CN110157847B - Smelting system of iron-based polymetallic mineral aggregate - Google Patents
Smelting system of iron-based polymetallic mineral aggregate Download PDFInfo
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- CN110157847B CN110157847B CN201910517182.2A CN201910517182A CN110157847B CN 110157847 B CN110157847 B CN 110157847B CN 201910517182 A CN201910517182 A CN 201910517182A CN 110157847 B CN110157847 B CN 110157847B
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- smelting
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- feeding hole
- iron
- flue
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- 238000003723 Smelting Methods 0.000 title claims abstract description 113
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 34
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 21
- 239000011707 mineral Substances 0.000 title claims abstract description 21
- 230000009467 reduction Effects 0.000 claims abstract description 49
- 229910052751 metal Inorganic materials 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 27
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 25
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000011084 recovery Methods 0.000 claims abstract description 23
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 239000002893 slag Substances 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000000155 melt Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000007664 blowing Methods 0.000 claims description 26
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 12
- 239000003546 flue gas Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 9
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 7
- 239000002918 waste heat Substances 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000011946 reduction process Methods 0.000 claims description 5
- 239000007791 liquid phase Substances 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims 3
- 238000005265 energy consumption Methods 0.000 abstract description 13
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 13
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
-
- 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
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
-
- 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
- C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
- C22B4/06—Alloys
-
- 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
- C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
- C22B4/08—Apparatus
Abstract
The invention provides a smelting system of an iron-based multi-metal mineral aggregate. The iron-based multi-metal mineral aggregate comprises iron element, titanium element and vanadium element, and the smelting system comprises: the device comprises a mixing device, a molten pool smelting device and an electrothermal reduction device, wherein the mixing device is provided with a batching inlet and a mixing outlet; the molten pool smelting device is provided with a first feeding hole, a second feeding hole and a molten liquid outlet, the first feeding hole is arranged at the top of the molten pool smelting device, the second feeding hole is arranged on the side wall of the molten pool smelting device, and the material mixing outlet is communicated with the first feeding hole and/or the second feeding hole; and the electrothermal reduction device is provided with a slag discharge port, a metal discharge port and a melt inlet, and the melt inlet is communicated with the melt outlet. The smelting system combining the mixing device, the efficient molten pool smelting device and the electrothermal reduction device can effectively improve the recovery rate of vanadium element, reduce the operation labor intensity, and simultaneously have the advantages of reducing comprehensive energy consumption, improving environmental emission indexes and the like.
Description
Technical Field
The invention relates to the field of metal smelting, in particular to a smelting system of an iron-based multi-metal mineral aggregate.
Background
Vanadium titano-magnetite is a more difficult ore to smelt. The vanadium titano-magnetite smelting device which is mature in application at present mainly comprises a blast furnace smelting device and a rotary kiln-electric furnace smelting device.
The smelting process by adopting the blast furnace smelting device mainly comprises the steps of adding vanadium titano-magnetite into a blast furnace after sintering or pelletizing, and recovering iron and vanadium. The prior document CN102041331A discloses a process for smelting vanadium titano-magnetite by using a blast furnace as a smelting device in the smelting process. But the smelting device has the main advantages of high production efficiency, large production scale, high comprehensive energy consumption, long flow, difficult separation of slag and iron, and low slag sticking and desulfurization capacity. In addition, the blast furnace method has higher requirements on the content of TiO 2 in the slag, which is generally lower than 25%.
The rotary kiln-electric furnace device is characterized in that iron concentrate obtained by ore dressing can be directly used for smelting, the flow is short, the recovery rate of iron and vanadium is higher than that of a blast furnace device, but titanium slag cannot be recycled at present. The prior document CN107815537a discloses a treatment device for vanadium titano-magnetite, which comprises a rotary kiln, a coal injector, an electric furnace and a converter. Firstly, pre-reducing vanadium titano-magnetite in a rotary kiln to obtain calcine; then the calcine enters an electric furnace for reduction smelting to obtain vanadium-containing molten iron; and finally, carrying out blowing treatment on the vanadium-containing molten iron in a converter to obtain semisteel and titanium slag. Compared with a blast furnace device, the rotary kiln-electric furnace smelting device has low comprehensive energy consumption, does not need coking or sintering, and has better environmental emission index. The rotary kiln-electric furnace method has the defects that the comprehensive energy consumption is still higher, the dependence on the electric power energy source is strong, and the method is difficult to popularize in areas with lack of electric power resources or high electric power cost.
