CA1243691A - Refractory thermoinsulating mass - Google Patents
Refractory thermoinsulating massInfo
- Publication number
- CA1243691A CA1243691A CA000480540A CA480540A CA1243691A CA 1243691 A CA1243691 A CA 1243691A CA 000480540 A CA000480540 A CA 000480540A CA 480540 A CA480540 A CA 480540A CA 1243691 A CA1243691 A CA 1243691A
- Authority
- CA
- Canada
- Prior art keywords
- mixture
- refractory
- thermoinsulating
- parts
- mass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/0675—Vegetable refuse; Cellulosic materials, e.g. wood chips, cork, peat, paper
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Ceramic Products (AREA)
- Fireproofing Substances (AREA)
- Building Environments (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
A thermoinsulating mass comprises from 20 to 50 parts by weight of refractory clay and/or kaolin, from 5 to 30 parts by weight of liquid or solid water-soluble inorganic bond, from 5 to 50 parts by weight of water and from 50 to 180 parts by volume per 100 parts by volume in relation to the remaining mixture, of a burning out substance imbibed with liquid inorganic bond. The burning out substance may be husks of rice, wheat, oats, rye, barley, saw-dust, cellulose pulp or a mixture of any of these. The inorganic bond is a mix-ture of acid metal phosphates or of metal sulphates and phosphates or an organosilicate compound. The ad-vantages of this thermoinsulating refractory mass are the combination of high refractoriness, resp. high working temperature and low thermic conductivity as well as the use of cheap and largely available raw-materials.
The thermoinsulating mass is used for insulation of thermic aggregates.
A thermoinsulating mass comprises from 20 to 50 parts by weight of refractory clay and/or kaolin, from 5 to 30 parts by weight of liquid or solid water-soluble inorganic bond, from 5 to 50 parts by weight of water and from 50 to 180 parts by volume per 100 parts by volume in relation to the remaining mixture, of a burning out substance imbibed with liquid inorganic bond. The burning out substance may be husks of rice, wheat, oats, rye, barley, saw-dust, cellulose pulp or a mixture of any of these. The inorganic bond is a mix-ture of acid metal phosphates or of metal sulphates and phosphates or an organosilicate compound. The ad-vantages of this thermoinsulating refractory mass are the combination of high refractoriness, resp. high working temperature and low thermic conductivity as well as the use of cheap and largely available raw-materials.
The thermoinsulating mass is used for insulation of thermic aggregates.
Description
65367 ~ Z~ 3 r ~HERMOINSULATING REFRACTORY MASS
ThiQ invention relates to a thermoin~ulatlng mas~ used for thermic lnsulation of heating aggregates~
Thermoinsulating refractory masse~ are known representing mixture~ of natural ceramic raw-materials,oxides,and light. fil-ler~.Their refractoriness depends on the chemical composition of the initial components in the mas~ while the low thermocon-ductlvity i~ d~termined by the foaming agents contained therein.
It i~ known that the porosity of thermoinsulating refractory maQ8e9 i8 obtained ~6 a re~ult of adding to their content of diatomite,foamed vermiculi~e or perlite,pellets of preliminary~ ~ :
.
burned and foamed ceramic ma~ses or burnlng out organic addi-~tive~/1,2/.
A d~sadvant ge of the known thermoin~ulat1ng mas~e.s con~-:
taining vermicullte or diatomlte ;i~ their limited refractori~
ness.~he operational temperature up to which they can be u~ed . :: . : .". .
' ~ L3~
does not ~urpa~s 1100C /2/.
A draw-back of the known high refractory thermoinsulating mass i9 its high thermic conductivity /1/.
The object of -thls invention is to provide a thermoin~ulating refractory mass having simultaneou~ly a high refractoriness,resp.
a high working temperature and a low thermic conduc~ivity.
This object is achieved by ~ynthesizing a thermoinsulating re-fractory mass comprising refractory clay and/or kaolin in amount 30 to 50 weight parts,liquid or solid water-soluble inorganic bond in amount 5 to ~0 weight parts,water from 5 to 50 weight parts and a burning out organic sub~tance pxeviously imbibed with liquid inorganic bond i~ amount 50 to 180 volume parts per ~00 parts in relation to the remaining mixture.
