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US 8,317,917 B2Granted
Green cement for sustainable construction
AssigneeEmpire Technology Development LLC
InventorThevasahayam Arockiadoss
Life of this patent
Estimating the term…
Abstract
“Green” cements, which can be carbon neutral or negative, can be prepared at lower temperatures (450° C.-500° C.) by utilizing feed compositions comprising (i) TiO2, TaOxNy, TiOxNy, RuO2, Pt, TaO, band gap materials, or a first mixture thereof; (ii) Al2O3; and (iii) Ca2SiO4, MgSiO2, MnSiO2, or a second mixture thereof; and spent wash with melanoidin as a binder.
Claims19
A particulate feed composition for preparing cement clinker comprising
- (i) TiO2, TaOxNy, TiOxNy, RuO2, Pt, TaO, band gap materials, or a first mixture thereof;
- (ii) Al2O3;
- and
- (iii) Ca2SiO4, MgSiO2, MnSiO2, or a second mixture thereof;
- wherein (i), (ii), and (iii) are present in the particulate feed composition in a weight ratio of about 1:4:5, respectively.
2 more elements
A cement clinker comprising about 40 wt % Al2O3, about 30 wt % SiO2, about 10 wt % TiO2 and about 20 wt % spent wash.
Dependencies are inferred from the claim text.