GB579098A - Refractories - Google Patents
RefractoriesInfo
- Publication number
- GB579098A GB579098A GB13627/44A GB1362744A GB579098A GB 579098 A GB579098 A GB 579098A GB 13627/44 A GB13627/44 A GB 13627/44A GB 1362744 A GB1362744 A GB 1362744A GB 579098 A GB579098 A GB 579098A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnesia
- silica
- mixture
- parts
- magnesium
- 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
- 239000011819 refractory material Substances 0.000 title 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 22
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 20
- 239000000377 silicon dioxide Substances 0.000 abstract 12
- 239000000395 magnesium oxide Substances 0.000 abstract 10
- 239000000203 mixture Substances 0.000 abstract 8
- 239000000463 material Substances 0.000 abstract 4
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 abstract 2
- 239000011822 basic refractory Substances 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 2
- 239000005995 Aluminium silicate Substances 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 abstract 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 235000012211 aluminium silicate Nutrition 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 238000005367 electrostatic precipitation Methods 0.000 abstract 1
- 239000003546 flue gas Substances 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 230000003993 interaction Effects 0.000 abstract 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 abstract 1
- 239000001095 magnesium carbonate Substances 0.000 abstract 1
- 235000014380 magnesium carbonate Nutrition 0.000 abstract 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 abstract 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 abstract 1
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L magnesium chloride Substances [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 abstract 1
- 229910001629 magnesium chloride Inorganic materials 0.000 abstract 1
- 239000000391 magnesium silicate Substances 0.000 abstract 1
- 235000012243 magnesium silicates Nutrition 0.000 abstract 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 abstract 1
- 235000019341 magnesium sulphate Nutrition 0.000 abstract 1
- 239000011821 neutral refractory Substances 0.000 abstract 1
- 229910052609 olivine Inorganic materials 0.000 abstract 1
- 239000010450 olivine Substances 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- 238000010405 reoxidation reaction Methods 0.000 abstract 1
- 239000011435 rock Substances 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 229910000859 α-Fe Inorganic materials 0.000 abstract 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
- C04B35/01—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
- C04B35/047—Refractories from grain sized mixtures containing chromium oxide or chrome ore
-
- 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
- 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
- C04B35/01—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
- C04B35/16—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 silicates other than clay
- C04B35/20—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 silicates other than clay rich in magnesium oxide, e.g. forsterite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Saccharide Compounds (AREA)
Abstract
In a refractory composition, synthetic crystalline magnesium orthosilicate is formed in the interstices between the grains of an acid, basic, or neutral refractory material, e.g. silica, magnesia, or chrome ore, by the interaction of finely-divided magnesia and silica. The magnesia in the magnesia-silica mixture may be slightly in excess of the amount required for correct synthesis of the magnesium orthosilicate in order to correct impurities in the other materials. The basic refractory material is ground to less than 4.0 mm. size, and dust below 0.1 mm., and preferably below 1.0 mm. is removed. The magnesium orthosilicate components should either or both be of amorphous nature and of particle-sizes of 0.01-0.005 mm. for the magnesia and 0.002-0.0005 mm. for the silica. The magnesia is preferably that collected by electrostatic precipitation from the flue gases from the production of dead-burned magnesite, while the silica may be that obtained from the exhaust gases produced in the production of ferro-silicon by the reduction of quartz by carbon in the presence of steel scrap, or by the reoxidation of silicon vapour obtained in the reduction of silica by carbon at high temperatures. The mixture of the components of the composition is pressed to shape, air-dried and heated to remove moisture and, if necessary, to dehydrate any hydrated magnesium silicates in the material, and then heated to the temperature of reaction of the magnesia and silica but below the point of fusion of the components. According to examples: (a) 60-85 parts of dead-burned magnesia are mixed with 40-15 parts of the magnesia-silica mixture containing 4 parts of magnesia to 3 of silica, and 1-4 per cent of a temporary binder such as a solution of magnesium sulphate or chloride is added, the mixture being used as a ramming-mixture or being pressed to shape under 1000 or, preferably 5000-10,000 lbs. per square inch and burnt at 1400-1600 DEG C.; (b) 60-80 parts of olivine rock may be used in place of the magnesia, an excess of magnesia being used with the silica to convert any iron oxide to p magnesium ferrite; (c) 70-85 parts of chrome ore are used and 4 per cent of kaolin is added to increase crushing strength. The Specification as open to inspection under Sect. 91 states also that in certain cases an excess of silica may be used in the magnesia-silica mixture. This statement does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US579098XA | 1943-06-14 | 1943-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB579098A true GB579098A (en) | 1946-07-23 |
Family
ID=22013493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13627/44A Expired GB579098A (en) | 1943-06-14 | 1944-07-17 | Refractories |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB579098A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2191771A (en) * | 1986-06-03 | 1987-12-23 | Ube Industries | Producing a shaped, sintered magnesia article |
-
1944
- 1944-07-17 GB GB13627/44A patent/GB579098A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2191771A (en) * | 1986-06-03 | 1987-12-23 | Ube Industries | Producing a shaped, sintered magnesia article |
| GB2191771B (en) * | 1986-06-03 | 1990-04-18 | Ube Industries | Process for producing a shaped, sintered magnesia article having an enhanced resistance to hydration and an improved mechanical strength |
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