In view of the above, there is a need to provide a low energy consumption smelting system for iron-based metalliferous mineral materials.
Disclosure of Invention
The invention mainly aims to provide a smelting system of an iron-based multi-metal mineral and aims to solve the problems of high energy consumption and low raw material adaptability of the existing smelting technology for the iron-based multi-metal mineral.
In order to achieve the above object, the present invention provides a smelting system for treating an iron-based multi-metal mineral aggregate including iron element, titanium element and vanadium element, the smelting system comprising: the device comprises a mixing device, a molten pool smelting device and an electrothermal reduction device, wherein the mixing device is provided with a batching inlet and a mixing outlet; the molten pool smelting device is provided with a first feeding hole, a second feeding hole and a molten liquid outlet, the first feeding hole is arranged at the top of the molten pool smelting device, the second feeding hole is arranged on the side wall of the molten pool smelting device, and the material mixing outlet is communicated with the first feeding hole and/or the second feeding hole; and the electrothermal reduction device is provided with a slag discharge port, a metal discharge port and a melt inlet, and the melt inlet is communicated with the melt outlet.
Further, the bath smelting device is a side-blown submerged bath smelting device, and the bath smelting device comprises at least one first side-blown lance, and the nozzle of the first side-blown lance is submerged below the liquid surface of the bath in the bath smelting device through a second feed port so as to spray fuel and oxygen-enriched air into the bath.
Further, the electrothermal reduction apparatus includes: at least one electrode, at least one second side-blowing spray gun and at least one top-blowing spray gun, wherein the tail end of the electrode is positioned below the liquid-phase material in the electrothermal reduction device and is used for supplying heat to the electrothermal reduction process; the nozzles of the second side-blowing spray gun and the top-blowing spray gun are both positioned above the liquid level in the electrothermal reduction device and are used for spraying the reducing agent into the electrothermal reduction device.
Further, the molten pool smelting device is also provided with a first flue which is communicated with the molten pool of the molten pool smelting device.
Further, the electrothermal reduction device is also provided with a second flue which is communicated with the reduction cavity of the electrothermal reduction device.
Further, the smelting system further comprises a dust collection device, the dust collection device is provided with a smoke inlet, and the smoke inlet is respectively communicated with the outlet ends of the first flue and the second flue through a smoke conveying pipeline.
Further, the smelting system also comprises a waste heat recovery device, and the waste heat recovery device is arranged on the flue gas conveying pipeline.
Further, the smelting system further comprises a crushing and drying device for crushing and drying the reaction raw materials, wherein the crushing and drying device is provided with a discharge port, and the discharge port is communicated with the batching inlet.
Further, the discharge granularity of the discharge port is smaller than 50mm.
By applying the technical scheme of the application, the smelting system for treating the iron-based polymetallic mineral aggregate aims at the problems of high energy consumption, poor raw material adaptability and the like of the existing blast furnace or rotary kiln-electric furnace smelting device. The smelting system combining the mixing device, the efficient molten pool smelting device and the electrothermal reduction device can effectively improve the recovery rate of vanadium element, reduce the operation labor intensity, and simultaneously have the advantages of reducing comprehensive energy consumption, improving environmental emission indexes and the like.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 shows a schematic diagram of a smelting system for treating iron-based metalliferous mineral in accordance with an exemplary embodiment of the present invention;
FIG. 2 shows a schematic structural view of a smelting apparatus for iron-based multi-metal ores provided in accordance with an exemplary embodiment of the present invention;
FIG. 3 shows a schematic view of the bath smelting device of FIG. 2 in the direction A-A;
Fig. 4 is a schematic view showing the structure of the electro-thermal reduction device shown in fig. 2 in the C-C direction.
Wherein the above figures include the following reference numerals:
100. A mixing device;
200. a molten pool smelting device; 210. a first side-blowing lance; 220. a first flue; 201. a first feed inlet; 202. a second feed inlet;
300. An electrothermal reduction device; 310. an electrode; 320. a second side-blowing lance; 330. a top-blowing spray gun; 340. a second flue; 301. A slag discharge port; 302. a metal discharge port;
400. A dust collection device; 500. a waste heat recovery device; 600. crushing and drying device.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The present application will be described in detail with reference to examples.
