CN113106182A - Hydrogen-based flash iron-making device based on improved blast furnace - Google Patents
Hydrogen-based flash iron-making device based on improved blast furnace Download PDFInfo
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- CN113106182A CN113106182A CN202110553421.7A CN202110553421A CN113106182A CN 113106182 A CN113106182 A CN 113106182A CN 202110553421 A CN202110553421 A CN 202110553421A CN 113106182 A CN113106182 A CN 113106182A
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- iron
- blast furnace
- furnace
- hydrogen
- flash
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0073—Selection or treatment of the reducing gases
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
- C21B13/0026—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide in the flame of a burner or a hot gas stream
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/006—Starting from ores containing non ferrous metallic oxides
Abstract
The invention relates to a hydrogen-based flash iron-making device based on a modified blast furnace, which comprises a melting tank, wherein an iron-flashing furnace is arranged on the upper surface of the melting tank, the iron-flashing furnace and the melting tank are of an integral structure, at least two blast furnace original spray guns are arranged on the side wall of the melting tank, iron ore sand spray guns and an outer pipe are respectively arranged on the upper surface and the side wall of the melting tank, the outer pipe is butted with a drying pre-reduction tower, and a hydrogen production device and an oxygen generator are arranged on the outer side of the iron-flashing furnace. This hydrogen base flash ironmaking device based on reform transform blast furnace sends into the flash iron stove with hydrogen in, likepowder iron ore sand moves in the flash iron stove with hydrogen in opposite directions, iron oxide in the iron ore sand is reduced into metallic iron rapidly in several seconds, thereby accomplish the separation of sediment and iron, this mode is not only smelting efficient, and the in-process can realize zero carbon row, thereby the effectual current blast furnace ironmaking device of having solved iron-making efficiency when using is comparatively general, and the not enough problem of practicality.
Description
Technical Field
The invention relates to the technical field of steel industry and mechanical casting, in particular to a hydrogen-based flash iron-making device based on a modified blast furnace.
Background
The blast furnace is made up of steel plate as shell, refractory brick lining is built in the shell, the body of the blast furnace is divided into five parts from top to bottom, namely furnace throat, furnace body, furnace waist, furnace belly and furnace hearth.
Blast furnaces are widely applied at present, the efficiency of the blast furnaces is relatively common when the blast furnaces are used for iron making, the investment of iron making is relatively large, and the efficiency of pig iron smelting is affected along with the large carbon emission, so that the social requirement is difficult to meet, and therefore, a hydrogen-based flash iron making device based on the improvement of the blast furnaces is provided to solve the problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a hydrogen-based flash iron-making device based on the improved blast furnace, which has the advantages of high iron-making efficiency, good practicability and the like, and solves the problems of relatively common iron-making efficiency and insufficient practicability of the existing blast furnace iron-making device in use.
In order to achieve the purpose, the invention provides the following technical scheme: hydrogen base flash ironmaking device based on reform transform blast furnace, including the melting pond, the upper surface in melting pond is provided with the iron-smelting furnace, and iron-smelting furnace and melting pond structure as an organic whole, be provided with the former spray gun of blast furnace that quantity is no less than two on the lateral wall in melting pond, be provided with iron ore sand spray gun and outer tube on the upper surface in melting pond and the lateral wall respectively, the outer tube docks with dry pre-reduction tower, the outside of iron-smelting furnace is equipped with hydrogen plant and oxygenerator.
Furthermore, the number of the blast furnace original spray guns is not less than two, the blast furnace original spray guns are all positioned on the opposite side walls of the melting pool and the iron-melting furnace, and are distributed in an opposite state.
Furthermore, the other side of the original blast furnace spray gun far away from the melting pool is provided with a conveying pipe, and one end of the conveying pipe far away from the original blast furnace spray gun is in butt joint with an air blower.
Further, an embedded scraper conveyor is arranged on the other side, far away from the outer pipe, of the drying pre-reduction tower.
Further, an outlet is formed in the drying and pre-reducing tower.
Furthermore, the output ends of the hydrogen production device and the oxygen generator are provided with butt-joint pipelines.
Further, the other ends of the butt joint pipelines far away from the hydrogen production device and the oxygen generator are in butt joint with the air blower.
Further, the smelting product of the iron flash furnace is molten pig iron.
Further, the smelting materials processed in the iron flash furnace comprise laterite nickel ore, gas ash or non-ferrous metal oxidized ore.
Further, the cupola furnace uses fuel or mixed fuel.
Compared with the prior art, the technical scheme of the application has the following beneficial effects:
this hydrogen base flash ironmaking device based on reform transform blast furnace, through the hydrogen by hydrogen manufacturing installation output, and send into in the iron flash stove by the air-blower, when likepowder iron ore sand drops into the iron flash stove by iron ore sand spray gun department, the likepowder iron ore sand that has very big specific surface area and is the state of floating moves in the iron flash stove with hydrogen in opposite directions, form extremely superior chemical kinetics condition, iron oxide in the iron ore sand is reduced into metallic iron rapidly in several seconds, fall into the melting pond of iron flash stove lower surface afterwards, thereby accomplish the separation of finished slag and iron, this mode is not only smelting efficient, and zero carbon row can be realized to the in-process, thereby the effectual current blast furnace ironmaking device of having solved iron-making efficiency when using is comparatively general, and the not enough problem of practicality.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic flow diagram of the apparatus of the present invention;
FIG. 3 is a schematic diagram of the working steps of the present invention.
