Methods for processing incinerator bottom ash
AssigneeRecycle8 Ltd.
InventorIan Skene
Life of this patent
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Abstract
A method for processing incinerator bottom ash (IBA) comprises the steps of carbonating IBA aggregate material by CO2 sequestration and providing a stabilizing additive for mixing with the carbonated IBA aggregate material, wherein the additive comprises one or more components from group (b1) and one or more components from group (b2), wherein group (b1) consists of aluminium chloride and at least one other metal chloride, and wherein group (b2) consists of silica, zeolite and apatite. When the carbonated IBA and additive is mixed a stabilized IBA composition is formed, the stabilized IBA composition being suitable for use as a substitute for traditional aggregates in the manufacture of concrete and concrete products.
Claims22
A method for processing incinerator bottom ash (IBA) aggregate material comprising the steps of:
- (i) carbonating IBA aggregate material by CO2 sequestration;
- and
- (ii) adding a stabilizing additive to, and mixing the stabilizing additive with, the carbonated IBA aggregate material to form a stabilized IBA composition, wherein the stabilizing additive comprises one or more components from group (b1) and one or more components from group (b2), wherein group (b1) consists of aluminium chloride and at least one other metal chloride, and wherein group (b2) consists of silica, zeolite and apatite.
A binder composition comprising:
- cement;
- and
- a stabilised carbonated IBA aggregate material comprising:
- a carbonated IBA aggregate material;
- and
- a stabilizing additive mixed with the carbonated IBA aggregate material, wherein the stabilizing additive comprises one or more components from group (b1) and one or more components from group (b2), wherein group (b1) consists of aluminium chloride and at least one other metal chloride, and wherein group (b2) consists of silica, zeolite and apatite.
A construction composition comprising:
- a binder composition, comprising:
- a carbonated IBA aggregate material;
- a stabilizing additive mixed with the carbonated IBA aggregate material, wherein the stabilizing additive comprises one or more components from group (b1) and one or more components from group (b2), wherein group (b1) consists of aluminium chloride and at least one other metal chloride, and wherein group (b2) consists of silica, zeolite and apatite;
- and
- cement;
- and
- an additional aggregate component.
Dependencies are inferred from the claim text.