As described in the background art, the existing smelting technology for the iron-based polymetallic mineral materials has the problems of high energy consumption and poor raw material adaptability. In order to solve the technical problems, the application provides a smelting system for treating an iron-based multi-metal mineral aggregate, wherein the iron-based multi-metal mineral aggregate comprises iron element, titanium element and vanadium element, and the smelting system comprises: the device comprises a mixing device 100, a molten pool smelting device 200 and an electrothermal reduction device 300, wherein the mixing device 100 is provided with a batching inlet and a mixing outlet; the molten pool smelting device 200 is provided with a first feeding hole 201, a second feeding hole 202 and a molten liquid outlet, the first feeding hole 201 is arranged at the top of the molten pool smelting device 200, the second feeding hole 202 is arranged on the side wall of the molten pool smelting device 200, and the mixing outlet is communicated with the first feeding hole 201 and/or the second feeding hole 202; and the electrothermal reduction device 300 is provided with a slag discharge port 301, a metal discharge port 302, and a melt inlet, which communicates with a melt outlet.
In the smelting system, after the reaction raw materials are mixed by the mixing device 100, the mixture enters the molten pool smelting device 200 through the first charging port 201 and/or the second charging port 202 to undergo melting and partial reduction processes to obtain molten liquid; then, the above-mentioned molten liquid is subjected to electrothermal deep reduction and slag depletion in electrothermal reduction apparatus 300, and after the reaction is completed, the metal is discharged through metal discharge port 302, and the slag is discharged through slag discharge port 301.
The smelting system for treating the iron-based polymetallic mineral aggregate adopts a two-in-one furnace technology of a mixing device, an oxygen-enriched molten pool smelting device and an electrothermal reduction device, and adopts a short-flow process that raw materials such as iron-based polymetallic concentrate and the like are mixed by the mixing device 100 and then directly enter the molten pool smelting device 200 and the electrothermal reduction device 300, so that pretreatment procedures such as rotary kiln smelting or sintering are omitted. The smelting system combining the mixing device 100, the efficient molten pool smelting device 200 and the electrothermal reduction device 300 can effectively improve the recovery rate of vanadium element, reduce the operation labor intensity, and simultaneously have the advantages of reducing comprehensive energy consumption, improving environmental emission indexes and the like.
In a preferred embodiment, the bath smelting device 200 is a side-blown submerged bath smelting device, the bath smelting device 200 comprising at least one first side-blown lance 210, the nozzle of the first side-blown lance 210 being submerged below the level of the bath in the bath smelting device 200 via a second feed port 202 for injecting fuel and oxygen-enriched air into the bath. The injection of fuel and oxygen-enriched air into the bath smelting device 200 by the first side-blowing lance 210 can provide strong agitation to the melt therein, thereby facilitating the improvement of mass and heat transfer efficiency, and simultaneously facilitating the improvement of the recovery rate of subsequent vanadium elements and the like.
In a preferred embodiment, electrothermal reduction device 300 includes: at least one electrode 310, at least one second side-blowing lance 320 and at least one top-blowing lance 330, the tip of the electrode 310 being located below the liquid phase material in the electrothermal reduction device 300 for supplying heat to the electrothermal reduction process; the nozzles of the second side-blowing lance 320 and the top-blowing lance 330 are both positioned above the liquid level in the electrothermal reduction apparatus 300 for injecting the reducing agent into the electrothermal reduction apparatus 300. Preferably, electrode 310 is a graphite electrode.
Injecting the reducing agent into the second side-blowing lance 320 and/or the top-blowing lance 330 may increase the contact area of the melt with the reducing agent so that the two react sufficiently. Meanwhile, the reducing agent is sprayed above the liquid level of the electrothermal reduction device 300, so that stirring of the liquid level of the electrothermal reduction device 300 caused by the addition of raw materials is restrained, and the influence of the stirring on the separation efficiency of vanadium-containing molten iron and titanium slag in the slag depletion process is reduced.
In order to facilitate the discharge of the flue gas, the molten pool smelting device 200 is preferably further provided with a first flue 220, and the first flue 220 is communicated with the molten pool of the molten pool smelting device 200; preferably, the electrothermal reduction device 300 is further provided with a second flue 340, and the second flue 340 is communicated with the reduction chamber of the electrothermal reduction device 300.
