扬迪矿烧结性能试验研究

通过对扬迪矿理化性能、岩相鉴定分析,在实验室进行烧结性能实验研究,开发了武钢配矿结构下的扬迪矿使用技术。研究结果表明,扬迪矿配比从10%增加到35%并同时代替部分混匀矿都是可行的。在武钢原料条件下,扬迪矿最适宜的配比为25%,此时混合料适宜的水分范围为(6.5±0.2)%,适宜的无烟煤配比为5.3%~5.5%。     

扬迪矿烧结基础特性的试验研究

对澳大利亚扬迪粉矿烧结基础特性的测试分析表明,扬迪粉矿同化温度低,同化能力大,液相流动性高,有效粘结范围大,但粘结相自身强度不高。烧结杯及工业性试验表明,在莱钢原料条件下,通过优化烧结配矿,当扬迪粉配比在20%左右时,烧结矿产质量指标最佳,超过20%后,指标稍有所下降,但仍高于基准配矿。     

梅钢扬迪矿配矿研究与生产运用

为了优化配矿结构,拓宽烧结用料品种,降低生产成本,梅钢技术中心对扬迪矿的烧结性能进行了试验研究。分析评价了烧结各工艺参数的优化试验结果,及其对烧结指标的影响,经高炉生产实践证明配用8％扬迪矿的烧结矿性能基本满足梅钢高炉炼铁的要求。     

梅钢扬迪矿配矿研究与生产应用

为了优化配矿结构,拓宽烧结用料品种,降低生产成本,梅钢技术中心对扬迪矿的烧结性能进行了试验研究,并分析评价了烧结各工艺参数对烧结指标的影响.高炉生产实践表明,配用8%扬迪矿的烧结矿性能基本能满足梅钢高炉炼铁的要求.     

扬迪矿粉配矿研究及生产实践

为拓宽烧结用料，降低生产成本，临钢技术中心对扬迪矿的烧结性能进行研究，优化工艺参数并用于工业生产。实践表明，配用10％扬迪矿生产的烧结矿能满足高炉需求，降低原料成本。     

配加扬迪矿烧结工业实验研究

为提高烧结矿强度，改善烧结矿粒度组成，在烧结中配加澳大利亚ＢＨＰ公司生产的扬迪矿，有提高烧结矿产量，改善烧结矿粒度组成的作用。     

高比例褐铁矿与细磁精矿粉配矿技术研究

在对褐铁矿-扬迪矿的性能进行了理、化、热力学性能分析研究的基础上,与太钢自产超细磁铁精矿粉尖山粉进行了合理配矿,经过大量的烧结杯试验和烧结矿冶金性能检测,优化出了适宜的配比方案,开发出了超细磁铁精矿粉与高比例褐铁矿配矿烧结技术,应用于生产实践,并实施了有利措施,烧结料层透气性得到了改善,烧结矿产质量指标保持在较好水平,配矿成本大大降低,取得了很好的应用效果。     

提高扬迪粉配比的生产实践

为了适应铁矿石资源供给情况的变化,同时也为了降低烧结矿Al2O3含量,改善高炉渣系,降低生产成本,需要探索扬迪粉在烧结中的大比例配用问题。经过扬迪粉配比由12%逐步提高到30%的生产实践发现,通过合理搭配提高扬迪粉比例,不会影响烧结生产质量,扬迪粉配比30%时,烧结矿质量较稳定,生产成本有所下降。     

高比例扬迪粉烧结优化试验研究

介绍了扬迪粉(YD粉)烧结配矿优化试验情况及不同硅源对高YD粉配比烧结过程的影响.试验结果表明:用具有高孔隙度的YD矿替代B粉、C粉和E粉后,混合料水分应适当提高,以改善混匀制粒效果.因原料装料密度降低,使原始料层透气性得到改善,烧结生产率得到提高,烧结矿还原性略有改善,T<,D>-T<,S>区间和T<,D>-T<,m...     

烧结生产配加扬迪矿实验研究

对烧结生产配加扬迪矿的可行性进行了实验室实验和生产试验研究.实验室实验表明,在本钢现有生产原料和技术条件下,用扬迪粉替代巴西粉进行烧结生产是可行的,但煤耗比替代前增加3.5kg/t,转鼓强度降低1.22个百分点,烧结矿品位下降0.15个百分点.     

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.