As burning out organic substances can be used husks o~ rice, wheat,oats,barley or rye,saw~dusts or cellulo~e pulp or a mixture of these substances.
The solid or liquid water-soluble inorganic bond is a mixture of acid metal phosphates of the type of aluminium,chromium or mag-nesium phosphate or aluminium sulphate or a mixture of metal phos-phates and sulphates or an organosilicate compound of the type of ethylsilicate or alkaline metasilicate.
In order to broaden the range of the synthesized thermoinsula-ting refractory masses and their field~ of applicatlon and use,the refractory clay and/or kaolin comprised in the refractory mass are replaced by fine-grained refractory inactive filler of the type o~
alumlna,alumosilicate chamotte~mulite chamotte9silica,chromic oxi-de,magnesium oxide,magnesium silicate,zirconium silicate or a mix~
ture of the same substances,taken in an amount up to 50~r ~he raw ma8s is used for insulating thermic aggregate~ by :, ... .
3 - ~.2~36~
casting or ramming by converting it from a raw mass in a ther-moin~ulating refractory mass under the actlon of heat emitted by the thermic aggregate.As a result the burning out organic substance soaked with inorganic bond that is contained in the mass is carbonized and burns out partially without lo~ing 1~B
form thus converting in pores with microcellular ~tructureO
~ he thermoinsulating refractory mas~ can be u~ed for for-mlng furnace walls,blocks or bricks by casting in special moulds or casings and ~etting at a~bient temperature by means of addi-tives accelerating the setting.In this case the burning of the ~ass can be carried out or under the action of heat of the ther-mic aggregate or by thermic treatment in an industrial furnace.
The thermoinsulating mass can be dried up to a residual hu-midity 5-15% and then formed by pressing while the products thus obtained are submitted to burning in an industria~ furnace.
The ad~antages of the thermoinsulating refractory ma~3 ac-cording to the invention are the following:a simultaneous com-bining of high refractoriness,respectively high ~orking tempera-ture and low thermoconductivity,possibility for varying these parameter~ in broad ranges~use of cheap and largely available raw-materials.All the~e favourable factors en~ure a broad and versatile application of the refractory ma~s for insulating va-riou~ type6 of thermic aggregates as wéll as po3~ibilitie~ for using the mass in the form of a raw mixture and as refractory products.
~ he ob~ect o~ the invention i9 lllustrated a~d explained in detail by the following examples of use:
i A mixture of following component~ i~ prepared:
refractory clay 20 weight parts 3~
kaoli~ 10 weight parts alumina 20 weight parts alumopho~phatlc bond 20 weight parts water 30 weight parts To 100 volumic parts of this mixture are added 150 volumlc parts rice husks previously imbibed with alumophosphatlc bond, then the mixture i9 homogenized in a mixer.The obtained plastlc mass is applied i~ its raw form by ramming or casting on the fur-nace roofs or by means o~' casings - on the vertical walls.Under the action of the heat of the thermic aggregate is obtained the thermoin~ulating refractory material with volume mas6 600 kg/m3, thermic conducti~ity at 20C ~ 0,12 Bt/mX and maximal working temperature - 1500C.
Examvle 2 ~he same as example 1 with the only dtfference that instead of rice husks are used wheat husks.
Example ~
The same as example 1 with the only difference that instead of rice husks are used oats husks.
E~ample 4 ~he same a~ example 1 with the only difference that instead of rice husks are used equal parts of rice, rye and barley hu~ks.
ample 5 A mixture of following components i~ prepared:
Refractory clay . 15 weight parts kaolln 15 weight part~
solution of sodium metasilicate with ~olumic mass 1,7 g/cm3 30 weight parts ~ilica 20 weight parts water 20 weight parts , , .
, , ' ~ -' :
.~ ~ . --5 - :~.2~3~
To 100 volume parts of this mixture are added 140 volu~e parts saw-dust~,prealabl~ imblbed with aluminium sulphate.The thus obtained plastic mas~ is u~ed in raw condition in apply-ing it by ra~ming on the refractory brickwork of indu~trial furnaces.The thermoinsulating mass is burned under the actlon of heat of the furnace and ha~ ~ volume ma~s 550 kg/cm~ and thermic conductlvity at 2CJC - 0,10 Bt/mK.
