烧结矿振动筛的改进及其效果

介绍了攀钢３＾＃高炉沟下筛分设备改进情况，并就烧结矿入炉粉末降低后，在改善高炉料柱透气性、稳定煤气流分布、提高煤气利用率和冶炼强度、增铁节焦效果等方面进行分析。试验表明：在现有原燃料条件下，降低烧结矿入炉粉末１％，可使攀钢３＾＃高炉降低焦经０．２％，增加生铁产量１％。     

烧结矿分级入炉技术实验研究

在实验室冷态高炉模型上对烧结矿分级入炉技术进行了研究，测试了不同分级布料方式时料柱阻损、透气性指数、煤气流分布、矿焦比、压力场与速度场等参数。实验结果表明，实施烧结矿分级入炉可降低料柱阻损，改善透气性。     

马钢2500m3高炉提高煤气利用率的措施

马钢2500m3高炉结合自身的原燃料条件及设计炉型,通过采取中心加焦、烧结矿分级入炉、提高煤粉燃烧率等措施,保持了较高的煤气利用率,实现了高产低耗.     

邯钢西区1#3200 m~3高炉炼铁技术进步

对邯钢西区炼铁厂1#高炉炼铁技术进步进行了总结。通过优化布料方式,改善休复风模式,实行烧结矿分级入炉,完善炉前操作设备,采取空气煤气双气预热及富氧烧炉,焦丁全部入炉等技术,为降低吨铁成本做出了突出贡献,取得了良好的经济效益。     

马钢2500m^3高炉提高煤气利用率的措施

马钢2500m^3高炉结合自身的原燃料条件及设计炉型，通过采取中心加焦、烧结矿分级入炉、提高煤粉燃烧率等措施，保持了较高的煤气利用率，实现了高产低耗。     

烧结矿分级入炉技术在酒钢7号高炉的应用

对烧结矿分级人炉技术在酒钢7号高炉的应用进行了总结。7号高炉成功应用烧结矿分级入炉技术后,取得了明显成效:一是,技术经济指标明显改善,煤比由132.2 kg/t降低至125.7 kg/t,燃料比由556.9 kg/t下降至553.7 kg/t;二是,炉况稳定性明显提高,改善了煤气利用率,煤气利用率从45.38%上升至46.39%;三是,边缘热负荷得到有效控制,减缓了冷却壁破损,炉身第2段温度呈下降趋势,第8、9段冷却壁水管破损有所减缓。     

包钢3#高炉合理煤气流分布的探索

煤气流分布对于高炉冶炼具有重要影响,包钢3#高炉在中修开炉后以经济指标为参考,通过对上下部调剂的数据分析,提出了高炉合理煤气流分布的控制区间,实现了煤气流分布的合理控制,达到了煤气利用率提高、焦比降低的目的,保持了高炉长期的稳定、顺行.     

论高还原性烧结矿的生产

本文就高炉冶炼提出对烧结矿质量要求,并对烧结矿的常温、低温、中温,高温性能要满足高炉生产要求进行了论述。特别在当前高炉强化生产、提高煤气利用率和降低能耗过程,对烧结矿中温还原性能的提高显得更为重要。也是当前烧结矿生产的技术关键和主要任务。     

宝钢高品位烧结矿生产技术实践

随着宝钢3号高炉大修及四烧结投产,烧结与高炉相继形成"3对3"与"4对4"的生产格局,烧结矿与高炉铁水的供需矛盾得以缓解,同时为高烧结矿比铁水冶炼、高品位烧结矿生产技术攻关等创造了条件。生产实践表明,通过采取配加4.5%~5.0%的磁铁矿精粉、确立合理的烧结矿Si O2控制区间、降低辅料配比等措施,实施低碱度低硅烧结,可有效地将入炉烧结矿品位提高至58.5%的水平,且烧结生产指标良好,烧结矿实物质量稳定,烧结过程受控。高品位烧结矿入炉大大降低了铁水冶炼成本。     

韶钢8号高炉低燃料比冶炼实践

总结韶钢8号高炉低燃料比冶炼的管理措施和操作实践。通过加强入炉原燃料质量的管理,实现低渣量冶炼,优化高炉操作制度,提高煤气利用率,稳定炉况;提高热风温度、适宜的富氧,实施低硅冶炼技术,加强炉外出铁的管理,不断提高煤比、降低焦比,使8号高炉燃料比下降到505 kg/t左右,达到全国同类型高炉先进水平。进一步降低生产消耗及成本,使高炉各项技术经济指标大幅度提高。     

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。     

显微维氏硬度测量不确定度评定

对显微维氏硬度测量不确定度进行评定，建立了不确定度计算的数学模型，确定了影响实验结果的各项因素，计算出了各因素的标准不确定度，得出结果的扩展不确定度，并给出最终测量结果的表达式。     

Concept of freedom of infection of animal flocks

Totally negative results of epidemiological investigation of random samples do not prove the absence of the infection as the pathogen may be restricted to only a few animals in the herd for a long time. The statement "absence of infection" is critical for such situations. The question is raised, whether the statement "absence of infection" should be generally avoided. Classification of herds and flocks according to the prevalence of the pathogen would be more valid for the implementation of control measures.     

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.