CN110645801A - Method and device for uniformly distributing materials of circular cooler - Google Patents
Method and device for uniformly distributing materials of circular cooler Download PDFInfo
- Publication number
- CN110645801A CN110645801A CN201910310075.2A CN201910310075A CN110645801A CN 110645801 A CN110645801 A CN 110645801A CN 201910310075 A CN201910310075 A CN 201910310075A CN 110645801 A CN110645801 A CN 110645801A
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- Prior art keywords
- chute
- circular cooler
- outlet
- uniformly distributing
- outer ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
- F27D15/0206—Cooling with means to convey the charge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D2003/0001—Positioning the charge
- F27D2003/0003—Positioning the charge involving a system for aligning the articles through a lateral guidance, e.g. funnel
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- 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
- F27M2003/04—Sintering
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a method for uniformly distributing materials for a circular cooler, which comprises the following specific steps: according to the condition of uneven distribution of the circular cooler, a first-stage step is additionally arranged at the chute outlet of a blanking chute of the circular cooler. The device has the characteristics of small transformation difficulty, simple structure, low price, convenience in installation and good effect, improves the uniformity of the thickness of the material layer, reduces the power consumption of the ring cooling machine, reduces the slipping risk of the friction wheel of the ring cooling machine, and improves the quality of sintered ores.
Description
Technical Field
The invention belongs to the technical field of sintering processes of metallurgical enterprises, and relates to a method and a device for uniformly distributing materials for a circular cooler.
Background
The circular cooler is widely applied to the sintering and pelletizing process of metallurgical enterprises. The circular cooler is used for cooling high-temperature sinter ore or high-temperature pellet ore. Generally, blast cooling is adopted, the blast pressurizes cold air, and the air passes through the air gap in the material layer of the high-temperature sintered ore or the high-temperature pellet ore on the circular cooler trolley, so that the high-temperature sintered ore or the high-temperature pellet ore is cooled. After the air passes through the high-temperature sintered ore or the high-temperature pellet ore, the temperature of the flue gas can be increased to 300-450 ℃. The high temperature flue gas is typically recycled for power generation. The uniformity of the material layer thickness of the high-temperature sinter or the high-temperature pellet on the trolley of the circular cooler has great influence on the cooling effect and the waste heat generating capacity of the circular cooler, if the uniformity of the material layer thickness is poor, the local wind throughput of the material layer is high, the smoke temperature for power generation is low, the local wind throughput of the material layer is low, and the cooling effect of the sinter or the pellet is poor.
In order to solve the problem of uneven material distribution of the circular cooler, relevant methods are not found through inquiring relevant patents and papers. It is easy to think that the method that is often adopted is to install a flat material plate on the upper end of the discharge hole of the receiving hopper of the circular cooler. The method for pressing the sinter by using the flat material plate to push the sinter flat has the following defects: 1. the resistance to the circular cooler is large, the power consumption of the circular cooler is increased, and the risk of slipping of a friction wheel of the circular cooler is increased; 2. the crushing rate of the sinter is increased, and the quality of the sinter is reduced.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the method and the device for uniformly distributing the material of the circular cooler, which have the characteristics of small transformation difficulty, simple structure, low price, convenient installation and good effect, improve the uniformity of the thickness of the material layer, reduce the power consumption of the circular cooler, reduce the slipping risk of a friction wheel of the circular cooler and improve the quality of sintered ore.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for uniformly distributing materials for a circular cooler comprises the following specific steps: according to the condition of uneven distribution of the circular cooler, a first-stage step is additionally arranged at the chute outlet of a blanking chute of the circular cooler.
Furthermore, the outer ring breast board of the material layer on the trolley of the ring cooling machine is higher than the inner ring breast board, and an acute-angle-shaped step is installed at the chute outlet of the feeding chute in a top view.
Furthermore, the outer ring breast board of the material layer on the circular cooler trolley is lower than the inner ring breast board, and an acute-angle-shaped step is installed at the chute outlet of the feeding chute in a top view.
Furthermore, the inner ring baffle plate and the outer ring baffle plate in the material layer on the trolley of the annular cooler are higher than the middle of the inner ring plate and the outer ring plate and lower than the middle of the inner ring plate and the outer ring plate, an obtuse-angle-shaped step is installed at the chute outlet of the discharging chute in the top view, two edges of the step are respectively parallel to the inner ring baffle plate and the outer ring baffle plate, and an obtuse angle formed by the two edges faces the outlet of the chute.
