DE969619C - Process for the production of carbon and graphite molded bodies - Google Patents

Process for the production of carbon and graphite molded bodies

Info

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
Application number
DES37797A
Other languages
German (de)
Inventor
Dr-Ing Franz Jeitner
Dr-Ing Erich Nedopil
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Plania Werke AG
Original Assignee
Siemens Plania Werke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Plania Werke AG filed Critical Siemens Plania Werke AG
Priority to DES37797A priority Critical patent/DE969619C/en
Application granted granted Critical
Publication of DE969619C publication Critical patent/DE969619C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515Shaped 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
    • C04B35/52Shaped 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
    • C04B35/528Shaped 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
    • C04B35/532Shaped 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
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515Shaped 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
    • C04B35/52Shaped 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
    • C04B35/522Graphite

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)

PATENTANSPRÜCHE:PATENT CLAIMS: 1. Verfahren zur Herstellung von Kohle- und Graphitformkörpem aus ungeglühten PetroloderPechkoksen unter Zusatz von teer-und pechartigen Bindemitteln in Emulsionsform, dadurch gekennzeichnet, daß den Mischungen zur Erhöhung der Festigkeit in grünem (d. h. getrocknetem) Zustand Zusätze von 0,5 bis "5 0/0 Schwefei zugegeben werden.1. Process for the production of carbon and graphite moldings from unannealed petroleum or pitch cokes with the addition of tar- and pitch-like binders in emulsion form, thereby characterized in that the mixtures in order to increase the strength in green (i.e. dried) Condition Additions from 0.5 to "5 0/0 sulfur be admitted. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Schwefel in Form von Schwefelblume oder Pulver oder als kolloidal verteilter Schwefel zugesetzt wird.2. The method according to claim 1, characterized in that that the sulfur is added in the form of sulfur flowers or powder or as colloidally distributed sulfur. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Schwefel der wäßrigen Phase der Emulsion zugesetzt und darauf Teer oder Pech zugeführt wird.3. The method according to claim 1, characterized in that that the sulfur is added to the aqueous phase of the emulsion and then tar or pitch is added. 0 609529/486 5.56 (809 551/18 6.58)0 609529/486 5.56 (809 551/18 6.58)
DES37797A 1954-01-27 1954-02-24 Process for the production of carbon and graphite molded bodies Expired DE969619C (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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