CN112344737A - Internal and external burner blast smelting furnace - Google Patents
Internal and external burner blast smelting furnace Download PDFInfo
- Publication number
- CN112344737A CN112344737A CN202011236486.0A CN202011236486A CN112344737A CN 112344737 A CN112344737 A CN 112344737A CN 202011236486 A CN202011236486 A CN 202011236486A CN 112344737 A CN112344737 A CN 112344737A
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- Prior art keywords
- furnace
- burner
- smelting
- blast
- nozzle
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- 238000003723 Smelting Methods 0.000 title claims abstract description 36
- 239000007921 spray Substances 0.000 claims abstract description 15
- 239000000779 smoke Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000004575 stone Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
Images
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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention discloses an internal and external burner blast smelting furnace with an internal burner arranged in a conventional blast smelting furnace, belongs to the technical field of smelting, and can be applied to smelting of iron making, non-ferrous metal smelting, cast stone and the like. The invention mainly aims to solve the problems that the existing blast smelting furnace only has an outer burner, the blast volume is gradually reduced along with the radial direction of the furnace, and a smelting delay area or a dead area exists in the center of the furnace. The inner burner on the large blast smelting furnace can be a burner similar to the outer burner and is arranged on the inner furnace wall of the bell-shaped space at the lower end of the central part of the blast furnace, and the inner burner on the small blast smelting furnace or the medium blast smelting furnace is a spray gun type inner burner and is arranged at the bottom or the top of the furnace and is inserted into the deep part in the furnace. The invention can improve the condition of uneven smelting, greatly improve the yield and improve the economic benefit.
Description
Technical Field
The invention belongs to the technical field of smelting, and particularly relates to an internal and external burner air-blast smelting furnace.
Background
The blast smelting furnace is a smelting furnace which uses lump ore as furnace charge to smelt molten products, and is widely applied to industries of iron making, non-ferrous metal smelting, casting and the like. For example, iron-making blast furnaces; for another example, the non-ferrous smelting large-scale closed blast furnace adopts a rectangular horizontal section furnace type to overcome the defects, and has the disadvantages of large relative investment, unreasonable structure and poor effect.
Disclosure of Invention
The invention aims to provide an internal and external burner blast smelting furnace which can improve the smelting uneven state, improve the yield and quality and improve the economic benefit.
The invention adopts the following technical scheme:
an inner burner nozzle is arranged in a conventional blast smelting furnace and comprises a furnace body, the furnace body comprises a furnace wall, a furnace top and a molten pool, an outer burner nozzle is arranged on the furnace wall, a charging hole is arranged on the furnace top, a molten product discharge hole is arranged on the side wall of the molten pool, a smoke discharge hole is arranged on the furnace top or the upper part of the furnace wall, a conventional inner burner nozzle or a spray gun type inner burner nozzle is arranged in the furnace body, when the furnace body is a large blast smelting furnace, the conventional inner burner nozzle is adopted, a bell-jar type inner furnace wall is arranged in the middle of the lower end of the furnace body to form a bell-shaped space with a downward bell mouth, the conventional inner burner nozzle is arranged on the bell-jar type inner furnace wall, the common horizontal height is higher than the outer burner nozzle, the direction of the nozzle is an inclined downward direction or a horizontal direction, when the furnace, the spray gun type inner burner is arranged on the furnace bottom or the furnace top and extends into the furnace, the horizontal height of the nozzle is higher than that of the outer burner, and the direction of the nozzle is vertical downward or inclined downward or horizontal.
Further, the conventional inner burner is the same as or similar to the outer burner.
In addition, the spray gun type inner burner extends into the furnace body from the bottom or the top of the furnace.
The invention has the beneficial effects that: compared with the existing blast smelting furnace, the invention can obviously improve the smelting uniformity state, greatly improve the yield and improve the economic benefit only by slightly increasing the investment.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 3 is a schematic structural diagram of embodiment 3 of the present invention.
Wherein, the furnace comprises a furnace wall 1, a furnace top 2, a molten pool 3, an external burner 4, a charging port 5, a molten product discharge port 6, a conventional internal burner 7, a smoke discharge port 8, a bell-jar-shaped internal furnace wall 9 and a spray gun-type internal burner 10.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. 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 application.
