WO1991008989A1 - Building product - Google Patents
Building product Download PDFInfo
- Publication number
- WO1991008989A1 WO1991008989A1 PCT/GB1990/001966 GB9001966W WO9108989A1 WO 1991008989 A1 WO1991008989 A1 WO 1991008989A1 GB 9001966 W GB9001966 W GB 9001966W WO 9108989 A1 WO9108989 A1 WO 9108989A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- slate
- mixture
- product
- product according
- binder material
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C14/00—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix
- C03C14/004—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix the non-glass component being in the form of particles or flakes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2214/00—Nature of the non-vitreous component
- C03C2214/04—Particles; Flakes
Definitions
- fragments we mean, slivers or chips or fragments, (collectively called “fragments” herein) having a maximum dimension in the range 1 mm to 12 mm and/or powder slate having a maximum dimension of less than 1 mm and more than 0.075 mm and/or dust having a maximum dimension of less than 0.075 mm such that virtually all the slate dust passes through a B.S. sieve No. 200.
- a building product is made by melting recycled bottle glass which comprises a fused mixture of silica, calcium carbonate and sodium carbonate.
- the glass is heated to a temperature of at least 730° C and
- SUBSTITUTESHEET The glass is heated to a temperature of at least 730° C and then particles of slate e.g. slate fragments (as herein defined) and slate powder and slate dust (as herein defined) are stirred into or otherwise mixed with the molten glass.
- slate fragments as herein defined
- slate powder and slate dust as herein defined
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Civil Engineering (AREA)
- Finishing Walls (AREA)
- Vending Machines For Individual Products (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Cereal-Derived Products (AREA)
- Building Environments (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Road Paving Structures (AREA)
Abstract
A building product comprises slate particles e.g. flakes, slivers, chips, fragments, and/or powdered dust particles bonded together by a fused glassy binder.
Description
Title: Building Product
Description of Invention
This invention relates to a building product particularly, but not exclusively, for external use, such as a roofing tile, a flooring slab or a cladding panel.
In previous Patent No. GB 1174304 there is described a product comprising particles of granite embedded in a glassy material provided initially as an alkali metal silicate solution. However, the product reguires a coating to make it impervious.
According to one aspect of the invention we provide a building product comprising slate particles (as herein defined) bonded together by a fused glassy binder.
By "particles" we mean, slivers or chips or fragments, (collectively called "fragments" herein) having a maximum dimension in the range 1 mm to 12 mm and/or powder slate having a maximum dimension of less than 1 mm and more than 0.075 mm and/or dust having a maximum dimension of less than 0.075 mm such that virtually all the slate dust passes through a B.S. sieve No. 200.
The building product may be a roofing slate, a floor slab or a cladding panel for examples.
According to a second aspect of the invention we provide a method of making a building product comprising the steps of mixing binder material and slate particles, heating the mixture sufficiently to cause the binder material at least to melt, and permitting the binder material to set to bond the slate particles together.
The invention will now be described with reference to the following examples.
In a first example, a building product is made by melting recycled bottle glass which comprises a fused mixture of silica, calcium carbonate and sodium carbonate. The glass is heated to a temperature of at least 730° C and
SUBSTITUTESHEET
The glass is heated to a temperature of at least 730° C and then particles of slate e.g. slate fragments (as herein defined) and slate powder and slate dust (as herein defined) are stirred into or otherwise mixed with the molten glass.
A blob of the slate/glass mixture is then placed into a mould to which pressure is then applied by means of a hydraulic press, which pressure assists in removing any voids from the mixture, and forces the mixture to fill the mould. The product may be reinforced with strands of or a grid of glass fibre and/or metal which may be placed in the mould during moulding, or may subsequent to moulding, be bonded to the product. The mixture is then permitted to set.
The mould may be for a single roofing slate although alternatively if desired, the mould may be for a sheet or layer of the mixture which after setting, is then cut into tiles of a required shape and size. Thus the mould may be adapted to facilitate providing lines of weakness between the individual tiles of the sheet or layer of mixture.
