水源井出水量减少原因及恢复途径

１前言宣化钢铁公司动力厂所属十八口水源井是供给１２６０ｍ３高炉、选烧厂、焦化厂、动力厂等生产单位正常用水的重要水源。但是随着开采量的不断增大，１１＃水源井现已干枯报废，１２＃水源井也因水量极少失去开采价值而暂停使用，其它水源井的出水量也呈逐渐减少的趋势，形成了供不应求的尖锐矛盾。因此对水源井出水量减少的原因加以探讨，寻求增加出水量的途径就十分必要。２水源井区地貌及水文地质概述从地貌上看，宣化为一盆地，北有烟筒山，海拔７００米左右；南有黄羊山，海拔１１４０米左右；中有洋河，自西北流向东南，该河常年…     

汽轮机冷凝器胶球清洗系统的安装与使用

１问题的提出唐钢北区动力厂现有５台汽轮鼓风机（分别给１２６０m３和２５００m３高炉供风）２台汽轮发电机（１２MW、２５MW），配有７台冷凝器，随着水资源的重复利用率提高，循环水水质下降，泥沙量上升，冷凝器管壁积垢，冷却效果降低，清洗间隔缩短，２０００年４月，３＃、４＃机酸洗，高压水冲洗，２０００年１０月，１＃、２＃机酸洗高压水冲洗。７台冷凝泵平均三、四个月就要停机清洗１台，停机、倒机次数增加，生产运行成本上升，严重影响我厂生产任务的完成。２解决措施国家水资源政策已定，我厂废水零排放目标已经实现，提高…     

走高起点创新之路—宁波宝新不锈钢公司实现高效率、高效益的情况调查

宁波宝新不锈钢有限公司（简称宝新公司）１９９６年３月成立，工程建设总投资概算约３０亿元，采取“一次规划，分两期建设”。一期工程年设计产量８万吨冷轧不锈钢板、卷。１９９７年５月开工建设，１９９８年１２月１１日建成投产。一期工程建成投产后第８个月达到设计产量，之后连续保持盈利。２０００年公司全面超额完成年度目标。其中：年产量８４８００吨，为年计划的１０６％；销售收入（不含税）１４．１４亿元，为年计划的１０８．１％；合同完成率１００％；实现利润７７３６万元，人均利税３２．７６万元；资本收益率７．３９％…     

湘钢1＃高炉第二代炉龄长寿经验

湘钢１＃高炉第二代炉龄长寿经验湘钢１＃高炉第一代炉龄８ａ，共产合格生铁１４１１４５９ｔ。第二代炉龄１６．７５ａ（１９７７年１０月～１９９４年７月）共产合格生铁４３０４７４９ｔ，比第一代寿命延长８．７５ａ，多产生铁２８９３２９０ｔ。高炉长寿的主要原因是...     

余热锅炉在氧气顶吹平炉及电除尘同步生产中应用与改进

１平炉、余热炉、电除尘同步生产概况武钢一炼钢１＃、３＃、５＃５００吨顶吹平炉采用余热锅炉降温方式，满足了电除尘入口烟气温度低于２５０℃的要求。其余热炉烟气流程见图１、图２。与１＃平炉并联的两台ＫＹ－８０型余热锅炉和６０ｍ２三电场静电除尘器于１９８４年３月投产。３＃、５＃平炉配置的两台ＬＦＧ３０－１８／３７５型立式废热锅炉加１００ｍ２四电场卧式电除尘器分别于１９８５年７月与１９８８年６月联合同步生产。余热锅炉不但能为平炉降温，而且在配置电除尘后，烟气排放浓度低于国家规定１５０ｍｇ／ｍ３，一般控制在…     

技术攻关改善15万m3煤气柜工作状况

１存在问题唐钢北区动力厂１５万m３稀油密封干式煤气柜始建于１９９１年，１９９３年１２月竣工调试，１９９４年１１月才充入高炉煤气投入试运行。该型式气柜，施工精度要求高，难度大，其施工质量的好坏直接影响着日后的生产运行。我单位１５万m３气柜就是由于施工经验少，出现施工质量偏差，投入生产后暴露出许多问题，主要表现在：①气柜试运行１０个月，耗油５７t，且时常出现煤气击穿现象；②密封油易乳化。冬季气柜柜壁挂冰，很难维持正常生产；③活塞右旋严重，导辊严重偏离立柱中心线。导辊偏离柱中心线２６～８８mm不等，一些已…     

国际会议预报

４、腐蚀与防腐２０００年会议　将于２０００年１１月１９～２２日在新西兰奥克兰的ＨｙａｔｔＡｕｃｋｌａｎｄ召开．会议由ＡｕｓｔｒａｌａｓｉａｎＣｏｒｒｏｓｉｏｎＡｓｓｎ主持，参加人数２５０，截稿日期文摘２０００年２月２８日，论文２０００年７月３１日，语种英语．联系：ＳａｌｌｙＮｕｇｅｎｔ，ＰＯＢｏｘ２３４０，ＭｔＷａｒｅｒｌｅｙ，Ｖｉｃｔｏｒｉａ３１４９，Ａｕｓｔｒａｌｉａ，Ｐｈｏｎｅ：６１－３－９８０９－５２６６，Ｆａｘ：６１－３－９８０９－５３４４，ＥＭａｉｌ：Ｃｏｒｒｐｒｅｖ＠ｉｎｔｅｒ…     

遥测遥感技术在宣钢水源井系统的应用

宣钢动力厂共有19口水源井，分布于洋河北岸界地，井位分散、环境条件恶劣。各深井水泵的启停需工作人员到现场手动操作，工作效率低，且每日两次的巡检对设备运转状况又不能适时了解，设备出现故障不能及早发现、及时维修，延误了最佳处理期，造成不必要的物质浪费，同时增加维护检     

简讯

全国冶金工作会议在京召开１９９９年全国冶金工作会议，１月１８日在北京召开，国家冶金局局长王万宾作了工作报告。会议提出冶金工业新年新思路，即控制总量，优化结构，提高经济运行质量和效益．包钢１．５万ｍ～３制氧机投产１９９８年１１月１８日，包钢“九五”规划重点配套基建技改项目──１．５万ｍ～３制氧机建成投产，顺利出氧，成为我国西部地区目前最大、自动化程度较高的大型制氧设备。１．５万ｍ～３制氧机组于１９９８年初启动安装，其安装机械设备１２００ｔ，电器仪表控盘箱１２２面，铺设电缆１００ｋｍ，工艺管道１５ｋ…     

焦炉盲板作业着火事故分析及今后措施

１事故经过因煤化工公司二炼焦车间６＃焦炉地下室焦炉煤气管道需清扫、改造，攀钢动力厂于３月２日在该管道流量孔板处进行堵肓板作业，不幸发生着火事故，烧伤６人．作业情况如下（见附图）。１.１作业前５＃、６＃焦炉停用焦炉煤气，做好作业点施工前准备工作，接好各测压点     

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。     

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。     

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.     

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。     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.