DE3806563C2 - - Google Patents
Info
- Publication number
- DE3806563C2 DE3806563C2 DE3806563A DE3806563A DE3806563C2 DE 3806563 C2 DE3806563 C2 DE 3806563C2 DE 3806563 A DE3806563 A DE 3806563A DE 3806563 A DE3806563 A DE 3806563A DE 3806563 C2 DE3806563 C2 DE 3806563C2
- Authority
- DE
- Germany
- Prior art keywords
- weight
- masses
- refractory
- binder
- drying oil
- 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 - Fee Related
Links
- 239000011230 binding agent Substances 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 239000011819 refractory material Substances 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 150000001639 boron compounds Chemical class 0.000 claims description 6
- 229920001187 thermosetting polymer Polymers 0.000 claims description 6
- 235000021122 unsaturated fatty acids Nutrition 0.000 claims description 6
- 150000004670 unsaturated fatty acids Chemical class 0.000 claims description 6
- 239000000571 coke Substances 0.000 claims description 5
- 239000010459 dolomite Substances 0.000 claims description 5
- 229910000514 dolomite Inorganic materials 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 5
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 5
- 239000006229 carbon black Substances 0.000 claims description 3
- 239000001095 magnesium carbonate Substances 0.000 claims description 3
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 3
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 3
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims 2
- 239000003921 oil Substances 0.000 description 11
- 235000019198 oils Nutrition 0.000 description 11
- 235000013339 cereals Nutrition 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000000944 linseed oil Substances 0.000 description 3
- 235000021388 linseed oil Nutrition 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical compound C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 description 1
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000007849 furan resin Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- -1 metha nol or ethanol Chemical compound 0.000 description 1
- 229940057952 methanol Drugs 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 235000020777 polyunsaturated fatty acids Nutrition 0.000 description 1
- 229920003987 resole Polymers 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- 235000003441 saturated fatty acids Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63472—Condensation polymers of aldehydes or ketones
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/013—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics containing carbon
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
- C04B35/043—Refractories from grain sized mixtures
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ceramic Products (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3806563A DE3806563A1 (de) | 1988-03-01 | 1988-03-01 | Magnesiumoxidhaltige feuerfestmassen |
| BE8900179A BE1003073A3 (fr) | 1988-03-01 | 1989-02-22 | Masses refractaires contenant de l'oxyde de magnesium. |
| IT8947691A IT1230494B (it) | 1988-03-01 | 1989-02-27 | Materiale refrattario contenente ossido di magnesio |
| FR898902576A FR2628098B1 (fr) | 1988-03-01 | 1989-02-28 | Masses refractaires contenant de l'oxyde de magnesium |
| GB8904513A GB2216116B (en) | 1988-03-01 | 1989-02-28 | Refractory compositions containing magnesium oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3806563A DE3806563A1 (de) | 1988-03-01 | 1988-03-01 | Magnesiumoxidhaltige feuerfestmassen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3806563A1 DE3806563A1 (de) | 1989-09-14 |
| DE3806563C2 true DE3806563C2 (en, 2012) | 1990-04-05 |
Family
ID=6348526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3806563A Granted DE3806563A1 (de) | 1988-03-01 | 1988-03-01 | Magnesiumoxidhaltige feuerfestmassen |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE1003073A3 (en, 2012) |
| DE (1) | DE3806563A1 (en, 2012) |
