CN215373555U - Layered distribution type sintering pre-cooling device - Google Patents
Layered distribution type sintering pre-cooling device Download PDFInfo
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- CN215373555U CN215373555U CN202120008956.1U CN202120008956U CN215373555U CN 215373555 U CN215373555 U CN 215373555U CN 202120008956 U CN202120008956 U CN 202120008956U CN 215373555 U CN215373555 U CN 215373555U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The utility model discloses a layered distributing type sintering and pre-cooling device, which comprises a hot-sinter ore slide barrel, wherein the side wall of the hot-sinter ore slide barrel is provided with a hot air outlet for extracting hot air to flow out, the upper end of the hot-sinter ore slide barrel forms a hot-ore inlet, the lower end of the hot-sinter ore slide barrel forms a hot-ore outlet, the hot-ore inlet and the hot-ore outlet are respectively used as cooling air inlets, the side wall of the hot-sinter ore slide barrel comprises a first side wall and a second side wall which are adjacent, the inner surface of the first side wall is connected with a first baffle, the inner surface of the second side wall is connected with a second baffle positioned below the first baffle, and the hot air outlet is arranged between the first baffle and the second baffle. The layered distribution type sintering pre-cooling device aims to solve the technical problems that in the prior art, a circular cooler is large in cooling air quantity and low in waste heat recovery efficiency in a sintering cooling process.
Description
Technical Field
The utility model relates to the technical field of sintering cooling devices, in particular to a layered distribution type sintering pre-cooling device.
Background
The iron and steel industry is the foundation and the pillar industry of national economy in China, the iron and steel smelting in China is mainly based on a long flow of sintering (pelletizing) coking-blast furnace-converter, more than 75% of blast furnace burden is from sintered ore, the sintering process is a high-energy consumption and high-pollution concentrated link in the iron and steel flow, the energy consumption accounts for 10% of the total energy consumption of the iron and steel metallurgy, the amount of discharged waste gas accounts for 50% of the total waste gas amount of the iron and steel industry, and the discharge of micron-sized fine particle dust, SOx, NOx, persistent organic matters, heavy metals and other pollutants in the waste gas all dominates the first place of the iron and steel industry. The sintered hot ore discharged by the existing sintering machine is usually cooled by a circular cooler, and the defects are mainly as follows: the cooling air quantity of the circular cooler is large, and the waste heat recovery efficiency is low.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Based on the technical scheme, the utility model provides a layered distribution type sintering and pre-cooling device, which aims to solve the technical problems of large cooling air quantity of a circular cooler and low waste heat recovery efficiency in the sintering and cooling process in the prior art.
(II) technical scheme
In order to solve the technical problem, the utility model provides a layered distribution type sintering and pre-cooling device, wherein the layered distribution type sintering and pre-cooling device comprises a hot-sinter ore chute, a hot air outlet for extracting hot air to flow out is formed in the side wall of the hot-sinter ore chute, a hot ore inlet is formed in the upper end of the hot-sinter ore chute, a hot ore outlet is formed in the lower end of the hot-sinter ore chute, the hot ore inlet and the hot ore outlet are respectively used as cooling air inlets, the side wall of the hot-sinter ore chute comprises a first side wall and a second side wall which are adjacent to each other, a first baffle is connected to the inner surface of the first side wall, a second baffle is connected to the inner surface of the second side wall and located below the first baffle, and the hot air outlet is arranged between the first baffle and the second baffle.
Preferably, the hot air outlet is located in the middle of the hot sinter ore chute in the vertical direction.
Preferably, the inner surface of the bottom end of the first side wall is connected with a third baffle plate, and the third baffle plate is located below the second baffle plate.
Preferably, the end of the upper surface of the first baffle plate, the end of the upper surface of the second baffle plate and the end of the upper surface of the third baffle plate are respectively provided with a wear-resistant block.
Preferably, the side wall of the hot sinter ore chute comprises a third side wall, the first side wall, the second side wall and the third side wall are adjacent in sequence, the third baffle plate is lower than the lower end of the third side wall, and the third baffle plate and the lower end of the third side wall form a downward hot ore outlet.
