CN115679100A - Directional reinforced flash metallurgy method - Google Patents
Directional reinforced flash metallurgy method Download PDFInfo
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- CN115679100A CN115679100A CN202211410722.5A CN202211410722A CN115679100A CN 115679100 A CN115679100 A CN 115679100A CN 202211410722 A CN202211410722 A CN 202211410722A CN 115679100 A CN115679100 A CN 115679100A
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
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Abstract
The invention relates to a flash metallurgy method for directionally strengthening steel and nonferrous metals, which mainly comprises a reaction tower and a melting pool for directionally strengthening, and comprises the following steps: 1) One or more fuel spray guns and reducing agent or oxidizing agent spray guns are arranged along the side walls of different descending heights of the reaction tower according to the temperature and the atmosphere strengthening requirements required by chemical reaction, and the oriented high-temperature, high-reduction degree or high-oxidation degree atmosphere is formed in the reaction tower by adjusting the process parameters of the spray guns; 2) And introducing powdery dry ore at a high speed through one or more ore spray guns at the top of the directional strengthening reaction tower, so that the powdery dry ore is dispersed in the directional strengthening atmosphere in the reaction tower in a state of a great specific surface area. The directional strengthening flash metallurgy method can treat complex ores of steel and nonferrous metals, laterite-nickel ores, gas ash, various industrial wastes and the like, and has the advantages of high efficiency, low investment, low energy consumption and the like.
Description
Technical Field
The invention relates to the technical fields of steel industry, nonferrous metal industry, mechanical casting and carbon emission reduction, in particular to a directional reinforced flash metallurgy method.
Background
Flash smelting is an advanced smelting technology developed recently, has low energy consumption and large scale, has the advantages of good labor condition, high automation level and high labor productivity, has metal recovery rate even higher than that of the traditional zinc hydrometallurgy process, can treat lead-zinc mixed concentrate which is difficult to sort, and simultaneously produces lead and zinc, overcomes the defect of indirect heating which cannot be overcome by the traditional zinc hydrometallurgy.
At present, when flash metallurgy is used for metallurgy, gold smelting is carried out at high temperature, however, the method cannot form data change according to internal temperature when smelting is carried out, so that the oxidation degree atmosphere cannot be enhanced, the degree and quality of metal smelting cannot be improved, and the waste of energy sources cannot be reduced.
Disclosure of Invention
In order to further expand the flash metallurgy technology and apply the flash metallurgy technology to the smelting of other metals in the steel industry and the like, the invention provides a directional reinforced flash metallurgy method which has the advantages of high efficiency, less investment, low energy consumption and the like.
The invention provides a directional reinforced flash metallurgy method, which comprises the following steps:
1) One or more fuel spray guns and reducing agent or oxidizing agent spray guns are arranged along the side walls of different descending heights of the reaction tower according to the temperature and the atmosphere strengthening requirements required by chemical reaction, and the oriented high-temperature, high-reduction degree or high-oxidation degree atmosphere is formed in the reaction tower by adjusting the process parameters of the spray guns;
2) Powdery dry ore is led in at a high speed through one or more ore spray guns at the top of the directional reinforced reaction tower, so that the powdery dry ore is dispersed in a directional reinforced atmosphere in the reaction tower in a state of a large specific surface area, the main smelting reaction is completed within a few seconds, and a product falls into the melting pool;
3) One or more fuel spray guns and reducing agent or oxidizing agent spray guns are arranged on the side wall of the melting pool according to the strengthening requirements of the temperature and the atmosphere required by the chemical reaction so as to finish the final chemical reaction process.
Further, the fuel may be any fuel such as natural gas, hydrogen gas, coke oven gas, etc.
Further, the reducing agent may be hydrogen or carbon monoxide, and the oxidizing agent may be air or oxygen.
Further, the ore spray gun, the fuel spray gun, the reducing agent spray gun or the oxidizing agent spray gun can adopt a conventional spray gun or a plasma spray gun and the like.
Furthermore, in the directional enhanced flash metallurgy method, the process heat compensation mode can adopt a heat compensation mode of preheating an oxidant or a reducing agent, heating an electrode and the like besides the heat compensation mode of the fuel spray gun.
Furthermore, the directional reinforced flash metallurgy method can treat complex ores of steel and nonferrous metals, laterite-nickel ores, gas ash, various industrial wastes and the like.
Compared with the prior flash metallurgy technology, the directional reinforced flash metallurgy method provided by the invention has the beneficial effects that the oxidation degree atmosphere in the reaction kettle is effectively improved by forming data change on the temperature in the reaction kettle, the efficiency of metal smelting is improved by improving the oxidation degree atmosphere, metal enters high-speed smelting through high material spraying of a spray gun during smelting, the smelting is rapidly completed, the efficiency is high, the investment is low, the energy consumption is low, and the like.
Drawings
FIG. 1 is a flow chart of a directional enhanced flash metallurgy method according to the present invention.
In the figure: the system comprises a reaction tower (100), a melting pool (200), an ore spray gun (10), a fuel spray gun (20) and a reducing agent or oxidizing agent spray gun (30).
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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, a method for directionally strengthening flash metallurgy includes the following steps:
1) One or more fuel spray guns 20 and reducing agent or oxidant spray guns 30 are arranged along the side walls of different descending heights of the reaction tower 100 according to the temperature and atmosphere strengthening requirements required by chemical reaction, and the process parameters of the spray guns are adjusted to form a directional high-temperature, high-reduction degree or high-oxidation degree atmosphere in the reaction tower;
2) Powdery dry ore is introduced at a high speed through one or more ore spray guns 10 at the top of the directional strengthening reaction tower, so that the powdery dry ore is dispersed in the directional strengthening atmosphere in the reaction tower in a state of a great specific surface area, the main smelting reaction is completed within a plurality of seconds, and the product falls into a melting pool 200;
3) One or more fuel lances 20 and reductant or oxidant lances 30 are also disposed on the side walls of the melting tank 200 to complete the final chemical reaction process, again depending on the temperature and atmosphere intensification requirements required for the chemical reaction.
