CN108253788B - Metallurgical furnace - Google Patents
Metallurgical furnace Download PDFInfo
- Publication number
- CN108253788B CN108253788B CN201810204820.0A CN201810204820A CN108253788B CN 108253788 B CN108253788 B CN 108253788B CN 201810204820 A CN201810204820 A CN 201810204820A CN 108253788 B CN108253788 B CN 108253788B
- Authority
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- China
- Prior art keywords
- spray gun
- furnace
- lance
- metallurgical furnace
- jack
- 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.)
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Links
- 239000007921 spray Substances 0.000 claims abstract description 106
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 239000000446 fuel Substances 0.000 claims description 10
- 230000004308 accommodation Effects 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000003723 Smelting Methods 0.000 abstract description 13
- 239000011449 brick Substances 0.000 abstract description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 238000007664 blowing Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000006276 transfer reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/14—Arrangements of heating devices
- F27B14/143—Heating of the crucible by convection of combustion gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/13—Smelting
Abstract
The invention discloses a metallurgical furnace. The metallurgical furnace comprises: the furnace body is provided with a first spray gun jack and a second spray gun jack, the second spray gun jack is positioned below the first spray gun jack, and the first spray gun jack and the second spray gun jack are distributed in a staggered manner; a first spray gun: the first spray gun stretches into the furnace body through the first spray gun jack; and a second spray gun: the second spray gun stretches into the furnace body through the second spray gun jack. According to the metallurgical furnace, the first spray guns and the second spray guns which are distributed in a staggered manner are arranged on the side wall, so that macroscopic instability phenomenon in the side-blown furnace is effectively reduced or even eliminated, or the macroscopic instability phenomenon is effectively eliminated after the macroscopic instability phenomenon in the side-blown furnace is generated, the stable operation of the side-blown furnace is ensured, the service lives of the side-wall refractory bricks and the metallurgical furnace are prolonged, the large-scale side-blown furnace body is realized, and the smelting strength of the metallurgical furnace is improved.
Description
Technical Field
The invention relates to the field of metallurgy, in particular to a metallurgical furnace.
Background
The submerged side-blown molten pool smelting method is widely applied to the metal smelting fields of lead, copper, secondary lead, slag and the like. The side-blown molten pool smelting is to spray air, oxygen-enriched air, reducing agent and fuel into the molten pool through a spray gun arranged on the side wall of the furnace body, spray the side-blown gas jet into the molten pool and rapidly stir the molten pool so as to accelerate the heat transfer, mass transfer and chemical reaction processes in the molten pool. The existing side-blowing spray gun is generally arranged at a certain blowing height in a single row according to process conditions, and when the side-blowing spray gun is arranged in the single row, macroscopic instability phenomenon is very easy to occur in a side-blowing furnace, so that a regular molten pool shakes in a furnace melt, a side wall of the furnace body is seriously washed, the side-blowing furnace body is seriously vibrated, the service life of refractory bricks of the side wall and the service life of the furnace are reduced, and the large-scale development of the side-blowing furnace body is also limited.
Thus, the lance arrangement of metallurgical furnaces is to be investigated.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one purpose of the invention is to provide a metallurgical furnace, wherein the side wall is provided with a first spray gun and a second spray gun which are distributed in a staggered way, so that the macroscopic instability phenomenon in the side-blown furnace is effectively reduced or even eliminated, or the macroscopic instability phenomenon is effectively eliminated after the macroscopic instability phenomenon in the side-blown furnace is generated, the stable operation of the side-blown furnace is ensured, the service lives of side-wall refractory bricks and the metallurgical furnace are prolonged, the large-scale side-blown furnace body is realized, and the smelting intensity of the metallurgical furnace is improved.
The present invention has been completed based on the following work of the inventors:
the inventor finds that the regular fluctuation and shaking phenomenon shown in figure 1 occurs in the molten pool in the circular side-blown furnace when researching the influence of the liquid level depth of the molten pool on the penetration distance of the side-blown gas flow. Looking from right behind the side-blown lance: the side-blown gas jet is sprayed out by the spray gun to penetrate a certain distance, floats upwards and is swung left and right regularly, and a molten pool in the furnace regularly shows periodic 'tidal rise, tidal fall' wave-like fluctuation and shaking phenomenon. This phenomenon is different from the irregular splashing phenomenon, which occurs in the molten pool during normal blowing and is similar to turbulence, but is macroscopically regular and has a shake of a fixed frequency, and is called a macroscopically unstable phenomenon. When the inventor sets a row of spray guns arranged in a staggered way under the row of spray guns, as shown in fig. 2, the air flows sprayed by the spray guns are mixed in a molten pool, but the phenomenon of fluctuation and shaking in the molten pool caused by the spray of a single row of spray guns is eliminated, and the macroscopic instability phenomenon is obviously weakened.
