DE1931395A1 - Semi-graphite bricks for lining the rest of blast furnaces for the production of iron and steel - Google Patents
Semi-graphite bricks for lining the rest of blast furnaces for the production of iron and steelInfo
- Publication number
- DE1931395A1 DE1931395A1 DE19691931395 DE1931395A DE1931395A1 DE 1931395 A1 DE1931395 A1 DE 1931395A1 DE 19691931395 DE19691931395 DE 19691931395 DE 1931395 A DE1931395 A DE 1931395A DE 1931395 A1 DE1931395 A1 DE 1931395A1
- Authority
- DE
- Germany
- Prior art keywords
- semi
- graphite
- lining
- production
- steel
- 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.)
- Pending
Links
- 229910002804 graphite Inorganic materials 0.000 title claims description 16
- 239000010439 graphite Substances 0.000 title claims description 16
- 239000011449 brick Substances 0.000 title claims description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229910000831 Steel Inorganic materials 0.000 title claims description 3
- 239000010959 steel Substances 0.000 title claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title description 4
- 229910052742 iron Inorganic materials 0.000 title description 2
- 239000000463 material Substances 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910000805 Pig iron Inorganic materials 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 2
- 229910021382 natural graphite Inorganic materials 0.000 claims description 2
- 239000004575 stone Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000012384 transportation and delivery Methods 0.000 description 2
- 241001233037 catfish Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 239000011271 tar pitch 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
- C04B35/515—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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/04—Blast furnaces with special refractories
- C21B7/06—Linings for furnaces
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Metallurgy (AREA)
- Ceramic Products (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Plural Heterocyclic Compounds (AREA)
- Hydrogenated Pyridines (AREA)
Description
Vertreter:Representative:
Dr. Heinrich Reuter per Adresse Farbwerke Hoechst AG vormals Meister Lucius & Brüning - Patentabteilung -6230 Frankfurt (Main) 80 Postfach 80 03 20Dr. Heinrich Reuter by address Farbwerke Hoechst AG formerly Master Lucius & Brüning - Patent Department -6230 Frankfurt (Main) 80 P.O. Box 80 03 20
Fw 6088 AFw 6088 A
19. Juni 1969 Dr.We/JkJune 19, 1969 Dr.We / Jk
"Halbgraphitsteine zur Auskleidung der Rast von Hochöfen für die Herstellung von Eisen und Stahl""Semi-graphite bricks for lining the rest of blast furnaces for the production of iron and steel"
Gegenstand der Erfindung ist ein Halbgraphitstein, der sich besonders zur Auskleidung der Rast von Hochöfen eignet. Die Dauer einer Ofenreise eines Hochofens für die Herstellung von Roheisen wird begrenzt durch die Haltbarkeit der Ofen-Zustellung, nach deren Verschleiß der Hochofen außer Betrieb genommen und neu zugestellt werden muß. Die Standzeit von Gestell-Zustellungen befriedigte im allgemeinen, und die Haltbarkeit von Bodenauskleidungen wurde durch Kühlung der Ofenböden hinreichend verbessert. Unzureichend ist vor allem die Standzeit von Rast-Zustellungen mit den bekannten feuerfesten Auskleidungsmaterialien. Die Ursache des schnellen Verschleißes der Rastauskleidung sind der mechanische Abrieb durch das absinkende Erz-Koks-Gemisch -und die Korrosion der feuerfesten Zustellung durch Alkalien, die aus Erzen-und Koks abgespalten werden.The invention relates to a semi-graphite stone which is particularly suitable for lining the rest of blast furnaces. The duration of a furnace trip of a blast furnace for the production of pig iron is limited by the durability of the furnace lining, after which the blast furnace must be taken out of operation and relined again. The service life of frame deliveries was generally satisfactory, and the durability of floor liners has been sufficiently improved by cooling the furnace floors. Insufficient is above all the service life of locking infeeds with the well-known refractory lining materials. The cause the rapid wear of the locking lining is the mechanical abrasion caused by the sinking ore-coke mixture -and the corrosion of the refractory lining from alkalis, which are split off from ore and coke.
Es wurde nun gefunden, daß eine mit Halbgraphitsteinen ausgekleidete Rast von Hochöfen diese Nachteile nicht aufweist. Die Halbgraphitsteine gemäß der Erfindung sind dadurch gekennzeichnet, daß das kohlenstoffhaltige Grundmaterial ausIt has now been found that a rest of blast furnaces lined with semi-graphite bricks does not have these disadvantages. the Semi-graphite stones according to the invention are characterized in that the carbonaceous base material consists of
009852/1298009852/1298
13313951331395
- 2 - Fw 6088 A- 2 - Fw 6088 A
körnigem und pülverförmigem Elektrographit oder Naturgraphit besteht. Das graphitische Material besteht zweckmäßig aus einem Gemisch von 30 bis 70 %, vorzugsweise 40 bis 60 %, Pulver und 70 bis 30 %, vorzugsweise 60 bis 40 %, körnigem Graphit.granular and powdery electrographite or natural graphite. The graphitic material expediently consists of a mixture of 30 to 70%, preferably 40 to 60%, powder and 70 to 30%, preferably 60 to 40%, granular graphite.
