DE969619C - Process for the production of carbon and graphite molded bodies - Google Patents
Process for the production of carbon and graphite molded bodiesInfo
- Publication number
- DE969619C DE969619C DES37797A DES0037797A DE969619C DE 969619 C DE969619 C DE 969619C DE S37797 A DES37797 A DE S37797A DE S0037797 A DES0037797 A DE S0037797A DE 969619 C DE969619 C DE 969619C
- Authority
- DE
- Germany
- Prior art keywords
- sulfur
- carbon
- pitch
- production
- tar
- 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
-
- 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
- C04B35/522—Graphite
Description
Gemäß einem nicht zum Stande der Technik gehörigen Vorschläge können Kohle- oder Graphitformkörper aus ungeglühten Petrol- oder Pechkoksen (Halbkoksen) unter Zusatz von Emulsionen als Bindemittel hergestellt werden. Als derartige Emulsionen wurden Teer-Wasser- bzw. Pech-Wasser-Emulsionen angeführt. Wendet man an Stelle der üblichen Bindemittel, wie Teer, Teer-Pech und Pech, derartige Emulsionen an, so gelingt es, die zwischen dem Halbkokskorn und dem Teer bzw. Pech eintretende exotherme Reaktion so zu verzögern, daß die sich ergebenden Mischungen im gleichmäßigen Mischungszustand homogen verarbeitet, also verformt und anschließend gebrannt werden können.According to a proposal that does not belong to the state of the art, carbon or graphite shaped bodies can be used from unannealed petroleum or pitch cokes (semi-cokes) with the addition of emulsions can be produced as a binder. Tar-water resp. Pitch-water emulsions listed. If you apply instead of the usual binders, such as tar, Tar pitch and pitch, such emulsions, so it is possible to get between the semi-coke grain and the To delay tar or pitch occurring exothermic reaction so that the resulting mixtures in the Evenly mixed, processed homogeneously, i.e. deformed and then fired can be.
Es wurde weiterhin ausgeführt, daß mit Emulsion gebundene Körper eine wesentlich höhere Brennfestigkeit aufweisen als solche, die mit reinen Bindemitteln verarbeitet werden.It was also stated that bodies bound with emulsion have a significantly higher resistance to fire than those that are processed with pure binders.
Wendet man nun derartige Emulsionsbinder an, ao so stellt sich als nachteilig· heraus, daß die aus- den Mischungen verformten grünen Preßkörper, besonders solche, die nach einem Strangpreßverfahren verformt wurden, ungenügend fest sind.If such emulsion binders are used, then it turns out to be disadvantageous that the emulsion binders Mixtures deformed green compacts, particularly those made by an extrusion process have been deformed, are insufficiently strong.
Gesenkgepießte Körper zeigen im grünen Zustand eine mangelnde Randfestigkeit und bei stranggepreßten Erzeugnissen, die bekanntlich in Fabrikationslängen bis über 1500 mm hergestellt werden, ist es schwierig, diese für die weiteren Prozesse zu transportieren und zu handhaben.Die cast bodies show in the green state a lack of edge strength and, in the case of extruded products, which are known to be in production lengths up to 1500 mm, it is difficult to use them for further processes to transport and handle.
809551/18809551/18
Überraschenderweise hatte sich nun gezeigt, daß geringe Zusätze von elementarem Schwefel diese Festigkeit in grünem (d.h. getrocknetem) Zustand außerordentlich erhöhen, ohne daß nachteilige Wirkungen auf die Endeigenschaften der fertigen Kohle- und Graphitteile eintraten. Man kann sogar im Gegenteil dazu in gewissen Fällen auch eine wesentliche Verbesserung der Endeigenschaften feststellen. Das gilt auch für den Fall, daß denSurprisingly, it has now been shown that small additions of elemental sulfur have this Greatly increase strength in the green (i.e. dried) state without any disadvantageous effects Effects on the final properties of the finished carbon and graphite parts occurred. You can even on the contrary, in certain cases also a substantial improvement in the final properties determine. This also applies in the event that the
ίο Petrolhalbkoksmischungen in bestimmten Anteilen kalzinierter Koks., Graphit oder Ruß zugesetzt wird.ίο petroleum coke mixtures in certain proportions calcined coke., graphite or carbon black is added.
Es ist vorteilhaft, den Schwefel in möglichst feiner Verteilung zuzugeben, i. B. als Schwefelblume oder Schwefelpulver. Als wirksamer erweist es sich, den Schwefel in kolloidaler Form den Mischungen zuzuführen.It is advantageous to add the sulfur in the finest possible distribution, i. B. as sulfur flower or sulfur powder. It proves to be more effective to add the sulfur to the mixtures in colloidal form.
Es ist auch möglich, den Schwefel in die wäßrige Phase der Emulsionen vor Herstellung der Emulsion in kolloidaler Form einzubringen und dann in diese kolloidale wäßrige Phase den Teer bzw. das Pech einzutragen.It is also possible to add the sulfur to the aqueous phase of the emulsions before preparing the emulsion to be introduced in colloidal form and then the tar or that in this colloidal aqueous phase Bad luck to enter.
Die Verarbeitbarkeit derartiger Mischungen, die Schwefel in Mengen von 0,5 bis 5 0/0 enthalten, wird, sonst in keiner Weise beeinträchtigt.The processability of such mixtures, which contain sulfur in amounts of 0.5 to 5%, is, otherwise not affected in any way.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES37797A DE969619C (en) | 1954-01-27 | 1954-02-24 | Process for the production of carbon and graphite molded bodies |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE772519X | 1954-01-27 | ||
DES37797A DE969619C (en) | 1954-01-27 | 1954-02-24 | Process for the production of carbon and graphite molded bodies |
Publications (1)
Publication Number | Publication Date |
---|---|
DE969619C true DE969619C (en) | 1958-06-26 |
Family
ID=25948022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES37797A Expired DE969619C (en) | 1954-01-27 | 1954-02-24 | Process for the production of carbon and graphite molded bodies |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE969619C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1100535B (en) * | 1957-10-24 | 1961-02-23 | Union Carbide Corp | Process for the production of carbon-containing moldings |
DE3231729A1 (en) * | 1982-08-26 | 1984-03-01 | Bergwerksverband Gmbh, 4300 Essen | Process for producing carbon articles |
-
1954
- 1954-02-24 DE DES37797A patent/DE969619C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1100535B (en) * | 1957-10-24 | 1961-02-23 | Union Carbide Corp | Process for the production of carbon-containing moldings |
DE3231729A1 (en) * | 1982-08-26 | 1984-03-01 | Bergwerksverband Gmbh, 4300 Essen | Process for producing carbon articles |
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