Method for recycling building materials
AssigneeOwens Corning Fiberglas Technology, Inc.
InventorDavid R. Jones
Life of this patent
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Abstract
A method of recycling building materials is described, including the steps of introducing the building material into a cement kiln, and combusting a combustible portion of the building material as a fuel within the kiln. The noncombustible portion of the building material is incorporated into a clinker material within the kiln.
Claims19
A method of recycling building materials having a combustible portion and a noncombustible portion into a cement material, comprising:
- introducing the building materials into a cement kiln;
- combusting the combustible portion of the building materials as a fuel within the kiln;
- and
- incorporating the noncombustible portion of the building materials into a clinker material within the kiln wherein an organic portion of the building materials is combusted and an inorganic portion of the building materials is incorporated into the clinker material, wherein the building materials comprises a shingle, the recycling process further comprising the steps of:
- combusting an asphalt material from a glass substrate of the shingle;
- and incorporating said substrate into said clinker material as a source of minerals for said cement material.
A method of recycling building materials comprising shingles having a combustible portion and a noncombustible portion into a cement material, comprising:
- introducing the shingles into a cement kiln;
- combusting an asphalt portion of the shingles from a glass substrate of the shingles as a fuel within the kiln;
- and
- incorporating said substrate and a limestone or dolomitic filler material from the asphalt as a source of minerals, including calcium and magnesium from said filler, in said cement material.
A method of recycling building materials comprising a shingle into a cement material, comprising:
- removing the building materials, including the shingle, from a building along with further building materials selected from the group consisting of nails, wood, felt paper, ice shield, and roofing accessories;
- introducing the building materials into a cement kiln;
- combusting an asphalt material from a glass substrate of the shingle as a fuel within the kiln and incorporating said substrate into said clinker material as a source of minerals for said cement material;
- combusting a combustible portion of the further building materials as a fuel within the kiln;
- and
- incorporating the noncombustible portion of the building materials into a clinker material within the kiln, wherein each of said further building materials provides fuel or raw materials for said cement material.
A method of recycling building materials comprising shingles having a combustible portion and a noncombustible portion into a cement material, comprising:
- introducing the shingles into a cement kiln;
- combusting the combustible portion of the shingles as a fuel within the kiln;
- and
- incorporating the noncombustible portion of the shingles into a clinker material within the kiln;
- wherein an organic portion of the shingles is combusted and an inorganic portion of the shingles is incorporated into the clinker material.
A method of recycling building materials comprising shingles having a combustible portion and a noncombustible portion into a cement material, comprising:
- introducing the shingles into a cement kiln;
- combusting the combustible organic portion of the shingles as a fuel within the kiln, wherein the shingles comprise asphalt and wherein the recycling process further comprising the steps of combusting said asphalt and an organic substrate of the shingles;
- and
- incorporating the noncombustible inorganic portion of the shingles into a clinker material within the kiln.
A method of recycling building materials comprising a shingle including a mineral-filled asphalt and a filler material into a cement material, the method comprising:
- introducing the shingle into a cement kiln;
- combusting the asphalt as a fuel within the kiln;
- and
- incorporating the filler material of the asphalt as a source of lime, and a glass mat as a source of silica, into a clinker material within the kiln.
A method of recycling building materials comprising a resinous shingle comprising a filler and having a combustible portion and a noncombustible portion into a cement material, the method comprising:
- introducing the shingle into a cement kiln;
- combusting the resin from a filler material of the shingle as a fuel within the kiln;
- and
- incorporating the filler into said cement material as a source of minerals.
Dependencies are inferred from the claim text.