DE535223C - Process for the production of highly refractory items containing chromium - Google Patents

Process for the production of highly refractory items containing chromium

Info

Publication number
DE535223C
DE535223C DES82092D DES0082092D DE535223C DE 535223 C DE535223 C DE 535223C DE S82092 D DES82092 D DE S82092D DE S0082092 D DES0082092 D DE S0082092D DE 535223 C DE535223 C DE 535223C
Authority
DE
Germany
Prior art keywords
production
slag
containing chromium
highly refractory
chromium
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
DES82092D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DES82092D priority Critical patent/DE535223C/en
Application granted granted Critical
Publication of DE535223C publication Critical patent/DE535223C/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

Verfahren zur Herstellung chromhaltiger hochfeuerfester Gegenstände Die Erfindung bezieht sich auf die Herstellung chromhaltiger hochfeuerfesterGegenstände. Man hat bereits vorgeschlagen, Schlacken, die bei der IIerstellung hochgekohlten Ferrochroms anfallen, ft-uerfesten Zwecken dienstbar zu machen, indem man derartige Schlacken, gegebenenfalls nach besonderer Erhöhung des Magnesiagehaltes, zerkleinerte. mit Bindemitteln vermischte, formte und erneut brannte. =\uf diesem Wege lassen sich nur minderwertige, für feuerfeste Zwecke praktisch überhaupt nicht brauchbare Erzeugnisse erhalten. .-\n sich ist die. Feuerfestigkeit solcher Schlacken nicht besonders hoch, und durch die Art der in Vorschlag gebrachtenVerarbeitung der Schlacken geht die Feuerfestigkeit noch in einem solchen Umfang zurück, wie es für die Praxis nicht tragbar ist.Process for the production of highly refractory articles containing chromium The invention relates to the manufacture of highly refractory articles containing chromium. It has already been proposed to use slag that was highly carbonized during production Ferrochromes are incurred to serve non-permanent purposes by using such Slag, possibly after a special increase in the magnesia content, comminuted. mixed with binders, molded and re-fired. = Leave this on only inferior, practically useless for refractory purposes Products received. .- \ n is the. Fire resistance of such slags is not particularly high, and by the type of slag processing proposed the fire resistance still decreases to the same extent as it is in practice is not portable.

Es wurde gefunden, daß sich auch Schlacken, die bei der Herstellung von Eisenchromlegierungen anfallen, zur Herstellung feuerfester Gegenstände mit sicherem Erfolg verwenden lassen, wenn man erfindungsgemäß bei der Herstellung von Eisenchronilegierungen die Reduktion der Chromerze mit einem Linterschuß an Kohlenstoff durchführt und die Schlacke vorzugsweise durch Gießen in feuerflüssigem Zustande verformt wird.It was found that there are also slags that are produced in the production incurred from iron-chromium alloys, for the manufacture of refractory items with can be used with certain success if you use the invention in the production of Iron chrome alloys the reduction of chrome ores with a lint shot of carbon carried out and the slag preferably by pouring in a molten state is deformed.

Es kommt also einerseits, wie erkannt wurde, auf die Herstellung chromreicher Schlacken an, andererseits auf die --Erhaltung des im Schmelzfluß erzielten Zustandes der Schlacken. Durch Anreicherung der Schlacke mit Chromoxyd infolge der Anwendung eines Unterschusses an Reduktionsmittel wird die Zusammensetzung der Schlacke derart verändert, daß sie an sich eine außerordentlich hohe Feuerfestigkeit besitzt. Vorteilhaft wählt man deshalb überhaupt chromoxydreiche Ausgangsstoffe für das Verfahren. Unter Umständen kann man auch bei der Möllereinstellung eine Chronioxvdanreicherung vornehmen. gegebenenfalls durch Zugabe von Chromoxyd selbst.On the one hand, as has been recognized, it depends on the production of chromium-rich On the other hand on the maintenance of the state achieved in the melt flow the slag. By enriching the slag with chromium oxide as a result of the application a deficiency of reducing agent, the composition of the slag is such changed that it has an extremely high fire resistance per se. Advantageous Therefore, one chooses starting materials rich in chromium for the process. Under Under certain circumstances, it is also possible to carry out a chronioxide enrichment when setting the Möllers. possibly by adding chromium oxide itself.

:'eben der hohen Feuerfestigkeit ist auch eine bisher mit keinem anderen feuerfesten Stoff erreichte Standfestigkeit bei hohen Temperaturen unter Druckbelastung und Widerstandsfähigkeit gegen chemische Angriffe, sowohl basischer als auch saurer Art, vorhanden.: 'The high fire resistance is also unparalleled so far Fireproof fabric achieved stability at high temperatures under pressure and resistance to chemical attack, both more basic and acidic Kind, present.