Example 1
As shown in figure 1, the inner and outer burner blast smelting furnace comprises a furnace body, wherein the furnace body comprises a furnace wall 1, a furnace top 2, a molten pool 3 and an outer burner 4 arranged on the furnace wall 1, a feeding port 5 is arranged on the furnace top 2, a molten product discharge port 6 is arranged on the side wall of the molten pool 3, a smoke discharge port 8 is arranged on the side wall of the upper part of the furnace top 2 or the furnace wall 1, an inner burner 7 is arranged inside the furnace body, and the horizontal height of the inner burner 7 is higher than that of the outer burner 4, so that molten matters are prevented from flowing backwards into the inner burner. The inner burner can be a conventional burner which is the same as the outer burner, and the installation heights of the inner burner and the outer burner on the furnace body are conventional choices of those skilled in the art.
The middle lower end of the furnace body is provided with a bell-jar type inner furnace wall 9, and the side wall of the bell-jar type inner furnace wall 9 is provided with an inner burner 7. The bell-shaped inner furnace wall 9 gives the bath a ring trough shape.
The embodiment is suitable for large-scale ironmaking blast furnaces. Through the combined action of the inner burner and the outer burner, the problem that a smelting delay area (or called dead area) is easily formed at the smelting central part of the common blast smelting furnace can be solved, the non-uniform smelting state is improved, the yield and the quality are improved, and the economic benefit is improved.
Example 2
As shown in fig. 2, the furnace comprises a furnace body, wherein the furnace body comprises a furnace wall 1, a furnace top 2, a molten pool 3 and an outer burner 4 arranged on the furnace wall 1, a feed inlet 5 is arranged on the furnace top 2, a molten product discharge port 6 is arranged on the side wall of the molten pool 3, a smoke exhaust port 8 is arranged on the side wall of the upper part of the furnace top 2 or the furnace wall 1, the inner burner 10 of the furnace body is arranged in the furnace body, and the horizontal height of the nozzle of the inner burner 10 of the spray gun type is higher than that of the outer burner 4, so that molten substances are prevented from flowing backwards into the inner burner. The mounting height of the inner burner and the outer burner in the furnace body is a routine choice for the person skilled in the art.
The middle lower part of the furnace body is provided with a spray gun type inner burner which extends into the furnace body from the bottom of the melting tank, and the spray gun type inner burner is also provided with a mounting facility which is selected conventionally by technicians in the field. If the installation facility or the installation space is available or not, the space at the bottom of the molten pool is occupied by the refractory materials and the cooling facility completely without space so that the molten pool is in a circular groove shape, and the nozzle of the spray gun type inner burner is in an inclined downward or horizontal direction.
The embodiment is suitable for small and medium-sized furnaces which cannot be provided with bell-jar type inner furnace walls. Through the combined action of the inner burner and the outer burner, the uneven smelting state is improved, the yield and the quality are improved, and the economic benefit is improved.
Example 3
As shown in fig. 3, the furnace comprises a furnace body, wherein the furnace body comprises a furnace wall 1, a furnace top 2, a molten pool 3 and an outer burner 4 arranged on the furnace wall 1, a feed inlet 5 is arranged on the furnace top 2, a molten product discharge port 6 is arranged on the side wall of the molten pool 3, a smoke exhaust port 8 is arranged on the side wall of the upper part of the furnace top 2 or the furnace wall 1, the inner burner 10 is arranged in the furnace body, and the horizontal height of the nozzle of the inner burner 10 is higher than that of the outer burner 4, so that molten substances are prevented from flowing backwards into the inner burner. The mounting height of the inner burner and the outer burner in the furnace body is a routine choice for the person skilled in the art.
The furnace is characterized in that a spray gun type inner burner 10 is arranged at the middle lower part of the furnace body, the spray gun type inner burner extends into the furnace body from the furnace top, and the nozzle direction of the spray gun type inner burner 10 is vertically downward or obliquely downward or horizontally.