If desired, instead of using recycled bottle glass, any other desired recycled or other glass can be used such as flint glass or borosilicate glass for examples. In each case, the glass when set, provides a fused glassy binder.
The building product may be coloured by adding suitable colouring agents to the binder material when molten, to modify or change the colour of the product from the natural colour of the slate.
Alternatively, or additionally, instead of providing the binder material in the form of recycled glass, the binder material may comprise silicates which need to be heated sufficiently at least to fuse to form a glassy binder, or the binder may comprise a mixture of
recycled glass and silicates. In either case, again colouring agents may be added.
A similar method to that described may be used to make a flooring slab or a cladding panel or any other building product as desired. The product thus made may require fabrication or finishing work to achieve an end product when removed from the mould.
In another, preferred example, a building product is made by mixing together a solution or suspension of an alkali metal silicate, such as sodium silicate, and slate particles. Preferably, the suspension includes at least 25% and preferably about 38% by weight, slate particles, in the form of fragments and/or powder and/or dust (as herein defined) .
Sodium silicate solution/suspension is readily commercially available and is sold in a variety which includes 38.1% solids (Crystal 79 sold by Crosfield Chemicals of Cheshire, England) .
Preferably, in the finished, product, the slate particles comprises not less than 50% of the product, by weight, and more preferably between 75% and 90% by weight.
In the present example, a mixture of 75% by weight slate particles (of which 30% by weight comprised powdered slate) and 25% Sodasil 79 is prepared.
The mixture produced is then placed in a moulding box and subjected to pressure to remove voids in the material. Preferably, a pressure in the range 1.544 x 108 NM*2 to 3.86 x 108 NM"2 is exerted although greater pressures can be exerted if required.
The mixture is then dried to remove water, for example by heating at a temperature of less than 100° C for a sustained period e.g. up to about an hour or at least until dry.
When the mixture is dried, the mixture is then fired. It has been found that in the absence of any
colouring agents, by firing the mixture in an inert atmosphere such as nitrogen at a temperature of about 920°C, using slate particles sold under the Trade name "Fullersite" a grey coloured product results, whereas firing the same mixture in an oxygen containing atmosphere at a temperature of about 1050° C, results in a clay brown coloured product.
Thus the colour of the end product can be changed by firing the mixture in different atmospheres. Also, by using slate particles of a different type, different coloured products can be produced.
In each case, the firing temperature is sufficient to fuse the silicates of the mixture so that the slate particles become bonded to rather than just coated with, the glassy binder produced.
The mixture is then permitted to cool.
If required, colouring agents may be added to the mixture prior to placing in the moulding box, in the form of coloured glass, or any metallic oxide colouring.
In each case of the examples described, the resultant building product is suitable for external use i.e. the product is generally impervious to water under natural conditions. It is believed that this imperviousness is achieved by virtue of the shape and nature of the slate particles, to which the binder readily bonds.
The same degree of imperviousness has not been achieved when attempting to make a building product using other types of particles.
Whether or not the binder comprises already fused glass such as bottle glass, which simply requires melting, or silicates in solution/suspension which must be heated sufficiently to promote fusing, or a mixture of these, imperviousness is achieved.
Products having different surface characteristics can be achieved by using different sized slate particles
and fragments, powder and dust in differences proportions. For example, a very smooth product can be produced using predominently slate powder (as herein defined) above, whereas, a product with a rougher surface finish can be made by using a mixture of slate powder and fragments of slate (as herein defined) . It is preferred for at least some slate powder to be used, and slate dust is usually present in a small proportion in slate fragments and powder.
Slate particles of a suitable type are readily commercially available. For example, suitable slate particles are sold by Penrhyn Quarries Limited under the names "Slate Granules" and "Fullersite" powder in various particle sizes, and in both blue and green physical forms, currently for use as an extender or filler with bitumen, and in paints and coatings. Under a 670 magnification of "Fullersite" the slate particles are seen as flaky and angular rather than elongated. Other types of slate particles such as sold under the name "Delafila" by Delabale Slate which are of slightly different shapes, are also suitable.
In each example described, if desired further shaping manufacturing steps may be carried out on the product to provide an end product e.g. holes may be provided in the product by inserts in the mould, or in the product subsequent to firing.