Thus, according to one aspect of the invention, there is provided a metallurgical furnace. According to an embodiment of the invention, the metallurgical furnace comprises: the furnace body is provided with a first spray gun jack and a second spray gun jack, the second spray gun jack is positioned below the first spray gun jack, and the first spray gun jack and the second spray gun jack are distributed in a staggered manner; a first spray gun: the first spray gun stretches into the furnace body through the first spray gun jack; and a second spray gun: the second spray gun stretches into the furnace body through the second spray gun jack.
According to the metallurgical furnace disclosed by the embodiment of the invention, the first spray guns and the second spray guns which are distributed in a staggered manner are arranged on the side wall, so that the macroscopic instability phenomenon in the side-blown furnace is effectively reduced or even eliminated, or the macroscopic instability phenomenon is effectively eliminated after the macroscopic instability phenomenon in the side-blown furnace is generated, the stable operation of the side-blown furnace is ensured, the service lives of the side-wall refractory bricks and the metallurgical furnace are prolonged, the side-blown furnace body is enlarged, and the smelting strength of the metallurgical furnace is improved.
In addition, the metallurgical furnace according to the above embodiment of the invention may have the following additional technical features:
according to an embodiment of the present invention, the first spray gun and the second spray gun are each plural.
According to an embodiment of the invention, the number of first spray guns is greater than the number of second spray guns.
According to the embodiment of the invention, the first spray gun and the second spray gun form an included angle of 0-30 degrees with the horizontal direction. According to a preferred embodiment of the invention, the first and second spray guns form an angle of 0-10 degrees with the horizontal direction.
According to an embodiment of the invention, the distance between the first spray gun and the second spray gun in the vertical direction is 0.3-1 meter.
According to the embodiment of the invention, the first spray gun and the second spray gun are uniformly distributed along the circumferential direction of the furnace body.
According to the embodiment of the invention, the first spray guns are symmetrically distributed along the side wall of the furnace body.
According to the embodiment of the invention, the second spray guns are symmetrically distributed along the side wall of the furnace body.
According to an embodiment of the invention, each of the first and second spray guns comprises: a housing defining an accommodation space therein; and at least one of the following: a fuel nozzle provided in the accommodation space; a reducing agent nozzle disposed in the accommodation space; an oxygen-enriched air lance disposed in the accommodation space.
According to an embodiment of the present invention, each of the first and second spray guns further comprises: and the cooling air spray pipe is arranged in the accommodating space.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 shows a schematic diagram simulating instability phenomena for a single row lance;
FIG. 2 shows a schematic diagram of two rows of lance injection in a simulated staggered arrangement;
FIG. 3 shows a schematic structural view of a metallurgical furnace according to one embodiment of the invention;
FIG. 4 shows a schematic diagram of the structure of a metallurgical furnace according to one embodiment of the invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. refer to the orientation or positional relationship based on that shown in the drawings, merely for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
It should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. Further, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
According to one aspect of the invention, a metallurgical furnace is provided. According to the metallurgical furnace disclosed by the embodiment of the invention, the first spray guns and the second spray guns which are distributed in a staggered manner are arranged on the side wall, so that the macroscopic instability phenomenon in the side-blown furnace is effectively reduced or even eliminated, or the macroscopic instability phenomenon is effectively eliminated after the macroscopic instability phenomenon in the side-blown furnace is generated, the stable operation of the side-blown furnace is ensured, the service lives of the side-wall refractory bricks and the metallurgical furnace are prolonged, the side-blown furnace body is enlarged, and the smelting strength of the metallurgical furnace is improved.
Referring to fig. 3 and 4, the metallurgical furnace is explained according to an embodiment of the present invention, which includes:
furnace body 100: according to the embodiment of the invention, the furnace body 100 is provided with a first spray gun jack 110 and a second spray gun jack 120, the second spray gun jack 120 is positioned below the first spray gun jack 110, and the first spray gun jack 110 and the second spray gun jack 120 are in staggered distribution. From this, insert first spray gun and second spray gun in the molten bath of furnace body outside to the furnace body on first spray gun jack and the second spray gun jack that stagger set up to effectively alleviate even eliminate the macroscopical unstable phenomenon in the side-blown furnace, perhaps effectively eliminate macroscopical unstable phenomenon after macroscopical unstable phenomenon produces in the side-blown furnace, guarantee side-blown furnace steady operation, prolong the life-span of side wall refractory brick and metallurgical stove, realize side-blown furnace body maximization, improve metallurgical furnace smelting intensity.