Preferably, the lower end of the side wall of the hot sinter ore chute is formed in a structure protruding to the outside of the third side wall.
Preferably, the cross section of the hot sinter ore chute is trapezoidal, the upper bottom of the trapezoid corresponds to the position above the side wall of the inner ring of the circular cooler, the lower bottom of the trapezoid corresponds to the position above the side wall of the outer ring of the circular cooler, and the lower bottom is longer than the upper bottom.
Preferably, the upper end of the hot sinter ore chute is connected with the discharge end of a crusher corresponding to the sintering machine, and the lower end of the hot sinter ore chute is connected with the feed end of the ring cooling machine.
(III) advantageous effects
Compared with the prior art, the utility model has the beneficial effects that:
the layered distribution type sintering and pre-cooling device can be arranged on a hot sintering ore falling path between the discharge end of a crusher corresponding to a sintering machine and the feed end of a ring cooling machine, and forms a two-stage cooling process with the ring cooling machine, the pre-cooling device can pre-cool materials and generate high-quality hot air, so that the cooling air quantity of the ring cooling machine is reduced by more than 15%, the energy-saving effect is achieved overall, and the waste heat recovery efficiency is improved.
The layered distribution type sintering pre-cooling device can enhance the dust removal effect of the sintering machine tail when arranged at the sintering machine tail, and even can reduce the dust removal air quantity;
the layered distribution type sintering pre-cooling device replaces a chute with a very high fall in the prior art, and the pre-cooling device can be filled with mineral materials, so that the falling distance of the mineral materials is greatly reduced, the falling loss of sintered ores is reduced, and the return ores are reduced;
in the preferred scheme, the cross section of the hot sinter ore chute is trapezoidal, so that the inner and outer rings of the circular cooler can be uniformly distributed, and the cooling efficiency is favorably improved.
Other advantageous effects of the present invention will be described in the following detailed description.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the utility model in any way, and in which:
FIG. 1 is an internal structure view of a sintering pre-cooling device with layered distribution in accordance with a preferred embodiment of the present invention;
FIG. 2 is a top cross-sectional view of a layered distribution sintering pre-cooling apparatus according to a preferred embodiment of the present invention;
FIG. 3 is a simplified top view of the assembly of the layered distribution sintering pre-cooling apparatus with the ring cooler of the preferred embodiment of the present invention;
fig. 4 is an installation application view of the layered distribution type sintering pre-cooling device of the preferred embodiment of the utility model.
Description of reference numerals:
1. sintering machine, 2, crusher, 3, circular cooler, 5, dedusting device, 6, exhaust fan, 7, wear-resistant block, 9, upper bottom, 10, lower bottom, 31, inner ring side wall, 32, outer ring side wall, 100, layered cloth type sintering pre-cooling device, 101, hot sinter chute, 102, hot air outlet, 103, hot ore inlet, 104, hot ore outlet, 105, first baffle plate, 106, second baffle plate, 107, first side wall, 108, second side wall, 109, third side wall, 110, fourth side wall, 111, and third baffle plate.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Referring to fig. 1 to 4, the present invention discloses a layered distribution type sintering and pre-cooling device 100, wherein the layered distribution type sintering and pre-cooling device 100 comprises a hot-sinter chute 101, the side wall of the hot-sinter chute 101 is provided with a hot air outlet 102 for outflow of extracted hot air, the upper end of the hot-sinter chute 101 forms a hot-ore inlet 103, the lower end of the hot-sinter chute 101 forms a hot-ore outlet 104, the hot-ore inlet 103 and the hot-ore outlet 104 are respectively used as cooling air inlets, the side wall of the hot-sinter chute 101 comprises a first side wall 107 and a second side wall 108 which are adjacent to each other, the inner surface of the first side wall 107 is connected with a first baffle 105, the inner surface of the second side wall 108 is connected with a second baffle 106 which is positioned below the first baffle 105, and the hot air outlet 102 is arranged between the first baffle 105 and the second baffle 106, the layered distribution type sintering and pre-cooling device 100 can be arranged between the discharge end of a crusher 2 corresponding to the crusher 1 and the feed end of the circular cooler 3 The hot sinter falling path can be connected to a waste heat recovery system through the dust removal device 5 and the exhaust fan 6 in sequence, and forms a two-stage cooling process with the circular cooler 3, the pre-cooling device can pre-cool materials and generate high-quality hot air, so that the cooling air quantity of the circular cooler 3 is reduced by more than 15%, in addition, the first baffle plate 105 and the second baffle plate 106 are arranged on different side walls, the first baffle plate 105 and the second baffle plate 106 can enable the materials to generate segregation effect when flowing, large materials firstly fall onto the circular cooler 3 and are distributed on the bottom layer of the circular cooler 3, small cloth falls onto the circular cooler 3 at the back and is distributed on the upper layer of the circular cooler 3, and therefore cooling air flow can penetrate through the sinter to cool the sinter, and the aim of layered distribution is achieved.