The embodiment is suitable for small and medium-sized furnaces which cannot be provided with bell-jar type inner furnace walls. Through the combined action of the inner burner and the outer burner, the uneven smelting state is improved, the yield and the quality are improved, and the economic benefit is improved.
Claims (2)
1. The internal and external burner blast smelting furnace is characterized by comprising a furnace body, wherein the furnace body comprises a furnace wall (1), a furnace top (2) and a molten pool (3), an external burner (4) is arranged on the furnace wall (1), a charging hole (5) is arranged on the furnace top (2), a molten product discharge port (6) is formed in the side wall of the molten pool (3), a smoke discharge port (8) is formed in the upper part of the furnace top (2) or the furnace wall (1), a conventional inner burner (7) or a spray gun type inner burner (10) is arranged inside the furnace body, when the furnace body is a large blast smelting furnace, the conventional inner burner (7) is adopted, a bell-shaped inner furnace wall (9) is arranged in the middle of the lower end of the furnace body, the conventional inner burner (7) is arranged on the bell-shaped inner furnace wall (9), and the horizontal height of the conventional inner burner (7) is higher than that of the external, the nozzle direction is the slope downwards or the horizontal direction, works as the stove body is middle-size and small-size blast smelting stove, adopts nozzle (10) in the spray gun formula, nozzle (10) in the spray gun formula set up on stove bottom (3) or furnace roof (2), extends the stove body in, and the nozzle level is higher than outer nozzle (4), and the nozzle direction is perpendicular downwards or slope downwards or the horizontal direction.
2. An internal and external burner blast smelting furnace according to claim 1, characterized in that the conventional internal burner (7) is the same as or similar to the external burner (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011236486.0A CN112344737A (en) | 2020-11-09 | 2020-11-09 | Internal and external burner blast smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011236486.0A CN112344737A (en) | 2020-11-09 | 2020-11-09 | Internal and external burner blast smelting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112344737A true CN112344737A (en) | 2021-02-09 |
Family
ID=74429141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011236486.0A Pending CN112344737A (en) | 2020-11-09 | 2020-11-09 | Internal and external burner blast smelting furnace |
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| Country | Link |
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| CN (1) | CN112344737A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201648423U (en) * | 2010-04-26 | 2010-11-24 | 攀钢集团钢铁钒钛股份有限公司 | Blast furnace |
| CN110106366A (en) * | 2019-05-20 | 2019-08-09 | 海安海太铸造有限公司 | A kind of efficient side-blown smelting furnace |
| CN110145936A (en) * | 2019-05-20 | 2019-08-20 | 海安海太铸造有限公司 | A kind of smelting furnace |
| CN210463998U (en) * | 2019-08-01 | 2020-05-05 | 叁藩创新(杭州)科技有限公司 | Horizontal jet smelting furnace |
| CN211177920U (en) * | 2019-12-24 | 2020-08-04 | 宜兴曜源科技发展有限公司 | Sainuo top-blown furnace |
| CN214276499U (en) * | 2020-11-09 | 2021-09-24 | 赵天赐 | Internal and external burner blast smelting furnace |
-
2020
- 2020-11-09 CN CN202011236486.0A patent/CN112344737A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201648423U (en) * | 2010-04-26 | 2010-11-24 | 攀钢集团钢铁钒钛股份有限公司 | Blast furnace |
| CN110106366A (en) * | 2019-05-20 | 2019-08-09 | 海安海太铸造有限公司 | A kind of efficient side-blown smelting furnace |
| CN110145936A (en) * | 2019-05-20 | 2019-08-20 | 海安海太铸造有限公司 | A kind of smelting furnace |
| CN210463998U (en) * | 2019-08-01 | 2020-05-05 | 叁藩创新(杭州)科技有限公司 | Horizontal jet smelting furnace |
| CN211177920U (en) * | 2019-12-24 | 2020-08-04 | 宜兴曜源科技发展有限公司 | Sainuo top-blown furnace |
| CN214276499U (en) * | 2020-11-09 | 2021-09-24 | 赵天赐 | Internal and external burner blast smelting furnace |
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