DE857812C - Process for reducing iron ore in a rotary kiln - Google Patents
Process for reducing iron ore in a rotary kilnInfo
- Publication number
- DE857812C DE857812C DEK8301A DEK0008301A DE857812C DE 857812 C DE857812 C DE 857812C DE K8301 A DEK8301 A DE K8301A DE K0008301 A DEK0008301 A DE K0008301A DE 857812 C DE857812 C DE 857812C
- Authority
- DE
- Germany
- Prior art keywords
- rotary kiln
- liquid fuel
- iron ore
- carbon
- solid
- 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
- 238000000034 method Methods 0.000 title claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 8
- 229910052742 iron Inorganic materials 0.000 title claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 239000000446 fuel Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000004449 solid propellant Substances 0.000 description 2
- 239000002641 tar oil Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000000126 substance Substances 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
- C21B13/08—Making spongy iron or liquid steel, by direct processes in rotary furnaces
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Description
Verfahren zur Reduktion von Eisenerz im Drehrohrofen Die Erfindung bezieht sich auf Verfahren, bei denen Eisenerze und andere eisenhaltige Stoffe, die gegebenenfalls auch andere gewinnbare Elemente, wie Ni, enthalten können, im Drehrohrofen unter Zusatz von festem Kohlenstoff reduziert werden.Process for reducing iron ore in a rotary kiln The invention refers to processes in which iron ores and other ferrous substances, which may also contain other recoverable elements such as Ni, im Rotary kiln can be reduced with the addition of solid carbon.
Bei diesen Verfahren, den sogenannten Rennverfahren, wird dem Erz fester Kohlenstoff als Reduktionsmittel zugegeben. Die für die Erhitzung der gesamten Beschickung erforderliche Wärme wird durch einen am Austragsende des Drehrohrofens angeordneten Brenner erzeugt. Hierbei können feste, flüssige oder gasförmige Brennstoffe, z. B. Kohlen- oder Koksstaub, Teeröl, biazut oder übliche Heizgase, verwendet werden. Für den ReduktionsprozeB hat man aber bisher auf die Verwendung fester Brennstoffe nicht verzichtet. Um das Verfahren auch dann durchführen zu können, wenn nur flüssiger Brennstoff zur Verfügung steht, könnte man daran denken, diesen in einer besonderen Anlage aufzuspalten in leichtsiedende Öle und Gase zur Beheizung des Reduktionsofens und festen Kohlenstoff, der zur Reduktion benutzt wird. Ein solches Verfahren wäre aber unwirtschaftlich.In this process, the so-called racing process, the ore solid carbon added as a reducing agent. The one for heating the whole Charging required heat is provided by a at the discharge end of the rotary kiln arranged burner generated. Solid, liquid or gaseous fuels, z. B. coal or coke dust, tar oil, biazut or conventional heating gases can be used. For the reduction process, however, one has so far relied on the use of solid fuels not waived. In order to be able to carry out the procedure even if only more fluently If fuel is available, one might think of it in a special Split the system into low-boiling oils and gases for heating the reduction furnace and solid carbon used for reduction. Such a procedure would be but uneconomical.
Die Erfindung bezweckt, die Durchführung der Reduktion von Erzen nach den angegebenen Verfahren auch dann auf wirtschaftliche Weise zu ermöglichen, wenn fester Brennstoff für die Reduktion nicht oder nicht in genügendem Umfang zur Verfügung steht. Dieser Zweck wird nach der Erfindung dadurch erreicht, daß der Reduktionskohlenstoff in Form von flüssigem Brennstoff zugeführt wird, der im Reduktionsofen in flüchtige Bestandteile und festen Kohlenstoff gespalten wird und der letztere als Reduktionsmittel dient.The invention aims to carry out the reduction of ores according to to enable the specified procedures to be carried out in an economical manner, if solid fuel for the reduction is not available or not available in sufficient quantities stands. This purpose is achieved according to the invention in that the reducing carbon in the form of liquid fuel is supplied, which in the reduction furnace in volatile Components and solid carbon is split and the latter as a reducing agent serves.
Als flüssige Brennstoffe können nach der Erfindung beispielsweise ?Mineralöl, Teeröl oder Mazut verwendet werden.As liquid fuels according to the invention, for example • Mineral oil, tar oil or mazut can be used.
Die Zuführung des flüssigen Brennstoffes erfolgt zweckmäßig so, daß er in innige Berührung mit dem zu reduzierenden glühenden Erz kommt. Die Zuführungsstelle wird zweckmäßig so gewählt, daß die Temperatur des Ofens an der Zuführungsstelle zur Aufspaltung des flüssigen Brennstoffes bereits hoch genug ist. Bei der sofort eintretenden Aufspaltung werden einerseits Gase und leichtsiedende Öle und andererseits fester Kohlenstoff gebildet. Die gebildeten flüchtigen Bestandteile können entweder zur weiteren Beheizung des Reduktionsofens dienen, oder diese Bestandteile bzw. die durch ihre Verbrennung erzeugte Wärme können anderen Zwecken nutzbar gemacht werden.The supply of the liquid fuel is expediently carried out in such a way that he comes into intimate contact with the glowing ore to be reduced. The feed point is expediently chosen so that the temperature of the furnace at the feed point is already high enough to break down the liquid fuel. At the instant Occurring splitting are on the one hand gases and low-boiling oils and on the other hand solid carbon formed. The volatile components formed can either serve to further heat the reduction furnace, or these components or the heat generated by their combustion can be used for other purposes will.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK8301A DE857812C (en) | 1950-12-06 | 1950-12-06 | Process for reducing iron ore in a rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK8301A DE857812C (en) | 1950-12-06 | 1950-12-06 | Process for reducing iron ore in a rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE857812C true DE857812C (en) | 1952-12-01 |
Family
ID=7211898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEK8301A Expired DE857812C (en) | 1950-12-06 | 1950-12-06 | Process for reducing iron ore in a rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE857812C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1226126B (en) * | 1963-06-28 | 1966-10-06 | Rheinstahl Ind Planung G M B H | Process for reducing iron ores in a rotary kiln with liquid or gaseous hydrocarbons and a device for carrying out this process |
| DE1266321B (en) * | 1956-07-30 | 1968-04-18 | R N Corp | Process for reducing iron ore |
-
1950
- 1950-12-06 DE DEK8301A patent/DE857812C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1266321B (en) * | 1956-07-30 | 1968-04-18 | R N Corp | Process for reducing iron ore |
| DE1226126B (en) * | 1963-06-28 | 1966-10-06 | Rheinstahl Ind Planung G M B H | Process for reducing iron ores in a rotary kiln with liquid or gaseous hydrocarbons and a device for carrying out this process |
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