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 makes 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 method for producing microspheroidal glassy particles, comprising:
- flowing a gas mixture comprising an oxidant gas and a combustible fuel through a burner;
- preheating and entraining, within a cyclone, solid aluminosilicate feedstock particles in the gas mixture;
- introducing the solid aluminosilicate feedstock particles into a melt chamber, the melt chamber having the burner at a first end;
- introducing quench air into the melt chamber through quench air injectors, the quench air injectors disposed around the burner;
- melting the solid aluminosilicate feedstock particles in the melt chamber while the aluminosilicate feedstock particles are in flight within the melt chamber to form molten aluminosilicate particles;
- and
- quenching, in a quench chamber and while in flight, the molten aluminosilicate particles to form the microspheroidal glassy particles.
A method for producing microspheroidal glassy particles, comprising:
- flowing a gas mixture comprising an oxidant gas and a combustible fuel through a burner;
- entraining, in a cyclone, solid aluminosilicate feedstock particles in the gas mixture;
- preheating the solid aluminosilicate feedstock particles in the gas mixture;
- introducing the solid aluminosilicate feedstock particles into a melt chamber, the melt chamber having the burner;
- introducing quench air into the melt chamber through quench air injectors, the quench air injectors disposed around the burner;
- melting the solid aluminosilicate feedstock particles in the melt chamber while the aluminosilicate feedstock particles are in flight within the melt chamber to form molten aluminosilicate particles;
- and
- quenching, in a quench chamber and while in flight, the molten aluminosilicate particles to form the microspheroidal glassy particles.
Dependencies are inferred from the claim text.