Wherein, the fuel can adopt any fuel such as natural gas, hydrogen, coke oven gas and the like;
the reducing agent can be hydrogen or carbon monoxide, and the oxidizing agent can be air or oxygen.
Wherein, the ore sand spray gun 10, the fuel spray gun 20 and the reducing agent or oxidant spray gun 30 can adopt a conventional spray gun or a plasma spray gun and the like;
in the directional strengthening flash metallurgy method, the process heat compensation can adopt a heat compensation mode of preheating an oxidant or a reducing agent, heating an electrode and the like besides a heat compensation mode of a fuel spray gun 20;
wherein, the directional reinforced flash metallurgy method can treat complex ores of steel and nonferrous metals, laterite nickel ores, gas ash, various industrial wastes and the like.
Example one, the reaction tower of the directional reinforced flash metallurgical furnace has an inner diameter of 6.35m and a height of 10m, and treats iron ore with an iron grade of 65% to produce 52.7 million tons of molten pig iron annually.
In the second embodiment, the reaction tower of the directional reinforced flash metallurgical furnace has an inner diameter of 13.5m and a height of 12m, and treats iron ore with an iron grade of 65 percent to produce 237.1 million tons of molten pig iron annually.
In the third example, the reaction tower of the directional reinforced flash metallurgical furnace has the inner diameter of 13.5m and the height of 10m, treats iron ore sand with the iron content of 56 percent, and produces 211.3 million tons of molten pig iron annually.
In the fourth embodiment, the internal diameter of the reaction tower of the directional reinforced flash metallurgical furnace is 5m, the height of the reaction tower is 8m, laterite nickel ore with iron grade of 21% is processed, and 10.3 million tons of molten ferronickel are produced annually.
When the device is used, the reducing agent adopts hydrogen or mixed gas taking the hydrogen as a main component, the ore sand spray gun, the fuel spray gun, the reducing agent or the oxidant spray gun adopts a conventional spray gun, the fuel adopts natural gas, and the process heat supplement adopts a heat supplement mode of the fuel spray gun and the preheating reducing agent.
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 phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like 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.
The invention has the beneficial effects that: this directional reinforcement flash metallurgy method, through the change to the inside temperature formation data of reation kettle, the inside oxidation degree atmosphere of effectual improvement reation kettle improves the efficiency that this metal was smelted through improving the oxidation degree atmosphere, highly spouts the material through the spray gun when smelting for during metal enters into fast-speed smelting, quick completion is smelted, has profitable effect such as efficient, the small investment, the energy consumption hangs down.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various 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 (6)
1. A method of directionally strengthening flash metallurgy, comprising the steps of:
1) One or more fuel spray guns and reducing agent or oxidant spray guns are arranged along the side walls of the reaction tower with different descending heights according to the temperature and atmosphere strengthening requirements required by chemical reaction, and the process parameters of the spray guns are adjusted to form a directional high-temperature, high-reduction degree or high-oxidation degree atmosphere in the reaction tower;
2) Powdery dry ore is led in at a high speed through one or more ore spray guns at the top of the directional reinforced reaction tower, so that the powdery dry ore is dispersed in a directional reinforced atmosphere in the reaction tower in a state of a large specific surface area, the main smelting reaction is completed within a few seconds, and a product falls into the melting pool;
3) One or more fuel spray guns and reducing agent or oxidizing agent spray guns are arranged on the side wall of the melting pool according to the strengthening requirements of the temperature and the atmosphere required by the chemical reaction so as to finish the final chemical reaction process.
2. The method of directionally strengthening flash metallurgy according to claim 1, wherein: the fuel can adopt any fuel such as natural gas, hydrogen, coke oven gas and the like.
3. The method of claim 1, wherein the method comprises: the reducing agent can be hydrogen or carbon monoxide, and the oxidizing agent can be air or oxygen.
4. The method of directionally strengthening flash metallurgy according to claim 1, wherein: the ore sand spray gun, the fuel spray gun, the reducing agent spray gun or the oxidizing agent spray gun can adopt a conventional spray gun or a plasma spray gun and the like.
5. The method of directionally strengthening flash metallurgy according to claim 1, wherein: according to the directional enhanced flash metallurgy method, the process heat compensation mode can be realized by adopting a heat compensation mode of preheating an oxidant or a reducing agent, heating an electrode and the like besides the heat compensation mode of the fuel spray gun.
6. The method of directionally strengthening flash metallurgy according to claim 1, wherein: the directional reinforced flash metallurgy method can treat complex ores of steel and nonferrous metals, laterite-nickel ores, gas ash, various industrial wastes and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211410722.5A CN115679100A (en) | 2022-11-11 | 2022-11-11 | Directional reinforced flash metallurgy method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211410722.5A CN115679100A (en) | 2022-11-11 | 2022-11-11 | Directional reinforced flash metallurgy method |
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| CN115679100A true CN115679100A (en) | 2023-02-03 |
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| CN202211410722.5A Pending CN115679100A (en) | 2022-11-11 | 2022-11-11 | Directional reinforced flash metallurgy method |
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- 2022-11-11 CN CN202211410722.5A patent/CN115679100A/en active Pending
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