Cementitious reagents, methods of manufacturing and uses thereof
AssigneeTerra Co2 Technology Holdings, Inc.
InventorDonald John Lake
Life of this patent
Estimating the term…
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.
Claims20
A method comprising:
- providing solid particles of an aluminosilicate feedstock;
- blending the solid particles of the aluminosilicate feedstock with a composition adjustment material;
- introducing the solid particles of the aluminosilicate feedstock and the composition adjustment material into a melt chamber;
- heating the solid particles of the aluminosilicate feedstock and the composition adjustment material within the melt chamber to form molten particles;
- and
- cooling the molten particles within a quench chamber to form microspheroidal glassy particles, wherein the microspheroidal glassy particles have a mean roundness (R)>0.7, and a molar composition containing Si and Al and optionally one or more of Fe, Ca, Mg, Na, and K, such that:
- about
- 0.3
- <
- Si
- Si
- +
- Al
- +
- Fe
- +
- Ca
- +
- Mg
- +
- Na
- +
- K
- <
- about
- 0.9
- ;
- and
-
- about
- 0.1
- <
- Al
- Si
- +
- Al
- +
- Fe
- +
- Ca
- +
- Mg
- +
- Na
- +
- K
- <
- about
-
- 0.35
- .
Dependencies are inferred from the claim text.