DE2042034A1 - Cast iron including ductile cast iron prodn - from steel scrap briquettes contg silicon and carbon - Google Patents
Cast iron including ductile cast iron prodn - from steel scrap briquettes contg silicon and carbonInfo
- Publication number
- DE2042034A1 DE2042034A1 DE19702042034 DE2042034A DE2042034A1 DE 2042034 A1 DE2042034 A1 DE 2042034A1 DE 19702042034 DE19702042034 DE 19702042034 DE 2042034 A DE2042034 A DE 2042034A DE 2042034 A1 DE2042034 A1 DE 2042034A1
- Authority
- DE
- Germany
- Prior art keywords
- cast iron
- silicon
- chips
- briquetted
- carbon
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B11/00—Making pig-iron other than in blast furnaces
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/08—Manufacture of cast-iron
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
Description
Verwendung von Eisen- und Stahispönen zur Herstellung eines Ausgangsrohstoffes zur Produktion handelsüblicher Gußeisensorten Der bisherige Stand der Technik geht davon aus, daß Gußeisen unter der Verwendet S g von Roheisen oder/und Stahischrott und Kreislaufmaterial in Kupolöfen oder Elektroöfen erzeugt wird. Der aus den Einsatzmaterialien resultierende Mangel an Silizium und Kohle wird durch den Einsatz von handelsüblichen Ferro-Silizium-Sorten, Grcl.hit oder anderen Rohstoffarten ergänzt. Der Nachtei I dieses Verfahrens beruht darin, daß in den entsprechenden Schmelzaggregaten neben den genannten Einsatzmaterialien Ferrolegierungen, nämlich 10, 25, 45 und 75 obiges FeSi, sowie Kohlenstoffträger, die zumeist aus Nebenerzeugnissen der Kohle und Petrochemie sowie der Elektrodenproduktion stammen, verwendet werden müssen. Das Beschwernis beruht darin, daß die genannten Legierungszusätze spezifisch leichter als die Ausgangsschmelze sind und somit eine abbrandlose und innige Mischung nur schwer erreicht werden kann.Use of iron and steel spoons for the production of a raw material for the production of commercially available types of cast iron. The current state of the art works assumes that cast iron is used under the S g of pig iron and / or steel scrap and recycled material is produced in cupolas or electric furnaces. The one from the input materials resulting shortage of silicon and carbon is due to the use of commercially available Ferro-silicon varieties, Grcl.hit or other types of raw materials are added. The night I of this process is based on the fact that in addition to the corresponding melting units the mentioned input materials ferro alloys, namely 10, 25, 45 and 75 above FeSi, as well as carbon carriers, mostly from by-products of coal and petrochemicals as well as the electrode production must be used. The hardship is based on the fact that the alloy additives mentioned are specifically lighter than the starting melt and thus a burn-free and intimate mixture can only be achieved with difficulty.
Die elektrothermisch bedingte Badbewegung unterstützt das Mischen, jedoch kann sie niemals, besonders im Hinblick auf die verschiedenen Konstruktionen der Schmelzaggregate, befriedigende Ergebnisse erbringen. Nicht unerwähnt soll bleiben, daß die genannten Silizium- und Kohlenstoffträger verhältnismäßig teuer und in ihrem Ausbringen unwirtschaftlich sind.The electrothermal bath movement supports the mixing, however, it never can, especially in view of the various constructions of the melting units, produce satisfactory results. Shouldn't go unmentioned that the said silicon and carbon carriers are relatively expensive and in their Spreading is uneconomical.
Die Verwendung von Eisen- und Stahlanfällen aus der Schrott- und zerspanenen Industrie bot sich immer wieder an, jedoch konnten geeignete Zusammensetzungen und Formgebungen für die verwendeten Ausgangsmaterialien nicht gefunden werden.The use of iron and steel deposits from the scrap and machined Industry offered itself again and again, but suitable compositions and Shapes for the raw materials used cannot be found.
Der Erfindungsgedanke geht davon aus, daß Stahischrott, Stahl- und Eisenspäne ein wirtschaftliches Ausgangsmaterial zur Erzeugung von Gußeisen sind, wenn Si lizium-und Kohlenstoffträger dem Einsatzmaterial so zugesetzt werden, daß sich die gewünschten Gußeisenqualitäten ergeben.The idea of the invention is based on the fact that steel scrap, steel and Iron filings are an economical raw material for the production of cast iron, when silicon and carbon carriers are added to the feedstock in such a way that the desired cast iron qualities result.
