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.
Claims15
A method of reducing CO2 in cement production, comprising the steps of:
- forming a cementitious reagent, wherein the cementitious reagent:
- (i) is a non-crystalline solid;
- (ii) has a particle distribution with D[3,2] of 20 μm or less;
- (iii) has less than about 10 wt % CaO;
- and
- (iv) is formed by heating an aluminosilicate material to a liquid phase temperature of about 1000-1600° C.;
- and
- adding the cementitious reagent to a binder.
Dependencies are inferred from the claim text.