Es wurde weiter gefunden, daß der Bindemittelgehalt der erfindungsgemäßen Graphitsteine, bezogen auf die preßfertige grüne Masse, vorteilhaft 15 bis 26 Gewichts-% beträgt.It was also found that the binder content of the invention Graphite bricks, based on the ready-to-press green mass, is advantageously 15 to 26% by weight.
Halbgraphitsteine gemäß der Erfindung zeichnen sich gegenüber den bisher bekannten feuerfesten Zustellungsmaterialien durch die bessere Abriebbeständigkeit, die größere Wärmeleitfähigkeit, die sehr gute Temperaturwechselbeständigkeit und die verhältnismäßig große Beständigkeit gegenüber Alkalien aus. Während Rast-Zustellungen aus bekannten feuerfesten Materialien nach einer Roheisenerzeugungvon etwa 2 .1Ot fast vollständig verschlissen sind, ist an Rast-Zustellungen aus Halbgraphitsteinen gemäß der Erfindung nach einer Roheisenerzeugung von 2 . 10 t praktisch noch kein Verschleiß zu beobachten. Die überraschend gute Beständigkeit von Rast-Zustellungen aus erfindungsgemäßen Halbgraphitsteinen ermöglicht gegenüber Zustellungen aus den bisher bekannten feuerfesten Materialien beträchtlich längere Betriebsperioden und damit eine bessere Nutzung vorhandener Ofenkapazitäten.Semi-graphite stones according to the invention are distinguished from one another the previously known refractory lining materials due to the better abrasion resistance, the greater thermal conductivity, the very good thermal shock resistance and the relatively high resistance to alkalis the end. While latching infeeds made of known refractory materials after pig iron production of about 2 .1Ot are almost completely worn out, is at locking infeeds from semi-graphite bricks according to the invention after pig iron production from 2. 10 t practically no wear to be observed. The surprisingly good persistence of Latching infeeds made from semi-graphite bricks according to the invention are made possible compared to infeeds made from the previously known ones refractories significantly longer operating periods and thus better use of existing furnace capacities.
Zur Herstellung von Halbgraphitsteinen werden Elektrographit- und/oder Naturgraphitmahlprodukte mit Bindemitteln in Mischknetern bei einer Temperatur von etwa 1200C gemischt. Bindemittel sind vorzugsweise Steinkohlenteerpeche mit Erweichungspunkten zwischen 50 und 1000C, Teere oder Teer-Pech-Gemische. Das graphitische Grundmaterial besteht aus etwa 30 bis 70 %, vorzugsweise 40 bis 60 %, Pulver und 70 bis 30 %, vorzugsweise 60 bis 40 %, körnigem Material, dessen maximale Korn- For the production of semi-graphite bricks Elektrographit- and / or Naturgraphitmahlprodukte be mixed with binders in mixing kneaders at a temperature of about 120 0 C. Binders are preferably coal tar pitches with softening points between 50 and 100 ° C., tars or tar-pitch mixtures. The graphitic base material consists of about 30 to 70%, preferably 40 to 60%, powder and 70 to 30%, preferably 60 to 40%, granular material, the maximum grain size of which
9852/12989852/1298
- 3 - FW 6Ö8S Ä- 3 - FW 6Ö8S Ä
größe 10 mm nicht überschreitet. Eine günstige Trocken-' stoffzusammensetzuDig 1st zum Beispiel:size does not exceed 10 mm. A cheap dry ' material composition is for example:
4 bis 10 mm 20 % 1 bis 4 mm 20 % 0,075 bis 1 tm 10 % < 0*075 in 50%.4 to 10 mm 20% 1 to 4 mm 20% 0.075 to 1 tm 10 % <0 * 075 in 50%.
Der Bindeatit teigehält beträgt 15 bis 26 Gewichts-%, wobei die genaue Bindemittelmenge von der Aufteilung des Trockenstoffes abhängig ist.The binder content of the dough is 15 to 26% by weight, with the exact amount of binder depends on the distribution of the dry matter.
Die plastischen grünen Mischungen werden in bekannter Weise durch S.trang- oder Gesenkpressen, durch Rütteln oder Stampfen zu Blöcken verformt und in Kammer- oder Kammerring-Öfen bei Temperaturen bis zu 1300 °C gebrannt. Die gebrannten, gegebenenfalls bearbeiteten Halbgraphitsteine können knirsch dem Panzer der Rast angepaßt oder nach der Üblichen Verfahrenswelse so verlegt werden, daß bei der Zustellung eine Fuge zwischen den Halbgraphitsteinen und dem Ofenpanzer frei bleibt, die in bekannter Weise mit einer Stampfmasse auszufüllen ist.The plastic green mixes are made in a known manner Formed into blocks by extrusion or die pressing, by shaking or tamping, and in chamber or chamber ring furnaces Fired at temperatures up to 1300 ° C. The burned ones If necessary, machined semi-graphite stones can be grindly adapted to the armor of the Rast or according to the usual Process catfish are laid in such a way that there is a joint between the semi-graphite bricks and the furnace shell during delivery remains free in a known manner with a ramming mass is to be filled out.
