Separation of PGMs Bearing Alumina Phase from Cordierite in Spent Automobile Catalyst by Thermal Shock

Gangfeng Liu, Ayumu Tokumaru, Shuji Owada

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    Abstract

    Spent automobile catalyst is an important secondary resource of PGMs but the present recycling technologies require high energy-consumption. It is of much important to enrich the PGMs with some energy saving physical separation methods. This catalyst is usually composed of cordierite lattice which is covered by PGMs bearing coat layer. We adopted heating-quenching process as a pre-treatment of subsequent selective grinding and compositional concentration. It was found that micro-cracks were generated in the coat layer and the interface of the two phases and that some part of the coat layer was detached from the cordierite substrate. This paper analyzes the mechanism of these phenomena by using mathematical calculation and FEM simulation.

    Original languageEnglish
    Pages (from-to)28-35
    Number of pages8
    JournalResources Processing
    Volume60
    Issue number1
    DOIs
    Publication statusPublished - 2013

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    Keywords

    • Automobile catalyst
    • FEM
    • Heat transfer
    • PGM
    • Quenching

    ASJC Scopus subject areas

    • Environmental Chemistry
    • Nature and Landscape Conservation
    • Soil Science
    • Pollution

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