First spray gun 200: according to an embodiment of the present invention, the first lance 200 extends into the furnace body 100 through the first lance insertion hole 110. The first lance 200 provides the primary source of heat for smelting in a metallurgical furnace.
It should be noted that, the installation height of the first lance 200 may be set according to the installation height of the lance in the metallurgical furnace of the conventional single-row lance, and a person skilled in the art may select an appropriate injection height of the lance and install the first lance according to the smelting object and the smelting condition. Accordingly, according to an embodiment of the present invention, the number of the first lances 200 may be plural, and the number of the first lances may be set according to the number of lance installation requirements of a conventional metallurgical furnace with single-row lances, and in particular, one skilled in the art may determine the total amount of gas to be supplied and the gas supply capacity of a single first lance.
According to an embodiment of the invention, the number of first lances 200 is greater than the number of second lances 300, the first lances being the primary source of heat and agitation power for the bath smelting.
Second spray gun 300: according to an embodiment of the present invention, the second lance 300 extends into the furnace body 100 through the second lance insertion hole 120. Therefore, the macroscopic instability phenomenon in the side-blown furnace can be effectively reduced or even eliminated under the combined action of the second spray gun and the first spray gun, or the macroscopic instability phenomenon in the side-blown furnace can be effectively eliminated after the macroscopic instability phenomenon is generated.
The number of second lances 300 according to the embodiment of the present invention is not particularly limited, and one skilled in the art may select according to the specific smelting situation. According to some embodiments of the invention, the second spray gun 300 is a plurality. Preferably, the number of second guns 300 is less than the number of first guns 200, and in production, the second guns 300 may be one or more or unused, and unused guns may be conveniently plugged with steel.
According to an embodiment of the present invention, the first and second spray guns 200 and 300 are inclined downward from the horizontal by an angle of 0-30 degrees. According to the preferred embodiment of the present invention, the first spray gun 200 and the second spray gun 300 are inclined at an angle of 0-10 degrees downward from the horizontal. Therefore, the spray objects sprayed by the spray gun have a certain penetration distance, the combustion point is far away from the side wall of the furnace body, the erosion of the side wall caused by air flow is reduced, and the service life of the refractory bricks of the furnace wall is prolonged.
According to an embodiment of the present invention, the distance between the first spray gun 200 and the second spray gun 300 in the vertical direction is 0.3-1 meter. Therefore, the macroscopically unstable phenomenon in the side-blown furnace is obviously reduced or even eliminated, and the macroscopically unstable phenomenon in the side-blown furnace is effectively eliminated after the macroscopically unstable phenomenon is generated.
According to an embodiment of the present invention, the first and second lances 200 and 300 are uniformly distributed along the circumferential direction of the furnace body 100. Therefore, the method is beneficial to reducing or even eliminating the macroscopic instability phenomenon in the side-blown furnace, or effectively eliminating the macroscopic instability phenomenon after the macroscopic instability phenomenon in the side-blown furnace is generated, and ensuring the stable operation of the side-blown furnace. Further, according to the preferred embodiment of the present invention, the first lances 200 are symmetrically distributed along the sidewall of the furnace body 100. Accordingly, according to an embodiment of the present invention, the second lances 300 are symmetrically distributed along the sidewall of the furnace body 100. Therefore, the first spray gun and the second spray gun are symmetrically arranged and symmetrically spray the spray, the acting force on the furnace body in the spraying process is small, the macroscopic instability phenomenon in the side-blown furnace is obviously lightened or even eliminated, the macroscopic instability phenomenon is effectively eliminated after the macroscopic instability phenomenon in the side-blown furnace is generated, the stable operation of the side-blown furnace is ensured, and the service lives of the refractory bricks and the side-blown furnace are prolonged.
