DE339496C - Melting process and furnace system for metals a. Like., In particular for direct iron production from ores - Google Patents
Melting process and furnace system for metals a. Like., In particular for direct iron production from oresInfo
- Publication number
- DE339496C DE339496C DE1919339496D DE339496DD DE339496C DE 339496 C DE339496 C DE 339496C DE 1919339496 D DE1919339496 D DE 1919339496D DE 339496D D DE339496D D DE 339496DD DE 339496 C DE339496 C DE 339496C
- Authority
- DE
- Germany
- Prior art keywords
- melting
- over
- gas
- furnace
- melting process
- 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
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 10
- 239000002184 metal Substances 0.000 title claims description 8
- 229910052751 metal Inorganic materials 0.000 title claims description 8
- 238000010309 melting process Methods 0.000 title claims description 6
- 229910052742 iron Inorganic materials 0.000 title claims description 5
- 150000002739 metals Chemical class 0.000 title claims description 4
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 239000007789 gas Substances 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 239000000289 melt material Substances 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims 2
- 239000000567 combustion gas Substances 0.000 claims 1
- 230000004927 fusion Effects 0.000 claims 1
- 239000012768 molten material Substances 0.000 claims 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910001296 Malleable iron Inorganic materials 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 229910000754 Wrought iron Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type furnaces
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
Schmelzverfahren und Ofenanlage für Metalle u. dgl., insbesondere zur direkten Eisenerzeugung aus Erzen. Vorliegende Erfindung bezweckt ein Verfahren zum Schmelzen von Metallen o. dgl., ohne daß das zu schmelzende Gut mit den Heizflammen in Berührung kommt und besteht darin, daß zwecks Vermeidung einer direkten Berührung der Heizflamme mit dem zu schmelzenden Gut diese durch eine strahlendurchlässige Wand räumlich getrennt werden. Hierbei wird durch die Flamme das über dem Schmelzherd ausgebreitete Gewölbe erhitzt und so die Wärme durch Strahlung auf das Schmelzgut übertragen. Diese Methode gestattet nun, über das Schmelzgut gleichzeitig ein anderes, für Schmelz- oder irgendwelche erstrebte chemische Prozesse geeignetes Gas zu leiten, so daß neben der Wärmeübertragung gleichzeitig unabhängig hiervon, chemische Prozesse eingeleitet werden können. Eine besonders wirtschaftliche Anwendungsmöglichkeit dieses Prinzips ist (wie folgend beschrieben) die direkte Gewinnung von Schmiedeeisen aus Erzen.Melting process and furnace equipment for metals and the like, in particular for direct iron production from ores. The present invention aims at a method for melting metals or the like, without the material to be melted with the heating flames comes into contact and consists in that in order to avoid direct contact the heating flame with the material to be melted through a radiolucent Be spatially separated from the wall. Here, the flame above the melting hearth is used Spread out vaults are heated and so the heat is transferred to the melted material by radiation transfer. This method now allows another, to conduct gas suitable for melting or any desired chemical processes, so that in addition to the heat transfer at the same time, independent of it, chemical processes can be initiated. A particularly economical application this principle is (as described below) the direct extraction of wrought iron from ores.
Leitet man vorgewärmtes Generatorgas zunächst urverbrannt über den Schmelzherd, führt dann erst zwecks Verbrennung die vorgewärmte Luft zu und schließlich die Feuergase in der vorerwähnten Weise zwischen der ,durchlässigen Wand und dem Ofengewölbe hindurch, so wirken bekanntlich das Kohlenoxyd und der Wasserstoff des Generatorgases ;auf das Schmelzgut reduzierend. Dieses Verfahren gestattet also eine direkte Gewinnung des schmiedbaren Eisens aus den Eisenerzen unter Umgehung des Hochofenprozesses. Soll jedoch Roheisen nach diesem Verfahren erzeugt werden, so ist natürlich nur nötig, die gewünschten Zusätze dem einzubringenden Erzgut beizumengen. An diesen Schmelzprozeß kann sich gleichzeitig ein Frischprozeß anschließen, indem man nach dem erfolgten Schmelzen der Erze statt des reduzierenden Generatorgases jetzt die vorgewärmte Verbrennungsluft vor der Verbrennung über den Schmelzherd streichen läßt (Puddelprozeß).If preheated generator gas is initially burned through the Melting hearth, then only feeds in the preheated air for the purpose of combustion and finally the fire gases in the aforementioned manner between the permeable wall and the Through the furnace vault, as is well known, the carbon dioxide and the hydrogen of the act Generator gas; reducing to the melt material. So this procedure allows a direct extraction of the malleable iron from the iron ores with bypassing of the blast furnace process. However, if pig iron is to be produced using this process, so of course it is only necessary to add the desired additives to the ore to be introduced. This melting process can be followed by a fresh process at the same time by after the ores have been melted instead of the reducing generator gas now the preheated combustion air before combustion over the melting hearth can be deleted (puddling process).
Eine andere Ausführungsmöglichkeit dieses Prinzips besteht darin, daß man einen kontinuierlichen Betrieb einrichtet, indem man etwa den Schmelzherd als schwachgeneigte oder abgestufte Fläche ausbildet, das Schmelzgut dauernd einbringt und das kontinuierlich abschmelzende Metall über eine weitere, ähnlich ausgestaltete Fläche fließen läßt, wobei man über den ersteren (Schmelz-) Herd die vorgewärmten, reduzierenden Generatorgase und über den letzteren (Frischherd) die vorgewärmte Luft streichen läßt, und zwar derart, daß sich Gas und Luft an der Übergangsstelle der beiden Herde zu einem Verbrennungsgemisch vereinigen. Die Feuergase können nun entweder ausschließlich in der beschriebenen «'eise über den Schmelzherd geleitet werden oder aber man zweigt einen Teil der Feuergase nach dem Frischherd ab, um ein vorzeitiges Erstarren des dem Frischprozeß unterworfenen Eisens zu vermeiden. Hierbei beheizt es den Frischherd in derselben Weise und in der gleichen Anordnung durch Strahlung wie beim Schmelzherd. Unwesentlich ist hierbei, ob die beiden Herde neben-oder übereinander angeordnet werden.Another possible way of implementing this principle is to that you set up a continuous operation by about the melting hearth designed as a slightly inclined or stepped surface that continuously brings in the melting material and the continuously melting metal via another, similarly designed Surface, whereby the preheated, reducing generator gases and via the latter (fresh stove) the preheated Air can be deleted, in such a way that gas and air at the transition point combine the two stoves into a combustion mixture. The fire gases can now either passed over the furnace exclusively in the manner described or you divert part of the fire gases to the fresh stove to avoid premature solidification of the iron subjected to the fresh process. It heats the fresh stove in the same way and in the same arrangement by radiation as with the melting hearth. Insignificant is here whether the two stoves are placed next to or on top of each other.
Claims (5)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE339496T | 1919-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE339496C true DE339496C (en) | 1921-07-26 |
Family
ID=6223694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1919339496D Expired DE339496C (en) | 1919-07-19 | 1919-07-19 | Melting process and furnace system for metals a. Like., In particular for direct iron production from ores |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE339496C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE952819C (en) * | 1949-03-15 | 1956-11-22 | E H Dr Rer Techn H C Heinrich | Process for gasifying coal in a shaft furnace while extracting iron |
-
1919
- 1919-07-19 DE DE1919339496D patent/DE339496C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE952819C (en) * | 1949-03-15 | 1956-11-22 | E H Dr Rer Techn H C Heinrich | Process for gasifying coal in a shaft furnace while extracting iron |
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