Example 6 As example 5 with the only difference that instead of saw-dusts is used a mixture of equal parts rice husks,saw-dusts and cellulose pulp.
Example 7 A mixture of following components is prepared:
kaolin ~0 weight parts alumosilicate chamotte 20 weight parts alumo-chromo-~hosphatic bond ~C weight ~arts water 20 wei~ht parts To 100 volume parts of this mixture are added 12~ volume parts saw-dusts prealabl~ imbibed with alu~opho~phatic bond and the mixture is homo~enized~Immediately before the use are added to 95 weight parts of the mixture 5 weight parts alumi-na cement.The new formed mixture is formed in a wood or metal mould or in a metal casing and is allowed to set at ambient te~-perature duri~g 1-2 twenty-four hour~he blocks obtained pO9-ses~ a sufficient mechanical strength and are ready for use in lining furnace wall~.The blocks are burned by thc heat of the thermic aggregate.Thih thermoinsulating and refractory mass i~
suitable for insulating walls of stacks and other parts o~ in-dustrlal ~urnaces.Its maximal working te-perature is 1350C.
. ~
6 ~ 36~
Exam~le 8 A mixture of following components i.~ prepared:
refractory clay 10 welght part~
silica 20 weight parte kaolin tO welght parts ethylsilicate 20 weight parts water 30 welght part 9 To 100 volume parts of this mixture are added 150 ~olume parts rice husks prealably imbibed with alumophosphatic bond~
The thus obtained plast;ic mass is applied in raw condition by ramming on the roofs of the furnaces or by means of casings -on the vertical walls.Under the action of heat of the thermic aggregate is obtained the thermoinsulating refractory material with volume mass 550 kg/m3,ther~ic conductivity at 20C-0,11 ~T/m~ and maximal working temperature 1400C~
~e~
The mixture described in example 1 is dried to a residue hu-midity 10% and then it is pressed in the form of bricks which are submitted to drying and high-temperature burning.~he ready for use bricks have a volume mass 600 kg~m3,compressive strength 5 MPa,coefficient of thermic conductiYity at 20C-0,12~t/mK and they are intended for a working temperature of 1500C.
RE~ERENCES
/1/Refractorie~ and their u~eDtranslated from Japanesep Moæoow,1984,p.2~8-304 : ; :
/2/High temperature insulation9Interceram Nr.4,1979,p.4i6-420 ' . .
ThiQ invention relates to a thermoin~ulatlng mas~ used for thermic lnsulation of heating aggregates~
Thermoinsulating refractory masse~ are known representing mixture~ of natural ceramic raw-materials,oxides,and light. fil-ler~.Their refractoriness depends on the chemical composition of the initial components in the mas~ while the low thermocon-ductlvity i~ d~termined by the foaming agents contained therein.
It i~ known that the porosity of thermoinsulating refractory maQ8e9 i8 obtained ~6 a re~ult of adding to their content of diatomite,foamed vermiculi~e or perlite,pellets of preliminary~ ~ :
.
burned and foamed ceramic ma~ses or burnlng out organic addi-~tive~/1,2/.
A d~sadvant ge of the known thermoin~ulat1ng mas~e.s con~-:
taining vermicullte or diatomlte ;i~ their limited refractori~
ness.~he operational temperature up to which they can be u~ed . :: . : .". .
' ~ L3~
does not ~urpa~s 1100C /2/.
A draw-back of the known high refractory thermoinsulating mass i9 its high thermic conductivity /1/.
The object of -thls invention is to provide a thermoin~ulating refractory mass having simultaneou~ly a high refractoriness,resp.
a high working temperature and a low thermic conduc~ivity.
This object is achieved by ~ynthesizing a thermoinsulating re-fractory mass comprising refractory clay and/or kaolin in amount 30 to 50 weight parts,liquid or solid water-soluble inorganic bond in amount 5 to ~0 weight parts,water from 5 to 50 weight parts and a burning out organic sub~tance pxeviously imbibed with liquid inorganic bond i~ amount 50 to 180 volume parts per ~00 parts in relation to the remaining mixture.
