60t转炉溅渣护炉技术控制实践

文章以日照钢铁有限公司60t转炉的工艺参数为切入点,分析了溅渣层损坏原因、溅渣护炉机理、影响溅渣护炉主要工艺因素,并总结了60t转炉溅渣护炉控制实践经验.实践应用表明日照钢铁60t转炉通过大面粘补,控制终渣成分,渣量及溅渣枪位、时间等关键因素,转炉溅渣效果得以提高,转炉炉况得到了良好的维护.     

留渣操作推广应用的工艺研究和实践

阐述了南昌长力钢铁股份有限公司转炉厂在65t复吹转炉和溅渣护炉条件下,对留渣操作进行了工艺研究.分析了应用转炉复合吹炼、溅渣护炉工艺解决留渣操作安全问题的机理.介绍了应用留渣操作的工艺实践和取得的降低石灰消耗、降低铁水消耗、提高炉龄等效果.实践证明转炉复合吹炼和溅渣护炉工艺的应用为留渣操作的推广提供了条件,留渣操作取得了显著的经济效益.     

转炉溅渣护炉技术应用

阐述了马钢第三炼钢厂转炉溅渣护炉工程的工艺设计特点,并对影响转炉溅渣护炉效果的主要因素及应用溅渣护炉技术所产生的经济效益进行了分析。     

转炉溅渣护炉

转炉溅渣护炉是一项提高转炉炉龄行之有效的方法，据此对溅渣护炉的工艺方法、工艺原理、应用条件及国内外使用效果进行了综合介绍与分析。     

第一炼钢厂30吨转炉溅渣护炉的工业试验

本文在简介转炉溅渣护炉模拟试验的基础上，详述其工业试验情况。其中包括：溅渣护炉工艺过程和操作要点；溅渣后炉衬侵蚀速度；不同操作对溅渣效果的影响等。并对转炉溅渣护炉工艺进行了探讨，对其效益进行了初步分析。     

安钢150t转炉溅渣护炉和底部透气砖的维护实践

对安钢150 t转炉溅渣护炉和底部透气砖情况进行了介绍,溅渣护炉会对底部透气砖的使用寿命造成影响.通过对转炉工艺溅渣护炉中影响底吹的因素进行分析,进而采取相应措施,优化工艺操作,从而保证了良好的底吹透气效果,提高了转炉经济效益.     

转炉溅渣护炉工程设计与实践

转炉溅渣护炉技术是转炉护炉技术的重大进步。国家冶金局要求在本世纪末 ,我国 6 0 %以上的转炉采用这项技术。文中阐述了马钢第三炼钢厂转炉溅渣护炉工程的工艺设计特点及操作实践 ,并对溅渣护炉操作中出现的问题及经济效益进行了分析     

推广溅渣护炉,提高转炉炉龄技术探讨

文章以某炼钢厂作为实际案例进行分析.在溅渣护炉工艺技术刚刚传入我国后,该炼钢厂就对厂内三座转炉进行了相应改造和升级.将采用溅渣护炉工艺的平均炉龄与没采用溅渣护炉工艺的平均炉龄进行对比,前者不仅比后者炉龄高出将进一倍,而且在作业效率方面也得到了有效提升.同时大量减少了材料消耗,为炼钢厂节约了诸多生产成本.由此可见,溅渣护炉工艺技术在提高转炉炉龄方面发挥重要作用,为了进一步推广该技术,文章结合提高转炉炉龄技术的必要性进行分析,并结合炼钢厂转炉现状及转炉冶炼制度,确定溅渣护炉工艺及参数,同时阐述溅渣护炉实践效果,希望通过文章阐述,能够为专业研究人员提供参考、借鉴.     

小型转炉使用改渣剂进行溅渣护炉的工艺实践

总结了新疆八钢使用改渣剂溅渣护炉的操作经验,探讨了有关小型转炉溅渣护炉的几个基本工艺问题及影响溅渣效果的主要因素,介绍了使用改渣剂进行溅渣护炉的操作方法。     

溅渣护炉工艺应用实践

介绍了抗钢２０ｔ转炉溅渣护炉工艺及相关技术。讨论了溅渣护炉效果的评价方法，主要工艺参数的影响，以有溅渣护炉引起的工艺问题的解决方案。转炉溅渣护炉后，平均炉龄为３０００次以上，最高达５０９９次，耐材消耗、补炉时间和补炉强度大幅度减少，从而也提高了转炉生产率。     

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。     

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)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。     

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.     

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。     

Comparison of the results of surgical and conservative treatment of fractures of the diaphysis of the tibia

In this paper is treated the fundamental problematic of the fracture of the diaphysis of the tibia and the therapeutic results after the conservative and operative treatment are confronted. Among 518 patients with 433 open fractures and 35 with closed fractures of the diaphysis of the tibia, successful treatment of more 2/3 was obtained in the period from 1968 to 1972. Following our casuistics and literature, whose results are similar, we find out that the average total treatment of the osteosynthesis of the fracture of the diaphysis was shortened for 2,5 months depending upon the type and the localisation of the fracture. Apolied methods of the operative and conservative and conservative treatment in relation to the velocity of the medical cure as well as to the extreme anatomical-functional results are analised. We noticed that osteosynthesis, made by the intermedullary nail and the extension of the canals or by a small AO table, by the achieved stability makes conditions of immediate motions and an early rehabilitation. Because of that it gives the best functional results.