WC-Co　nanoparticles　were　directly　recycled　via　sodiothermic　reduction　in　NaCl-52mol%CaCl2　molten　salts　using　oxidized　hard　metal　scrap　as　the　raw　materials.　The　as-prepared　samples　were　characterized　by　X-ray　diffraction　(XRD)　and　scanning　electron　microscopy　(SEM).　It　was　found　that　a　series　of　cemented　carbide,　such　as　W,　W-Co,　WC　and　WC-Co　nanoparticles,　were　successfully　recycled　using　the　molten　salt　systems.　The　results　show　that　WC/WC-Co　nanoparticles　can　be　recycled　form　oxidized　hard　metal　scrap　via　sodiothermic　reduction　in　the　NaCl-52mol%CaCl2　molten　salts.　©　2016　by　The　Minerals,　Metals　&　Materials　Society.