It is envisaged that the method of the invention may be used to manufacture a compound building product comprising a backing material of any desired nature e.g. natural or synthetic stone, faced with a facing comprising slate particles bound together in a glassy binder, to make the product impervious.
The features disclosed in the foregoing description the following claims or the accompanying drawings, expressed in their specific forms or in terms of a means
for performing the disclosed function, or a method or process for attaining the disclosed result, or a class or group of substances or compositions, as appropriate, may, separately or in any combination of such features, be utilised for realising the invention in diverse forms thereof.
Claims
1. A building product comprising slate particles (as herein defined) bonded together by a fused glassy binder.
2. A product according to Claim 1 wherein the slate particles comprise fragments of slate (as herein defined) and/or slate powder (as herein defined) and/or slate dust (as herein defined) .
3. A product according to claim 2 in which at least 25% of the slate particles (by weight) are slate powder and/or dust.
4. A product according to claim 1 wherein the slate particles comprise slate powder and dust (as herein defined) only.
5. A product according to any one of claims 1 to 4 wherein the glassy binder comprises an amorphous mass of fused alkaline earth metal silicates.
6. A product according to any one of the preceding claims wherein the glassy binder comprises an amorphous mass of silicates, borates or phosphates formed by the fusion of sand or other silica or by the fusion of oxides of boron or phosphorous with a flux such as soda or potash and a stabiliser such as lime or alumina.
7. A product according to Claim 6 or Claim 7 wherein the glassy binder includes metallic oxide colouring agents.
8. A product according to any one of the preceding claims wherein the slate particles comprise not less than 50% of the finished building product, by weight.
9. A product according to Claim 8 wherein the slate particles comprise between 75% and 90% of the finished building product by weight.
10. A building product substantially as hereinbefore described.
11. A method of making a building product according to any one of Claims l to 10 comprising the steps of mixing together binder material, and slate particles, heating the mixture sufficiently to cause the binder material at least to melt, and permitting the binder material to set to bond the slate particles together.
12. A method according to Claim 11 wherein the binder material comprises an alkaline metal silicate solution and/or suspension.
13. A method according to Claim 12 wherein the mixture is heated sufficiently to cause the silicates to fuse.
14. A method according to claim 12 or claim 13 wherein the solution or suspension contains between 30% and 40% silicates and incidental solids.
15. A method according to any one of claims 11-14 wherein the slate particle/binder material mixture is placed in a mould prior to heating and is treated in the mould to remove voids.
16. A method according to Claim 15 wherein the mixture is compacted in the mould by exerting a pressure greater than 1.544 x 108 NM*2 on the mixture.
17. A method according to claim 16 wherein the mixtgure is compacted in the mouldby exerting a pressure of greater than 3 . 86 X 108 ^ °" t e mixture.
18. A method according to any one of Claims 12 to 17 wherein the mixture is dried prior to melting the binder material.
19. A method according to any one of Claims 11 to 18 wherein the mixture is heated in an inert atmosphere.
20. A method according to any one of Claim 11 to 18 wherein the mixture is heated in an oxygen containing atmosphere.
21. A method according to any one of Claims 11 to 20 wherein the mixture is heated to a temperature at least 600° C and preferably a temperature of greater than 900° C.
