Back to results
US 2024/0182364 A1Published application
Utilization of spent chromia/alumina catalyst for cement production
AssigneeSabic Global Technologies B.V.
InventorsKhaja Aliuddin SHARIEF, Mohammed Bismillah ANSARI, Venkata Malleswara Rao TADIBOYINA
Life of this patent
Estimating the term…
Abstract
Methods of producing cement using a spent hydrocarbon dehydrogenation catalyst are disclosed. A spent hydrocarbon dehydrogenation catalyst comprising alumina is processed to produce a processed raw material. The processed raw material is then used as a component for producing the cement. Compositions of cement including the processed raw material are disclosed.
Claims15
A method of producing cement, the method comprising:
- processing a spent hydrocarbon dehydrogenation catalyst comprising alumina to produce a processed raw material;
- and
- using the processed raw material as a component for producing the cement.
A composition comprising:
- (a) a raw material comprising chromium and alumina, wherein the raw material is produced via steps comprising:
- grinding a spent hydrocarbon dehydrogenation catalyst comprising chromium supported on alumina to produce a raw meal;
- heating the raw meal at a sintering temperature to produce a clinker;
- cooling the clinker to produce a cooled clinker;
- and
- grinding the cooled clinker to produce the processed raw material;
- (b) a reducing agent configured to reduce Cr6+ in the cement;
- (c) gypsum;
- and
- (d) bauxite.
7 more elements
Dependencies are inferred from the claim text.