CN108929930A - Pool side blowing iron furnace - Google Patents
Pool side blowing iron furnace Download PDFInfo
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- CN108929930A CN108929930A CN201710388734.5A CN201710388734A CN108929930A CN 108929930 A CN108929930 A CN 108929930A CN 201710388734 A CN201710388734 A CN 201710388734A CN 108929930 A CN108929930 A CN 108929930A
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- Prior art keywords
- oxygen
- coal
- coal lance
- lance
- iron
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B11/00—Making pig-iron other than in blast furnaces
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Manufacture Of Iron (AREA)
Abstract
The invention discloses pool side blowing iron furnaces, including ontology and the first to the 5th oxygen-coal lance, wherein the top of the ontology has feeding channel and exhaust gases passes, the bottom of the ontology defines molten bath, and the molten bath is divided into iron pelagic division, slag blanket area and coke layer area along lower upwardly direction；Described first to the 5th oxygen-coal lance is each passed through the side wall of the ontology and the outlet end of the described first to the 5th oxygen-coal lance is made separately to extend to the intersection in the slag blanket area, the coke layer area or the slag blanket area and the coke layer area.The material in coke layer area and slag blanket area in molten bath can effectively be reinforced using pool side blowing iron furnace to stir, and then significantly improve ironmaking efficiency.
Description
Technical field
The invention belongs to the fields of smelting iron, in particular to pool side blowing iron furnace.
Background technique
At this stage, blast furnace process is that China mainly produces iron equipment, although China grasps modern advanced blast-furnace technique substantially,
Unit construction investment and production cost are relatively low, but the problems such as long flow path, low efficiency, energy consumption height and environmental pollution makes mesh
Preceding people are discontented with blast furnace technology there are various, therefore existing ironmaking technology needs are further perfect.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is proposition pool side blowing iron furnace, can effectively reinforce coke layer area in molten bath using pool side blowing iron furnace
With the agitation of material in slag blanket area, and then ironmaking efficiency is significantly improved.
According to an aspect of the present invention, the invention discloses a kind of pool side blowing iron furnaces, including：
The top of ontology, the ontology has feeding channel and exhaust gases passes, and the bottom of the ontology defines molten bath, institute
It states molten bath and is divided into iron pelagic division, slag blanket area and coke layer area along lower upwardly direction；
First to the 5th oxygen-coal lance, the described first to the 5th oxygen-coal lance are each passed through the side wall of the ontology and make
The outlet end of described first to the 5th oxygen-coal lance separately extends to the slag blanket area, the coke layer area or institute
State the intersection in slag blanket area Yu the coke layer area.
Pool side proposed by the present invention blows iron furnace, by the way that the first to the 5th oxygen-coal lance is arranged, can to slag blanket area,
The intersection in coke layer area or slag blanket area and coke layer area sprays into the mixture of oxygen and fine coal, it is possible thereby to significantly increase coke
Reduction effect in floor area, while the iron ore not restored sufficiently remaining in slag blanket area is further restored；In addition, by adopting
It is sent into oxygen and fine coal into molten bath with injection method, can also effectively reinforce the agitation of material in molten bath, further increase iron
Reduction effect.As a result, by using the pool side blowing iron furnace of the above embodiment of the present invention, ironmaking efficiency can be significantly improved
And economic benefit.
In addition, pool side blowing iron furnace according to the above embodiment of the present invention can also have following additional technology special
Sign：
In some embodiments of the invention, first oxygen-coal lance is penetrated by the first side wall of the ontology front end,
Second oxygen-coal lance and third oxygen-coal lance are penetrated by the second sidewall adjacent with the first side wall, the 4th oxygen-coal lance
It is penetrated with the 5th oxygen-coal lance by the third side wall adjacent with the first side wall, wherein second oxygen-coal lance and institute
The 4th oxygen-coal lance is stated to be arranged adjacent to first oxygen-coal lance.Thus, it is possible to keep the blowing of oxygen and fine coal more uniform, and
Keep momentum diffusion in molten bath relatively uniform, and then can effectively improve the reduction efficiency of iron.
