铝电解槽角部阳极高度调整降低阳极毛耗实践

吨铝阳极毛耗是铝电解生产的一项重要指标,降低阳极毛耗成为降低生产成本、增加经济效益的有效途径。本文从生产实际出发,分析330 kA电解槽角部和中间区域的残极高度,通过调整角部阳极高度降低角部残极高度,达到降低吨铝阳极毛耗的目的。试验数据表明,角部极高度由610 mm调整到600 mm,折合吨铝阳极毛耗降低1.6 kg,降低了吨铝成本,增加了企业经济效益。     

论侧插自焙槽阳极角部保温及小头配棒技术

介绍侧插自焙铝电解槽角部保温和小头配棒技术的工业试验及生产效果。综合测试并分析了铝电解槽的散热损失和阳极电流分布规律,取得了少投入多产生的技术经济效果。     

铝电解阳极电流精确测量及其应用(续完)

大型工业铝电解槽的控制和管理对电解槽参数的测量提出了新的要求,其中阳极电流及其分布数据最为关键。本文采用光纤电流传感器测量了400 k A双阳极和320 k A单阳极两种类型数台工业铝电解槽中阳极电流、立柱母线电流的分布,测量了一台400 k A电解槽的阴极电流分布,应用描述性统计方法对测量数据进行了分析。结果表明,光纤传感器可以准确测量工业电解槽中电流的变化,测量的电流数据可用于电解槽的状态检测和故障诊断。     

铝电解阳极电流精确测量及其应用(待续)

大型工业铝电解槽的控制和管理对电解槽参数的测量提出了新的要求,其中阳极电流及其分布数据最为关键。本文采用光纤电流传感器测量了400 k A双阳极和320 k A单阳极两种类型数台工业铝电解槽中阳极电流、立柱母线电流的分布,测量了一台400 k A电解槽的阴极电流分布,应用描述性统计方法对测量数据进行了分析。结果表明,光纤传感器可以准确测量工业电解槽中电流的变化,测量的电流数据可用于电解槽的状态检测和故障诊断。     

曲面阴极铝电解槽结构改进及等温线温度测量的分析研究

介绍了针对300 k A曲面阴极铝电解槽生产中存在的问题,采取优化改进电解槽结构,开展等温线温度测量分析研究,表明改进后的曲面阴极电解槽能满足安全、平稳、高效生产的要求,其工艺技术及经济指标达到了国内先进水平。     

阴阳极同宽技术于300kA曲面阴极铝电解槽的工业化推广应用

简述了铝电解的发展和现状,分析论证了阴阳极同宽技术的研发以及在300k A曲面阴极铝电解槽上的工业化推广应用,延长了铝电解槽使用寿命,降低了电解铝单位产品能耗。     

大型铝电解槽角极长的成因与应对措施

角极长对铝电解生产有较大危害,会造成职工劳动强度增加。杜绝角极长,对提高电解槽稳定性,减少原材料浪费具有积极意义。本文针对某厂400 k A电解槽角极长的现象,分析原因,对角部传热进行计算,从电解槽内村设计、工艺参数调整和操作方法改进三个方面提出了解决办法,为大型预焙槽平稳生产提供一些借鉴。     

炭阳极质量对铝电解生产的影响

随着铝工业的迅速发展,大型预焙铝电解槽的开发和应用也越来越广泛,预焙阳极的需求量也日益增大。炭阳极作为铝电解槽的心脏,其质量和工作状况的好坏对铝电解生产是否正常及电流效率、电能消耗、产品等级等经济技术指标影响十分巨大。要提高阳极质量,原料质量是前提,过程控制是关键。目前,在阳极电流密度方面,我国(0.69～0.74A/cm2)与先进工业国家(0.8～0.9A/cm2)相比还有一定差距。同样大小的电解槽在其它技术经济指标不变的情况下,阳极电流密度为0.8A/cm2的电解槽,其产量比阳极电流密度为0.7A/cm2的电解槽产量高14%,这无疑会使电解生产…     