As burning out organic substances can be used husks o~ rice, wheat,oats,barley or rye,saw~dusts or cellulo~e pulp or a mixture of these substances.
The solid or liquid water-soluble inorganic bond is a mixture of acid metal phosphates of the type of aluminium,chromium or mag-nesium phosphate or aluminium sulphate or a mixture of metal phos-phates and sulphates or an organosilicate compound of the type of ethylsilicate or alkaline metasilicate.
In order to broaden the range of the synthesized thermoinsula-ting refractory masses and their field~ of applicatlon and use,the refractory clay and/or kaolin comprised in the refractory mass are replaced by fine-grained refractory inactive filler of the type o~
alumlna,alumosilicate chamotte~mulite chamotte9silica,chromic oxi-de,magnesium oxide,magnesium silicate,zirconium silicate or a mix~
ture of the same substances,taken in an amount up to 50~r ~he raw ma8s is used for insulating thermic aggregate~ by :, ... .
3 - ~.2~36~
casting or ramming by converting it from a raw mass in a ther-moin~ulating refractory mass under the actlon of heat emitted by the thermic aggregate.As a result the burning out organic substance soaked with inorganic bond that is contained in the mass is carbonized and burns out partially without lo~ing 1~B
form thus converting in pores with microcellular ~tructureO
~ he thermoinsulating refractory mas~ can be u~ed for for-mlng furnace walls,blocks or bricks by casting in special moulds or casings and ~etting at a~bient temperature by means of addi-tives accelerating the setting.In this case the burning of the ~ass can be carried out or under the action of heat of the ther-mic aggregate or by thermic treatment in an industrial furnace.
The thermoinsulating mass can be dried up to a residual hu-midity 5-15% and then formed by pressing while the products thus obtained are submitted to burning in an industria~ furnace.
The ad~antages of the thermoinsulating refractory ma~3 ac-cording to the invention are the following:a simultaneous com-bining of high refractoriness,respectively high ~orking tempera-ture and low thermoconductivity,possibility for varying these parameter~ in broad ranges~use of cheap and largely available raw-materials.All the~e favourable factors en~ure a broad and versatile application of the refractory ma~s for insulating va-riou~ type6 of thermic aggregates as wéll as po3~ibilitie~ for using the mass in the form of a raw mixture and as refractory products.
~ he ob~ect o~ the invention i9 lllustrated a~d explained in detail by the following examples of use:
i A mixture of following component~ i~ prepared:
refractory clay 20 weight parts 3~
kaoli~ 10 weight parts alumina 20 weight parts alumopho~phatlc bond 20 weight parts water 30 weight parts To 100 volumic parts of this mixture are added 150 volumlc parts rice husks previously imbibed with alumophosphatlc bond, then the mixture i9 homogenized in a mixer.The obtained plastlc mass is applied i~ its raw form by ramming or casting on the fur-nace roofs or by means o~' casings - on the vertical walls.Under the action of the heat of the thermic aggregate is obtained the thermoin~ulating refractory material with volume mas6 600 kg/m3, thermic conducti~ity at 20C ~ 0,12 Bt/mX and maximal working temperature - 1500C.
Examvle 2 ~he same as example 1 with the only dtfference that instead of rice husks are used wheat husks.
Example ~
The same as example 1 with the only difference that instead of rice husks are used oats husks.
E~ample 4 ~he same a~ example 1 with the only difference that instead of rice husks are used equal parts of rice, rye and barley hu~ks.
ample 5 A mixture of following components i~ prepared:
Refractory clay . 15 weight parts kaolln 15 weight part~
solution of sodium metasilicate with ~olumic mass 1,7 g/cm3 30 weight parts ~ilica 20 weight parts water 20 weight parts , , .