In the figure: 1 melting pool, 2 iron flash furnace, 3 blast furnace original spray gun, 4 iron ore sand spray gun, 5 outer pipe, 6 drying pre-reducing tower, 7 buried scraper conveyer, 8 outlet, 9 blower, 10 hydrogen production device, 11 oxygen generator, 12 butt-joint pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the hydrogen-based flash ironmaking apparatus based on a modified blast furnace in the present embodiment includes a melting tank 1, an iron-melting furnace 2 is fixedly installed on an upper surface of the melting tank 1, the iron-melting furnace 2 is a blast furnace type iron-melting furnace, and a blast furnace original spray gun 3 is movably installed at a connection position of the blast furnace type iron-melting furnace and the melting tank 1.
Wherein, the number of the original blast furnace spray gun 3 is not less than two, and one end fixedly connected with conveying pipe which is far away from the melting pool 1, and the other end of the conveying pipe which is far away from the original blast furnace spray gun 3 is butted with the blower 9.
The quantity of conveyer pipe equals with the former spray gun 3's of blast furnace quantity, and its output butt joint with air-blower 9, and the last fixed surface of sudden strain of a muscle stove 2 is connected with iron ore sand spray gun 4, and two are no less than to this iron ore sand spray gun 4 quantity.
Iron ore sand spray gun 4 in this embodiment is used for spraying iron ore sand to in the iron flash furnace 2, and the outside fixedly connected with of iron flash furnace 2 rather than the outer tube 5 of inside intercommunication, the export of this outer tube 5 is down, and this export docks with the import of dry pre-reduction tower 6.
It should be noted that, in practical use, a sealing ring or other existing sealing structure may be fixedly installed at the joint of the outer pipe 5 and the drying pre-reduction tower 6, so as to ensure the sealing safety of the joint, the buried scraper conveyor 7 is movably installed on the lower surface of the drying pre-reduction tower 6, and the outlet 8 is opened on the side wall of the drying pre-reduction tower 6.
In order to realize the functions of flash iron making and good reliability, the other end of the air blower 9 far away from the original blast furnace spray gun 3 in the embodiment is provided with a hydrogen production device 10 and an oxygen generator 11, meanwhile, the output ends of the hydrogen production device 10 and the oxygen generator 11 are fixedly connected with a butt joint pipeline 12, and the other end of the butt joint pipeline 12 far away from the butt joint pipeline is fixedly connected with the input end of the air blower 9.
The hydrogen production device 10 and the oxygen generator 11 are conventional industrial devices known in the prior art, and detailed descriptions of the specific structure and the working principle are omitted.
The external pipeline is movably installed at the outlet 8 in the embodiment and is connected with the input end of the air blower 9, so that the hydrogen-rich flue gas in the drying pre-reduction tower 6 can return to the iron-melting furnace 2 through the external pipeline and the air blower 9.
It should be noted that hydrogen produced by the hydrogen production apparatus 10 is sent into the iron flash furnace 2 through the blower 9, and at the same time, the dried and pre-reduced powdered iron ore is fed from the iron ore spray gun 4 on the iron flash furnace 2, and the powdered iron ore having a large specific surface area and in a floating state moves in the iron flash furnace 2 in a direction opposite to the hydrogen, so as to form an extremely superior chemical kinetic condition, and iron oxide in the iron ore is rapidly reduced into metallic iron within several seconds, and then falls into the melting tank 1 on the lower surface of the iron flash furnace 2, thereby completing the separation of slag and iron.
It is understood that the electric control equipment in the device is shared by electricity/ethylene, and the processed product is molten pig iron, while the molten pool 1 below the blast furnace 2 is injected with hydrogen, the processed product can comprise laterite nickel ore, gas ash, nonferrous metal oxidized ore and various industrial wastes, and the device can use various other fuels or mixed fuels.
A second embodiment of a hydrogen-based flash ironmaking apparatus based on a modified blast furnace, comprising:
2 selection of iron flash furnace of 2000m3And the lower surface of the melting tank is fixedly provided with a melting tank 1, and:
s1: the hydrogen produced by the hydrogen production device 10 is sent into the iron-flash furnace 2 by a blower 9.
S2: the iron ore spray gun 4 sprays the dried and pre-reduced powdery iron ore into the iron flash furnace 2, the powdery iron ore moves in the iron flash furnace 2 in the opposite direction to the hydrogen, and the iron oxide in the iron ore is rapidly reduced into metallic iron within a few seconds.
S3: the metallic iron falls into the melting and separating pool 1 on the lower surface of the iron flash furnace 2, slag and iron are separated, and separated and discharged after the separation is finished.
