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Vapour Treatment Method Against Other Pyro-and Hydrometallurgical Processes Applied to Recover Platinum From Used Auto Catalytic Converters

引用

Acta Metallurgica Sinica(English Letters) 2013年第3期26卷 247-256页

作者： Agnieszka FORNALCZYK mariola saternus Silesian University of Technology Metallurgy Departmentul. Krasinskiego 8 40-019 Katowice Poland

Today more and more cars are produced every year. All of them have to be equipped with catalytic converters, the main role of which is to obtain substances harmless to the environment instead of exhausted gases. Catalytic converters contain platinum group metals （PGM） especially platinum, palladium and rhodium. The price of these metals and their increasing demand are the reasons why today it is necessary to recycle used auto catalytic converters. There are many available methods of recovering PGM metals from them, especially platinum. These methods used mainly hydrometallurgical processes; however pyrometallurgical ones become more and more popular. The article presents results of the research mainly concerning pyrometallurgical processes. Two groups of research were carried out. In the first one different metals such as lead, magnesium and copper were used as a metal collector. During the tests, platinum went to those metals forming an alloy. In other research metal vapours were blown through catalytic converter carrier （grinded or whole）. In the tests metals such as calcium, magnesium, cadmium and zinc were applied. As a result white or grey powder （metal plus platinum） was obtained. The tables present results of the research. Processing parameters and conclusions are also shown. To compare efficiency of pyrometallurgical and hydrometallurgical methods catalytic converter carrier and samples of copper with platinum obtained from pyrometallurgical method were solved in aqua regia, mixture of aqua regia and fluoric acid.

关键词： Used catalytic converters PGM Platinum Recovery Pyrometallurgy Hydrometallurgy

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