炉前水冷撇渣器捣料配比的改进

南京钢铁厂高炉自1978年5月开始使用水冷撇渣器以来,至今已八年,使用情况良好。随着原燃料条件的改善和800m~3/min风机的使用,撇渣器流过的铁水量增加,铁水对撇渣器的冲刷加剧,同时,随着生铁含硅量的降低,铁水粘度变小,使撇渣器周围的铁水保护层不易形成,从而加快了铁水对撇渣器的侵蚀。为保证撇渣器安全可靠及提高其寿命,2号高炉的炉前工人对原来撇渣器的捣料配比进行了改进试验。第一次试验历时九个多月。每三个月需捣打一次,直到1980年9月过梁蛇形管烧     

南钢高炉水冷炭素撇渣器的制作及应用

对南钢高炉水冷炭素撇渣器的制作过程、使用过程中的维护与保养作了介绍.水冷炭素撇渣器的平均寿命达18个月,通铁量达49万t左右.     

延长撇渣器使用寿命探讨

铁流冲刷、炉渣的化学浸蚀、大闸厚度都会影响撇渣器的使用寿命。为延长撇渣器的使用寿命,对其结构进行改进,加大前沟槽和大闸、将小井和过道截面扩大,增加撇渣器容积,使其过铁量增加1倍以上,使用寿命延长为57－84d。     

活动式水冷撇渣器的设计及应用

活动式水冷撇渣器是根据高炉冷却壁的工作原理设计的。第一台活动式水冷撇渣器于１９９３年２月２７日在安钢４号高炉投入运行，使用寿命长达１７个月零１８天，通铁量达到４０万ｔ。这种活动式水冷撇渣器具有投产少，收益高，维修方便，安全可靠等优点。     

高炉炉前突出问题的解决方法

原料条件的改善，冶炼强度的提高，钒、钛的降低，炉前出现铁口难维护、主沟侵蚀严重、撇渣器寿命大大缩短等几个突出问题，通过使用炮泥添加剂和免烘烤捣打料，有效地解决了这些难题。     

南钢高炉水冷炭素撇渣器的制作及应用

对南钢高炉水冷炭素撇渣器的制作过程、使用过程中的维护与保养作了介绍，水冷炭素撇渣器的平均寿命达18个,爱铁量达49万t左右。     

用自焙炭砖砌撇渣器

撇渣器工作好坏直接影响高炉的正常生产。我厂从1969年开始一直沿用人工捣打炭素撇渣器。使用这种撇渣器,每出一次铁,放小井铁一次,同时用炮泥和河砂补修一次,每周要修砌三次。有时因撇渣器未烤干引起打炮;或因捣打不实容易冲垮。捣打炭素撇渣器不仅劳动强度大,工作条件恶劣,而且很不安全。撇渣器出事故还常影响正常出铁。1985年7月5日我厂利用1号高炉检修机会,用自焙炭砖修砌撇渣器。经过几次放小井铁水试验,观察内衬完整无损,使用两个月后内衬仍无损坏。因效果好,推广到2,3,4号高炉上使用,至今已近一年。1.自焙炭砖与粘结剂材质见(表1、表2)     

济钢水冷炭捣撇渣器寿命达1.5～2年

1987年济钢炼铁分厂综合兄弟厂的经验,制作了水冷炭捣活动式撇渣器,使用寿命已达1.5～2年,铁流量达30～40万t,效果良好。水冷炭捣撇渣器外壳用12～16mm厚的钢板焊制,外形尺寸为2.5m×1.4m×1.5m,撇渣器的四个侧面和底部各有一排蛇形管冷却,过道梁有2排蛇形管冷却。其中2.5m长侧面的水冷管为10根,1.4m宽侧面的水冷管为4根,底部水冷管为7根。冷却水管用φ42mm×5mm的无缝钢管煨制,用细钢筋固定于壳内相应位置。水冷撇渣器的结构见附图。     

活动式水冷撇渣器的应用及改进

活动式水冷撇渣器于1998年元月在柳钢3号高炉首次应用，两年来,通过对用料质量的改进以及改进撇渣器冷却强度不均和局部冷却强度设计偏小的问题，收到了良好的效果，目前使用寿命达到一年以上，鬃铁量大于30万吨。     

热捣撇渣器

一、撇渣器的演变撇渣器是高炉出铁过程中将渣铁分离的一个容器,它经受着高温渣铁的烧蚀和冲刷。正常情况下每个月要从中流过一万多吨铁水,是炉前操作的一个关键环节。我厂高炉五九年投产时,炉前撇渣器系采用58版255M~3高炉通用设计,每炉出铁后要放掉撇渣器内之铁水,进行修补、整理,工人劳动条件很差,工作量大,每周更新一次。六五年底,我们开始进行撇渣器保温,出铁工序大大简化,劳动条件有所改善。为保证新撇渣器易于保温不冻,将撤渣器容量扩大到能容铁水一吨左右,采用沥青砖干砌(见     

