公开(公告)号：US20220149452A1

公开(公告)日：2022-05-12

申请号：US17601865

申请日：2020-04-14

申请人： Northvolt AB

发明人： Mahmood ALEMRAJABI ,  Ingrid KARLSSON ,  Ragnar SJÖDAHL ,  Emma NEHRENHEIM ,  Martina PETRANIKOVA ,  Cristian TUNSU

IPC分类号： H01M10/54 ,  C22B3/06 ,  C22B15/00 ,  C22B3/00 ,  C22B47/00 ,  C22B26/12 ,  C22B3/44 ,  C22B7/00

摘要： A process for removal of aluminium and iron in the recycling of rechargeable batteries comprising providing a leachate from black mass, adding phosphoric acid (H3PO4) to said leachate and adjusting the pH to form iron phosphate (FePO4) and aluminium phosphate (AlPO4), precipitating and removing the formed FePO4 and AlPO4, and forming a filtrate for further recovery of cathode metals, mainly NMC-metals and lithium.

公开(公告)号：US20230042034A1

公开(公告)日：2023-02-09

申请号：US17967424

申请日：2022-10-17

申请人： Northvolt AB

发明人： Mahmood ALEMRAJABI ,  Ingrid KARLSSON ,  Ragnar SJÖDAHL ,  Emma NEHRENHEIM ,  Martina PETRANIKOVA ,  Cristian TUNSU

IPC分类号： H01M10/54 ,  C22B3/06 ,  C22B3/00 ,  C22B7/00 ,  C22B3/44 ,  C22B47/00 ,  C22B26/12 ,  C22B15/00

摘要： A process for removal of aluminium and iron in the recycling of rechargeable batteries comprising providing a leachate from black mass, adding phosphoric acid (H3PO4) to said leachate and adjusting the pH to form iron phosphate (FePO4) and aluminium phosphate (AlPO4), precipitating and removing the formed FePO4 and AlPO4, and forming a filtrate for further recovery of cathode metals, mainly NMC-metals and lithium.