22. A method of making a building product substantially as hereinbefore described.
23. Any novel feature or novel combination of features as herein defined and/or shown in the accompanying drawings.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP91901619A EP0457897B1 (en) | 1989-12-19 | 1990-12-17 | Building product |
DE69009462T DE69009462T2 (en) | 1989-12-19 | 1990-12-17 | BUILDING MATERIAL. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8928643.9 | 1989-12-19 | ||
GB898928643A GB8928643D0 (en) | 1989-12-19 | 1989-12-19 | Particulate material |
GB909017391A GB9017391D0 (en) | 1989-12-19 | 1990-08-08 | Particulate material |
GB9017391.5 | 1990-08-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991008989A1 true WO1991008989A1 (en) | 1991-06-27 |
Family
ID=26296394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1990/001966 WO1991008989A1 (en) | 1989-12-19 | 1990-12-17 | Building product |
Country Status (7)
Country | Link |
---|---|
US (1) | US5244850A (en) |
EP (1) | EP0457897B1 (en) |
AT (1) | ATE106370T1 (en) |
DE (1) | DE69009462T2 (en) |
ES (1) | ES2054487T3 (en) |
GB (1) | GB2244051B (en) |
WO (1) | WO1991008989A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993017978A1 (en) * | 1992-03-09 | 1993-09-16 | Gerhard Melcher | Inorganic masse, coatings produced therefrom, formed bodies and process for producing the same |
WO1998003445A1 (en) * | 1996-07-19 | 1998-01-29 | Cupire Padesa, S.A. | New ceramic material and process for its fabrication, applicable to the production of tiles and the like from slate and residue thereof |
WO1998024735A1 (en) * | 1996-11-30 | 1998-06-11 | Digive Limited | Method of making a product |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GR1001255B (en) * | 1990-10-15 | 1993-06-30 | Glaverbel | Glazed enamel preparations |
SE9201963L (en) * | 1992-06-24 | 1993-11-29 | Techstone Kinna Ab | Disc-shaped stone product, process for its preparation and means thereof |
DE4416489C1 (en) * | 1994-05-10 | 1995-11-23 | Schott Glaswerke | Process for the production of natural stone-like, plate-shaped construction and decoration materials and materials produced therefrom |
US5615523A (en) * | 1995-04-24 | 1997-04-01 | Owens-Corning Fiberglas Technology, Inc. | Roof having resinous shingles |
CA2219026A1 (en) * | 1995-04-24 | 1996-10-31 | Owens Corning | Shingle having ribs and cavity on its underside |
US5711126A (en) * | 1996-05-13 | 1998-01-27 | Owens-Corning Fiberglass Technology, Inc. | Resinous angled shingles for roof ridge lines |
US6340650B1 (en) | 1999-02-02 | 2002-01-22 | Michael Joseph Haun | Ceramic products made from waste glass, raw batch formulations, and method |
CN1269764C (en) * | 2001-06-28 | 2006-08-16 | 迈克尔·J·豪恩 | Method for making product from fiber glass waste |
FR2839509A1 (en) * | 2002-05-10 | 2003-11-14 | Fabrice Kast | SYNTHETIC STONE, MANUFACTURING PROCESS AND INSTALLATION FOR ITS IMPLEMENTATION |
US7014726B2 (en) * | 2002-12-10 | 2006-03-21 | Smartslate, Inc. | Rock laminate |
IL244957A0 (en) * | 2016-04-06 | 2016-07-31 | Igor Neftik | Process for the manufacture of glass-containing slabs and panels of agglomerated stone and glass/glass-ceramic matrix composite materials |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR318808A (en) * | 1902-02-18 | 1902-10-27 | Jurschina | Manufacturing process of artificial stones |
FR519245A (en) * | 1919-06-19 | 1921-06-07 | Gantenbach Ets De | Method of manufacturing a mass which can replace black glass and is suitable as an insulator |
US2956893A (en) * | 1957-10-28 | 1960-10-18 | Int Minerals & Chem Corp | Perlite insulation material |
GB949401A (en) * | 1961-03-16 | 1964-02-12 | Mycalex & T I M Ltd | Improvements in or relating to micaceous insulating materials |
DE2356524A1 (en) * | 1973-11-13 | 1975-05-28 | Claus Wuestefeld | Aq. dispersion of silicates - for bonding rock material and for use as a glaze |
