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.

公开(公告)号：US20220009793A1

公开(公告)日：2022-01-13

申请号：US17222264

申请日：2021-04-05

申请人： Hatch Ltd. ,  Northvolt AB

发明人： Robert John FRASER ,  Evangelos STAMATIOU ,  Mark Joseph MACHADO ,  Henry Christian Immo von SCHROETER ,  Mahmood ALEMRAJABI

IPC分类号： C01G53/10 ,  C01G51/10 ,  H01M10/0525 ,  C22B26/12 ,  C22B3/00 ,  C01G45/10 ,  C22B7/00 ,  H01M10/54

摘要： A process for generating a metal sulfate that involves crystallizing a metal sulfate from an aqueous solution to form a crystallized metal sulfate in a mother liquor with uncrystallized metal sulfate remaining in the mother liquor; separating the crystallized metal sulfate from the mother liquor; basifying a portion of the mother liquor to convert the uncrystallized metal sulfate to a basic metal salt; and using the basic metal salt upstream of crystallizing the metal sulfate. So crystallized, the generated metal sulfate may be battery-grade or electroplating-grade.

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.