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US 8,869,477 B2Granted
Formed building materials
AssigneeCalera Corporation
InventorsEric Ha, Guillaume Calas, Peng Lu, Chris Camire, William Bourcier, Treavor Kendall, Irvin Chen, Martin Devenney
Life of this patent
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Abstract
Formed building materials comprising a sequestered CO2 are provided. The building materials of the invention include a composition comprising a carbonate/bicarbonate component. Additional aspects of the invention include methods of making and using the formed building materials.
Claims25
A lightweight construction panel, comprising:
- at least 50% w/w sequestered-CO2 component, wherein the sequestered-CO2 component comprises metastable carbonate selected from the group consisting of vaterite, aragonite, and combination thereof, wherein the sequestered-CO2 component has a δ13 C less than -15%, and wherein the lightweight construction panel has a porosity of at least 30%.
A method for producing a construction panel, comprising:
- a) processing a waste gas stream comprising carbon dioxide with a process water to produce a composition wherein the composition comprises a metastable carbonate comprising vaterite, wherein the vaterite has a δ13 C less than -15%;
- b) producing a slurry mixture from the composition;
- and
- c) processing the slurry mixture to form a lightweight construction panel wherein the construction panel comprises at least 50% w/w aragonite and has a porosity of between 30-90%.
1 more element
Dependencies are inferred from the claim text.