海鑫1080m3高炉喷煤系统技术特点

海鑫1080m^3高炉喷煤系统采用中速磨负压制粉，一级高浓度低压脉冲长袋式收粉器收粉，喷吹系统采用双罐并列单管路加分配器浓相输送工艺。喷煤系统是按喷吹烟煤设计的，最大喷煤比200kg／t，年平均喷煤比180kg／t，设备出口煤粉浓度≤50mg／m^3。喷煤系统投运后喷吹无烟煤，在无富氧的情况下，喷煤比很快达到117kg／t，运行效果良好。     

重钢高炉新喷煤装置

重钢高炉新喷煤装置于2001年11月投产，该装置设计喷吹能力为200kg/t，制粉能力为250kg/t铁，采用了直接喷吹方案，制粉系统采用中速磨负压系统，喷吹系统具有浓相输送、双罐并列、喷吹主管加分配器工艺等特点，全厂三座高炉共用一套喷吹系统，属国内外首例。     

柳钢新喷煤系统改造和初步生产实践

通过对炼铁厂新喷煤系统的制粉、喷吹系统进行工艺及设备改造，使球磨机台时产量由设计的20t／h提高到34～36t／h，并且实现全烟煤喷吹，高炉经济技术指标得到了改善。     

马钢二铁总厂3#炉喷吹系统优化实践

马钢二铁总厂3#高炉喷吹系统由于设计的原因，造成喷吹能力不够。通过对喷吹系统设备的优化，喷煤能力由原来的18t／h提高到25t／h。对喷吹操作优化了吹风量和流化量，稳定了喷吹率，避免了少煤和断煤事故的发生，确保高炉喷吹的要求。     

宝钢3号高炉喷吹煤粉装置设计

宝钢3号高炉喷吹煤粉装置采用双系列、双罐串联、总管加分配器直接喷吹方式,设计喷吹能力为120kg/t。制粉系统采用中速磨负压操作,喷吹煤种为强爆炸性烟煤。该装置自1994年10月投产以来,运行状态良好,喷煤量已达到设计能力。     

涟钢2200m^3高炉喷煤控制系统

1引言 在高炉喷煤中，必需保证连续安全可靠喷吹，才能有效降低炼铁成本。因此，在保证控制安全可靠的前提下，实现连续自动喷吹，是喷煤自动控制设计者主要考虑的问题。喷煤改造前涟钢2200m^3高炉一直由喷煤车间老喷煤系统的5#、6#喷吹系统向高炉喷煤，控制系统基本上是在画面上进行手动操作，需要频繁地进行手动倒罐操作，喷吹效率低。不能根据设定喷吹率自动调节罐压及补气流量以基本稳定的喷吹率向高炉喷煤，喷吹率波动很大。另外，喷吹率最大只能到20t／h左右，以高炉正常时日产量5500t铁水计算，煤比约为80kg／t铁水，使得高炉焦比居高不下，极大的制约了炼铁生产成本的下降，大高炉生产的规模效应难以显示，因此，于2003年底开始对2200m^3高炉喷煤进行了改造。     

梅钢高炉喷煤技术进步

2004年梅钢高炉喷煤系统由球磨机制粉、串罐多支管压缩空气稀向输送无烟煤粉喷吹,更新换代为中速磨制粉、3罐并列、炉前主管加分配器、德国KUTTNER公司1罐喷3炉、N2浓相输送混合煤粉喷吹。新工艺投用后,喷煤比从100kg／t快速提高并稳定在150kg／t以上,最高煤比突破170kg／t,喷煤比取得显著进步。     

太钢1800m~3高炉喷煤系统设计及运行

太钢3号高炉喷煤系统采用三罐并列、喷吹主管加分配器的喷吹形式,喷吹装置最大喷吹能力为煤比250kg/t。主要特点：三罐并列喷吹计量准确;采用浓相喷吹,实现了对氮气的回收;使用两段式喷枪、一键式全自动操作等。喷吹系统2007年8月投产,平均煤比180kg/t以上,个别月份达到200kg/t。经过两年的生产实践证明,该系统设计合理,一直处于良好的运行状态。     

炼铁厂喷煤系统发展探讨

炼铁厂喷煤系统现有设计产量10t/h球磨机和中速磨各两台，总制粉量约38t/h，喷吹量35t/h，吨铁煤比约130kg，在现有条件下制粉能力不够，限制了喷吹量的提高，本着重探讨十年喷煤系统发展的思路。     

论武昌焦化厂焦炭质量改善途径

高炉喷煤作为一种降低焦炭耗量的措施目前已广泛得到采用。根据英国钢铁公司的喷煤操作情况，墨西哥高炉公司选择了喷吹粗粒煤，而没有选择喷吹粉煤。该公司的粗粒煤喷吹装置自１９９７年１月投产以来，已达到１００ｋｇ／ｔ铁水的喷吹率，高炉产量已超过设计能力的３５％。     

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。     

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。     

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.     

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。     

参与式农业基地建设行动方案设计

为了编制实用性强的基地建设行动方案,首先,确定参与式发展的主体,搭建一个"决策框架";其次,针对行动目标,提出不同参与主体,如管理者、农民、消费者等团队与个人的目标及行动内容;最后,工作应向重塑伙伴式合作关系,挖掘农民自我发展潜力,完成三大角色的转换,打造农业基地文化等方向推进.