A　novel　process　of　preparing　cobalt,　tungsten,　and　tungsten　carbide　powders　from　cemented　carbide　scrap　by　molten　salt　electrolysis　has　been　investigated　in　this　paper.　In　this　experiment,　WC-6Co　and　NaCl-KCl　salt　were　used　as　sacrificial　anode　and　electrolyte,　respectively.　The　dissolution　potential　of　cobalt　and　WC　was　determined　by　linear　sweep　voltammetry　to　be　0　and　0.6　V　(vs　Ag/AgCl),　respectively.　Furthermore,　the　electrochemical　behavior　of　cobalt　and　tungsten　ions　was　investigated　by　a　variety　of　electrochemical　techniques.　Results　of　cyclic　voltammetry　(CV)　and　square-wave　voltammetry　show　that　the　cobalt　and　tungsten　ions　existed　as　Co2+　and　W2+　on　melts,　respectively.　The　effect　of　applied　voltage,　electrolysis　current,　and　electrolysis　times　on　the　composition　of　the　product　was　studied.　Results　showed　that　pure　cobalt　powder　can　be　obtained　when　the　electrolysis　potential　is　lower　than　0.6　V　or　during　low　current　and　short　times.　Double-cathode　and　two-stage　electrolysis　was　utilized　for　the　preparation　of　cobalt,　tungsten　carbide,　and　tungsten　powders.　Additionally,　X-ray　diffraction　results　confirm　that　the　product　collected　at　cathodes　1　and　2　is　pure　Co　and　WC,　respectively.　Pure　tungsten　powder　was　obtained　after　electrolysis　of　the　second　part.　Scanning　electron　microscope　results　show　that　the　diameters　of　tungsten,　tungsten　carbide,　and　cobalt　powder　are　smaller　than　100,　200,　and　200　nm,　respectively.　(C)　The　Minerals,　Metals　&　Materials　Society　and　ASM　International　2016