DE400138C - Process for the production of alloys from metals of the iron and chromium groups with silicon - Google Patents

Process for the production of alloys from metals of the iron and chromium groups with silicon

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Publication number
DE400138C
DE400138C DEW53600D DEW0053600D DE400138C DE 400138 C DE400138 C DE 400138C DE W53600 D DEW53600 D DE W53600D DE W0053600 D DEW0053600 D DE W0053600D DE 400138 C DE400138 C DE 400138C
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DE
Germany
Prior art keywords
silicon
iron
production
alloys
metals
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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
DEW53600D
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German (de)
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Individual
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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.)
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Publication date
Application filed by Individual filed Critical Individual
Priority to DEW53600D priority Critical patent/DE400138C/en
Application granted granted Critical
Publication of DE400138C publication Critical patent/DE400138C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00Preliminary treatment of ores or scrap
    • C22B1/14Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24Binding; Briquetting ; Granulating
    • C22B1/248Binding; Briquetting ; Granulating of metal scrap or alloys
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C33/00Making ferrous alloys
    • C22C33/02Making ferrous alloys by powder metallurgy

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Manufacturing & Machinery (AREA)
  • Silicon Compounds (AREA)

Description

Verfahren zur Herstellung von Legierungen aus 1Vletallen der Eisen- und Chromgruppe mit Silizium.Process for the production of alloys from 1 metals of the iron and chromium group with silicon.

Zusatz zum Patent 341793. Bei metallurgischen Arbeitsverfahren, welche einen Zusatz von Ferrosilizium erfordern, ist man bestrebt, diesen bei höheren Temperaturen leicht oxydierbaren Körper vor Abbrand zu schützen. Bei manchen Verfahren, z. B. im Kupolofen, bietet dieser Schutz bekanntlich Schwierigkeiten.Addition to patent 341793. In metallurgical working processes, which require the addition of ferrosilicon, efforts are made to do so at higher temperatures to protect easily oxidizable bodies from burning. In some procedures, e.g. B. In the cupola, this protection is known to present difficulties.

Das Patent 341793 gibt die Möglichkeit, das Silizium z. B. im Kupolofen durch die silicothermische Reaktion schnell zu verflüssigen, es # ci. urch vor der Oxydation durch den Ofenwind lUbewahren und dem Eisenbad vorteilhafterweise flüssig einzuverleiben. Diese Arbeitsweise nach dem Patent 341793 wird nun durch die Vorgänge im Kupolofen behindert oder unmöglich gemacht, weil sich die für die silicothermische Reaktion erforderlichen Komponenten, weiches Eisen und Silizium oder Ferrosilizium, nach der Aufgabe im Schacht wieder entmischen und das weiche Eisen durch das Aufkohlen aus dem Schmelzkoks für die Reaktion unbrauchbar würde.The patent 341793 gives the possibility to use the silicon z. B. in the cupola furnace to liquefy quickly through the silicothermal reaction, it # ci. urch in front of the Preserve oxidation by the furnace wind and advantageously liquid in the iron bath to incorporate. This working method according to the patent 341793 is now carried out by the processes in the cupola hindered or made impossible because the for the silicothermal Reaction components required, soft iron and silicon or ferrosilicon, after the task in the shaft, unmix again and the soft iron by carburizing from the fused coke would be unusable for the reaction.

