干馏煤对包钢烧结生产影响分析

针对干馏煤破碎粒度可控性差、水分偏大、燃烧速度不均等不足,通过强化燃料粒度控制、优化操作工艺等措施,解决了焦粉与干馏煤混合配加的难题。干馏煤最大配比占燃料消耗53%,烧结生产整体平稳顺行,产量提升,烧结矿质量稳定。烧结机利用系数提高0.021 t/m~2·h,固体燃耗降低5.87 kg/t,烧结矿FeO含量降低0.18个百分点,转鼓指数提高2.11个百分点,RI提高1.77个百分点。     

钒钛磁铁精矿烧结添加矿化剂生产实践

本文总结了在攀钢烧结机上配加矿化剂的生产情况,分析了配加矿化剂对强化钒钛矿烧结的效果。实践表明:配加0.04%的矿化剂后,其在烧结过程中的催化、矿化作用增加钒钛烧结液相量,改善钒钛烧结矿矿相结构,烧结矿转鼓强度提高了1.61个百分点,低温粉化率降低4.99个百分点,达到提高钒钛烧结矿强度、降低粉化率、降低能耗的目的。     

高比例配加外粉的烧结生产实践

针对河钢宣钢外粉配比升高后,烧结负压大幅下降、烧结矿强度和粒级等质量指标出现下滑的问题,通过实施800 mm厚料层生产、降低入烧混合料水分、优化入烧燃料粒度、提高点火负压等工艺参数控制,以及优化烧结矿FeO和MgO含量、改进布料方式、控制返矿质量,烧结工艺过程稳定、可控;烧结矿转鼓强度指标维持在78. 5%左右,烧结矿粒径提高到平均20. 5 mm;还原性指标提高至80. 3%,达到历史最好水平。优化措施实施后,烧结矿质量及性能可较好地满足高炉的生产要求。     

酒钢烧结新技术研究及工业应用

通过试验室试验,在酒钢2#烧结机上成功应用了厚料层烧结新技术。改造后料层高度由原来的512 mm提高到最高700 mm;烧矿固体燃耗同比下降了7.69 kg/t,下降13.73%;烧结矿FeO含量与改造前相比下降了1.09个百分点,同时烧结矿冶金性能相应提高。经计算仅节约烧结固体燃耗一项年可获经济效益687.6万元。     

烧结厂265m~2烧结机配加蛇纹石工业试验的研究与实践

莱钢烧结厂新二区265m^2烧结机配加1％蛇纹石工业试验表明：配加1％蛇纹石后．烧结矿中磁铁矿、铁酸镁和铁酸钙增加,形成中孔厚壁结构,烧结矿低温还原粉化指数得到显著改善;烧结机利用系数提高0．06t／（m^2·h）,烧结矿转鼓指数提高0．1个百分点．烧结矿RDI＋3.15提高7．56个百分点。     

提高烧结矿转鼓强度的试验研究与生产实践

介绍了马钢380m2烧结机烧结矿转鼓强度的试验研究与生产攻关实践。结果表明：800mm厚料层、合理配矿和适宜的工艺操作参数等措施,可有效提高、稳定烧结矿转鼓强度,能够满足4 000m3高炉的生产需要。     

酒钢厚料层均质烧结技术研究及工业应用

通过技术合作，在酒钢2^#烧结机上成功应用了厚料层均质烧结新技术。改造后料层高度由原来的512mm提高到最高700mm；烧结固体燃耗同比下降了7．69kg／t，下降13．73％；烧结矿FeO含量与改造前相比下降了1．09个百分点，同时烧结矿冶金性能相应提高。经计算仅节约烧结固体燃耗一项年可获经济效益687．6万元。     

钒钛磁铁精矿复合烧结参数优化研究

针对高钛磁铁精矿烧结存在的烧结矿强度较低、返矿率高、产量低等问题,采用了复合烧结工艺并进行了参数优化试验。结果表明,对综合指标影响最大的为混合料水分,其次为料层厚度。与基准相比,最优方案的烧结利用系数提升20%以上,烧结矿强度、成品率分别上升3个百分点,5个百分点以上,烧结矿的铁酸盐体积含量增加4~5个百分点,烧结矿冶金性能得到不同程度改善。     

混匀铁料粒度组成对烧结生产的影响研究

通过分析阳春新钢铁2013～2014年混匀铁料粒度组成与1台198 m~2烧结机生产数据的对应关系,得出在阳春新钢铁铁矿石资源以及烧结料层厚度为700 mm条件下,烧结透气性和烧结矿平均粒度与混匀铁料中的-200目、60～20目、20目～3 mm这3个粒级含量相关性明显,并结合烧结生产要求,总结得出这3个粒级的适宜控制范围。     

改善烧结矿粒度组成

太钢炼铁厂通过改造烧结机点火器、推行低负压点火、控制冷热返矿数量及质量等技术措施的实施，减少烧结矿中-10mm粒级，改善烧结矿粒度组成，取得较好生产效果。     

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.