁厂取得了高炉技术经济指标的巨大飞跃。高炉利用系数达到2．063t(m3．d)以上，最高2．202t(m3．d)，焦比下降27．5kg/t，综合焦比下降15.0kg/t。证明了增加外来矿配比是改善包钢烧结矿特殊性，提高高炉技术经济指标的有效途径。     

鞍钢合理炉料结构的形成

鞍钢高炉合理的炉料结构是高碱度烧结矿与酸性球团矿搭配使用。建设弓矿200万t球团厂，生产高质量的酸性球团矿取代东烧酸性小球烧结矿(东烧改为生产高碱度烧结矿)，4年回收投资，鞍钢全面实现合理的炉料结构。     

采用新的焦炭和煤粉水分测定方法降低焦比

采用新的焦炭和煤粉水分测定方法降低焦比张忠武（鞍钢炼铁厂）１９９４年鞍钢炼铁厂的生产经营目标是０８３５５３８，即生产生铁８３５万ｔ，综合焦比５３８ｋｇ／ｔ铁，比１９９３年降低２ｋｇ／ｔ铁。由于种种原因，１９９４年炼铁厂的１０座高炉中有５座风温低于１０...     

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.