GB870730A - Improvements in thermal processing of green carbon articles - Google Patents
Improvements in thermal processing of green carbon articlesInfo
- Publication number
- GB870730A GB870730A GB8941/58A GB894158A GB870730A GB 870730 A GB870730 A GB 870730A GB 8941/58 A GB8941/58 A GB 8941/58A GB 894158 A GB894158 A GB 894158A GB 870730 A GB870730 A GB 870730A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zone
- baking
- flues
- temperature
- coke
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
- C04B35/528—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
- C04B35/532—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Baked carbon articles are formed by passing preformed green articles containing crushed carbon and a carbonisable binder in succession through a tunnel kiln comprising successive preheating, baking, soaking, and cooling zones. The preheating zone may have a rate of temperature rise of 2-40 DEG C./hr. and a maximum temperature of 400-600 DEG C. The baking zone may have a rate of temperature rise of 4-50 DEG C./hr. and a maximum temperature of 800-1300 DEG C. The cooling zone may <PICT:0870730/III/1> have a rate of temperature drop of 2-50 DEG C./hr. and a minimum temperature of 200-400 DEG C. The carbon may be in the form of anthracite coal, bituminous coal coke, pitch coke, and/or petroleum coke. A range of particle size distribution is specified. The carbonisable binder may be oil-gas, coke oven, lignite, petroleum, and/or coal-tar pitch. It may have a m.p. of 75-150 DEG C., preferably 105-120 DEG C. It may be present in an amount of 5-25%, preferably 12-20%. Combustion supporting gas may be introduced into the baking and soaking zones to consume deposited carbon. As shown a tunnel kiln is heated by a pair of muffle flues 12 having burners 14. The preheating and baking zones may be separated from the flues by porous brick-work (not shown), and the pressure in the flues may be less than in the preheating zone and more than in the baking zone by 0.001-0.5 inches of water. Thus a portion of the material vaporized in the furnace may be condensed in the cooler parts thereof, a portion may pass into flues 12 from the preheating zone, and a portion may be burnt in the baking zone. Coke and soot may be removed by reaction with steam from jets 30. The temperature and gas flow pattern may be controlled by injecting gas containing not more than 2% of oxygen at a rate of up to 200 cu. ft./min. at various points in the kiln. The inert gas may originate outside the kiln or may be withdrawn from the kiln itself or the muffle flues thereof. Further control of temperature may be effected by passing a mixture of hot products of combustion and air through a series of tubes (not shown) in the preheating zone, and cool air through a series of horizontal (as shown) or vertical pipes in the cooling zone.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US870730XA | 1957-04-24 | 1957-04-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB870730A true GB870730A (en) | 1961-06-21 |
Family
ID=22202952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8941/58A Expired GB870730A (en) | 1957-04-24 | 1958-03-20 | Improvements in thermal processing of green carbon articles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB870730A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2355709A1 (en) * | 1972-11-07 | 1974-06-06 | Shinagawa Firebrick Co Ltd | METHOD AND MUFFLE FOR SINTERING OBJECTS MADE OF COAL |
| US3957957A (en) * | 1974-05-30 | 1976-05-18 | Ashland Oil, Inc. | Method for preparing graphite articles |
| GB2187830A (en) * | 1986-03-12 | 1987-09-16 | Johnson H & R Tiles Ltd | Continuous kiln for ceramics |
| US9234700B1 (en) * | 2013-03-15 | 2016-01-12 | Carbonyx, Inc. | Tunnel oven air leakage controller, system and method |
-
1958
- 1958-03-20 GB GB8941/58A patent/GB870730A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2355709A1 (en) * | 1972-11-07 | 1974-06-06 | Shinagawa Firebrick Co Ltd | METHOD AND MUFFLE FOR SINTERING OBJECTS MADE OF COAL |
| US3957957A (en) * | 1974-05-30 | 1976-05-18 | Ashland Oil, Inc. | Method for preparing graphite articles |
| GB2187830A (en) * | 1986-03-12 | 1987-09-16 | Johnson H & R Tiles Ltd | Continuous kiln for ceramics |
| GB2187830B (en) * | 1986-03-12 | 1990-05-23 | Johnson H & R Tiles Ltd | Process and apparatus for the firing of glazed products |
| US9234700B1 (en) * | 2013-03-15 | 2016-01-12 | Carbonyx, Inc. | Tunnel oven air leakage controller, system and method |
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