According to the preferred embodiment of the present invention, the hot air outlet 102 is located at the middle of the hot-sinter chute 101 in the vertical direction, so that the cooling air inlets at the upper and lower ends of the hot-sinter chute 101 enter the hot-sinter chute 101 to pass through the bed of hot-sinter at approximately the same penetration distance (thickness), facilitating the acquisition of high-quality hot air as needed.
Further, the inner surface of the bottom end of the first side wall 107 is connected with a third baffle plate 111, the third baffle plate 111 is located below the second baffle plate 106, and of course, even if the third baffle plate 111 is not provided or more baffle plates are provided, the present invention is within the protection scope of the present invention, another advantage of the baffle plates is that the cooling air entering from the upper end of the hot-sinter ore chute 101 bypasses the first baffle plate 105 and reaches the hot-blast outlet 102, and the cooling air entering from the lower end of the hot-sinter ore chute 101 bypasses the second baffle plate 106 and reaches the hot-blast outlet 102, and the cooling air increases the contact route with the material layer of the hot-sinter ore during the bypassing process, so that the material layer penetration distance is longer, and the hot-sinter ore can be cooled more efficiently.
Further, an end portion of the upper surface of the first baffle plate 105, an end portion of the upper surface of the second baffle plate 106, and an end portion of the upper surface of the third baffle plate 111 are provided with wear-resistant blocks 7 (for example, high-hardness alloy or the like) respectively to prevent wear by the hot-sintered ore.
According to the embodiment of the present invention, the side walls of the hot sinter chute 101 include a third side wall 109, and the first side wall 107, the second side wall 108 and the third side wall 109 are adjacent in sequence, and more specifically, the side walls further include a fourth side wall 110, and the first side wall 107, the second side wall 108, the third side wall 109 and the fourth side wall 110 enclose the hot sinter chute 101 having a quadrangular cross section, but it is also possible that the number of the side walls is increased or decreased appropriately to form other polygonal cross sections, the third flow plate 111 is lower than the lower end of the third side wall 109, and the third flow plate 111 and the lower end of the third side wall 109 form the hot ore outlet 104 inclined downward.
According to the embodiment of the present invention, the lower end of the side wall of the hot-sinter ore chute 101 is formed to protrude outward of the third side wall 109, but even if the lower end of the side wall of the hot-sinter ore chute 101 does not protrude outward of the third side wall 109, it would fall within the scope of the present invention.
According to the preferred embodiment of the utility model, the cross section of the hot sinter ore slide barrel 101 is trapezoidal, the upper bottom 9 of the trapezoid corresponds to the position above the inner ring side wall 31 of the ring cooling machine 3, the lower bottom 10 of the trapezoid corresponds to the position above the outer ring side wall 32 of the ring cooling machine 3, and the lower bottom 10 is longer than the upper bottom 9, that is, the hot sinter ore slide barrel 101 has a larger blanking space on the outer ring side of the ring cooling machine 3, so that the special structure of the ring cooling machine 3 is perfectly matched and adapted, the inner ring and the outer ring of the ring cooling machine 3 are uniformly distributed, the cooling efficiency is improved, and the materials fall into a granulating system after passing through the ring cooling machine 3, and finally finished sinter ore is formed.
