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废旧硬质合金短流程回收工艺特点及优化

Characteristics and optimization on the short recycling process of scrap cemented carbide

  • 摘要: 短流程回收工艺由于流程短、回收率高、经济节能等特点被广泛应用于废旧硬质合金的回收中。本文针对回收原理、工艺流程、影响因素等方面综述了电溶法、锌熔法、氧化–还原法、高温处理法、机械破碎法等短流程回收工艺, 着重探讨了不同工艺的优缺点。结合各回收工艺特点, 指出目前废旧硬质合金的回收应放在改进、延伸原有工艺或多种工艺相结合上, 实现不同工艺的优势互补, 优化现有回收技术。

     

    Abstract: In the recovery technology of scrap cemented carbide, short process technologies are widely applied, due to the shorter process, higher recovery rate, lower energy consumption, and greater economic value. In this paper, recovery principle, technological process, and influencing factors of short recycling process of scrap cemented carbide were reviewed, including electrochemical method, zinc melting method, oxidation-reduction method, heat treatment method, and mechanical disruption process. The characteristics of different process were emphatically discussed. According to the characteristics of recycling process, the improvement of original process or the combination of multi-technology should be done to optimize the recovery technology of scrap cemented carbide, making the respective advantages complementary to each other.

     

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