文章根据W—C—Co系及Co—Zn系相图,阐述了锌熔法能使以钴为胶结剂的废硬质合金解体回收的理论依据。介绍了小型试验、扩大试验的设备及实验结果。证明内热式锌熔炉和收锌装置设计组装在一起,是一种创造,使用效果良好。该装置易于放大成工业规模的生产炉型,为用锌熔法处理回收废硬质合金提供了可靠的实验依据。 According to the W-C-Co system and the Co-Zn phase diagram, the article expounds the theoretical basis for the zinc-melt method to disintegrate the scrap cemented carbide with cobalt as the binder. Introduced a small test, expand the test equipment and experimental results. Proved that the internal heat type zinc furnace and zinc device design together, is a creation, the use of good results. The device is easy to enlarge into an industrial-scale production furnace and provides a reliable experimental basis for the recycling of waste cemented carbide by using zinc melting method.