A third embodiment of the hydrogen-based flash ironmaking apparatus based on the modified blast furnace comprises:
selecting 5000m for iron flash furnace 23And the lower surface of the melting tank is fixedly provided with a melting tank 1, and:
s1: the hydrogen produced by the hydrogen production device 10 is sent into the iron-flash furnace 2 by a blower 9.
S2: the iron ore spray gun 4 sprays the dried and pre-reduced powdery iron ore into the iron flash furnace 2, the powdery iron ore moves in the iron flash furnace 2 in the opposite direction to the hydrogen, and the iron oxide in the iron ore is rapidly reduced into metallic iron within a few seconds.
S3: the metallic iron falls into the melting and separating pool 1 on the lower surface of the iron flash furnace 2, slag and iron are separated, and separated and discharged after the separation is finished.
The working principle of the above embodiment is as follows:
hydrogen produced by the hydrogen production device 10 is sent into the iron flash furnace 2 by the blower 9, when the powdery iron ore sand is thrown into the iron flash furnace 2 from the iron ore sand spray gun 4, the powdery iron ore sand which has a large specific surface area and is in a floating state moves in the iron flash furnace 2 in opposite directions with the hydrogen to form an extremely superior chemical kinetic condition, iron oxide in the iron ore sand is rapidly reduced into metallic iron within several seconds and then falls into the melting pool 1 on the lower surface of the iron flash furnace 2, and thus, the separation of slag and iron is completed.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. Hydrogen base flash ironmaking device based on reform transform blast furnace, its characterized in that:
the melting and separating device comprises a melting and separating pool (1), wherein an iron flash furnace (2) is arranged on the upper surface of the melting and separating pool (1), and the iron flash furnace (2) and the melting and separating pool (1) are of an integrated structure;
the side wall of the melting tank (1) is provided with at least two blast furnace original spray guns (3), the upper surface and the side wall of the melting tank (1) are respectively provided with an iron ore sand spray gun (4) and an outer pipe (5), and the outer pipe (5) is butted with a drying pre-reduction tower (6);
a hydrogen production device (10) and an oxygen generator (11) are arranged on the outer side of the iron flash furnace (2).
2. The improved blast furnace-based hydrogen-based flash ironmaking device according to claim 1, characterized in that: the number is no less than two the original blast furnace spray guns (3) are all positioned on the opposite side walls of the melting pool (1) and the iron-melting furnace (2), and are distributed in opposite states.
3. The improved blast furnace-based hydrogen-based flash ironmaking device according to claim 2, characterized in that: the other side of the original blast furnace spray gun (3) far away from the melting tank (1) is provided with a conveying pipe, and one end of the conveying pipe far away from the original blast furnace spray gun (3) is in butt joint with an air blower (9).
4. The improved blast furnace-based hydrogen-based flash ironmaking device according to claim 1, characterized in that: and an embedded scraper conveyor (7) is arranged on the other side of the drying pre-reduction tower (6) far away from the outer pipe (5).
5. The improved blast furnace-based hydrogen-based flash ironmaking device according to claim 1, characterized in that: an outlet (8) is arranged on the drying pre-reduction tower (6).
6. The improved blast furnace-based hydrogen-based flash ironmaking device according to claim 1, characterized in that: the output ends of the hydrogen production device (10) and the oxygen generator (11) are provided with butt-joint pipelines (12).
7. The improved blast furnace-based hydrogen-based flash ironmaking device according to claim 6, characterized in that: the other end of the butt joint pipeline (12) far away from the hydrogen production device (10) and the oxygen generator (11) is in butt joint with the blower (9).
8. The improved blast furnace-based hydrogen-based flash ironmaking device according to claim 1, characterized in that: the smelting product of the iron flash furnace (2) is molten pig iron.
9. The improved blast furnace-based hydrogen-based flash ironmaking device according to claim 1, characterized in that: the smelting materials processed in the iron flash furnace (2) comprise laterite nickel ore, gas ash or non-ferrous metal oxidized ore.
10. The improved blast furnace-based hydrogen-based flash ironmaking device according to claim 1, characterized in that: the cupola furnace (2) uses fuel or a mixed fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110553421.7A CN113106182A (en) | 2021-05-20 | 2021-05-20 | Hydrogen-based flash iron-making device based on improved blast furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110553421.7A CN113106182A (en) | 2021-05-20 | 2021-05-20 | Hydrogen-based flash iron-making device based on improved blast furnace |
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| CN113106182A true CN113106182A (en) | 2021-07-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114410874A (en) * | 2022-01-14 | 2022-04-29 | 山东闪炼丰氢科技发展有限公司 | Improved blast furnace for flash smelting and use method |
| WO2023151242A1 (en) * | 2022-02-11 | 2023-08-17 | 中钢设备有限公司 | Metal smelting device and steelmaking production line |
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2021
- 2021-05-20 CN CN202110553421.7A patent/CN113106182A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114410874A (en) * | 2022-01-14 | 2022-04-29 | 山东闪炼丰氢科技发展有限公司 | Improved blast furnace for flash smelting and use method |
| WO2023151242A1 (en) * | 2022-02-11 | 2023-08-17 | 中钢设备有限公司 | Metal smelting device and steelmaking production line |
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