In some embodiments of the invention, the first to the 5th oxygen-coal lance extends along direction inwardly downward, and and water
The angle of plane is 45 °.Thus, it is possible to further strengthen the agitation of surrounding material in molten bath, increase stirring power.
In some embodiments of the invention, first oxygen-coal lance, the third oxygen-coal lance and the described 5th
It is in 120 ° of angles between the extended line of the projection of oxygen-coal lance.Expand thus, it is possible to further increase momentum in blowing and molten bath
Scattered uniformity accelerates the reduction of iron.
In some embodiments of the invention, the projection difference of second oxygen-coal lance and the 4th oxygen-coal lance
Perpendicular to the projection of first oxygen-coal lance.Thus, it is possible to further increase momentum in blowing and molten bath spread it is uniform
Property, accelerate the reduction of iron.
In some embodiments of the invention, the projection of second oxygen-coal lance and the 4th oxygen-coal lance is located at
In straight line.Thus, it is possible to keep the distribution of oxygen-coal lance more symmetrical, the uniformity that momentum is spread in blowing and molten bath is more
It is good.
In some embodiments of the invention, the pool side blowing iron furnace further comprises：Pure oxygen spray gun, the pure oxygen
Spray gun is penetrated by the first side wall of the ontology front end and extends to the outlet end of the pure oxygen spray gun in the feeding channel.
Thus, it is possible to further speed up the reduction reaction of iron.
In some embodiments of the invention, the pool side blowing iron furnace further comprises：Control system, the control
System is connected with the pure oxygen spray gun and first to the 5th oxygen-coal lance respectively, and the control system is suitable for independently
Ground controls the switch and the pure oxygen spray gun and described first to of the pure oxygen spray gun and the described first to the 5th oxygen-coal lance
The injecting velocity of five oxygen-coal lances.Control system can accurately be controlled automatically according to the real reaction situation in iron-smelting furnace as a result,
Blowing flow, injecting velocity of percentage and fine coal of oxygen and fine coal etc. in oxygen-coal lance of pure oxygen processed, keep spray gun total
Flow can also complete the iron reduction of molten bath zone well in the case where very little, and not easily cause momentum diffusion uneven, have
Effect reduces slag splash and corrodes furnace lining, extends converter life.
In some embodiments of the invention, the blowing flow of the described first to the 5th oxygen-coal lance is separately
0-500m3/ h, oxygen content are separately 30-100%, and the injecting velocity of fine coal is separately 100-300kg/h.
Thus, it is possible to further according in iron-smelting furnace real reaction situation control oxygen and fine coal percentage, blowing flow and
The injecting velocity of fine coal.
In some embodiments of the invention, the blowing flow of the pure oxygen spray gun is 0-300m3/h.Thus, it is possible into
One step controls the blowing flow of pure oxygen according to the real reaction situation in iron-smelting furnace.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of pool side blowing iron furnace according to an embodiment of the invention.
Fig. 2 is the body construction schematic diagram of pool side blowing iron furnace according to an embodiment of the invention.
Fig. 3 is the cross-sectional view in the molten bath of pool side blowing iron furnace according to an embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
According to an aspect of the present invention, the invention discloses a kind of pool side blowing iron furnaces, as shown in Figure 1, including：This
Body 100 and oxygen-coal lance 200.Wherein, the top of ontology 100 has feeding channel 110 and exhaust gases passes 120, ontology 100
Bottom defines molten bath 130, and molten bath 130 is divided into iron pelagic division 131, slag blanket area 132 and coke layer area along lower upwardly direction
133；Oxygen-coal lance 200 includes the first to the 5th oxygen-coal lance (210-250), the first to the 5th oxygen-coal lance (210-250)
It is each passed through the side wall 140 of ontology 100 and the outlet end of the first to the 5th oxygen-coal lance is made separately to extend to slag blanket area
132, the intersection in coke layer area 133 or slag blanket area 132 and coke layer area 133.