Diese für feuerfeste Zwecke überaus wichtigen Eigenschaften lassen sich erfindungsgemäß dann ausnutzen, wenn der im Schmelzverfahren erzielte Zustand erhalten bleibt, also eine Zerkleinerung der Schlacke vermieden wird. 1Tan vergießt deshalb die Schlacke zu Kuchen und zerschlägt diese Kuchen nach Zweckmäßigkeit in Stücke von mehr oder weniger regelmäßiger oder unregelmäßiger Form, so daß sie als Baukörper verwendbar sind.These properties are extremely important for refractory purposes then utilize according to the invention when the state achieved in the melting process is retained, so crushing of the slag is avoided. 1Tan shed therefore the slag to cake and smash this cake in according to expediency Pieces of more or less regular or irregular shape so that they are as Structures are usable.

Ein anderer Weg ist das bereits erwähnte Gießen der feuerflüssigen Schlacke in geeignete Formen. Nach der Erfindung hergestellte Erzeugnisse haben im Sienens-Martin-Ofen, an den gefährlichsten Stellen eingesetzt, im Vcrgleicli zu anderen, nach bekannten -Verfahren hergestellten feuerfesten Erzeugnissen eine Lebensdauer ergeben, die das 1j- und Mehrfache der Lebensdauer der besten bisher bekannten feuerfesten Erzeugnisse beträgt.Another way is the already mentioned pouring of the hot liquid Slag into suitable shapes. Have articles made according to the invention in the Sienens-Martin oven, used in the most dangerous places, in comparison to other refractory products manufactured by known processes one Life expectancy that is 1j and several times the life expectancy of the best so far known refractory products.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung chromhaltiger hochfeuerfester Gegenstände, dadurch gekennzeichnet, ctaß bei der Herstellung von Eisen-Chrom-Legierungen die Reduktion der Chromerze mit einem Unterschuß an Kohlenstoff durchgeführt und die Schlacke vorzugsweise durch Gießen in feuerflüssigem Zustande verformt wird.PATENT CLAIM: Process for the production of chromium-containing highly refractory Objects, characterized in the manufacture of iron-chromium alloys the reduction of the chrome ores carried out with a deficit of carbon and the slag is preferably deformed by casting in a molten state.
DES82092D 1927-10-11 1927-10-11 Process for the production of highly refractory items containing chromium Expired DE535223C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES82092D DE535223C (en) 1927-10-11 1927-10-11 Process for the production of highly refractory items containing chromium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES82092D DE535223C (en) 1927-10-11 1927-10-11 Process for the production of highly refractory items containing chromium

Publications (1)

Publication Number Publication Date
DE535223C true DE535223C (en) 1931-10-07

Family

ID=7510094

Family Applications (1)

Application Number Title Priority Date Filing Date
DES82092D Expired DE535223C (en) 1927-10-11 1927-10-11 Process for the production of highly refractory items containing chromium

Country Status (1)

Country Link
DE (1) DE535223C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1187356B (en) * 1958-07-09 1965-02-18 Dynamidon Werk Engelhorn & Co Refractory ceramic bodies as heat-storing material in electrically heated heat storage ovens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1187356B (en) * 1958-07-09 1965-02-18 Dynamidon Werk Engelhorn & Co Refractory ceramic bodies as heat-storing material in electrically heated heat storage ovens

Similar Documents

Publication Publication Date Title
CH499466A (en) Process for making glass
DE535223C (en) Process for the production of highly refractory items containing chromium
AT125219B (en) Process for the production of building structures.
DE474021C (en) Process for the production of porous refractory moldings using substances that evolve gases by chemical means
DE1237597B (en) Process for melting down racing lobbies, sponge iron and Like. Artificial scrap and device for performing the method
DE564990C (en) Process for the production of gas cleaning mass
DE587827C (en) Process for the production of highly refractory masses
DE413903C (en) Process for the production of pieces from vitreous slag
DE606701C (en) Process for the production of chromite stones
DE1938061A1 (en) Process for the extraction of iron from iron ore
DE447051C (en) Method of making an abrasive
DE58796C (en) Process for the production of a homogeneous slag from natural slag
DE539640C (en) Process for the production of pure sulfur dioxide
DE597103C (en) Process for burning cement in shaft furnaces
DE608194C (en) Process for the production of acid-resistant silicon-iron castings
AT84125B (en) Process for the production of fittings from coal, ore or metal waste.
DE211300C (en)
AT105035B (en) Process for the production of a catalyst, in particular for the production of synthetic ammonia.
AT122479B (en) Process for the production of refractory goods from pure zirconium oxide.
AT128796B (en) Process for the preparation of carbon monoxide.
AT126112B (en) Process for the fractional extraction of metals and metalloids.
DE834361C (en) Material and process for manufacturing refractory products
AT146008B (en) Process for producing low carbon metals or alloys.
DE423793C (en) Process for converting the liquid slag from gas generators and pulverized coal furnaces onto Portland cement
DE977271C (en) Process for treating metal, primarily iron, melts