Solids produced from ash and process for producing the same
AssigneeWood Waste Energy, Inc.
InventorsGreg M. Smith, Vahid Sendijarevic, Daniel Klempner, Kurt C. Frisch
Life of this patent
Estimating the term…
Abstract
A compressed solid produced from a feed mixture of bottom ash and a binder. The feed mixture includes about 80% to 95% by weight bottom ash, or at least about 50% by weight bottom ash in combination with other waste materials, in combination with a polyisocyanate-based binder.
Claims18
A compressed solid produced from a feed mixture comprising a binder and from about 50% to about 95% by weight bottom ash resulting from burning wood, said bottom ash having a density of greater than about 60 lbs/ft3, and from about 5% to about 20% binder, wherein the solid has a compressive strength of at least about 1000 psi and a flexural strength of at least about 500 psi.
A compressed solid for use as a building block, landscaping block or walkway stone produced by pressing and drying a feed mixture comprising from about 80% to about 95% by weight bottom ash having a density of greater than about 60 lbs/ft3 resulting from burning wood and from about 5% to about 20% binder;
- wherein the compressed solid has a compressive strength in the range of from about 1000 psi to about 10,000 psi and a flexural strength of at least about 500 psi;
- wherein the bottom ash contains about 5-15% by weight water;
- and
- wherein the binder is selected from the group consisting of an isocyanate-based binder and an isocyanate-based binder in mixture with a polyol.
A compressed solid for use as a building block, landscaping block or walkway stone produced by pressing and drying a feed mixture comprising at least about 50% by weight of a first filler material consisting of wood burning bottom ash having a density of greater than about 60 lbs/ft3 and from about 5% to about 45% by weight of a second filler material;
- wherein the compressed solid has a compressive strength in the range of about from about 1000 psi to about 10,000 psi and a flexural strength of at least about 500 psi;
- wherein the bottom ash contains from about 5% to about 15% water;
- and
- wherein the binder is selected from the group consisting of an isocyanate-based binder and an isocyanate-based binder in mixture with a polyol.
A process for producing a compressed solid from filler material comprising bottom ash, the process comprising:
- mixing filler material comprising at least about 50% bottom ash resulting from burning wood said bottom ash having a density of greater than about 60 lbs/ft3, with a binder to form a feed mixture material of bottom ash and binder in intimate admixture;
- and
- pressing the feed mixture material into a solid shape suitable for use as a building block, landscaping block, or walkway stone wherein the solid has a compressive strength of at least about 1000 psi and a flexural strength of at least about 500 psi.
Dependencies are inferred from the claim text.