, , ' ~ -' :
.~ ~ . --5 - :~.2~3~
To 100 volume parts of this mixture are added 140 volu~e parts saw-dust~,prealabl~ imblbed with aluminium sulphate.The thus obtained plastic mas~ is u~ed in raw condition in apply-ing it by ra~ming on the refractory brickwork of indu~trial furnaces.The thermoinsulating mass is burned under the actlon of heat of the furnace and ha~ ~ volume ma~s 550 kg/cm~ and thermic conductlvity at 2CJC - 0,10 Bt/mK.
Example 6 As example 5 with the only difference that instead of saw-dusts is used a mixture of equal parts rice husks,saw-dusts and cellulose pulp.
Example 7 A mixture of following components is prepared:
kaolin ~0 weight parts alumosilicate chamotte 20 weight parts alumo-chromo-~hosphatic bond ~C weight ~arts water 20 wei~ht parts To 100 volume parts of this mixture are added 12~ volume parts saw-dusts prealabl~ imbibed with alu~opho~phatic bond and the mixture is homo~enized~Immediately before the use are added to 95 weight parts of the mixture 5 weight parts alumi-na cement.The new formed mixture is formed in a wood or metal mould or in a metal casing and is allowed to set at ambient te~-perature duri~g 1-2 twenty-four hour~he blocks obtained pO9-ses~ a sufficient mechanical strength and are ready for use in lining furnace wall~.The blocks are burned by thc heat of the thermic aggregate.Thih thermoinsulating and refractory mass i~
suitable for insulating walls of stacks and other parts o~ in-dustrlal ~urnaces.Its maximal working te-perature is 1350C.
. ~
6 ~ 36~
Exam~le 8 A mixture of following components i.~ prepared:
refractory clay 10 welght part~
silica 20 weight parte kaolin tO welght parts ethylsilicate 20 weight parts water 30 welght part 9 To 100 volume parts of this mixture are added 150 ~olume parts rice husks prealably imbibed with alumophosphatic bond~
The thus obtained plast;ic mass is applied in raw condition by ramming on the roofs of the furnaces or by means of casings -on the vertical walls.Under the action of heat of the thermic aggregate is obtained the thermoinsulating refractory material with volume mass 550 kg/m3,ther~ic conductivity at 20C-0,11 ~T/m~ and maximal working temperature 1400C~
~e~
The mixture described in example 1 is dried to a residue hu-midity 10% and then it is pressed in the form of bricks which are submitted to drying and high-temperature burning.~he ready for use bricks have a volume mass 600 kg~m3,compressive strength 5 MPa,coefficient of thermic conductiYity at 20C-0,12~t/mK and they are intended for a working temperature of 1500C.
RE~ERENCES
/1/Refractorie~ and their u~eDtranslated from Japanesep Moæoow,1984,p.2~8-304 : ; :
/2/High temperature insulation9Interceram Nr.4,1979,p.4i6-420 ' . .
Claims (4)
1.Thermoinsulating mass based upon a mixture of inorganic substances and foaming agents, characterized in that it consists of refractory clay and/or kaolin in an amount of 20 to 50 weight parts, liquid or solid water-soluble inorganic bond in an amount of 5 to 30 weight parts, water from 5 to 50 weight parts and a burning out organic substance previously imbibed with liquid in-organic bond in an amount of 50 to 180 volume parts per 100 vo-lume parts in relation to the remaining mixture.
2.Thermoinsulating refractory mass according to claim 1, characterized in that the burning out organic substance is husks of rice, wheat, oats, rye or barley or saw-dusts or cellulose pulp or a mixture thereof.
3.Thermoinsulating refractory mass according to claim 1, characterized in that the solid or liquid water-soluble inorga-nic bond is a mixture of acid metal phosphates of the type of aluminium, chromium or magnesium phosphate or aluminium sulpha-te or a mixture of metal sulphates and phosphates or an organo-silicate compound of the type of ethylsilicate or alkaline me-tasilicate.