专利信息

专利名称:异型阴极结构铝电解槽焙烧方法专利申请号:CN201010125436.5公开号:CN101956216A申请日:2010.03.13公开日:2011.01.26申请人:山西关铝股份有限公司本发明具体为一种异型阴极结构铝电解槽焙烧方法,解决了现有异型阴极结构铝电解槽,采用燃烧焙烧方法,存在安装拆卸复杂、电解槽阴、阳极氧化严重,且破坏电解槽槽底保温性能的问题.由石墨粒和焦粒混合作为焙烧介质,焙烧前阴极表面及凸台     

大型预焙铝电解槽焦粒焙烧法启动实践

主要探索大型预焙曲面阴极电解槽焙烧新方法——半空腔焙烧法,铺焦和装物料方法、焙烧期间上抬与不上抬阳极的操作对比,选择中间及四周空上抬阳极半空腔焙烧启动新方法更适合曲面阴极槽焙烧工序,为"槽焙烧安全"奠定基础。     

论从实践理解世界的物质性和自然世界的先在性

马克思主义唯物论是一种物本主义形态的唯物论,还是一种超越物本主义形态、从实践理解世界的本质相关问题的实践的唯物主义的唯物论?这是一个我们必须搞清楚的有关马克思主义唯物论的本质规定性和精神实质的重大问题.在考察物本主义的唯物论及其思维方式的局限性的基础上,揭示了马克思主义唯物论是现代的、实践的唯物主义,并重点研讨了马克思主义唯物论关于从实践理解世界的物质性和自然世界的先在性的原理,以期为马克思主义唯物论进一步阐明人类世界的实践性原理奠定基础.     

Effect of cyproheptadine on the ultrastructure of the neurons of the arcuate nucleus in the hypothalamus of the rat

The data are presented on changes in the rat arcuate nuclear neuron ultrastructure after using cyproheptadine (peritol, Egyt Pharmaceutical Works, Hungary) in a water suspension at a dose of 20 mg/kg once daily during 7 successive days and twice a day within 10 days. It was shown that cyproheptadine decreases the functional activity of the arcuate nuclear neurons, depending on the total amount of the drug used. Cyproheptadine-induced inhibition of the forming neurohormone release from neurons is likely to be one of the mechanisms of its therapeutic effect in Itsenko-Cushing's disease.     

Characteristics of the sympathetic innervation of the nictitating membrane and of the vasculature of the nose and tongue of the cat

Vasomotor responses from the nasal mucosa and tongue, and contractions of the nictitating membrane, were recorded on stimulation of the cervical sympathetic or internal carotid nerves. Preganglionic sympathetic nerve fibres which elicited a membrane response possessed a lower threshold than those which evoked nasal vasoconstriction, while the latter displayed a lower threshold than fibres which evoked tongue vasoconstriction. The sympathetic vasodilator fibres to the tongue whose activity was revealed after alpha-receptor blockade, had a similar threshold to the vasoconstrictor fibres. Membrane contraction, nasal vasoconstriction and occasionally tongue vasoconstriction could be evoked by stimulating the internal carotid nerve. The postganglionic fibres innervating the nasal mucosa had a similar threshold to those of the nictitating membrane, which may indicate that there are small myelinated fibres innervating the mucosa. The preganglionic compound nerve action potential had four major components, S1-S4. S1, S2 and usually S3 fibres were associated with membrane contraction; S2, S3 and sometimes S1 fibres were associated with nasal vasoconstriction; and S3, usually S2 and occasionally S1 fibres were associated with vasoconstriction in the tongue. It is concluded that each of these three groups of nerve fibres, but not S4 fibres, may include fibres associated functionally with the three effectors. There was a considerable difference between the relative amplitude of the responses of the three effectors elicited by stimulation of the cervical sympathetic nerve at frequencies between 0.2 and 2 Hz. Vasoconstrictor responses were relatively larger than membrane contractions suggesting differences in the mechanisms of neurotransmission at the neuroeffector junctions.