DE699760C - Refractory stones - Google Patents

Refractory stones

Info

Publication number
DE699760C
DE699760C DE1939I0064719 DEI0064719D DE699760C DE 699760 C DE699760 C DE 699760C DE 1939I0064719 DE1939I0064719 DE 1939I0064719 DE I0064719 D DEI0064719 D DE I0064719D DE 699760 C DE699760 C DE 699760C
Authority
DE
Germany
Prior art keywords
residue
binder
refractory
highly refractory
refractory bricks
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
DE1939I0064719
Other languages
German (de)
Inventor
Dipl-Ing Heinrich Van Thiel
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DE1939I0064719 priority Critical patent/DE699760C/en
Application granted granted Critical
Publication of DE699760C publication Critical patent/DE699760C/en
Expired legal-status Critical Current

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
    • C04B35/01—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
    • C04B35/42—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 chromites
    • 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
    • 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
    • C04B35/12—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 chromium oxide
    • 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
    • C04B35/44—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 aluminates

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Description

Feuerfeste Steine Für hochfeuerfeste Steine werden in der Hauptsache solche Grundstoffe verwendet, die in der Natur . bereits in einem Zustand vorkommen, der die hone Feuerfestigkeit in sich schließt, wie dies z. B. 'bei Sillimanit, Chromerz und Magnesit der Fall ist. Es ist auch bekannt, aüs bestimmt zusammengesetzten Gemengen natürlicher Mineralien durch Brennen hochfeuerfeste Baustoffe zu erzeugen. Auch ist schon vorgeschlägen worden, hochfeuerfeste Massen, die im wesentlichen aus Oxyden des Chroms, Aluminiums und Magnesiums bestehen, im Schmelzverfahren zu erzeugen, wobei durch entsprechende Möllereinstellung eine bestimmte Mineralbildung bewirkt wird. Man kann auch lediglich durch Brennen, also ohne die zum Schmelzen notwendigen Temperaturen anzuwenden, zu Mineralbildungen von hoher Feuerfestigkeit gelangen, wenn man die genannten Oxyde in geeigneter Weise mischt. Diese Arbeitsweise ist jedoch wegen der Unsicherheit in der Reihenfolge :der von kolloidchemischen Vorgängen abhängigen chemischen Umsetzungen technisch nicht brauchbar und für die Herstellung feuerfester Steine unwirtschaftlich.Refractory bricks For highly refractory bricks are mainly such raw materials used in nature. already occur in a state which includes the hone fire resistance, as z. B. 'with sillimanite, chrome ore and magnesite is the case. It is also known to consist of certain compound mixtures natural minerals to produce highly refractory building materials by burning. Even has already been proposed, highly refractory masses consisting essentially of oxides of chrome, aluminum and magnesium are made up of fusion, whereby a certain mineral formation is caused by the appropriate Möllereinigung will. It is also possible to use only firing, without the need for melting Use temperatures, lead to mineral formations of high fire resistance, if the oxides mentioned are mixed in a suitable manner. This way of working is but because of the uncertainty in the sequence: that of colloidal chemical processes dependent chemical reactions technically not usable and for the production refractory bricks uneconomical.

Es wurde nun gefunden, daß man hochfeuerfeste Steine aus hochfeuerfesten Grund-Stoffen, die in zerkleinertem Zustandmiteiner beschränkten Menge eines Bindemittels keramisch verarbeitet werden, in sehr einfacher Weise herstellen kann, wenn man als Grundstoff den gebrannten, als Bindemittel den ungebrannten Rückstand verwendet, der beim alkalischen Aufschluß von Chromerzen entsteht. Dieser Rückstand, der in der-Hauptsache aus Oxyden des Chroms, Magnesiums, Aluminiums und Eisens besteht, wird zunächst durch Brennen bis zur Versinterung in Klinker übergeführt. Diese Klinker werden dann in zerkleinertem Zustand mit einer bieschränkten Menge des ungebrannten Rückstands als Bindemittel in der üblichen Weise verarbeitet, also zu Steinen gepreßt und gebrannt.It has now been found that highly refractory bricks can be made from highly refractory Basic materials that are in a crushed state with a limited amount of a binder be processed ceramics, can be produced in a very simple manner if one The fired residue is used as the raw material and the unfired residue is used as the binding agent, which arises from the alkaline digestion of chrome ores. This residue, which is in which consists mainly of oxides of chromium, magnesium, aluminum and iron, is first converted into clinker by burning until it is sintered. This clinker are then in crushed state with a limited amount of the unfired residue processed as a binder in the usual way, i.e. pressed into stones and burned.