4.Thermoinsulating refractory mass according to claim 1, characterized in that the refractory clay or kaolin contained in the mass are replaced by fine-grained refractory inactive filler of the type of alumina, alumosilicate chamotte,mulite cha-motte, silica, chromic oxide, magnesium oxide, magnesium silicate, zirconium silicate or a mixture of the same in an amount to 50%.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BG65367 | 1984-05-07 | ||
| BG6536784A BG39893A1 (en) | 1984-05-07 | 1984-05-07 | Thermoinsulating refractory mass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1243691A true CA1243691A (en) | 1988-10-25 |
Family
ID=3913801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000480540A Expired CA1243691A (en) | 1984-05-07 | 1985-05-01 | Refractory thermoinsulating mass |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0160940B1 (en) |
| JP (1) | JPS6117477A (en) |
| AU (1) | AU584083B2 (en) |
| BG (1) | BG39893A1 (en) |
| CA (1) | CA1243691A (en) |
| DE (1) | DE3572470D1 (en) |
| DK (1) | DK193685A (en) |
| FI (1) | FI78450C (en) |
| GR (1) | GR851088B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3826220A1 (en) * | 1988-08-02 | 1990-02-08 | Hoechst Ceram Tec Ag | METHOD FOR PRODUCING CERAMIC MOLDED BODIES |
| DE29505162U1 (en) * | 1995-03-27 | 1996-08-22 | Mansfeld Lothar | Insulation material |
| CA2285079A1 (en) * | 1997-03-26 | 1998-10-01 | Ricegrowers' Co-Operative Limited | Insulation material |
| JP4739610B2 (en) * | 2001-09-07 | 2011-08-03 | ヤンマー株式会社 | Mobile farm machine |
| JP4857955B2 (en) * | 2006-06-29 | 2012-01-18 | 井関農機株式会社 | Tractor |
| CN109336550A (en) * | 2018-12-25 | 2019-02-15 | 佛山科学技术学院 | A kind of heat preserving ceramic and its preparation process |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE173037C (en) * | 1900-01-01 | |||
| DE594000C (en) * | 1930-11-02 | 1934-03-09 | Didier Werke Akt Ges | Process for the production of refractory, highly porous insulating bricks |
| US3258349A (en) * | 1962-05-11 | 1966-06-28 | Norton Co | Light porous refractory brick and method |
| GB1067625A (en) * | 1964-12-01 | 1967-05-03 | Zirconal Ltd | Insulating refractory shapes |
| DE2909653A1 (en) * | 1979-03-12 | 1980-09-25 | Peter O Glienke | Lightweight porous building bricks - where pores are surrounded by expanded perlite and/or glass or ceramic frits, so bricks have high compression strength |
| DE3001151C2 (en) * | 1980-01-15 | 1982-03-04 | Hans Joachim Dr. 6640 Merzig Poegel | Process for the manufacture of light ceramic products |
-
1984
- 1984-05-07 BG BG6536784A patent/BG39893A1/en unknown
-
1985
- 1985-04-30 FI FI851712A patent/FI78450C/en not_active IP Right Cessation
- 1985-04-30 DK DK193685A patent/DK193685A/en unknown
- 1985-05-01 CA CA000480540A patent/CA1243691A/en not_active Expired
- 1985-05-02 EP EP19850105370 patent/EP0160940B1/en not_active Expired
- 1985-05-02 DE DE8585105370T patent/DE3572470D1/en not_active Expired
- 1985-05-06 AU AU42011/85A patent/AU584083B2/en not_active Ceased
- 1985-05-06 GR GR851088A patent/GR851088B/el unknown
- 1985-05-07 JP JP9654585A patent/JPS6117477A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FI78450C (en) | 1989-08-10 |
| FI851712L (en) | 1985-11-08 |
| DE3572470D1 (en) | 1989-09-28 |
| JPS6117477A (en) | 1986-01-25 |
| EP0160940B1 (en) | 1989-08-23 |
| GR851088B (en) | 1985-11-25 |
| AU584083B2 (en) | 1989-05-18 |
| DK193685A (en) | 1985-11-08 |
| FI78450B (en) | 1989-04-28 |
| BG39893A1 (en) | 1986-09-15 |
| EP0160940A2 (en) | 1985-11-13 |
| DK193685D0 (en) | 1985-04-30 |
| EP0160940A3 (en) | 1986-03-26 |
| AU4201185A (en) | 1985-11-14 |
| FI851712A0 (en) | 1985-04-30 |
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