DE977437C - Process for reducing the gas content of silicon alloys - Google Patents

Process for reducing the gas content of silicon alloys

Info

Publication number
DE977437C
DE977437C DEK18006A DEK0018006A DE977437C DE 977437 C DE977437 C DE 977437C DE K18006 A DEK18006 A DE K18006A DE K0018006 A DEK0018006 A DE K0018006A DE 977437 C DE977437 C DE 977437C
Authority
DE
Germany
Prior art keywords
silicon alloys
reducing
gas content
hydrogen
nitrogen
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
DEK18006A
Other languages
German (de)
Inventor
Hans Dr-Ing Ebert
Klaus Dipl-Ing Frank
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.)
Knapsack AG
Original Assignee
Knapsack 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 Knapsack AG filed Critical Knapsack AG
Priority to DEK18006A priority Critical patent/DE977437C/en
Application granted granted Critical
Publication of DE977437C publication Critical patent/DE977437C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Silicon Compounds (AREA)

Description

Verfahren zur Verringerung des Gasgehaltes von Siliziumlegierungen Der Aluminium- und/oder Kohlenstoffgehalt von Siliziumlegierungen kann vermindert werden, wenn man diese Siliziumlegierungen in geschmolzenem Zustand mit Luft, reinem Sauerstoff oder mit anderen sauerstoffhaltigen Gasen, z. B. in einem Konverter, verbläst. Datei sinkt der Siliziumgehalt überraschenderweise beim Verblasen flüssigen Ferrosiliziums nur unwesentlich.Process for reducing the gas content of silicon alloys The aluminum and / or carbon content of silicon alloys can be reduced when you get these silicon alloys in the molten state with air, pure Oxygen or with other oxygen-containing gases, e.g. B. in a converter, fades. File, the silicon content drops surprisingly when blowing liquid Ferrosilicon only insignificantly.

Bei der Anwendung dieses Verfahrens zeigte sich nun erfindungsgemäß, daß bei der Verwendung von reinem Sauerstoff außer einer Verringerung des Aluminium- und Kohlenstoffgehaltes eine erhebliche Herabsetzung des Stickstoff- sowie des Wasserstoffgehaltes in den Siliziumlegierungen eintritt. Die Herabsetzung dieser Gasgehalte in den Siliziumlegierungen der Schwermetalle, insbesondere im 75o/oigen Ferrosilizium, ist technisch von größter Bedeutung.When using this method it was found according to the invention that that when using pure oxygen in addition to a reduction in the aluminum and carbon content, a considerable reduction in nitrogen and hydrogen content occurs in the silicon alloys. The reduction of this gas content in the silicon alloys the heavy metals, especially in the 75% ferrosilicon, are of the greatest technical importance Meaning.

Die Erfindung betrifft nun ein Verfahren zur Verringerung des Gasgehaltes, insbesondere des Wasserstoff- und Stickstoffgehaltes von Siliziumlegierungen, welches dadurch gekennzeichnet ist, daß die Siliziumlegierungen in geschmolzenem Zustand mit reinem Sauerstoff in an sich bekannter Weise mittels Durchleiten, Durchblasen oder Aufblasen von Sauerstoff behandelt werden. Die Restgehalte an Stickstoff und Wasserstoff können mit stickstoff- und wasserstofffreien Gasen, vorzugsweise Kohlendioxyd oder Kohlenmonoxyd, ausgespült werden.The invention now relates to a method for reducing the gas content, in particular the hydrogen and nitrogen content of silicon alloys, which characterized in that the silicon alloys are in a molten state with pure oxygen in a manner known per se by means of passing through, blowing through or inflation of oxygen. The remaining levels of nitrogen and hydrogen can be achieved with nitrogen- and hydrogen-free gases, preferably carbon dioxide or carbon monoxide.

Claims (2)

PATENTANSPRÜCHE: i. Verfahren zur Verringerung des Gasgehaltes, insbesondere des Wasserstoff- und Stickstoffgehaltes von Siliziumlegierungen, dadurch gekennzeichnet, daß die Siliziumlegierungen in geschmolzenem Zustand mit reinem Sauerstoff in an sich bekannter Weise mittels Durchleiten, Durchblasen oder Aufblasen von Sauerstoff behandelt werden. PATENT CLAIMS: i. Process for reducing the gas content, in particular the hydrogen and nitrogen content of silicon alloys, characterized in that that the silicon alloys in a molten state with pure oxygen in on known way by means of passing, blowing or inflating oxygen be treated. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die Restgehalte an Stickstoff und Wasserstoff mit Stickstoff- und wasserstofffreien Gasen, vorzugsweise Kohlendioxyd oder Kohlenmonoxyd, ausgespült werden.2. The method according to claim i, characterized in that the Residual levels of nitrogen and hydrogen with nitrogen and hydrogen-free Gases, preferably carbon dioxide or carbon monoxide, are flushed out.
DEK18006A 1953-05-09 1953-05-09 Process for reducing the gas content of silicon alloys Expired DE977437C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK18006A DE977437C (en) 1953-05-09 1953-05-09 Process for reducing the gas content of silicon alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK18006A DE977437C (en) 1953-05-09 1953-05-09 Process for reducing the gas content of silicon alloys

Publications (1)

Publication Number Publication Date
DE977437C true DE977437C (en) 1966-06-08

Family

ID=7215266

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK18006A Expired DE977437C (en) 1953-05-09 1953-05-09 Process for reducing the gas content of silicon alloys

Country Status (1)

Country Link
DE (1) DE977437C (en)

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