公开(公告)号：US20190276329A1

公开(公告)日：2019-09-12

申请号：US16302448

申请日：2017-05-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tilman C. Zipplies ,  Klaus Hintzer ,  Monika A. Willert-Porada ,  Achim Schmidt-Rodenkirchen ,  Thomas F. Berger ,  Thorsten Gerdes ,  Christoph Schymura ,  Andreas P. Spiewok

IPC: C01F11/22 ,  C01B9/08 ,  B01D53/68 ,  B01D53/83

Abstract: A process for generating calcium fluoride particles having a particle size (d50) of from about 15 μm to about 300 μm. The process features contacting a gas stream having gaseous hydrogen fluoride (HF) with a fluidized bed of calcium carbonate particles in a fluidized bed reactor.