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首页> 外文期刊>International Journal of Applied Engineering Research >Results of Carrying Out of Researches with Revealing of Technological Parameters of Processes of Recycling and Neutralization of the first and Second Cut of the Spent Pot Lining of Electrolyzers for Reception of Aluminum Fluoride
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Results of Carrying Out of Researches with Revealing of Technological Parameters of Processes of Recycling and Neutralization of the first and Second Cut of the Spent Pot Lining of Electrolyzers for Reception of Aluminum Fluoride

机译：揭示回收利用工艺参数的研究结果和中和电解槽的第一次和第二切割的含水罐衬里，以接收铝氟化铝

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摘要

The spent pot lining (SPL) of aluminum electrolyzers contains significant amounts of carbon, refractories, fluorides. In addition, in the SPL contains metals, nitrides, carbides, hydroxides, carbonates, and free cyanides and iron cyanides. The scales of technogenic impact of aluminum plants on the environment is determined by the technical level of production. Therefore, the solution of environmental problems is directly related to the technical improvement of existing production. The spent cathode lining of aluminum electrolyzers consists of carbonaceous and aluminosilicate parts, impregnated with electrolyte melt, metal and products of interaction of the listed components. In addition, the spent pot lining has the most complex material composition. Domestic aluminum plants, when dismantled, remove metallic aluminum, steel blooms and a peripheral layer of refractory bricks, and are sent to landfills of solid industrial waste for storage. To date, there has not been proposed a universal technical solution that would solve all the problems associated with spent lining. Methods of analysis and instrumentation taking into account the features of the analyzed samples and in order to obtain the minimum error, it is expedient to use a combination of several methods for determining chemical and phase composition of the investigated substances. Also, the use of a set of methods in studies will allow us to determine the most effective analytical control scheme for process control in the practical implementation of technology. Experiments with water and caustic are carried out in full. Experiments with sulfuric acid and aluminum sulfate are carried out at the zero level of factors. In the case of negative results (low level of fluoride extraction, high silica level) the work is suspended. The obtained results of the experiments are processed with the derivation of conclusions and the determination of the possibility of patenting. Particular attention is paid to the content of cyanides and fluorides. In the case of high cyanide content, additional studies are carried out to neutralize cyanides and use iron salts (FeSO_4 and others) or other methods. Based on the data obtained, an environmental assessment of the application of hydrochemical methods is performed in comparison with thermal and flotation methods.
机译：铝电解器的花盆衬里（SPL）含有大量的碳，耐火材料，氟化物。另外，在解含有金属，氮化物，碳化物，氢氧化物，碳酸盐和自由氰和铁氰化物。铝厂对环境的介绍影响的尺度由生产技术水平决定。因此，环境问题的解决方案与现有生产的技术改进直接相关。铝电解器的花费阴极衬里由碳质和硅铝酸盐零件组成，浸渍电解质熔体，金属和所列组分的相互作用。此外，花盆衬里具有最复杂的材料组成。国内铝厂，拆卸时，去除金属铝，钢盛开和耐火砖的周层，并被送到固体工业废物垃圾填埋场进行储存。迄今为止，尚未提出一个通用技术解决方案，可以解决与花衬有关的所有问题。考虑到分析样品的特征的分析和仪器方法，以获得最小误差，有利的是使用几种方法来确定所研究的物质的化学和相组成的方法。此外，在研究中使用一组方法将使我们能够确定技术实际实施中的过程控制中最有效的分析控制方案。水和腐蚀性的实验完整进行。硫酸和硫酸铝的实验在零因素水平下进行。在负面结果（氟化物萃取水平低，二氧化硅水平）的情况下，工作悬浮。实验的所得结果随着结论的衍生和测定获得专利的可能性。特别注意氰化物和氟化物的含量。在高氰含量的情况下，进行额外的研究以中和氰化物，并使用铁盐（FeSO_4等）或其他方法。基于所得数据，与热和浮选方法相比，进行了对水化学方法的应用的环境评估。

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  • 作者

    Kondratiev V. V.; Rzhechitskiy E. P.; Ershov V. A.; Bogdanov Y. V.; Karlina A. I.;

  • 作者单位

    Department of Innovative Technologies Irkutsk National Research Technical University Institute of Physics and Technology;

    Department of Innovative Technologies Irkutsk National Research Technical University Institute of Physics and Technology;

    Department of Innovative Technologies Irkutsk National Research Technical University Institute of Physics and Technology;

    Environmental Technology Department RUSAL Engineering Technology centre Irkutsk National Research Technical University Institute of Physics and Technology;

    Department of Innovative Technologies Irkutsk National Research Technical University Institute of Physics and Technology;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程基础科学;
  • 关键词

    Aluminum electrolytic; Lining waste; Recycling; Flotation;

    机译：铝电解;衬里垃圾;回收;浮选;

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