The　waste　Nd-Fe-B　sintered　magnets　up　to　500　kg　per　batch　were　recycled　to　manufacture　anisotropic　sintered　magnets　by　combination　of　hydrogen　decrepitation　(HD)　and　alloying　technique.　Magnetic　properties　and　thermal　stability　of　both　the　waste　magnets　and　recycled　magnets　were　investigated.　The　recycled　magnet　exhibits　magnetic　properties　with　remanence　(B-r)　of　12.38　kGs,　coercivity　(H-ci)　of　24.89　kOe,　and　maximum　energy　product　[(BH)(max)]　of　36.51　MGOe,　respectively,　which　restores　99.20%　of　B-r,　105.65%　of　H-ci,　and　98.65%　of　(BH)(max)　of　the　waste　magnets,　respectively.　The　volume　fraction　of　Nd-rich　phase　in　the　recycled　magnets　is　about　10.1　vol.%,　which　is　bigger　than　that　of　the　waste　magnets　due　to　the　additive　of　Nd3PrFe14B　alloy　containing　more　rare　earth.　The　remanence　temperature　coefficient　(alpha)　and　coercivity　temperature　coefficient　(beta)　of　the　recycled　magnets　are　-0.1155%/K　and　-0.5099%/K　in　the　range　of　288-423　K,　respectively,　which　are　comparative　to　those　of　the　waste　magnets.　(C)　2015　Elsevier　B.V.　All　rights　reserved.