00985 2/129 800985 2/129 8
Claims (3)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691931395 DE1931395B2 (en) | 1969-06-20 | 1969-06-20 | Use of semi-graphite bricks to line the rest of the blast furnace |
| NL7003782A NL150410B (en) | 1969-06-20 | 1970-03-17 | PROCESS FOR THE MANUFACTURE OF CARBON-CONTAINING STONES FOR COVERING THE REST OF A HIGH OVEN, AS WELL AS CARBON-CONTAINING STONES MANUFACTURED THEREFORE. |
| AT336370A AT299282B (en) | 1969-06-20 | 1970-04-13 | Semi-graphite bricks for lining the rest of blast furnaces |
| NO149770A NO127186B (en) | 1969-06-20 | 1970-04-20 | |
| ES380418A ES380418A1 (en) | 1969-06-20 | 1970-05-04 | Improvements in or relating to refractory bricks |
| FR7017262A FR2048421A5 (en) | 1969-06-20 | 1970-05-12 | |
| GB2869170A GB1294491A (en) | 1969-06-20 | 1970-06-12 | Improvements in or relating to refractory bricks |
| SE845270A SE376016B (en) | 1969-06-20 | 1970-06-18 | |
| BE752241D BE752241A (en) | 1969-06-20 | 1970-06-19 | SEMI-GRAPHIC BRICKS FOR THE LINING OF THE HIGH-FURNACE DISPLAY FOR THE MANUFACTURING OF IRON AND STEEL |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691931395 DE1931395B2 (en) | 1969-06-20 | 1969-06-20 | Use of semi-graphite bricks to line the rest of the blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE1931395A1 true DE1931395A1 (en) | 1970-12-23 |
| DE1931395B2 DE1931395B2 (en) | 1973-09-27 |
Family
ID=5737572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19691931395 Pending DE1931395B2 (en) | 1969-06-20 | 1969-06-20 | Use of semi-graphite bricks to line the rest of the blast furnace |
Country Status (9)
| Country | Link |
|---|---|
| AT (1) | AT299282B (en) |
| BE (1) | BE752241A (en) |
| DE (1) | DE1931395B2 (en) |
| ES (1) | ES380418A1 (en) |
| FR (1) | FR2048421A5 (en) |
| GB (1) | GB1294491A (en) |
| NL (1) | NL150410B (en) |
| NO (1) | NO127186B (en) |
| SE (1) | SE376016B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017124358A1 (en) * | 2017-10-18 | 2019-04-18 | Refratechnik Holding Gmbh | Use of an offset and / or a shaped or unshaped refractory product for refractory lining of a coal gasification plant, such delivery and coal gasification plant with such delivery |
-
1969
- 1969-06-20 DE DE19691931395 patent/DE1931395B2/en active Pending
-
1970
- 1970-03-17 NL NL7003782A patent/NL150410B/en not_active IP Right Cessation
- 1970-04-13 AT AT336370A patent/AT299282B/en not_active IP Right Cessation
- 1970-04-20 NO NO149770A patent/NO127186B/no unknown
- 1970-05-04 ES ES380418A patent/ES380418A1/en not_active Expired
- 1970-05-12 FR FR7017262A patent/FR2048421A5/fr not_active Expired
- 1970-06-12 GB GB2869170A patent/GB1294491A/en not_active Expired
- 1970-06-18 SE SE845270A patent/SE376016B/xx unknown
- 1970-06-19 BE BE752241D patent/BE752241A/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017124358A1 (en) * | 2017-10-18 | 2019-04-18 | Refratechnik Holding Gmbh | Use of an offset and / or a shaped or unshaped refractory product for refractory lining of a coal gasification plant, such delivery and coal gasification plant with such delivery |
| DE102017124358B4 (en) * | 2017-10-18 | 2019-08-01 | Refratechnik Holding Gmbh | Use of an offset and / or a shaped or unshaped refractory product for refractory lining of a coal gasification plant, such delivery and coal gasification plant with such delivery |
| DE102017124358A9 (en) * | 2017-10-18 | 2019-11-14 | Refratechnik Holding Gmbh | Use of an offset and / or a shaped or unshaped refractory product for refractory lining of a coal gasification plant, such delivery and coal gasification plant with such delivery |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1931395B2 (en) | 1973-09-27 |
| NL150410B (en) | 1976-08-16 |
| AT299282B (en) | 1972-06-12 |
| ES380418A1 (en) | 1972-09-01 |
| BE752241A (en) | 1970-12-21 |
| NO127186B (en) | 1973-05-21 |
| NL7003782A (en) | 1970-12-22 |
| SE376016B (en) | 1975-05-05 |
| GB1294491A (en) | 1972-10-25 |
| FR2048421A5 (en) | 1971-03-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| SH | Request for examination between 03.10.1968 and 22.04.1971 |