According to an embodiment of the present invention, each of the first spray gun 200 and the second spray gun 300 includes: the oxygen-enriched air injection device comprises a shell and at least one of a fuel injection pipe, a reducing agent injection pipe and an oxygen injection pipe, wherein an accommodating space is defined in the shell, the fuel injection pipe is arranged in the accommodating space, the reducing agent injection pipe is arranged in the accommodating space, and the oxygen-enriched air injection pipe is also arranged in the accommodating space. Therefore, the oxygen-enriched air, the fuel and the reducing agent are sprayed out by the same spray gun, which is favorable for mixing and full combustion of materials.
According to an embodiment of the present invention, each of the first spray gun 200 and the second spray gun 300 further includes: -a cooling air nozzle arranged in the accommodation space. Therefore, the cooling air, the oxygen-enriched air, the fuel and the reducing agent are sprayed out by the same spray gun, which is favorable for mixing and fully burning materials.
In addition, it should be further noted that the substance to be injected by each lance is not particularly limited, and may be at least one of fuel, reducing agent, oxygen-enriched air and cooling air, that is, one lance, may inject any one of fuel, reducing agent, oxygen-enriched air and cooling air, or may inject any combination of two or three thereof, or may inject fuel, reducing agent, oxygen-enriched air and cooling air simultaneously. The type of the injected material and the proportion of each material can be adjusted by the supply pipeline or the structure of the injection pipeline of the spray gun.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A metallurgical furnace, comprising:
the furnace body is provided with a first spray gun jack and a second spray gun jack, the second spray gun jack is positioned below the first spray gun jack, and the first spray gun jack and the second spray gun jack are distributed in a staggered manner;
a first spray gun: the first spray gun stretches into the furnace body through the first spray gun jack; and
a second spray gun: the second spray gun stretches into the furnace body through the second spray gun jack;
each of the first and second spray guns includes a housing defining a receiving space therein.
2. The metallurgical furnace of claim 1, wherein the first lance and the second lance are each a plurality.
3. The metallurgical furnace of claim 2, wherein the number of first lances is greater than the number of second lances.
4. The metallurgical furnace of claim 1, wherein the first lance and the second lance are inclined downwardly at an angle of 30 degrees or 10 degrees to the horizontal.
5. The metallurgical furnace of claim 1, wherein the first lance and the second lance are spaced apart from each other in the vertical direction by a distance of 0.3 to 1 meter.
6. The metallurgical furnace of claim 1, wherein the first lance and the second lance are each uniformly distributed along the circumference of the furnace body.
7. The metallurgical furnace of claim 1, wherein the first lances are symmetrically distributed along a side wall of the vessel.
8. The metallurgical furnace of claim 1, wherein the second lances are symmetrically distributed along the side wall of the vessel.
9. The metallurgical furnace of any one of claims 2-8, wherein each of the first lance and the second lance comprises:
at least one of the following nozzles:
a fuel nozzle provided in the accommodation space;
a reducing agent nozzle disposed in the accommodation space;
an oxygen-enriched air lance disposed in the accommodation space.
10. The metallurgical furnace of claim 9, wherein each of the first lance and the second lance further comprises:
and the cooling air spray pipe is arranged in the accommodating space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810204820.0A CN108253788B (en) | 2018-03-13 | 2018-03-13 | Metallurgical furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810204820.0A CN108253788B (en) | 2018-03-13 | 2018-03-13 | Metallurgical furnace |
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| Publication Number | Publication Date |
|---|---|
| CN108253788A CN108253788A (en) | 2018-07-06 |
| CN108253788B true CN108253788B (en) | 2024-01-05 |
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| CN201810204820.0A Active CN108253788B (en) | 2018-03-13 | 2018-03-13 | Metallurgical furnace |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111926133B (en) * | 2020-10-10 | 2021-01-08 | 中国恩菲工程技术有限公司 | Method and apparatus for smelting iron-based mineral |
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| WO2017197986A1 (en) * | 2016-05-16 | 2017-11-23 | 中国恩菲工程技术有限公司 | Spray gun for side-submerged combustion smelting apparatus |
| CN208238529U (en) * | 2018-03-13 | 2018-12-14 | 中国恩菲工程技术有限公司 | metallurgical furnace |
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2018
- 2018-03-13 CN CN201810204820.0A patent/CN108253788B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2001272223B2 (en) * | 2000-07-20 | 2006-04-06 | Technological Resources Pty Ltd | A direct smelting process and apparatus |
| AU8737101A (en) * | 2000-09-19 | 2002-04-02 | Tech Resources Pty Ltd | A direct smelting process and apparatus |
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| CN108253788A (en) | 2018-07-06 |
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