提高煤气利用率降低高炉燃料比

莱钢型钢3号高炉经过不断摸索与总结,逐步形成了合理的操作制度,煤气利用率由2012年1月份的4211%逐步上升至10月份的46.73%,燃料比相应地由1月份的517kg/t（Fe）逐步降低至10月份的503kg/t（Fe）,各项技术经济指标保持了较好水平。     

唐钢南区3200m~3高炉提高煤比措施

高炉提高煤比可替代焦炭,降低对日趋紧张的焦煤资源的依赖,是降低生铁成本的有效手段。唐钢南区3200 m~3高炉在风温1200℃、富氧率3.8%的条件下,通过探索合理的操作制度和加强原燃料管理来进行提高煤比操作,喷煤比达到170 kg/t Fe,大焦比降至321 kg/t Fe。     

炼铁厂降低综合焦比实践

总结高炉降低综合焦比的生产操作经验。通过优化高炉操作制度、提高风温、降低铁水含硅和提高炉顶压力等措施,使2009年1～10月份累计综合焦比达到了523.29kg/t Fe,比2008年下降了26.7kg/t Fe。     

宝钢4号高炉提高块矿比例实践

为了降低铁水成本,在宝钢4号高炉探索用块矿部分或全部代替球团矿的炉料结构。在提高块矿比例的过程中,重点从改善高炉透气性和保持操作炉型稳定等方面采取应对措施,高炉炉况稳定顺行,并能保持较高的煤比和较低的燃料消耗:①在烧结矿比例为70%,块矿比例提至20%以上时,高炉连续16个月平均煤比180. 2 kg/t,燃料比483.8kg/t;②在烧结矿比例为58%,块矿比例提至18%以上时,连续8个月平均煤比162.5kg/t,燃料比478.4kg/t。     

柳钢5~#高炉加废钢降成本分析与实践

根据理论物料平衡和区域热平衡计算高炉炉料结构中配加废钢对生铁成本的影响结果,在柳钢5~#高炉进行配加废钢生产实践,用生产数据分析了配加废铁后的降燃料比效果。结果表明:加废钢后在冶炼强度变化不大的情况下,产量随废钢加入量的增加而增大;且废钢比每增加30 kg/t Fe入炉时,燃料比下降3 kg/t Fe左右;试验期间对高炉炉况及冶炼过程参数的影响不明显。     

神户3号高炉粉煤大喷吹操作实践

1.绪言 神户3号高炉(内容积1845m~3)在连续42个月喷煤比100kg/t以上的基础上,于1990年4月强化煤粉制备设备开始转向煤粉大喷吹操作.1991年6月,超过了预定目标喷煤比180kg/t,月平均达182kg/t,创日本新纪录.此后,喷煤比一直顺利地保持在180kg/t的水平上。     

邯钢4号高炉降低燃料比实践

邯钢4号高炉近年来经过不断实践和探索,改善原燃料条件、优化高炉操作、提高风温、富氧喷煤等措施,使得煤比大幅度提升至164.7 kg/t Fe、焦比下降到了295.7 kg/tFe,燃料比500 kg/tFe以内,取得了良好的经济效益.     

天津钢铁集团炼铁厂多举措开大“喷吹阀”喷煤比突破170kg／t创新高

六月份以来,随着“双对标”工作的不断深入,炼铁厂通过优化工艺,提升操作水平,实现高炉综合喷煤比突破170k#t·Fe。其中1^#高炉喷煤比167．94kg／t,掣高炉喷煤比172．89kg/t,均创历史最好水平。     

降低高炉燃料比的措施及效果

针对原料不稳定、高炉喷煤量低、热风炉风温低且不稳定现象,通过加强槽下筛分管理,恢复热风炉助燃空气和煤气的双预热,对炉前输煤管路、喷枪装置进行改造,采用焦丁混装技术等措施,安钢永通2号高炉燃料比由535 kg/t Fe降到了527 kg/t Fe,实现了高炉低成本运行。     

提高转炉废钢比降低铁水消耗的措施

首钢第二炼钢厂210t转炉,提高废钢比,降低铁水消耗的主要措施和效果:增加日产炉数,减少空炉时间(+31kg/t);出钢温度降低30℃(+18kg/t);使用单流道双流氧枪(+15～25kg/t;多加生铁块,平均为70kg/t(+21kg/t);铁水硅保持0.45％和提高铁水温度(+14kg/t);降低石灰用量,减     

1969 C.P.A. Institute.

Presents the program for the C.P.A. Institute entitled "The Role of Counseling Services on the Contemporary Campus." The Institute was held on June 2-3, 1969. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Rats, Man . . .

Comments on the article by Richter entitled "Rats, Man, and the Welfare State" (see record 1960-02810-001). The commenter notes that in his article Richter did not indicate how hereditary and environmental factors were controlled. In comparing the hereditary survival characteristics of wild versus domesticated rats, it would be essential that the environmental influences on the survival characteristics of the wild rats should be ruled out. Another factor to be considered is that the wild state may offer a diet and other environmental influences, which in the life of a single individual would produce organic changes, accounting for some of the differences between wild and domestic rats. It would seem that the most effective way to determine the hereditary differences between wild and domestic rats would be to create a wild group, composed solely of the offspring of wild rats. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Laudatio: Prof. Dr. med. Dr. phil. Dres. h. c. Heinz H?fner

During the course of a year, there are many healthcare workers nationwide who sustain sharps injuries whilst carrying out their duties. Staff who work in the Accident and Emergency (A & E) units are no different from anyone else in this respect. The emotional cost of such an accident cannot be calculated, whereas the financial costs can. This article aims to show how the cost of an injury to a member of staff can be calculated, thus allowing a manager to assess the financial implications of sharps injuries to their department. In the absence of access to an Occupational Health (OH) department, most A & E units have to respond to sharps injuries to healthcare workers in the hospital. This task must be attended to by the medical staff as well as the nursing staff of the A & E unit. Within the following text the appropriate responses and methods to ensure uniformity of response are discussed. The tables and the calculation figures shown are taken directly from the information held in the St James's University Hospital Trust's OH department. All calculations are based on the middle band of the salary scale for each discipline. Accurate costings for each member of staff injured cannot be shown in this article, but the general principle is laid down and can be easily followed for any situation.     

The blood-brain barrier. I. Histology. Physiology. Embryology. Transport

The concept of blood-brain barrier (bbb) arose in the beginning of the 20th century after report that the dyes injected intravenously did not appear in the brain. The idea and definition of bbb has been changed many times since then. We present current opinion concerning bbb, its histology, embryology, ultrastructure and function on the ground of a review of the recent literature.