Verwendung von Eisen- und Stahlspänen zur Herstellung eines Ausgangsrnhstoffe zur Produktion handelsüblicher Gußeisensorten Zur Erzeugung der vergießbaren Gußeisenqualitäten sind neben der Zufügung geugneter Legierungselemente ggf. noch weitere schlackenbildende Komponente erforderlich Wenn auch davon ausgegangen werden kann, daß in den Elektro-Schmeiz-Aggreguien Schlacken von zweitrcngiger Bedeutung sind, so dürfte die Notwendigkeit der Schlakken außer Frage stehen.Use of iron and steel shavings for the production of a raw material for the production of commercially available cast iron grades for the production of cast iron grades In addition to the addition of suitable alloying elements, there may be other slag-forming elements Component required Even if it can be assumed that in the Elektro-Schmeiz-Aggreguien Slags are of secondary importance, so the need for slags is likely are out of the question.
Der Erfindungsgedanke besteht darin, die in der zerspanenen und Schrott-industrie anfallenden Späne so zu brikettieren, daß die Legierungselemente sowie die erforderlichen schlackenbildenden Elemente beigemischt sind, so daß die gewünschten Gußeisenqualitäten erreicht werden.The idea of the invention is to be found in the machining and scrap industries to briquette accruing chips so that the alloying elements as well as the required Slag-forming elements are added, so that the desired cast iron qualities can be achieved.
Patentansprüche: 1. Brikettierte Späne und Stahlschrott dadurch gekennzeichnet, daß die verwendeten Späne in der brikettierten Form Silizium und Kohlenstoff in den notwendigen Anteilen enthalten, z. B. in der Form von Siliziumkarbid.Claims: 1. Briquetted chips and steel scrap characterized in that that the chips used in the briquetted form silicon and carbon in contain the necessary proportions, e.g. B. in the form of silicon carbide.
2. Brikettierte Späne wie vor dadurch gekennzeichnet, daß die verwendeten Späne in der brikettierten Form Schlackenbildner vornehmlich Ca 0, Si 02, Al 03 enthalten.2. Briquetted chips as before, characterized in that the used Chips in the briquetted form Slag formers mainly Ca 0, Si 02, Al 03 contain.
3. Brikettierte Späne dadurch gekennzeichnet, daß die Briketts Silizium und Kohlenstofftröger in der Form von Siliziumkarbid und Schlackenbildner in der Form von Ca 0, Si 02 und Al 203 enthalten.3. Briquetted chips, characterized in that the briquettes are silicon and carbon carriers in the form of silicon carbide and slagging agents in the Form of Ca 0, Si 02 and Al 203 included.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702042034 DE2042034A1 (en) | 1970-08-25 | 1970-08-25 | Cast iron including ductile cast iron prodn - from steel scrap briquettes contg silicon and carbon |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702042034 DE2042034A1 (en) | 1970-08-25 | 1970-08-25 | Cast iron including ductile cast iron prodn - from steel scrap briquettes contg silicon and carbon |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2042034A1 true DE2042034A1 (en) | 1972-03-02 |
Family
ID=5780631
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19702042034 Pending DE2042034A1 (en) | 1970-08-25 | 1970-08-25 | Cast iron including ductile cast iron prodn - from steel scrap briquettes contg silicon and carbon |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2042034A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2348273A2 (en) * | 1973-08-03 | 1977-11-10 | Nl Industries Inc | COMPOSITION OF FERROUS METAL DEBRIS POROUS AND IMPREGNATED WITH RARE EARTHS, USEFUL FOR TREATING MELTED IRON |
FR2452525A1 (en) * | 1979-03-29 | 1980-10-24 | Frank & Schulte Gmbh | Cement-bonded alloy carrier briquette - for charging cupola furnace, contains carbon-rich ferro-manganese and silicon carbide |
DE2727896C2 (en) * | 1977-06-21 | 1984-08-23 | Keßl, Werner, 8481 Bärnwinkel | Use of silicon carbide compacts as a cupola additive |
-
1970
- 1970-08-25 DE DE19702042034 patent/DE2042034A1/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2348273A2 (en) * | 1973-08-03 | 1977-11-10 | Nl Industries Inc | COMPOSITION OF FERROUS METAL DEBRIS POROUS AND IMPREGNATED WITH RARE EARTHS, USEFUL FOR TREATING MELTED IRON |
DE2727896C2 (en) * | 1977-06-21 | 1984-08-23 | Keßl, Werner, 8481 Bärnwinkel | Use of silicon carbide compacts as a cupola additive |
FR2452525A1 (en) * | 1979-03-29 | 1980-10-24 | Frank & Schulte Gmbh | Cement-bonded alloy carrier briquette - for charging cupola furnace, contains carbon-rich ferro-manganese and silicon carbide |
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