Pool side proposed by the present invention blows iron furnace can be to slag blanket area by the way that the first to the 5th oxygen-coal lance is arranged
132, the intersection in coke layer area 133 or slag blanket area 132 and coke layer area 133 sprays into the mixture of oxygen and fine coal, thus may be used
To significantly increase the reduction effect in coke layer area 133, at the same make the iron ore not restored sufficiently remaining in slag blanket area 132 into
The reduction of one step；In addition, being sent into oxygen and fine coal into molten bath 130 by using injection method, it can also effectively reinforce molten bath 130
The agitation of interior surrounding material increases stirring power, further increases the reduction effect of iron.As a result, by using the above-mentioned reality of the present invention
The pool side blowing iron furnace for applying example, can significantly improve ironmaking efficiency, have good economy.
The pool side blowing iron furnace of the above embodiment of the present invention is described in detail below with reference to Fig. 1-3 pairs.
According to an embodiment of the invention, the first oxygen-coal lance 210 can be by the first side of 100 front end of ontology with reference to Fig. 3
Wall 141 penetrates, and the second oxygen-coal lance 220 and third oxygen-coal lance 230 can be by the second sidewalls adjacent with the first side wall 141
142 penetrate, and the 4th oxygen-coal lance 240 and the 5th oxygen-coal lance 250 can be by the third side walls adjacent with the first side wall 141
143 penetrate, wherein the second oxygen-coal lance 220 and the 4th oxygen-coal lance 240 can neighbouring first oxygen-coal lance 210 settings.
Specific example according to the present invention can be in molten bath 130 since 130 front end portion of molten bath is adjacent with feeding channel 110 in the longitudinal direction
Front end portion forms material heap, and reduction reaction occurs in 130 surrounding of molten bath in addition to material heap, and central reaction is seldom, and molten bath 130
Rifle condition is inserted because structural factor does not have in rear end, and the arrangement of above-mentioned oxygen-coal lance of the invention can make oxygen and fine coal as a result,
Blowing it is more uniform, and make in molten bath 130 momentum diffusion relatively uniform, and then can effectively improve the reduction efficiency of iron.
According to a particular embodiment of the invention, the first to the 5th oxygen-coal lance extends along direction inwardly downward, and and water
The angle of plane is 45 °.Since 130 front end portion of molten bath will form material heap, reduction reaction occurs molten in addition to material heap
130 surrounding of pond, central reaction is seldom, inventors have found that when the first to the 5th oxygen-coal lance extends along direction inwardly downward, and
It when there is certain angle with horizontal plane, can effectively reinforce the agitation of surrounding in molten bath 130, increase stirring power, especially when the
When the angle of one to the 5th oxygen-coal lance and horizontal plane is 45 °, stirring for surrounding material in molten bath 130 can be further strengthened
It is dynamic, significantly increase stirring power, and then significantly improve the reduction efficiency of iron.
According to a particular embodiment of the invention, the first to the 5th oxygen-coal lance can be independent according to the actual situation
The blowing for carrying out oxygen and fine coal, can also be combined blowing according to the actual situation.
According to a particular embodiment of the invention, with reference to Fig. 3, the first oxygen-coal lance 210, third oxygen-coal lance 230 and
It is in 120 ° of angles between the extended line of the projection of five oxygen-coal lances 250.Inventors have found that when closing the second oxygen-coal lance
220 and when four oxygen-coal lances 240, the first oxygen-coal lance 210, third oxygen-coal lance 230 and the 5th oxygen-coal lance 250 are thrown
It may be implemented to be centrosymmetrically arranged in 120 ° of angle distributions between the extended line of shadow, be conducive to further increase the uniform of blowing
Property, accelerate the reduction of iron.In addition, using above-mentioned 120 ° because rifle condition is inserted because structural factor does not have in 130 rear end of molten bath
The distribution mode of angle can effectively avoid drawbacks described above, and can equally further increase the uniformity of momentum diffusion.
According to an embodiment of the invention, with reference to Fig. 3, the projection point of the second oxygen-coal lance 220 and the 4th oxygen-coal lance 240
Not perpendicular to the projection of the first oxygen-coal lance 210.Thus, it is possible to further increase momentum in blowing and molten bath 130 spread it is equal
Even property, accelerates the reduction of iron.According to a particular embodiment of the invention, the second oxygen-coal lance 220 and the 4th oxygen-coal lance 240
Projection can be located in straight line.Thus, it is possible to keep the distribution of oxygen-coal lance more symmetrical, momentum in blowing and molten bath 130
The uniformity of diffusion is more preferable.