SU1240742A1 (en) * | 1984-12-05 | 1986-06-30 | Белгородский технологический институт строительных материалов им.И.А.Гришманова | Black glass |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52123201A (en) * | 1976-04-08 | 1977-10-17 | Chichibu Cement Kk | Method of producing sound absorbing plate |
JPS5511620A (en) * | 1978-07-10 | 1980-01-26 | Sony Corp | Process circuit for video signal |
DE3606313A1 (en) * | 1986-02-27 | 1987-09-03 | Dynamit Nobel Ag | SEALING MATERIAL FOR FLOOR SEALING |
GB2207913B (en) * | 1987-06-22 | 1991-11-06 | Central Glass Co Ltd | Heat resistant foamed glass |
-
1990
- 1990-12-17 DE DE69009462T patent/DE69009462T2/en not_active Expired - Fee Related
- 1990-12-17 US US07/730,966 patent/US5244850A/en not_active Expired - Lifetime
- 1990-12-17 ES ES91901619T patent/ES2054487T3/en not_active Expired - Lifetime
- 1990-12-17 AT AT91901619T patent/ATE106370T1/en not_active IP Right Cessation
- 1990-12-17 WO PCT/GB1990/001966 patent/WO1991008989A1/en active IP Right Grant
- 1990-12-17 EP EP91901619A patent/EP0457897B1/en not_active Expired - Lifetime
-
1991
- 1991-06-13 GB GB9112761A patent/GB2244051B/en not_active Revoked
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR318808A (en) * | 1902-02-18 | 1902-10-27 | Jurschina | Manufacturing process of artificial stones |
FR519245A (en) * | 1919-06-19 | 1921-06-07 | Gantenbach Ets De | Method of manufacturing a mass which can replace black glass and is suitable as an insulator |
US2956893A (en) * | 1957-10-28 | 1960-10-18 | Int Minerals & Chem Corp | Perlite insulation material |
GB949401A (en) * | 1961-03-16 | 1964-02-12 | Mycalex & T I M Ltd | Improvements in or relating to micaceous insulating materials |
DE2356524A1 (en) * | 1973-11-13 | 1975-05-28 | Claus Wuestefeld | Aq. dispersion of silicates - for bonding rock material and for use as a glaze |
SU1240742A1 (en) * | 1984-12-05 | 1986-06-30 | Белгородский технологический институт строительных материалов им.И.А.Гришманова | Black glass |
Non-Patent Citations (3)
Title |
---|
CHEMICAL ABSTRACTS, vol. 93, no. 20, November 1980 Columbus, Ohio, USA & JP-A-55011620 (DANTO CO. LTD) 26 March 1980 page 286; ref. no. 190889N see abstract * |
WORLD PATENTS INDEX LATEST Accession No 77-83978Y, Week 47 DERWENT PUBLICATIONS LTD, LONDON, GB & JP-A-52123201 (CHICHIBU CEMENT KK) 17-10-77 * |
WORLD PATENTS INDEX LATEST Accession No 87-048971, Week 07 DERWENT PUBLICATIONS LTD, LONDON, GB & SU-A1-1240742 (BELGOROD CONS. MAT.) 30-06-86 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993017978A1 (en) * | 1992-03-09 | 1993-09-16 | Gerhard Melcher | Inorganic masse, coatings produced therefrom, formed bodies and process for producing the same |
WO1998003445A1 (en) * | 1996-07-19 | 1998-01-29 | Cupire Padesa, S.A. | New ceramic material and process for its fabrication, applicable to the production of tiles and the like from slate and residue thereof |
ES2112799A1 (en) * | 1996-07-19 | 1998-04-01 | Cupire Padesa S A | New ceramic material and process for its fabrication, applicable to the production of tiles and the like from slate and residue thereof |
WO1998024735A1 (en) * | 1996-11-30 | 1998-06-11 | Digive Limited | Method of making a product |
US6387319B1 (en) | 1996-11-30 | 2002-05-14 | Digive Limited Of York House | Method of making a product |
US6709627B2 (en) | 1996-11-30 | 2004-03-23 | Digive Limited | Method of making a product |
Also Published As
Publication number | Publication date |
---|---|
GB2244051B (en) | 1993-12-22 |
EP0457897A1 (en) | 1991-11-27 |
EP0457897B1 (en) | 1994-06-01 |
GB2244051A (en) | 1991-11-20 |
ATE106370T1 (en) | 1994-06-15 |
DE69009462T2 (en) | 1994-09-15 |
GB9112761D0 (en) | 1991-08-14 |
DE69009462D1 (en) | 1994-07-07 |
ES2054487T3 (en) | 1994-08-01 |
US5244850A (en) | 1993-09-14 |
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