公开(公告)号：US20220089879A1

公开(公告)日：2022-03-24

申请号：US17420308

申请日：2020-01-31

Applicant: OMYA INTERNATIONAL AG

Inventor： Daniel E. GERARD ,  Lassi KARVONEN

IPC: C09C1/02 ,  C01B25/32 ,  C09C3/04

Abstract: The present invention relates to a process for producing an aqueous suspension of surface-reacted calcium salt particles by mixing a calcium salt excluding monocalcium phosphate and dicalcium phosphate, a calcium phosphate selected from monocalcium phosphate and/or dicalcium phosphate, with water, and grinding the obtained aqueous suspension at a pH value of at least 4.2 to form an aqueous suspension of surface-reacted calcium salt particles.