Steam-assisted production of metal silicate cements, compositions and methods thereof
AssigneeSolidia Technologies, Inc.
InventorVahit Atakan
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Abstract
The invention provides a novel, steam-assisted production methodology and associated compositions and methods of use in the manufacture of carbonatable or non-carbonatable metal silicate or metal silicate hydrate (e.g., calcium silicate or calcium silicate hydrate) compositions. These metal silicate compositions and related phases are suitable for use hydraulic, partially hydraulic or non-hydraulic cement that sets and hardens by a hydration process, a carbonation process or a combination thereof, and may be applied in a variety of concrete components in the infrastructure, construction, pavement and landscaping industries.
Claims14
A method for producing calcium and/or magnesium silicate, or calcium and/or magnesium silicate hydrate product capable of carbonation or hydration to form a cementitious product, comprising:
- (a) providing a ground mixture comprising source materials of calcium and/or magnesium oxide and silica;
- (b) providing a gas comprising a steam of water over the ground mixture of source materials at a pressure, wherein the steam of water has a partial pressure that ranges from atmospheric pressure to supercritical water pressure;
- and
- (c) subjecting the ground mixture of source materials to a temperature of from about 400° C. to about 1,200° C. (i) for a time sufficient to calcine the ground mixture, and (ii) for a time sufficient to fuse the calcined ground mixture to form the cementitious product.
Dependencies are inferred from the claim text.