Furthermore, the height between the two lower breast boards of the inner and outer ring breast boards of the material layer on the circular cooler trolley is high, when seen from the top view, an obtuse-angle-shaped step is installed at the chute outlet of the blanking chute, two edges of the step are respectively contacted with the left end and the right end of the outlet of the chute, and the obtuse angle faces to one side away from the outlet of the chute.
A uniform distribution device applied to a method for uniformly distributing materials in a circular cooler is a step, an I-beam below a blanking chute extends outwards to serve as the foundation of a new step, a bottom plate is welded and installed on the extended I-beam, and the bottom plate is horizontally installed on the I-beam; one long edge of the bottom plate is installed close to the edge of the outlet of the discharging chute, a vertical plate is welded and installed on the other long edge of the bottom plate, and the wear-resistant end iron is installed and fixed on the vertical plate through bolts and nuts.
Further, the bottom plate is triangular.
Furthermore, the short edge of the bottom plate is 60-150mm away from the outer annular breast plate of the circular cooler.
Furthermore, in order to reinforce the vertical plate, a rib plate is welded between the vertical plate and the bottom plate.
The invention has the positive effects that:
the device has the characteristics of small transformation difficulty, simple structure, low price, convenience in installation and good effect, improves the uniformity of the thickness of the material layer, reduces the power consumption of the ring cooling machine, reduces the slipping risk of the friction wheel of the ring cooling machine, and improves the quality of sintered ores.
Drawings
FIG. 1 is a schematic diagram of the position relationship between a circular cooler and a feeding chute;
FIG. 2 is a schematic structural view of an outer ring material being higher than an inner ring material being lower;
FIG. 3 is a schematic structural view of an outer ring material with a lower outer ring material and an inner ring material with a higher inner ring material;
FIG. 4 is a schematic diagram of the inner and outer rings with a high material and a low material;
FIG. 5 is a schematic structural view of inner and outer rings with a low intermediate height;
FIG. 6 is a schematic view of the step installation;
fig. 7 is a cross-sectional view of fig. 6A-a.
In the figure: 1-circular cooler, 2-inner ring breast board, 3-outer ring breast board, 4-blanking chute, 5-chute outlet, 6-step, 7-wear-resistant end iron, 8-vertical board, 9-bolt, 10-rib plate, 11-bottom board and 12-I-beam.
Detailed Description
The present invention will be further described with reference to the following examples.
Referring to fig. 1, a method for uniformly distributing materials in a circular cooler 1 specifically comprises the following steps: according to the condition of uneven distribution of the circular cooler 1, a first-stage step 6 is additionally arranged at the chute outlet of the blanking chute 4 of the circular cooler 1.
Example 1
Referring to fig. 2, the outer ring fence 3 of the material layer on the trolley of the ring cooling machine 1 is higher than the inner ring fence 2, and when seen from the top view, an acute-angle-shaped step 6 is installed at the chute outlet of the blanking chute 4, the short edge of the step 6 is parallel to the outer ring fence 3 of the ring cooling machine 1, and the minor short edge is overlapped with the chute outlet 5.
Example 2
Referring to fig. 3, the material layer outer ring baffle 3 on the trolley of the circular cooler 1 is lower than the inner ring baffle 2, and an acute-angle-shaped step 6 is installed at the chute outlet of the blanking chute 4 in a top view, and the minor edge of the step 6, which is overlapped with the inner ring baffle 2, is overlapped with the chute outlet 5.
Example 3
Referring to fig. 4, the inner and outer material layer side plates 3 on the trolley of the ring cooling machine 1 are higher than the inner and outer side plates and lower than the middle of the inner and outer side plates, and when viewed from a top view, an obtuse-angle-shaped step 6 is installed at the chute outlet of the blanking chute 4, two edges of the step 6 are respectively parallel to the inner side plate 2 and the outer side plate 3, and an obtuse angle formed by the two edges faces the chute outlet 5.
Example 5
Referring to fig. 5, the material layer inner and outer ring baffle 3 on the trolley of the ring cooling machine 1 is higher than the two baffles, when seen from the top view, an obtuse angle shaped step 6 is installed at the chute outlet of the blanking chute 4, two edges of the step 6 are respectively contacted with the left end and the right end of the chute outlet 5, and the obtuse angle faces to one side far away from the chute outlet 5.