According to a particular embodiment of the invention, with reference to Fig. 1, pool side blowing iron furnace be may further include：Pure oxygen spray gun
150, pure oxygen spray gun 150 penetrated by the first side wall 141 of 100 front end of ontology and make the outlet end of pure oxygen spray gun 150 extend into
Expect in channel 110.It, can be logical to pan feeding according to the actual conditions in production process by setting pure oxygen spray gun 150 in the present invention
Road 110 sprays into oxygen, further speeds up the reduction reaction of iron.
According to a particular embodiment of the invention, pure oxygen spray gun 150 can be parallel with the first oxygen-coal lance 210 in the longitudinal direction
Setting, thus, it is possible to further increase the reduction effect of iron.
According to a particular embodiment of the invention, pool side blowing iron furnace may further include：Control system, control system
It is connected respectively with pure oxygen spray gun 150 and the first to the 5th oxygen-coal lance, control system is suitable for separately controlling pure oxygen spray gun
150 and first to the 5th oxygen-coal lance switch and pure oxygen spray gun 150 and the first to the 5th oxygen-coal lance injecting velocity.This
The blowing of pure oxygen can accurately be controlled in invention automatically according to the real reaction situation in iron-smelting furnace by setting control system
Flow, the injecting velocity of percentage and fine coal etc. of oxygen and fine coal in oxygen-coal lance, thus, it is possible to make spray gun total flow
The iron reduction in 130 region of molten bath can also be completed well in the case where very little, and do not easily cause momentum diffusion uneven, effectively
It reduces slag splash and corrodes furnace lining, extend converter life.
According to a particular embodiment of the invention, the blowing flow of the first to the 5th oxygen-coal lance is separately 0-
500m3/ h, oxygen content are separately 30-100%, and the injecting velocity of fine coal is separately 100-300kg/h.By
This, can be further according to percentage, blowing flow and the powder of real reaction situation control oxygen and fine coal in iron-smelting furnace
The injecting velocity of coal.
According to a particular embodiment of the invention, the blowing flow of pure oxygen spray gun is 0-300m3/h.Thus, it is possible to further
According to the blowing flow of the real reaction situation control pure oxygen in iron-smelting furnace.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
It can be combined in any suitable manner in a or multiple embodiment or examples.In addition, without conflicting with each other, the technology of this field
The feature of different embodiments or examples described in this specification and different embodiments or examples can be combined by personnel
And combination.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
- The iron furnace 1. a kind of pool side blows, which is characterized in that including：Ontology, the top of the ontology have feeding channel and exhaust gases passes, and the bottom of the ontology defines molten bath, described molten Pond is divided into iron pelagic division, slag blanket area and coke layer area along lower upwardly direction；First to the 5th oxygen-coal lance, the described first to the 5th oxygen-coal lance are each passed through the side wall of the ontology and make described The outlet end of first to the 5th oxygen-coal lance separately extends to the slag blanket area, the coke layer area or the slag The intersection in floor area and the coke layer area.
- The iron furnace 2. pool side according to claim 1 blows, which is characterized in that first oxygen-coal lance is by described The first side wall of body front end penetrates, and the second oxygen-coal lance and third oxygen-coal lance are by second side adjacent with the first side wall Wall penetrates, and the 4th oxygen-coal lance and the 5th oxygen-coal lance are penetrated by the third side wall adjacent with the first side wall, wherein institute It states the second oxygen-coal lance and the 4th oxygen-coal lance is arranged adjacent to first oxygen-coal lance.
- The iron furnace 3. pool side according to claim 2 blows, which is characterized in that the first to the 5th oxygen-coal lance along to Inside extend in downward direction, and is 45 ° with the angle of horizontal plane.
- The iron furnace 4. pool side according to claim 3 blows, which is characterized in that first oxygen-coal lance, the third It is in 120 ° of angles between the extended line of the projection of oxygen-coal lance and the 5th oxygen-coal lance.
- The iron furnace 5. pool side according to claim 4 blows, which is characterized in that second oxygen-coal lance and described the The projection of four oxygen-coal lances is respectively perpendicular to the projection of first oxygen-coal lance.