As a specific connection position, the upper end of the hot sinter ore chute 101 can be connected with the discharge end of the crusher 2 corresponding to the sintering machine 1, and the lower end of the hot sinter ore chute 101 can be connected with the feed end of the ring cooler 3.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the utility model, and such modifications and variations fall within the scope defined by the appended claims.
Claims (8)
1. The layered distributing type sintering and pre-cooling device is characterized by comprising a hot-sinter ore chute, wherein a hot air outlet for extracting hot air to flow out is formed in the side wall of the hot-sinter ore chute, a hot-ore inlet is formed in the upper end of the hot-sinter ore chute, a hot-ore outlet is formed in the lower end of the hot-sinter ore chute, the hot-ore inlet and the hot-ore outlet are respectively used as cooling air inlets, the side wall of the hot-sinter ore chute comprises a first side wall and a second side wall which are adjacent to each other, a first baffle is connected to the inner surface of the first side wall, a second baffle located below the first baffle is connected to the inner surface of the second side wall, and the hot air outlet is arranged between the first baffle and the second baffle.
2. The layered distribution type sintering pre-cooling device as claimed in claim 1, wherein the hot air outlet is located in the middle of the hot sinter ore chute in the vertical direction.
3. The layered material distribution type sintering pre-cooling device as claimed in claim 1, wherein a third baffle plate is connected to the inner surface of the bottom end of the first side wall, and the third baffle plate is located below the second baffle plate.
4. The layered distribution type sintering pre-cooling device as claimed in claim 3, wherein the end of the upper surface of the first baffle plate, the end of the upper surface of the second baffle plate and the end of the upper surface of the third baffle plate are respectively provided with a wear-resistant block.
5. The layered distribution type sintering pre-cooling device as claimed in claim 3, wherein the side wall of the hot sinter ore chute comprises a third side wall, the first side wall, the second side wall and the third side wall are adjacent in sequence, the third deflector is lower than the lower end of the third side wall, and the third deflector and the lower end of the third side wall form a hot ore outlet which is inclined downwards.
6. The layered material distribution type sintering pre-cooling device as claimed in claim 5, wherein the lower end of the side wall of the hot sinter ore chute is formed in a structure protruding to the outside of the third side wall.
7. The layered distribution type sintering and pre-cooling device as claimed in any one of claims 1 to 6, wherein the cross section of the hot sinter ore chute is trapezoidal, the upper bottom of the trapezoid corresponds to the upper position of the side wall of the inner ring of the circular cooler, the lower bottom of the trapezoid corresponds to the upper position of the side wall of the outer ring of the circular cooler, and the lower bottom is longer than the upper bottom.
8. The layered material distribution type sintering pre-cooling device as claimed in any one of claims 1 to 6, wherein the upper end of the hot sinter ore chute is connected with the discharge end of a crusher corresponding to a sintering machine, and the lower end of the hot sinter ore chute is connected with the feed end of a ring cooling machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120008956.1U CN215373555U (en) | 2021-01-05 | 2021-01-05 | Layered distribution type sintering pre-cooling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120008956.1U CN215373555U (en) | 2021-01-05 | 2021-01-05 | Layered distribution type sintering pre-cooling device |
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| CN215373555U true CN215373555U (en) | 2021-12-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353543A (en) * | 2022-01-20 | 2022-04-15 | 山东钢铁集团日照有限公司 | Control method for efficiently utilizing waste heat of sintering circular cooler |
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2021
- 2021-01-05 CN CN202120008956.1U patent/CN215373555U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353543A (en) * | 2022-01-20 | 2022-04-15 | 山东钢铁集团日照有限公司 | Control method for efficiently utilizing waste heat of sintering circular cooler |
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