贵溪冶炼厂提高铜电解始极片垂直度的实践

介绍了贵溪冶炼厂始极片生产加工工艺,分析了影响始极片垂直度的主要因素,叙述了为提高始极片垂直度对种板生产及加工机组所做的改进及取得的效果     

降低始极片加工机组提升机故障率实践

提升机是传统法电解始极片加工机组的关键设备,直接影响到始极片加工机组的作业率,贵溪冶炼厂电解车间通过对提升机吊钩销轴尺寸及材质的分析与改进,提高了销轴的力学性能,大幅降低了提升机故障率,为生产安全顺行提供了强有力的技术保障。     

大极板始极片机组综合矫平装置及其改进

介绍了国产大极板始极片机组的综合矫平装置,分析了影响始极片平面度的各种原因．提出了提高始极片平面度的多种方法,探索大极板始极片机组提高阴极板悬垂度的有效措施。     

始极片整形机组提升机改进

分析了从日本引进的铜电解始极片整形机组提升机故障原因,介绍了实施改进实践和效果。     

基于PLC的镍电解始极片加工机组全自动控制系统

镍电解始极片全自动加工机组的控制系统采用PLC控制,在控制系统中结合各种行程开关、光电开关、传感器和电磁阀实现各机构的行程、运动控制和机组的电、液、气控制。在机组中,由于动作要求（频繁的正反转或起停动作）而使用步进电机的机构,如滑车的运动、阴极板输送和提升机构的运动,皆不能由异步电机代替。在步进电机的控制上,采用专用的步进电机驱动器控制。气压和液压系统的控制采用电磁换向阀、单向阀、溢流阀、单向节流阀等液、气压元件进行控制。主要内容包括选择控制方案,设计电气系统,以及PLC程序设计。除此以外,对冲铆机结构三维设计,以及自动放棒装置原理分析、方案拟定,均作了相应的介绍。     

种板打磨改善铜始极片质量的生产实践

始极片是传统铜电解生产的核心,除工艺参数控制和添加剂的种类、数量主要影响其质量外,种板的打磨情况也是影响始极片质量的关键因素。本文对电解分厂采用机组打磨种板改善始极片质量及其实施过程的优化措施进行了介绍,对种板打磨影响始极片质量的机理进行了分析,并对其在生产实践中的打磨质量、效率、槽电压和始极片质量、成品率、经济效益等固化效果进行了详细的阐述。     

镍始极片加工机组钉耳装置的优化设计

针对国内某镍冶炼厂镍始极片加工过程的智能化、绿色化、快速化的加工要求,对镍始极片的钉耳环节进行了优化设计。分析了钉耳环节中掉耳的原因,创新设计了补钉模式的加工方法,即将始极片放入钉耳进工位,系统自动补钉左耳,并且对钉耳时的压紧力进行仿真分析,选取最优解。同时对送耳环节也进行了优化,结合上料方便和安全性考虑,通过机械手正反翻面,确保放上的始极片均为左边缺耳。试运行结果表明,优化后的钉耳装置加工出的始极片,其合格率得到极大提高,掉耳率由5%左右降为0。     

大极板始极片机组排板装置及其改进

为适应电解工艺的改进,提升国产第一代大极板始极片机组的生产能力,需对其排板装置进行改进。改进前的大极板始极片机组排板装置采取了与进口机组类似的结构,基本满足机组自动化作业的要求,机组生产能力达到380块/h。通过对排板装置结构的改进,缩短了提升拨板工序的工作时间,提高了机组的生产能力,可以满足600块/h的生产需求。     

提高铜电解阴极加工质量的生产实践

对铜电解始极片机组进行改造,在始极片矫平、压纹、吊耳冲孔、导电棒清洁等方面取得显著效果,阴极铜生产过程中的各项指标得到提高。     

金川集团6万吨电解镍改造工程产出首批镍

甘肃省重点项目——金川集团公司镍冶炼厂6万吨电解镍扩能改造工程,于8月9日产出第一批电解镍。首批电解镍的出槽,为该项目后期阳极排板、电镍洗涤、始极片剥离和始极片加工等联动机组的带负荷试车创造了条件。同时也为整个项目的正式投产积累了经验,为完成公司今年新增3000吨镍产量任务提供了保障。     

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。     

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。     

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.     

Quality of life of relatives of mental patients

Usage of quality of life of psychiatric patients' relatives as the parameter of estimation of the quality of psychiatric care is considered. By means of standard questionnaire elaborated by the authors as well as by means of both individual and group conversations the quality of life was analyzed in 40 relatives which lived together with psychiatric patients. Different spheres of their life and difficulties (financial, social-psychologic, production) were examined in families with such patients. The defects of psychiatric care that had direct influence on the quality of life of the psychiatric patients' relatives are outlined.     

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)