In　this　work,　single-phase　spherical　Nd-Fe-B　regenerated　single　crystals　powder　(SRP)　was　recycled　via　calcium　reduction　method　from　sintered　Nd-Fe-B　(S-NdFeB)　sludge,　followed　by　blending　with　high　remanence　alloy　(HRA)　and　Pr-rich　alloy　at　varying　weight　ratios　from　45　%　to　85　%　for　fabricating　regenerated　magnets　(RM).　We　conducted　a　series　of　analyses　of　phases,　microstructures,　magnetic　performance,　and　magnetization　reversal　behaviors　on　the　RM　samples,　expounding　the　SRP　proportion　impacts　and　the　magnetic　recovery　mechanism.　With　the　increasing　SRP　proportion,　the　comprehensive　magnetic　performance　exhibits　a　trend　of　initially　raising　and　then　decreasing,　reaching　a　summit　for　magnet　RM-65　%.　Br,　(BH)max　and　the　squareness　(Hk/Hcj)　are　well　recovered　to　103.8　%,　104.5　%,　and　102.2　%　of　the　original　magnet,　respectively　due　to　the　high　orientation　induced　by　SRP,　the　high　Br　from　HRA　alloy,　and　uniform　grain　size.　Hcj　is　recovered　to　73.1　%　with　a　satisfying　value　exceeding　15　kOe.　The　introduction　of　Pr-rich　alloy　facilitates　the　formation　of　thin,　continuous　grain　boundaries,　enhancing　the　magnetic　isolation　effect　between　the　main　phase　grains;　on　the　other　hand,　the　Pr-rich-shell　structure　with　high　anisotropic　field,　and　the　chemical　heterogeneity　of　the　multiple　main　phase　grains,　improve　the　nucleation　field　of　the　reversed　domain,　contributing　to　the　high　Hcj　together.　©　2024