铜电解精炼过程中的节能措施与实践

本文结合生产实践,针对铜电解精炼过程中电消耗和蒸汽消耗的问题进行了分析,研究了电解液温度、电解液成分、电流密度、添加剂、阴阳极周期和极间短路对电消耗的影响,同时研究了电解液温度、阴极铜烫洗、换热器热效率和气候因素蒸汽消耗的影响,通过严格控制相关电解工艺技术条件等措施,达到了铜电解精炼过程中节能降耗的目的,这对传统铜电解技术水平的提升具有重要的实际意义。     

浅谈铜电解精炼中的极间短路

论述了在铜电解精炼中极间短路对电流效率和品级率产生的影响，分析了短路的形成原因、种类以及各种短路方式的危害，归纳了各种极间短路的预防措施，给出了极间短路的检查和处理方式。     

降低阴极铜开花粒子数量的途径

本文结合江西铜业集团公司贵溪冶炼厂电解车间的生产实践,分析了造成阴极铜长开花粒子的原因,提出了降低阴极铜开花粒子数量的有效途径和方法,指出了提高始极片单重及降低单重偏差,提高始极片加工后的垂直度是降低阴极铜开花粒子的关键。     

铜电解精炼中阴极铜结粒成因探讨

本文结合生产实际初步探讨了电解精炼中阴极铜结粒原因是由阳极板质量(物理外观、化学质量)、始极片的质量及加工制作、电流密度不均、添加剂加入量及配比、电解液中悬浮物含量偏高等原因导致,根据结粒特征进而分析原因,提出预防和消除结粒,实现阴极铜质量长期稳定的生产。     

缩短电解槽恢复通电时间

对电解传统法生产阴极铜的新系统生产流程进行改造,提高上清液罐的压空速度,缩短“非正常”停电时电解槽恢复通电时间,为提高阴极铜的产量和质量,降低残极率提供有力保障。     

提高铜电积电流效率的方法与实践

为了减少吨铜直流电能消耗,对影响电流效率的短路和漏电损失、杂质离子放电、氢离子放电和阴极铜化学溶解等因素进行分析并提出应对办法。实践表明,同时对短路和漏电损失、杂质离子放电、氢离子放电和阴极铜化学溶解4种因素进行抑制能有效提高电流效率,减少吨铜直流电耗。     

浅谈洗涤设备优化，提升产品质量

随着阴极铜市场的发展，深加工工艺技术的不断创新，用户对阴极铜质量的要求越来越高，阴极铜的表面不允许有残酸。为确保阴极铜的市场竞争力，保证阴极铜质量，通过缩短夹边条更换周期，增设校边装置，加强机组洗涤质量，完善机组程序等一系列措施，消除了阴极铜表面残酸，极大的提升了阴极铜质量。     

提高垣曲冶炼厂阴极铜韧性的生产实践

针对阴极铜在销售过程中存在的质量不合格、阴极铜韧性差的问题,结合垣曲冶炼厂的阴极铜生产工艺流程,对影响阴极铜韧性差的原因进行了分析,并提出了提高阴极铜韧性的有效措施。     

阴极铜底部结粒原因分析及应对措施

某铜业公司电解厂在 2020 年 2 月份出现阴极铜底部长大面积粒子,当月阴极铜平均返修率急剧升至 10.45%,远高于正常生产时的 4%。通过分析阴极铜底部结粒的原因,并及时采取有效应对措施,消除了阴极铜底部长大面积粒子,将阴极铜返修率降至 4% 以下,提高了阴极铜质量。     

降低传统法阴极铜直流电单耗

通过对影响铜电解直流电单耗的主要因素的分析,贵溪冶炼厂电解车间采取提高始极片垂直度、减少系统漏电、提高电解液导电率、合理调整残极率等措施,有效降低了传统法阴极铜直流电单耗,阴极铜电单耗由原来的334.51k W·h/t降低至324k W·h/t。     

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。     

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。     

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.     

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.