Cementitious reagents, methods of manufacturing and uses thereof
AssigneeTerra Co2 Technology Holdings, Inc.
InventorDonald John Lake
Life of this patent
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Abstract
Described are cementitious reagent materials produced from globally abundant inorganic feedstocks. Also described are methods for the manufacture of such cementitious reagent materials and forming the reagent materials as microspheroidal glassy particles. Also described are apparatuses, systems and methods for the thermochemical production of glassy cementitious reagents with spheroidal morphology. The apparatuses, systems and methods make use of an in-flight melting/quenching technology such that solid particles are flown in suspension, melted in suspension, and then quenched in suspension. The cementitious reagents can be used in concrete to substantially reduce the CO2 emission associated with cement production.
Claims18
A geopolymer cement, comprising:
- a cementitious reagent comprising:
- particles comprising atoms of Si, Al, Fe, Ca, Mg, Na, and K, in which:
- Si
- Si
- +
- Al
- +
- Fe
- +
- (
- Ca
- +
- Mg
- )
- +
- (
- Na
- +
- K
- )
- =
- 0.067
- to
-
- about
- 0.95
- Al
- Si
- +
- Al
- +
- Fe
- +
- (
- Ca
- +
- Mg
- )
- +
- (
- Na
- +
- K
- )
- =
- 0
-
- to
-
- about
- 0.488
- Fe
- Si
- +
- Al
- +
- Fe
- +
- (
- Ca
- +
- Mg
- )
- +
- (
- Na
- +
- K
- )
- =
- 0
-
- to
-
- about
- 0.488
- Ca
- +
- Mg
- Si
- +
- Al
- +
- Fe
- +
- (
- Ca
- +
- Mg
- )
- +
- (
- Na
- +
- K
- )
- =
- 0
-
- to
-
- about
- 0.857
- ,
- and
- Na
- +
- K
- Si
- +
- Al
- +
- Fe
- +
- (
- Ca
- +
- Mg
- )
- +
- (
- Na
- +
- K
- )
- =
- 0.0015
- to
-
- about
- 0.33
- ;
- an ambient cure reagent;
- and
- a hardener.
A geopolymer cement comprising a cementitious reagent comprising non-fly ash microspheroidal glassy particles containing Si, Al, Fe, Ca, Mg, Na, and K, in which:
- 0.067
- <
- Si
- Al
- +
- Fe
- +
- (
- Ca
- +
- Mg
- )
- +
- (
- Na
- +
- K
- )
- <
- 0.95
- ;
- 0
- <
- Al
- Si
- +
- Fe
- +
- (
- Ca
- +
- Mg
- )
- +
- (
- Na
- +
- K
- )
- <
- 0.488
- ;
- 0
- <
- Fe
- Si
- +
- Al
- +
- (
- Ca
- +
- Mg
- )
- +
- (
- Na
- +
- K
- )
- <
- 0.488
- ;
- 0.
- <
- Ca
- +
- Mg
- Si
- +
- Al
- +
- Fe
- +
- (
- Na
- +
- K
- )
- <
- 0.857
- ;
- 0.0015
- <
- Na
- +
- K
- Si
- +
- Al
- +
- Fe
- +
- (
- Ca
- +
- Mg
- )
- <
- 0.33
- ,
- and
- a liquid hardener, wherein the liquid hardener is an alkali-silicate solution where a molar ratio of Me2O/SiO2 is less than 1, wherein Me=(Na or K).
Dependencies are inferred from the claim text.