US 12,116,323 B2
Method for manufacturing a hydraulic binder
Hervé Fryda, Meyrie (FR); Ratana Soth, Lyons (FR); Rose-Marie Mineau, Valencin (FR); and Eric Larnaudie, Bourgoin-Jallieu (FR)
Assigned to IMERTECH, Paris (FR)
Appl. No. 17/290,215
Filed by IMERTECH, Paris (FR)
PCT Filed Oct. 30, 2019, PCT No. PCT/FR2019/052582
§ 371(c)(1), (2) Date Apr. 29, 2021,
PCT Pub. No. WO2020/089564, PCT Pub. Date May 7, 2020.
Claims priority of application No. 1860094 (FR), filed on Oct. 31, 2018.
Prior Publication US 2022/0017414 A1, Jan. 20, 2022
Int. Cl. C04B 7/32 (2006.01); B01J 23/02 (2006.01); C01F 7/164 (2022.01); C04B 7/44 (2006.01); C04B 28/06 (2006.01); C04B 111/00 (2006.01)
CPC C04B 7/32 (2013.01) [B01J 23/02 (2013.01); C01F 7/164 (2013.01); C04B 7/44 (2013.01); C04B 28/06 (2013.01); C04B 2111/0081 (2013.01); C04B 2111/0087 (2013.01)] 19 Claims
 
1. A hydraulic binder manufacturing method for manufacturing a hydraulic binder comprising a calcium aluminate, the method including the following steps:
a) providing a composition comprising a lime source compound and an alumina source compound, the said composition comprising a maximum of 95% lime and alumina, and a minimum of 23% alumina, by mass relative to the total mass of dry matter of the composition;
b) placing the composition provided in step a) in a moisture-saturated environment (medium), at a hydration temperature comprised between 40° C. and 150° C., so as to precipitate the hydrated phases comprising at least one aluminium oxide combined with a calcium oxide and with water;
c) subjecting the precipitates obtained in step b) to a firing temperature comprised between 200° C. and 1300° C., keeping them thereat for at least 15 minutes,
wherein in step a), the composition is in the form of a set of particles whereof the particle size distribution is defined by a reference diameter d80 that is less than or equal to 100 micrometers.