Example 6
The circular cooler 1 of the No. 5 sintering machine of a certain factory has poor cooling effect and low generated energy of waste heat recovery. The highest temperature of the sintered ore cooled by the circular cooler 1 reaches 390 ℃, and exceeds the required cooling requirement of being less than 150 ℃; by comparing the generated energy of the waste heat recovery of the circular cooler 1 of the No. 6 sintering machine and the circular cooler 1 of the sintering machine of the peripheral sintering plant, the waste heat power generation of the circular cooler 1 of the No. 5 sintering machine is about 1.5kwh/t lower.
For the problems that the cooling effect of the circular cooler 1 of the No. 5 sintering machine is poor and the generated energy of waste heat recovery is low, the conditions of raw materials, the control of production operation parameters, the air leakage of the circular cooler 1, the cloth height of the circular cooler 1, the cloth uniformity and the like are compared, and the charge level of the circular cooler 1 of the No. 5 sintering machine is found to be very uneven. The condition that the inner ring is low and the outer ring is high is presented, the material layer thickness of the inner ring is 300-400mm lower than that of the outer ring, so that the ventilation performance is different, the material of the inner ring is low, the ventilation is large, and the wind temperature is low; the outer ring material is high, the ventilation is small, the wind temperature is high, but the cooling effect is poor. The analysis shows that the uneven distribution of the material is a key factor influencing the poor cooling effect of the circular cooler 1 of the No. 5 sintering machine and the low power generation amount of the waste heat recovery.
The adopted reconstruction scheme is as follows: the position relation of the circular cooler 1 and the blanking chute 4 is shown as figure 1, a new step 6 is arranged below an original chute outlet 5 of the blanking chute 4, the installation position relation of the new step 6 is shown as figure 3, the installation structure schematic diagram of the new step is shown as figure 6, an I-shaped beam 12 below the blanking chute 4 extends out to serve as the base of the step 6, a bottom plate 11 is welded on the extended I-shaped beam 12, the length of each long side of the bottom plate 11 is 1900mm, the length of each short side of the triangle is 700mm, and the bottom plate 11 is horizontally arranged on the I-shaped beam 12; the distance between the short edge of the triangular bottom plate 11 and the outer ring baffle plate 3 of the circular cooler 1 is about 100 mm; one long edge of the triangular bottom plate 11 is installed close to the edge of the outlet 5 of the blanking chute 4, the vertical plate 8 is installed on the other long edge of the triangular bottom plate 11 in a welding mode, a rib plate 10 is installed between the vertical plate 8 and the bottom plate 11 in a welding mode for reinforcing the vertical plate 8, and the wear-resistant end iron 7 is installed and fixed on the vertical plate 8 through the bolt 9 and the nut 9.
After the transformation is finished, the material surface of the circular cooler 1 of the No. 5 sintering machine is flat, the highest temperature of the cooled sintering ore is reduced to 167 ℃, the generated energy of the circular cooler 1 of the No. 5 sintering machine is improved by about 1.5kwh/t after the transformation compared with that before the transformation, and the expected effect is achieved.
Referring to fig. 6 and 7, in the uniform distribution device applied to the method for uniformly distributing the material in the circular cooler 1, an i-beam 12 below a feeding chute 4 extends outwards to serve as a foundation of a new step 6, a bottom plate 11 is welded and installed on the extended i-beam 12, the lengths of the long sides of 2 triangular pieces are 1900mm, the length of the short side of each triangular piece is 700mm, and the bottom plate 11 is horizontally installed on the i-beam 12; one long edge of the triangular bottom plate 11 is arranged close to the edge of the outlet of the blanking chute 4, a vertical plate 8 is welded and arranged on the other long edge of the bottom plate 11, and the wear-resistant end iron 7 is fixedly arranged on the vertical plate 8 through a bolt 9 and a nut.
Further, the bottom plate 11 has a triangular shape.
Furthermore, the short edge of the bottom plate 11 is about 100mm away from the outer annular baffle plate 3 of the annular cooler 1.
