鼓风炉熔炼高铅氧化渣的生产实践

叙述了鼓风炉熔炼高铅渣的生产实践,介绍了延长鼓风炉和电热前床使用寿命,提高鼓风熔炼能力和降低渣含铅所采取的措施和取得的效果。     

鼓风炉熔炼高铅氧化渣的生产实践

叙述了鼓风炉熔炼高铅渣的生产实践,介绍了延长鼓风炉和电热前床使用寿命,提高鼓风熔炼能力和降低渣含铅所采取的措施和取得的效果。     

SKS炼铅工艺降低鼓风炉渣含铅的生产实践

介绍了SKS炼铅工艺的生产实践，并从渣型、鼓风炉还原能力及操作等方面探讨了降低鼓风炉渣含铅的途径和方法。     

SKS炼铅工艺降低鼓风炉渣含铅的生产实践

介绍了SKS炼铅工艺的生产实践,并从渣型、鼓风炉还原能力及操作等方面探讨了降低鼓风炉渣含铅的途径和方法。     

高铅渣粉末制团试验

水口山炼铅法生产过程中,有一定量的高铅渣筛下物及风化粉料产生,将其返回底吹炉再次熔炼经济上不合理.为此提出了将高铅渣粉末制团后直接送鼓风炉处理,探讨了高铅渣粉末制团的工艺条件对团块性质的影响.     

氧气底吹炉高铅渣铸渣工艺的改进

对氧气底吹炉氧化—鼓风炉还原炼铅系统高铅渣铸渣工艺进行改进,将高铅渣的铸块方式由间接式改直接式,达到了节约投资、节省运行费用的目的。     

高铅渣制孔铸锭技术创新

针对我国顶吹和底吹-鼓风炉炼铅工艺,所产高铅渣均为致密熔结物,结合青海西豫有色金属有限公司目前生产现状,鼓风炉还原需要二次配料以适应鼓风熔炼,与烧结块比增加了还原难度、能耗高、渣含铅高、床能力低及炉顶温度高等缺点。因此,将高铅渣的物化性质在较小的投资下,优化转换甚至高于烧结块的物化性质,更加适应于鼓风炉的熔炼,从而解决这一难题,起到节能降耗的作用。创新方案实施及对节能方面进行了较详细的分析论证。     

影响铅鼓风炉炉渣含铅的因素分析

介绍了铅鼓风炉的基本参数和熔融炉渣的物理化学性质.在总结铅鼓风炉生产实践的基础上,分析了影响铅鼓风炉渣含铅的因素,指出了降低炉渣含铅的途径.     

高锌渣料烟化炉吹炼获突破

今年6月份，株冶集团铅老系统烟化炉锌回收率达到80％，这是该系统自今年加大渣料处理量以来锌回收率的最高值，标志着铅系统渣料资源化的进一步实现。铅老系统加大渣料处理之后锌元素进入系统的比例上升，4月份，鼓风炉渣含锌由1至3月份的12％上升至13％，5月份，鼓风炉渣含锌更是达到了15．56％的历史新高。高锌鼓风炉渣的处理给烟化炉带来新的挑战，依目前现有烟化炉设备和工艺条件，烟化炉原有操作无法达到锌的回收指标。     

铅原料结构变化下鼓风炉经济渣型的研究

讨论了铅冶炼过程中，鼓风炉炉渣中铅的主要存在形式。铅损失途径以及影响炉渣性质的主要因素。对鼓风炉渣型的优化进行了研究，确定了改善鼓风炉渣型的具体措施并应用于生产实践中，创造了非常可观的经济效益。     

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.