Diese vorgenannten Störungen beseitigt die Erfindung dadurch, daß sie die Reaktionsbestandteile in an sich bekannter Weise vorher brikettiert oder mit Hilfe eines geeigneten Bindemittels, z. B. Zement, zu Formlingen verarbeitet. Solche Körper bleiben vor der Entmischung bewahrt, und es wird auch ein schädliches Auf kohlen des weichen Eisens vermieden. Kommen diese nach derErfindung hergestellten Reaktionskörper z. B. im Kupolofen auf das Koksbett der Schmelzzone, so verflüssigen sie sich in dem Augenblick, wo sie die Temperatur von etwa 1200' C, bei welcher die bekannte silicothermische Reaktion erfolgt, erreicht haben, und das Silizium bzw. die Silizium-Eisenlegierung läuft zwischen den Koksstücken sofort nach unten in das Eisenbad, das Silizium ist damit der oxydierenden Einwirkung des Ofenbades entzogen.The above-mentioned disturbances are eliminated by the invention they previously briquetted or briquetted the reaction components in a manner known per se with the help of a suitable binder, e.g. B. cement, processed into moldings. Such bodies are prevented from segregating, and it also becomes a harmful one Avoided on coals of soft iron. Come these manufactured according to the invention Reaction body z. B. in the cupola on the coke bed of the melting zone, so liquefy they are at the moment when they have the temperature of about 1200 'C, at which the well-known silicothermal reaction takes place, and the silicon or the silicon-iron alloy runs down between the coke pieces immediately in the iron bath, the silicon is thus the oxidizing effect of the furnace bath withdrawn.

Die Herstellung von Formlingen aus Silizium oder Ferrosilizium ist bekannt. Die Erfindung besteht demgegenüber darin, daß aus Silizium oder Ferrosilizium und kohlenstoffarmem Eisen bestehende Formlinge verwendet werden, wodurch das in ihnen enthaltene Silizium nur wesentlich geringere Zeit bis zu seiner Verflüssigung benötigt und infolgedessen auch nur kürzere Zeit den schädlichen Einflüssen der oxydierenden Ofengase ausgesetzt ist als die Silizium enthaltenden Formlinge bekannter Art, die so lange den heißen Ofengasen ausgesetzt bleiben, bis sie von außen her restlos abgeschmolzen sind; hierbei wird natürlich ein beträchtlicher Teil des Siliziums oxydiert und verschlackt und geht somit verloren. Die vorliegende Erfindung vermeidet diese Verluste praktisch nahezu vollständig.The production of moldings from silicon or ferrosilicon is known. In contrast, the invention consists in that made of silicon or ferrosilicon and low-carbon iron bricks can be used, whereby the in the silicon they contain only takes a much shorter time to liquefy needed and as a result, the harmful effects of the exposed to oxidizing furnace gases is better known than the silicon-containing briquettes Kind that remain exposed to the hot furnace gases until they come from the outside are completely melted off; this will, of course, take up a considerable amount of the silicon oxidizes and slags and is thus lost. The present invention avoids these losses practically almost completely.

Infolge ihrer Eigenschaften lassen sich die Formlinge nach der Erfindung auch dort überall mit Vorteil verwenden, wo Silizium zugesetzt und in kurzer zeit verflüssigt werden soll, z. B. im Herdofen oder in der Birne.As a result of their properties, the moldings according to the invention Also use with advantage wherever silicon is added and should be liquefied in a short time, z. B. in the stove or in the pear.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Legierungen aus Metallen der Eisen- und Chromgruppe mit Silizium nach Patent 341793, dadurch gekennzeichnet, daß dem Schmelzgut, z. B. der Gattierung des Kupolofens, aus Silizium oder Ferrosilizium und kohlenstoffarmem Eisen bestehende Formlinge zugesetzt werden, die in an sich bekannter Weise hergestellt sind. PATENT CLAIM: A process for the production of alloys from metals of the iron and chromium groups with silicon according to patent 341793, characterized in that the melting material, e.g. B. the charge of the cupola, made of silicon or ferrosilicon and low-carbon iron are added existing moldings, which are produced in a conventional manner.
DEW53600D 1919-10-07 1919-10-07 Process for the production of alloys from metals of the iron and chromium groups with silicon Expired DE400138C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW53600D DE400138C (en) 1919-10-07 1919-10-07 Process for the production of alloys from metals of the iron and chromium groups with silicon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW53600D DE400138C (en) 1919-10-07 1919-10-07 Process for the production of alloys from metals of the iron and chromium groups with silicon

Publications (1)

Publication Number Publication Date
DE400138C true DE400138C (en) 1924-08-01

Family

ID=7604831

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW53600D Expired DE400138C (en) 1919-10-07 1919-10-07 Process for the production of alloys from metals of the iron and chromium groups with silicon

Country Status (1)

Country Link
DE (1) DE400138C (en)

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