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1.
承钢高炉冶炼钒钛磁铁矿。通过设备改造、改善原燃料条件、采用高风温、富氧、湿喷、优化高炉操作等一系列措施,技术经济指标得到较大改善。2002-2003年煤比达到150kg/t以上,2004年上半年达到183kg/t。高炉顺行良好。  相似文献   

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承钢高炉冶炼钒钛磁铁矿。通过设备改造、改善原燃料条件、采用高风温、富氧、湿喷、优化高炉操作等一系列措施.技术经济指标得到较大改善。2002~2003年煤比达到150kg/t以上,2004年上半年达到183kg/t。高炉顺行良好。  相似文献   

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孔凡朔 《山东冶金》2005,27(1):9-11
改善炉内透气性、保证高炉良好的热状态是提高喷煤量的关键,济钢350m^3高炉通过采取设备改造,优选喷吹用煤,改善炉渣性能,调整操作参数,提高风温及富氧率等措施,煤比大幅度提高。2003年6月350m^3高炉平均煤比153kg/t,4%#高炉煤比达到181kg/t,入炉焦比降低到330kg/t。  相似文献   

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姚廷利  张振峰  张永恒 《炼铁》2005,24(2):47-50
对承钢高炉富氧喷煤的经验进行了总结。通过设备改造、改善原燃料条件、采用高风温、富氧、混喷、优化高炉操作等一系列措施,技术经济指标得到较大改善,2002~2003年煤比达到150kg/t以上,2004年上半年达到183kg/t,高炉顺行良好。  相似文献   

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太钢2号高炉自1999年5月采取高炉槽下过筛,提高风温,富氧喷吹及加强高炉操作等措施,高炉技术经济指标大幅度提高,利用系数连续4个月达到2.8以上,入炉焦化降至404kg/t,煤比达130kg/t跻身于全国同类型高炉前列。  相似文献   

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高小块焦比操作对高炉透气性和煤气流分布的影响   总被引:4,自引:0,他引:4  
宝钢2号高炉通过生产操作探索,在160~170kg/t煤比下将小块焦比提高到60kg/t水平。根据高炉生产操作结果,结合实验研究,分析了50kg/t以上高小块焦比操作对高炉透气性和煤气流分布的影响,并阐述了相应的操作控制措施。  相似文献   

7.
重钢750m^3高炉通过改善原燃料条件,改进高炉操作,加强基础管理,2005年喷煤比提高到113kg/t。2006年在继续保持高炉稳产的同时,对提高喷煤比进行了进一步的技术措施的探索。使750m^3高炉喷煤比达到125kg/t,取得了较大的进步。  相似文献   

8.
天铁集团对5^#高炉进行了大修改造,高炉大修改造后,具备了优化操作的条件,高炉利用系数已由大修前平均2.5t/m^3.d达到3.20t/m^3.d的水平,煤比达到了150kg/t.Fe以上,实现了强化冶炼。  相似文献   

9.
在1050m^3高炉投产后,针对高炉喷煤堵抢、堵管严重,制粉、喷吹系统及炉顶布料系统故障率高,高炉炉况不稳,风温使用水平低,致使煤比仅在70—100kg/t的问题,通过对其影响因素进行综合分析,系统地进行了技术改造,优化了相关条件,合理操作和管理,使高炉煤比达到140kg/t以上。  相似文献   

10.
莱钢喷煤技术进步   总被引:2,自引:0,他引:2  
罗登武  王子金  刘元意 《钢铁》2003,38(6):4-5,23
分析了莱钢高炉喷煤特点,通过采取改善原燃料条件,加强高炉操作,提高风温等措施,莱钢750m^3高炉煤比达到了180kg/t,高炉利用系数达2.7。  相似文献   

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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)  相似文献   

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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.  相似文献   

17.
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.  相似文献   

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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。  相似文献   

20.
《Acta Metallurgica》1989,37(3):803-811
Acoustic measurements have been performed in the vicinity of the h.c.p.-f.c.c. phase transition in cobalt. The main results are the following: At low frequency (~ 1 Hz), a high transitory internal friction peak is observed. It is shown that this internal friction is a function of T/vT temperature rate, v vibration frequency) but is not proportional to T/v. This behavior is explained in the framework of a recent model based on a Clausius-Clapeyron-like equation expressing the coupling between stress and phase transition; At medium (~5 KHz) and high (~ 20 MHz) frequencies, the transitory internal friction becomes negligible. However, a small peak appears accompanied by an elastic modulus decrease. It is shown that these anomalies are related to the shear modes parallel to the transformation plane. Thus, they might be related to the motion of the partial dislocations composing the h.c.p.-f.c.c. interface.  相似文献   

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