鞍钢11号高炉中心加焦配合大料批试验

鞍钢１１号高炉是现代化装备水平极高的大型高炉,１９９８年１～１０月,炉况顺行出现问题,为此高炉进行了中心加焦配合大料批试验,取得了较好的效果,介绍了此次试验具体的操作过程。     

八钢炼铁厂大料批正分装实践

八钢炼铁厂高炉于1997年4月中旬至5月份通过大料批正分装实践，高炉强化及煤气利用提高，节焦效果显著。大料批正分装促进了高炉喷煤比的提高，是八钢贯彻精料方针的结果，今后矿批大小仍有待进一步探索．     

本钢2号高炉高效长寿生产实践

在本钢2号高炉8年的一代炉龄生产中，采取了逐步缩小风口直径，加长风口长度、大料批、全倒分装、烧结配加小块焦、降低烧结矿碱度等多项措施，获得了历史上效益最好、产量最高的效果。在高炉生产后期，炉底自焙碳砖发生严重过热，因此对炉底进行了通管水冷却，保证了安全生产，有效地延长了高炉寿命。     

济钢2号高炉大料批分装一车一布生产实践

介绍了从１９９７年７月起济钢２号高炉进行的大料批分装的实践，开发出集分装、布料器一车一布、矿焦定差料线为一体的超级大料批技术，并取得显著成效     

高炉分装大料批冶炼试验

梅山铁厂于1978年9～11月在1060米~3高炉上进行分装大料批试验,矿、焦批重由22.2和6.35提高到27和7.5吨。在采用正分装大料批的装料制度时,炉喉截面各点CO_2含量普遍提高约2％,煤气利用改善。焦比大幅度降低,高炉取得系数1.997,焦     

安钢3#高炉大料批分装生产实践

介绍了安钢为提高煤气利用率和增产节焦,对其3#高炉进行了大料批分装操作试验.通过采取优化炉料结构,控制入炉料粉末,搞好上下部调剂,控制炉体冷却强度等措施,经过8个月的大料批分装生产实践,增产节焦效果明显,各项技术经济指标得到了进一步优化.     

武钢5号高炉取消中心加焦工业试验

为探索降低高炉燃料比的途径,在保证炉况稳定顺行的前提下,武钢5号高炉进行了取消中心加焦的工业试验。结果表明:取消中心加焦需要较好的高炉原燃料条件,取消中心加焦后,煤气利用率平均提高2.61%,燃料比平均降低14kg/t,焦比平均降低12.7kg/t。     

鞍钢鲅鱼圈2号高炉取消中心加焦实践

鞍钢鲅鱼圈2号高炉中修更换铜冷却壁后,为提高煤气利用率、降低高炉燃料比,开展了取消中心加焦布料制度的实践。通过先调整中心加焦挡位,初步形成了"平台+漏斗"的布料模式,之后再缩小中心漏斗、降低矿焦角位差和综合调整矿焦角位差等手段,2号高炉成功取消了中心加焦,炉况稳定顺行,煤气利用率提高到50%以上,燃料比下降到502kg/t。     

高炉中心加焦对气流分布及煤气利用的影响

中心加焦可以减小中心区域的矿焦比,增加中心气流强度,形成倒V形软熔带,提高料柱的透气性;由于中心气流中CO含量高,焦炭的溶损少,颗粒进入炉缸时保持较大的粒度,提高死焦堆的透气透液性。中心加焦对高炉操作有很多积极作用,但中心加焦也会减小中心气流的利用率,提高燃料比。当中心加焦过量时,高炉内的气流分布出现异常,因此需要研究合理的中心加焦量以及中心加焦方式。利用Ergun公式,对不同中心加焦量条件下,高炉内的煤气分布、压差变化等参数进行计算,并根据煤气分布情况简单计算了中心加焦对高炉内煤气利用率的影响。根据计算分析结果,对高炉中心加焦量及中心加焦方式进行讨论。研究结果可以为实际高炉中心加焦操作提供理论参考。     

高炉中心加焦

本文论述了高炉中心加焦的一般原理,着重介绍了塔拉索夫钟式炉顶中心加焦技术和扎波罗什钢厂高炉中心加焦的生产实践。     

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.