In order to improve the environmental protection of the whole process, in a preferred embodiment, the smelting system further comprises a dust collecting device 400, wherein the dust collecting device 400 is provided with a flue gas inlet, and the flue gas inlet is respectively communicated with the outlet ends of the first flue 220 and the second flue 340 through a flue gas conveying pipeline.
A certain amount of flue gas is generated during smelting, and usually the flue gas contains high heat. In order to increase the energy utilization, in a preferred embodiment, the smelting system further comprises a waste heat recovery device 500, the waste heat recovery device 500 being arranged on the flue gas transport line. The crushing and drying device 600 is used for crushing and drying the reaction raw materials, and the crushing and drying device 600 is provided with a discharge port which is communicated with the batching inlet; preferably, the discharge opening has a discharge particle size of less than 50mm. The crushing and drying device is arranged, so that the granularity and the water content of the iron-based multi-metal mineral aggregate are limited in the above range, and the melting efficiency of the iron-based multi-metal raw material is improved.
The application is described in further detail below in connection with specific examples which are not to be construed as limiting the scope of the application as claimed.
The compositions of the iron-based polymetallic mineral in examples 1 to 5 are 45 to 62wt% of Fe, 0.1 to 1.2wt% of TiO 2 7～20wt％、V2O5 and the balance of impurities, and the process flow is shown in figure 1.
Example 1
As shown in fig. 1 to 4, the bath smelting device comprises a bath smelting device 200 and an electrothermal reduction device 300 which are communicated, the bath smelting device 200 is provided with a first charging port 201 and a second charging port 202, the first charging port 201 is arranged at the top of the bath smelting device 200, the second charging port 202 is arranged on the side wall of the bath smelting device 200, and the electrothermal reduction device 300 is provided with a slag discharging port 301 and a metal discharging port 302. The nozzle of the first side-blown lance 210 is submerged below the level of the molten bath in the bath smelting device 200 via the second feed port 202 to inject fuel and oxygen-enriched air into the molten bath.
The electrothermal reduction device 300 is provided with 3 electrodes 310 (self-baking electrodes) and is supplied with ac power. A second side-blowing lance 320 and a top-blowing lance 330 are provided. The end of each electrode 310 is positioned below the liquid phase material of the electroheat reduction device 300 for supplying heat to the electroheat reduction process; the nozzle of the second side-blowing lance 320 is positioned above the liquid level of the electro-thermal reduction device 300 for injecting the reducing agent into the electro-thermal reduction device 300. The reduction smelting temperature in the smelting process is 1600 ℃.
Through the smelting process, the recovery rate of vanadium element is 95wt% and the recovery rate of iron element is 87wt%.
Example 2
The differences from example 1 are:
no submerged side-blown lance is used to inject fuel into the bath smelting unit 200.
Through the smelting process, the recovery rate of vanadium element is 93wt%, the recovery rate of iron element is 88wt%, and the comprehensive energy consumption is 7% higher than that of example 1.
Example 3
The differences from example 1 are: the number of electrodes 310 is 2.
Through the smelting process, the recovery rate of the vanadium element is 94wt% and the recovery rate of the iron element is 87wt%.
Example 4
The differences from example 1 are: the electrode 310 is made of graphite electrode.
Through the smelting process, the recovery rate of the vanadium element is 92wt% and the recovery rate of the iron element is 86wt%.
Example 5
The differences from example 1 are: the reducing agent is added using a top-blowing lance 330.