Furthermore, in order to reinforce the vertical plate 8, a rib plate 10 is welded between the vertical plate 8 and the bottom plate 11.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A method for uniformly distributing materials for a circular cooler is characterized by comprising the following specific steps: according to the condition of uneven distribution of the circular cooler, a first-stage step is additionally arranged at the chute outlet of a blanking chute of the circular cooler.
2. The method for uniformly distributing materials in the circular cooler according to claim 1, characterized in that: the outer ring breast board of the material layer on the loop wheel machine of the ring cooling machine is high, the inner ring breast board is low, seen from the plan view, an acute step is installed at the chute outlet of the discharging chute, the short edge of the step is parallel to the outer ring breast board of the ring cooling machine, and the long edge is overlapped with the outlet of the chute.
3. The method for uniformly distributing materials in the circular cooler according to claim 1, characterized in that: the outer ring breast board of the material layer on the circular cooler trolley is low and the inner ring breast board is high, and when viewed from a top view, an acute step is installed at the chute outlet of the discharging chute, the short edge of the step is parallel to the inner ring breast board, and one long edge is overlapped with the outlet of the chute.
4. The method for uniformly distributing materials in the circular cooler according to claim 1, characterized in that: the inner ring breast board and the outer ring breast board in the material layer on the ring cooling machine trolley are higher than the inner ring board and the outer ring board, the middle of the inner ring board and the outer ring board is lower, an obtuse-angle-shaped step is installed at the chute outlet of the feeding chute in the top view, two edges of the step are parallel to the inner ring breast board and the outer ring breast board respectively, and an obtuse angle formed by the two edges faces the outlet of the chute.
5. The method for uniformly distributing materials in the circular cooler according to claim 1, characterized in that: the material layer inner and outer ring breast boards on the ring cooling machine trolley are high between two low breast boards, and when seen from a top view, an obtuse-angle-shaped step is installed at the chute outlet of the discharging chute, two edges of the step are respectively contacted with the left end and the right end of the outlet of the chute, and the obtuse angle faces to one side of the outlet far away from the chute.
6. A uniform distribution device applied to the method for uniformly distributing materials in the circular cooler of claim 1, which is characterized in that: the device is a step, an I-beam below a discharging chute extends outwards to serve as a foundation of a new step, a base plate is welded and installed on the extended I-beam, and the base plate is horizontally installed on the I-beam; one long edge of the bottom plate is installed close to the edge of the outlet of the discharging chute, a vertical plate is welded and installed on the other long edge of the bottom plate, and the wear-resistant end iron is installed and fixed on the vertical plate through bolts and nuts.
7. The uniform distribution device applied to the method for uniformly distributing the materials in the circular cooler according to claim 6, is characterized in that: the bottom plate is triangular.
8. The uniform distribution device applied to the method for uniformly distributing the materials in the circular cooler according to claim 6, is characterized in that: the short edge of the bottom plate is 60-150mm away from the outer ring baffle plate of the circular cooler.
9. The uniform distribution device applied to the method for uniformly distributing the materials in the circular cooler according to claim 6, is characterized in that: in order to reinforce the vertical plate, a rib plate is welded between the vertical plate and the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910310075.2A CN110645801A (en) | 2019-04-17 | 2019-04-17 | Method and device for uniformly distributing materials of circular cooler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910310075.2A CN110645801A (en) | 2019-04-17 | 2019-04-17 | Method and device for uniformly distributing materials of circular cooler |
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| Publication Number | Publication Date |
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| CN110645801A true CN110645801A (en) | 2020-01-03 |
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| CN201910310075.2A Pending CN110645801A (en) | 2019-04-17 | 2019-04-17 | Method and device for uniformly distributing materials of circular cooler |
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| KR100797881B1 (en) * | 2006-12-26 | 2008-01-24 | 주식회사 포스코 | Sintering ore materials continuation transfer equipment |
| CN102538473A (en) * | 2012-03-12 | 2012-07-04 | 新兴能源装备股份有限公司 | Air-cooled transfer chute of oxidized pellet chain-grate machine |
| CN203687605U (en) * | 2013-10-26 | 2014-07-02 | 广东韶钢松山股份有限公司 | Sintering machine tail material guiding chute |
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| CN204612455U (en) * | 2015-03-27 | 2015-09-02 | 中信重工机械股份有限公司 | A kind of applied to pelletizing rotary kiln blanking device |
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Application publication date: 20200103 |