- The iron furnace 6. pool side according to claim 5 blows, which is characterized in that second oxygen-coal lance and described the The projection of four oxygen-coal lances is located in straight line.
- The iron furnace 7. pool side according to claim 6 blows, which is characterized in that further comprise：Pure oxygen spray gun, the pure oxygen spray gun are penetrated by the first side wall of the ontology front end and make the outlet end of the pure oxygen spray gun It extends in the feeding channel.
- The iron furnace 8. pool side according to claim 7 blows, which is characterized in that further comprise：Control system, the control system is connected with the pure oxygen spray gun and first to the 5th oxygen-coal lance respectively, described Control system is suitable for separately controlling the switch of the pure oxygen spray gun and first to the 5th oxygen-coal lance and described pure The injecting velocity of oxygen spray gun and first to the 5th oxygen-coal lance.
- The iron furnace 9. pool side according to claim 8 blows, which is characterized in that the described first to the 5th oxygen-coal lance Being blown flow is separately 0-500m3/ h, oxygen content are separately 30-100%, the injecting velocity difference of fine coal It independently is 100-300kg/h.
- The iron furnace 10. pool side according to claim 9 blows, which is characterized in that the blowing flow of the pure oxygen spray gun is 0-300m3/h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388734.5A CN108929930B (en) | 2017-05-27 | 2017-05-27 | Side-blown molten bath iron-smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388734.5A CN108929930B (en) | 2017-05-27 | 2017-05-27 | Side-blown molten bath iron-smelting furnace |
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| Publication Number | Publication Date |
|---|---|
| CN108929930A true CN108929930A (en) | 2018-12-04 |
| CN108929930B CN108929930B (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710388734.5A Active CN108929930B (en) | 2017-05-27 | 2017-05-27 | Side-blown molten bath iron-smelting furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115652010A (en) * | 2022-09-29 | 2023-01-31 | 攀钢集团西昌钢钒有限公司 | Efficient heat exchange smelting reduction iron-making method and device |
| CN115652007A (en) * | 2022-09-29 | 2023-01-31 | 攀钢集团西昌钢钒有限公司 | Novel smelting reduction iron-making method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848682A (en) * | 2015-05-11 | 2015-08-19 | 中国恩菲工程技术有限公司 | Smelting furnace of molten bath |
| CN105296699A (en) * | 2015-10-29 | 2016-02-03 | 东北大学 | Smelting reduction iron-making device and method for avoiding re-oxidation of pre-reduction ores |
| CN105698529A (en) * | 2015-10-27 | 2016-06-22 | 中国恩菲工程技术有限公司 | Improved type side-blowing molten pool smelting furnace |
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2017
- 2017-05-27 CN CN201710388734.5A patent/CN108929930B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848682A (en) * | 2015-05-11 | 2015-08-19 | 中国恩菲工程技术有限公司 | Smelting furnace of molten bath |
| CN105698529A (en) * | 2015-10-27 | 2016-06-22 | 中国恩菲工程技术有限公司 | Improved type side-blowing molten pool smelting furnace |
| CN105296699A (en) * | 2015-10-29 | 2016-02-03 | 东北大学 | Smelting reduction iron-making device and method for avoiding re-oxidation of pre-reduction ores |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115652010A (en) * | 2022-09-29 | 2023-01-31 | 攀钢集团西昌钢钒有限公司 | Efficient heat exchange smelting reduction iron-making method and device |
| CN115652007A (en) * | 2022-09-29 | 2023-01-31 | 攀钢集团西昌钢钒有限公司 | Novel smelting reduction iron-making method and device |
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| Publication number | Publication date |
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| CN108929930B (en) | 2020-10-27 |
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Effective date of registration: 20211230 Address after: Room 528, No. 67, Fucheng Road, Haidian District, Beijing 100142 Patentee after: Beijing Hengyi Zhengxing Investment Co.,Ltd. Address before: Room 1401, 14 / F, block B, Tiangong building, No.30 Xueyuan Road, Haidian District, Beijing 100083 Patentee before: BEIJING SHANTIE TECHNOLOGY Co.,Ltd. |
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