Beispiel Aus dem schwach angefeuchteten Rückstand vom alkalischen Aufschluß von Chromerz mit einem Gehalt von 33 %- Fee 03, 24% Mg 0, 17 % A12 03, 6% Cr2 03 werden Formlinge gestampft oder gepreßt und anschließend bei I5oo° bis zur vollständigen Versinterung gebrannt. Aus den so gewonnenen Klinkern wird durch Brechen körniges Gut gewonnen, das in entsprechender Abstufung der Korngrößen mit 5% trockenem Rückstand gemischt wird. Dieses Gemisch wird in erdfeuchtem Zustand zu Steinen gepreßt und bei 1450' gebrannt.EXAMPLE The slightly moistened residue from the alkaline digestion of chrome ore with a content of 33% - Fee 03, 24% Mg 0.1, 7 % A12 03, 6% Cr2 03 is tamped or pressed and then at 150 ° until sintering is complete burned. Granular material is obtained from the clinker obtained in this way by breaking, which is mixed with 5% dry residue in a corresponding gradation of the grain sizes. This mixture is pressed into stones in an earth-moist state and burned at 1450 '.

Claims (1)

rATE'NTANSPRUCII: Herstellung feuerfester Steine aus hochfeuerfesten Grundstoffen, die in zerkleinertem Zustand mit einer beschränkten Menge eitles Bindemittels keramisch verarbeitet werden, dadurch gekennzeichnet, daB man als Grundstoff den gebrannten, als Bindemittel den ungebrannten Rückstand verwendet, der beim alkalischen Aufschluß von Chromerzen entsteht.RATE'NTANSPRUCII: Manufacture of refractory bricks from highly refractory Basic materials, which in the crushed state with a limited amount of vain binder are processed ceramically, characterized in that the basic material is the calcined, the unfired residue is used as a binder, which is the case with alkaline Digestion of chrome ores occurs.
DE1939I0064719 1939-06-02 1939-06-02 Refractory stones Expired DE699760C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1939I0064719 DE699760C (en) 1939-06-02 1939-06-02 Refractory stones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1939I0064719 DE699760C (en) 1939-06-02 1939-06-02 Refractory stones

Publications (1)

Publication Number Publication Date
DE699760C true DE699760C (en) 1940-12-05

Family

ID=7196181

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1939I0064719 Expired DE699760C (en) 1939-06-02 1939-06-02 Refractory stones

Country Status (1)

Country Link
DE (1) DE699760C (en)

Similar Documents

Publication Publication Date Title
DE699760C (en) Refractory stones
DE849073C (en) Process for the production of components
DE679915C (en) Process for the production of refractory masses
DE966229C (en) Refractory basic materials
DE723558C (en) Refractory mass for the production of stones or rammed earth for lining rotary tubes
DE767579C (en) Process for the production of sintered magnesia
DE966136C (en) Process for the production of highly refractory, basic insulating bricks
DE923955C (en) Refractory material containing chromium oxide, its use and manufacture
DE897068C (en) Basic refractory bricks or masses and processes for their manufacture
DE722159C (en) Process for the production of highly refractory basic bricks
DE617305C (en) Process for the production of sintered magnesia and of refractory masses which contain sintered magnesia
DE733666C (en) Process for the production of a deformable mass for the extraction of masonry bricks
DE710958C (en) Process for the production of highly refractory bricks
DE884621C (en) Process for the production of dolomite linings
DE524173C (en) Refractory lining, especially for metallurgical ovens
AT103718B (en) Process for the production of highly refractory magnesite masses.
DE2044289B2 (en) METHOD OF MANUFACTURING A REFIR-PROOF SINTER MATERIAL
DE656928C (en) Process for the manufacture of refractory bricks or linings
DE2011805B2 (en) Process for the production of refractory magnesia chromite and chromite magnesia bricks
DE1646837B1 (en) PROCESS FOR MANUFACTURING REFRACTORY, IN PARTICULAR UNBURNED MAGNESITE CHROME AND CHROME MAGNESITE STONES
DE973724C (en) Process and device for the production of building materials
DE851016C (en) Highly fire-resistant brick for cement shaft ovens
DE725462C (en) Process for the manufacture of lining for furnaces, in particular cement furnaces
DE748526C (en) Process for the production of clinker bricks or similar building elements with high compressive strength
DE1059338B (en) Process for the production of sintered mineral goods from fine and finely grained starting materials