公开(公告)号：US20170022107A1

公开(公告)日：2017-01-26

申请号：US15113589

申请日：2015-01-16

Applicant: BASF SE

Inventor： Max SIEBERT ,  Andreas KEMPTER ,  Christoph HESSE ,  Niklas LOGES ,  Rebecca SCHMITT

IPC: C04B22/14 ,  C04B28/16 ,  C04B24/26 ,  C01F11/46

CPC classification number: C04B22/143 ,  C01F11/46 ,  C04B24/2694 ,  C04B28/146 ,  C04B28/16 ,  C04B28/165 ,  C04B40/0042 ,  C04B2103/14 ,  C04B2111/0062 ,  C04B2111/62 ,  C04B2111/72 ,  C04B24/163 ,  C04B24/246 ,  C04B24/2647 ,  C04B24/267 ,  C04B24/2658 ,  C04B22/0086

Abstract: The invention concerns a method for producing pulverulent hardening accelerators by reactive spray drying, where an aqueous phase I comprising calcium ions, and an aqueous phase II comprising sulphate ions, the molar ratio of the calcium ions to the sulphate ions being from 1/5 to 5/1, are contacted at a spray nozzle, and the phases I and II contacted with one another at the spray nozzle are sprayed in a streaming environment of drying gas. Likewise concerned are the pulverulent hardening accelerators producible by the method of the invention, and their use for accelerating the hardening of bassanite and/or anhydrite with formation of gypsum.

Abstract translation: 本发明涉及通过反应性喷雾干燥制备粉末硬化促进剂的方法，其中包含钙离子的水相I和包含硫酸根离子的水相II，钙离子与硫酸根离子的摩尔比为1/5至 5/1在喷嘴处接触，并且在喷雾喷嘴处彼此接触的相I和II在干燥气体的流动环境中喷雾。 同样关心的是通过本发明的方法可生产的粉末硬化促进剂及其用于加速形成石膏的巴生石和/或无水石膏的硬化的用途。