Through the smelting process, the recovery rate of vanadium element is 94wt%, the recovery rate of iron element is 87wt%, and the comprehensive energy consumption is 5% higher than that of example 1.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
Compared with the existing smelting device, the smelting system combining efficient molten pool smelting and electrothermal reduction can effectively improve the recovery rate of vanadium element, and has the advantages of reducing comprehensive energy consumption, improving environmental emission indexes and the like.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. Use of a smelting system for treating an iron-based multi-metal mineral that includes elemental iron, elemental titanium, and elemental vanadium, the smelting system comprising:
A mixing device (100), wherein the mixing device (100) is provided with a batching inlet and a mixing outlet;
The molten pool smelting device (200), wherein the molten pool smelting device (200) is provided with a first feeding hole (201), a second feeding hole (202) and a molten liquid outlet, the first feeding hole (201) is arranged at the top of the molten pool smelting device (200), the second feeding hole (202) is arranged on the side wall of the molten pool smelting device (200), and the mixed material outlet is communicated with the first feeding hole (201) and/or the second feeding hole (202); and
An electrothermal reduction device (300), wherein the electrothermal reduction device (300) is provided with a slag discharge port (301), a metal discharge port (302) and a melt inlet, and the melt inlet is communicated with the melt outlet;
The molten pool smelting device (200) is a side-blowing submerged molten pool smelting device, the molten pool smelting device (200) comprises at least one first side-blowing spray gun (210), and a nozzle of the first side-blowing spray gun (210) is submerged below the liquid level of a molten pool in the molten pool smelting device (200) through the second feeding hole (202) so as to spray fuel and oxygen-enriched air into the molten pool;
the electrothermal reduction device (300) includes:
at least one electrode (310), the tip of the electrode (310) being located below the liquid phase material in the electrothermic reduction device (300) for supplying heat to the electrothermic reduction process;
At least one second side-blowing lance (320) and at least one top-blowing lance (330), the nozzles of the second side-blowing lance (320) and the nozzles of the top-blowing lance (330) being both located above the liquid level in the electrothermal reduction device (300) for injecting a reducing agent into the electrothermal reduction device (300).
2. The use of a smelting system according to claim 1 for treating iron-based multi-metal ores, wherein the bath smelting device (200) is further provided with a first flue (220), the first flue (220) being in communication with the bath of the bath smelting device (200).
3. The use of a smelting system according to claim 2 for treating iron-based multi-metal ores, wherein the electrothermal reduction device (300) is further provided with a second flue (340), the second flue (340) being in communication with the reduction chamber of the electrothermal reduction device (300).
4. A use of a smelting system according to claim 3 for treating iron-based multi-metal mineral aggregate, characterized in that the smelting system further comprises a dust collection device (400), the dust collection device (400) being provided with a flue gas inlet, which flue gas inlet communicates with the outlet ends of the first flue (220) and the second flue (340), respectively, via a flue gas conveying line.
5. The use of a smelting system according to claim 4 for treating iron-based multi-metal mineral aggregate, characterized in that the smelting system further comprises a waste heat recovery device (500), the waste heat recovery device (500) being arranged on the flue gas conveying line.
6. The use of a smelting system according to claim 5 for treating iron-based multi-metal mineral, characterized in that the smelting system further comprises a crushing and drying device (600) for crushing and drying the reaction raw material, the crushing and drying device (600) being provided with a discharge opening, and the discharge opening being in communication with the burden inlet.
7. The use of the smelting system according to claim 6 for treating iron-based multi-metal ore material wherein the discharge orifice has a discharge particle size of less than 50mm.
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| CN201910517182.2A CN110157847B (en) | 2019-06-14 | 2019-06-14 | Smelting system of iron-based polymetallic mineral aggregate |
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| CN201910517182.2A CN110157847B (en) | 2019-06-14 | 2019-06-14 | Smelting system of iron-based polymetallic mineral aggregate |
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| CN110157847B true CN110157847B (en) | 2024-04-26 |
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| CN101906498A (en) * | 2010-08-25 | 2010-12-08 | 武钢集团昆明钢铁股份有限公司 | Method for comprehensively smelting sefstromite |
| CN106996695A (en) * | 2016-01-22 | 2017-08-01 | 中国恩菲工程技术有限公司 | A kind of metallurgical furnace |
| CN107858502A (en) * | 2017-12-07 | 2018-03-30 | 中国恩菲工程技术有限公司 | Vanadium titano-magnetite processing method |
| CN210122577U (en) * | 2019-06-14 | 2020-03-03 | 中国恩菲工程技术有限公司 | Smelting system of iron-based multi-metal mineral aggregate |
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2019
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| CN101906498A (en) * | 2010-08-25 | 2010-12-08 | 武钢集团昆明钢铁股份有限公司 | Method for comprehensively smelting sefstromite |
| CN106996695A (en) * | 2016-01-22 | 2017-08-01 | 中国恩菲工程技术有限公司 | A kind of metallurgical furnace |
| CN107858502A (en) * | 2017-12-07 | 2018-03-30 | 中国恩菲工程技术有限公司 | Vanadium titano-magnetite processing method |
| CN210122577U (en) * | 2019-06-14 | 2020-03-03 | 中国恩菲工程技术有限公司 | Smelting system of iron-based multi-metal mineral aggregate |
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