Racemose angiomatosis. Comments on the article of D.E. Matsko and I.A.Sokolova. Racemose angioma of the nervous system: tumor or developmental defect? Vopr. onkol. 1966. V.42, No.6. p.91-96

Diversion colitis is thought to result from nutritional deficiencies secondary to fecal diversion. Symptoms include hemorrhagic purulent rectal discharge, abdominal pain, and tenesmus. 5-Aminosalicylic acid (5-ASA) and N-butyrate enemas have been reported to help this condition non-spinal cord injury (SCI) patients. We report the case of a 49-year-old C6 ASIA B tetraplegic man who had received colostomy because of intractable ileus 10 years earlier. He presented with a 2-week history of rectal pain and bleeding. Abdominal and rectal examination on admission were unremarkable. Colonoscopy showed a partial stricture 70cm proximally to the rectum. The colonic mucosa appeared granular and friable with evidence of linear ulceration. Histopathologic study was consistent with colitis. The patient developed fever, abdominal distention, and extensive retroperitoneal air after endoscopy, suggesting colonic perforation. He was treated with daily 5-ASA suppository and total parenteral nutrition for the presumed diagnosis of diversion colitis, and intravenous antibiotics for perforated colon. After 6 weeks of treatment with 5-ASA, the patient had decreased rectal pain and bleeding. This experience suggests that diversion colitis may be a cause of abdominal discomfort in SCI patients and that 5-ASA may be used in the management of diversion colitis.     

Some fundamentals of B. F. Skinner's behaviorism.

Despite B. F. Skinner's prominence, his impressive written corpus, and the many authoritative presentations by others of his approach to psychology, the fundamentals of Skinner's psychology have never been addressed in any comprehensive manner. In this article, the authors take steps to fill this gap by synopsizing Skinner's written corpus into 12 fundamental points that seem to characterize his behaviorism. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

小方坯连铸机的切割设备

现在采用的小方坯连铸机的切割设备，分为机械剪和火焰切割机，机械剪包括电动机械剪和液压剪，而液压剪又有平剪刃和４５°剪刃之分，火焰切割机则分为有动力传动和无动力传动的火焰切割机，对这些切割设备的结构特点和优缺点均进行了分析介绍。     

Educators' perceptions of the D.A.R.E. program

This study examines the perceptions of educators about the Drug Abuse Resistance Education (D.A.R.E.) program, based on the results of a statewide survey among 286 fifth and sixth grade teachers and principals. Educators gave their highest ratings to teacher/officer interaction, the role playing exercises, and the graduation ceremony. Ratings of overall program quality and the impact of the program on students were both high. Block regression analysis was used to examine factors predictive of educators' views of D.A.R.E. D.A.R.E. program elements were the most important factors explaining variance in educators' ratings of over-all program quality and program impact on students. Altogether, 54 percent and 38 percent of the variance in both dependent variables were explained. The results are discussed in terms of the important role teachers and principals play as stakeholders in prevention education.     

E. G. B.: The early years and change of course.

Discusses why E. G. Boring left the laboratory to become the foremost historian of experimental psychology. The position of psychology in general and at Harvard in particular in the mid-1920s is examined, and it is concluded that Boring turned to history because he could not accept the current phenomenological or behavioristic approaches. The Zeitgeist had rendered Titchenerian structuralism obsolete so it was natural for Boring to devote himself to the history of the great sensory tradition. His inclusion of James and Freud among the "very great" psychologists showed his growth in appreciation of men outside the structuralist school. Boring's career exemplified the positive and negative interactions of eponyms with the Zeitgeist which he maintained was an essential factor in the progress of science. (19 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

H. M. revisits the Tower of Hanoi Puzzle.

To address the controversy of whether an intact procedural memory system alone can support the teaming of the recursive strategy for solving the Tower of Hanoi Puzzle, the authors tested 2 amnesic patients, H.M. and P.N. Contrary to the report of N. J. Cohen, H. Eichenbaum, B. S. Deacedo, and S. Corkin (1985), both patients failed to master the recursive strategy under the active-interaction condition. In contrast, normal control participants were able to master the strategy under identical testing conditions. The failure of H.M. and P.N. could not be attributed to the differences between the original and current testing conditions. In addition, neither patient showed frontal lobe dysfunction or impairment in procedural memory. Together with evidence provided by theoretical analyses of this puzzle as well as studies on normal participants, the authors conclude that declarative memory plays a vital role in the acquisition of the recursive strategy for solving the Tower of Hanoi Puzzle. (PsycINFO Database Record (c) 2010 APA, all rights reserved)