| FR (1) | FR2628098B1 (en, 2012) |
| GB (1) | GB2216116B (en, 2012) |
| IT (1) | IT1230494B (en, 2012) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0669293A1 (en) * | 1994-02-25 | 1995-08-30 | North American Refractories Company | Resin bonded ceramic-carbon-metal composite comprising boron source and a combination of at least two metals |
| WO2021104607A1 (en) * | 2019-11-26 | 2021-06-03 | Refractory Intellectual Property Gmbh & Co. Kg | A composition and a method for the manufacture of a refractory lining on a surface |
| CN117447213A (zh) * | 2023-09-27 | 2024-01-26 | 江苏雄创新材料有限公司 | 一种免烧耐火保温砖用活性晶型转化助剂及其制备方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2523993C3 (de) * | 1975-05-30 | 1985-08-08 | Sumitomo Metal Industries, Ltd., Osaka | Feuerfestes Reparaturmaterial für Hochöfen |
| US4383045A (en) * | 1982-04-27 | 1983-05-10 | Martin Marietta Corp. | Magnesia refractories bonded with sulfamic acid |
| DE3304119A1 (de) * | 1983-02-08 | 1984-08-09 | Dolomitwerke GmbH, 5603 Wülfrath | Basische feuerfeste massen und formkoerper |
-
1988
- 1988-03-01 DE DE3806563A patent/DE3806563A1/de active Granted
-
1989
- 1989-02-22 BE BE8900179A patent/BE1003073A3/fr not_active IP Right Cessation
- 1989-02-27 IT IT8947691A patent/IT1230494B/it active
- 1989-02-28 GB GB8904513A patent/GB2216116B/en not_active Expired - Fee Related
- 1989-02-28 FR FR898902576A patent/FR2628098B1/fr not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE3806563A1 (de) | 1989-09-14 |
| GB2216116B (en) | 1991-07-31 |
| IT1230494B (it) | 1991-10-24 |
| IT8947691A0 (it) | 1988-02-27 |
| FR2628098A1 (fr) | 1989-09-08 |
| GB2216116A (en) | 1989-10-04 |
| GB8904513D0 (en) | 1989-04-12 |
| FR2628098B1 (fr) | 1992-04-10 |
| BE1003073A3 (fr) | 1991-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3106976C2 (en, 2012) | ||
| DE2321103C3 (de) | Verfahren zur Herstellung eines phosphorhaltigen Stahlpulvers | |
| DE112009000724B4 (de) | Ziegelsteinplatte und Verfahren zu ihrer Herstellung | |
| DE2948977C2 (en, 2012) | ||
| DE2636393C3 (de) | Harzgebundener Graphitkörper | |
| DE2900440C2 (en, 2012) | ||
| AT398205B (de) | Feuerfeste massen oder kitte und ihre verwendung | |
| DE3806563C2 (en, 2012) | ||
| DE69912890T2 (de) | Keramischer Sinterkörper für Zündkerze, sein Herstellungsverfahren und Zündkerze | |
| CH622642A5 (en, 2012) | ||
| DE69812953T2 (de) | Verfahren zur herstellung von sinterprodukten und metallpulverzusammensetzung dafür | |
| DE10244486A1 (de) | Mischung zur Herstellung von gesinterten Formteilen | |
| DE2813123C2 (en, 2012) | ||
| DE2716168A1 (de) | Verfahren zur herstellung von giessformen oder giessformkernen und aus einem waesserigen gemisch aus formsand, bindemittel und kohlenstoffhaltigem material bestehender formwerkstoff zur verwendung bei diesem verfahren | |
| EP0253957B1 (de) | Feuerfeste, spritzfähige Massen oder feuerfeste ungebrannte Formkörper auf MgO-Basis | |
| DE3443250A1 (de) | Monolithisches feuerfestmaterial | |
| DE2747636C2 (de) | Feuerfeste, lagerstabile Massen zum Auskleiden von Behältern für flüssigen Stahl oder flüssiges Eisen auf Basis von gebranntem, gekörnten Dolomit | |
| DE443907C (de) | Masse fuer Elektroden, die erst in dem Ofen gebrannt werden, in dem sie verwendet werden | |
| DE3403583C2 (en, 2012) | ||
| DE1671175B1 (de) | Verfahren zum herstellen von kohlenstofformteilen | |
| DE3916044C2 (de) | Verfahren zur Herstellung eines geformten oder ungeformten feuerfesten Erzeugnisses und die Verwendung der damit hergestellten Erzeugnisse | |
| DE713160C (de) | Verfahren zur Herstellung von Bremsmassen aus synthetischem Kautschuk | |
| DD201996A5 (de) | Verfahren zur herstellung von keramische fasern enthaltenden, koernigen, feuerbestaendigen oder feuerfesten materialien,nach dem verfahren hergestellte materialien und ihre verwendung | |
| DE1100973B (de) | Verfahren zur Herstellung von Anoden zur Aluminiumgewinnung | |
| DE2718816A1 (de) | Feuerfeste gemische |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |