CN201321481Y - Novel pellet cooling device - Google Patents
Novel pellet cooling device Download PDFInfo
- Publication number
- CN201321481Y CN201321481Y CNU2008202324240U CN200820232424U CN201321481Y CN 201321481 Y CN201321481 Y CN 201321481Y CN U2008202324240 U CNU2008202324240 U CN U2008202324240U CN 200820232424 U CN200820232424 U CN 200820232424U CN 201321481 Y CN201321481 Y CN 201321481Y
- Authority
- CN
- China
- Prior art keywords
- feeder
- discharger
- refrigerating unit
- pellet
- cooling
- 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.)
- Expired - Fee Related
Links
Images
Abstract
Disclosed is a novel metallization pellet cooling device by adopting a nitrogen-supplementing circulation cooling mode. The cooling device comprises a machine body of a cooling machine, a feeder, an air inlet pipe, a chain grate machine and a material discharging device. The cooling device is characterized in that the surface of the machine body is designed into metal frame structure, and high temperature section and low temperature section refractory bricks are lined in the machine body; the high temperature end of the machine body is connected with the feeder, and the low temperature end thereof is connected with the material discharging device; the feeder and the material discharging device are inclined downwards oppositely to a horizontal plane; the chain grate machine is located in the machine body between the feeder and the material discharging device; air outlet holes are arranged at the top of the machine body, and the discharged waste air returns to the cooling machine and is recycled after being recovered by the waste heat of a boiler; the other side is provided with manholes to facilitate operators to overhaul; a plurality of rows of air inlet pipes are arranged at one side of the machine body along the advancing direction of materials; and the air inlet pipes are connected with a recycle air delivery main pipe after being supplemented with nitrogen. The utility model can recycle heat, prevent a metallization pellet from being oxidized, and has the characteristics of mineral ejection continuity and convenient maintenance. Therefore, the cooling device is applicable to cooling the metallization pellet in steel industry.
Description
Affiliated technical field
The utility model belongs to the refrigerating unit of metallurgy industry, is mainly used in the cooling of steel industry metallized pellet.
Background technology
It is the nearest three ironmaking novel procesies that grow up during the decade that the direct reducing process of rotary hearth furnace is produced metallized pellet (direct-reduced iron).Because this technology need not the preparation of fuel and the deep processing of raw material, active effect is arranged, thereby be subjected to the common concern of metallurgy industry rationally utilizing natural resources, protection human environment.Cooling is an important procedure of this technology, 1000 ℃ pelletizing is reduced to below 300 ℃, reclaims its waste heat, prevents the reoxidation of pelletizing, guarantee the degree of metalization of product, have great significance for the reduction energy-saving and cost-reducing and later process blast furnace or converter or electric furnace energy consumption of rotary hearth furnace production.
For continuous production, the type of cooling of external metallized pellet mainly is the uncovered cooling of indirect water-cooling formula, and the waste heat loss is bigger, and the cooling water intakeoutfall temperature only differs about 15 ℃.The cooling infrastructure of the direct reducing process of the existing rotary hearth furnace of China is the indirect water-cooling formula vibration cooling machine by University of Science ﹠ Technology, Beijing's exploitation, it is simple in structure, but cooling performance is relatively poor, the import and export cooling range is little, heat can't be recycled, and metallized pellet is exposed among the air, causes the pelletizing top layer by secondary oxidation easily, influences the final degree of metalization of product.In order further to reduce the oxidation of pelletizing, Japan introduces indirect water-cooling formula cooling cylinder with lower concentration nitrogen, realize reducing the purpose that the pelletizing degree of metalization reduces by constantly replenishing nitrogen, but waste heat still can't be recycled, and pelletizing stirs a large amount of powder of appearance in the process of advancing in the cooling cylinder cooling, has influenced the quality and the output of product.
Summary of the invention
In view of the defective that has the metallized pellet cooling apparatus at present both at home and abroad now, according to the actual needs of rotary hearth furnace and the production of other direct-reduced iron, the utility model provides a kind of carries out heat recuperation, prevent the metallized pellet oxidation, have ore discharge continuity and metallized pellet refrigerating unit easy to maintenance.
Novel metal pellet refrigerating unit adopts and replenishes the nitrogen circulation type of cooling, and it is made up of cooler body (11), feeder (1), inlet manifold (12), air intake branch (13), drying grate (6) and discharger (9).It is characterized in that, body (11) outside surface is a metal framework structure, the refractory brick that the liner high temperature section is different with low-temperature zone, the body temperature end connects feeder (1), and low-temperature end connects discharger (9), and drying grate (6) is positioned at the body (11) between feeder (1) and the discharger (9), the body top is provided with production well (4), the waste gas that ejects after boiler afterheat reclaims, returns the cooler recycle again.
Preferably, be provided with a plurality of air inlet ports (16) in body one side along the material direct of travel, air inlet port (16) links to each other with air intake branch (13), and air intake branch (13) replenishes pipe (15) with nitrogen and links to each other with inlet manifold (12), opposite side is provided with manhole (14), easy access.
Described feeder (1) is made up of loading hopper (18) and circle roller distributor (10), loading hopper is the heat-resistance stainless steel structure, liner sprays with the heat resistant and wear resistant spray material, guide rib (17) is set on the inclined floor of loading hopper (18), and the inclined floor bottom is connected with circle roller distributor (10).
Described discharger (9) is by going out funnel (19) and movable flashboard (8) is formed, going out funnel is steel construction, spray with the heat-resistant antifriction spray material, go out guide rib (17) is set on the funnel inclined floor, go out to be provided with on the funnel movable flashboard (8), movable flashboard (8) one ends link to each other with cooler body (11), and the other end and material (2) surface joins; Manhole (14) is sentenced Plate Steel and is covered, and with nut steel plate and body is closely linked together at ordinary times.
Spacing between adjacent two air intake branches (13) of described cooler body one side is a 0.5-4.0 rice.
Air intake branch (13) quantity of described cooler body one side is 5～50.
Horizontal plane is downward-sloping relatively for described feeder (1), and the loading hopper of feeder (18) base is 15-45 ° with the angle of inclination of circle roller distributor (10) central axis vertical direction.
Horizontal plane is downward-sloping relatively for described discharger (9), and the movable flashboard (8) of described discharger is 0～60 ° with the angle of cooler body (11).
The relative horizontal plane with discharger of feeder is downward-sloping, is convenient to smooth charging and discharge, and moving material is piled up the stockpile that forms naturally can play self-enclosed effect to opening for feed and discharge port.
The utility model pelletizing refrigerating unit, feeder bottom are established round roller distributor, and the discharger bottom is right after the running chain mat machine, have guaranteed the continuous flow of material; Moving material is piled up naturally and negative-pressure operation has been realized the selfsealings of feed end and discharge end, and discharger is provided with movable flashboard simultaneously, with cooler body angle be 0～60 °, also play the effect of sealing; Employing nitrogen is cooling gas, has both played the refrigerative effect, has also effectively avoided the oxidation of metallized pellet, has guaranteed the quality of product; The waste gas that ejects reclaims through boiler afterheat, and waste heat is reused.The utility model is rational in infrastructure, be easy to produce, installation and maintenance, can satisfy the product cooling requirement of the direct reducing process of rotary hearth furnace and other direct-reduced iron production technique after the use fully, have great promote significance for the all-round popularization of rotary hearth furnace process and the development of domestic and international direct-reduced iron production technique.
Description of drawings
Fig. 1 is a schematic cross-section of the present utility model;
Fig. 2 is the utility model inlet pipe direction body floor map;
Fig. 3 is the utility model inlet pipe schematic top plan view;
Fig. 4 is the utility model feeder orthographic plan;
Fig. 5 is the utility model feeder side elevational view;
Fig. 6 is the utility model discharger orthographic plan;
Fig. 7 is the utility model discharger side elevational view;
Fig. 8 is the utility model manhole floor map;
1, feeder 2, material 3, metal shell 4, production well 5, fire brick layer 6, drying grate 7, drying grate support 8, movable flashboard 9, discharger 10, circle roller distributor 11, body 12, inlet manifold 13, air intake branch 14, manhole 15, nitrogen replenish pipe 16, air inlet port 17, guide rib 18, loading hopper 19, go out funnel
Embodiment
Embodiment 1:
The novel metal pellet refrigerating unit of producing 100000 tons of metallized pellets per year mainly is made up of cooler body 11, inlet manifold 12, air intake branch 13, feeder 1, drying grate 6, discharger 9 for replenishing the nitrogen circulation type of cooling.
Temperature be 900～1100 ℃ material 2 through feeder 1, evenly cloth and at the uniform velocity moves to discharger 9 directions on drying grate 6 under the continuous drive of circle roller distributor 10.In this process, the low temperature nitrogen of coming in from air inlet port 16 enters into material bed, with material 2 direct heat exchange takes place.Material 2 temperature after cooling off is reduced to 200～300 ℃, drops down onto on the chain mat machine through discharger 9, by the continuous rotation of chain mat machine, realizes the continous-stable discharging of equipment.Moving material is piled up naturally and negative-pressure operation has been realized the selfsealings of feed end and discharge end, and discharger is provided with movable flashboard simultaneously, with cooler body angle be 0～60 °, also play the effect of sealing.
Embodiment 2:
The novel metal pellet refrigerating unit of producing 200000 tons of metallized pellets per year is for replenishing the nitrogen circulation type of cooling, and mainly equipment and structure are with example 1.
The cooler body surface is a metal framework structure, the wide 1.5m of long 12m., high 1.8m.The feeder base is 30 ° with circle roller distributor central axis horizontal vertical orientation angle, the long 10m of drying grate, wide 1.5m.Movable flashboard and cooler body angle are 45 °.Distance is 1.0 meters between air intake branch.10 of air intake branch quantity
Embodiment 3:
The novel metal pellet refrigerating unit of producing 300000 tons of metallized pellets per year is for replenishing the nitrogen circulation type of cooling, and mainly equipment and structure are with example 1.
The cooler body surface is a metal framework structure, the wide 3m of long 14m., high 2m.The feeder base is 30 ° with circle roller distributor central axis horizontal vertical orientation angle, the long 12m of drying grate, wide 2m.Movable flashboard and cooler body angle are 45 °.Distance is 0.8 meter between air intake branch.15 of air intake branch quantity.
Claims (10)
1, a kind of metallized pellet refrigerating unit, adopt and replenish the nitrogen circulation type of cooling, it is made up of cooler body (11), feeder (1), inlet manifold (12), air intake branch (13), drying grate (6) and discharger (9), it is characterized in that: body (11) outside surface is a metal framework structure, the refractory brick that the liner high temperature section is different with low-temperature zone, the body temperature end connects feeder (1), low-temperature end connects discharger (9), in the body (11) of drying grate (6) between feeder and discharger, body (11) top is provided with production well (4).
2, metallized pellet refrigerating unit as claimed in claim 1, it is characterized in that: be provided with a plurality of air inlet ports (16) along the material direct of travel in body one side, air inlet port (16) links to each other with air intake branch (13), air intake branch (13) replenishes pipe (15) with nitrogen and links to each other with inlet manifold (12), and opposite side is provided with manhole (14).
3, metallized pellet refrigerating unit as claimed in claim 1, it is characterized in that: feeder (1) is made up of loading hopper (18) and circle roller distributor (10), loading hopper is the heat-resistance stainless steel structure, liner sprays with the heat resistant and wear resistant spray material, guide rib (17) is set on the inclined floor of loading hopper (18), and the inclined floor bottom is connected with circle roller distributor (10).
4, metallized pellet refrigerating unit as claimed in claim 1, it is characterized in that: discharger (9) is by going out funnel (19) and movable flashboard (8) is formed, going out funnel is steel construction, spray with the heat-resistant antifriction spray material, go out guide rib (17) is set on the funnel inclined floor, go out to be provided with on the funnel movable flashboard (8), movable flashboard (8) one ends link to each other with cooler body (11), and the other end and material (2) surface joins.
5, as each described metallized pellet refrigerating unit in the claim 1 to 4, it is characterized in that: the spacing between adjacent two air intake branches (13) is a 0.5-4.0 rice.
6, novel metal pellet refrigerating unit as claimed in claim 5, it is characterized in that: the quantity of inlet pipe is 5～50.
7, the novel metal pellet refrigerating unit of stating as claim 3, it is characterized in that: horizontal plane is downward-sloping relatively for described feeder (1), and the loading hopper of feeder (18) base is 15-45 ° with the angle of inclination of circle roller distributor (10) central axis vertical direction.
8, novel metal pellet refrigerating unit as claimed in claim 4 is characterized in that: horizontal plane is downward-sloping relatively for described discharger (9), and the movable flashboard (8) of discharger is 0～60 ° with cooler machine (11) body angle.
9, novel metal pellet refrigerating unit according to claim 6, it is characterized in that: horizontal plane is downward-sloping relatively for described feeder (1), and the loading hopper of feeder (18) base is 15-45 ° with the angle of inclination of circle roller distributor (10) central axis vertical direction.
10, novel metal pellet refrigerating unit according to claim 6 is characterized in that: horizontal plane is downward-sloping relatively for described discharger (9), and the movable flashboard (8) of discharger is 0～60 ° with cooler machine (11) body angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202324240U CN201321481Y (en) | 2008-12-22 | 2008-12-22 | Novel pellet cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202324240U CN201321481Y (en) | 2008-12-22 | 2008-12-22 | Novel pellet cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201321481Y true CN201321481Y (en) | 2009-10-07 |
Family
ID=41158867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202324240U Expired - Fee Related CN201321481Y (en) | 2008-12-22 | 2008-12-22 | Novel pellet cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201321481Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586532A (en) * | 2012-03-08 | 2012-07-18 | 江苏沙钢集团有限公司 | Direct reduction iron cooling device |
| CN102818027A (en) * | 2012-08-05 | 2012-12-12 | 许静 | Sealing riding wheel group |
| CN103088213A (en) * | 2011-11-04 | 2013-05-08 | 中冶长天国际工程有限责任公司 | Device and method for cooling direct reduction iron |
| CN104457084A (en) * | 2014-12-25 | 2015-03-25 | 山东钢铁股份有限公司 | Rapid cooling method for high-temperature materials |
| CN104913652A (en) * | 2015-05-20 | 2015-09-16 | 中南大学 | Shaft furnace pellet clinker waste heat recycling method and device |
| CN107208168A (en) * | 2015-02-03 | 2017-09-26 | 株式会社神户制钢所 | The manufacture method and device of reduced iron |
| CN111504059A (en) * | 2020-04-16 | 2020-08-07 | 江苏中意建筑材料有限公司 | Cooler for kiln-discharging clinker of rotary kiln |
| CN113295010A (en) * | 2021-01-05 | 2021-08-24 | 中冶长天国际工程有限责任公司 | Sintering precooling device |
-
2008
- 2008-12-22 CN CNU2008202324240U patent/CN201321481Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088213A (en) * | 2011-11-04 | 2013-05-08 | 中冶长天国际工程有限责任公司 | Device and method for cooling direct reduction iron |
| CN103088213B (en) * | 2011-11-04 | 2015-09-09 | 中冶长天国际工程有限责任公司 | A kind of device and method cooling direct-reduction iron block |
| CN102586532B (en) * | 2012-03-08 | 2014-06-25 | 江苏沙钢集团有限公司 | Direct reduction iron cooling device |
| CN102586532A (en) * | 2012-03-08 | 2012-07-18 | 江苏沙钢集团有限公司 | Direct reduction iron cooling device |
| CN102818027B (en) * | 2012-08-05 | 2015-01-14 | 许静 | Sealing riding wheel group |
| CN102818027A (en) * | 2012-08-05 | 2012-12-12 | 许静 | Sealing riding wheel group |
| CN104457084A (en) * | 2014-12-25 | 2015-03-25 | 山东钢铁股份有限公司 | Rapid cooling method for high-temperature materials |
| CN107208168A (en) * | 2015-02-03 | 2017-09-26 | 株式会社神户制钢所 | The manufacture method and device of reduced iron |
| CN107208168B (en) * | 2015-02-03 | 2019-05-21 | 株式会社神户制钢所 | The manufacturing method and device of reduced iron |
| CN104913652A (en) * | 2015-05-20 | 2015-09-16 | 中南大学 | Shaft furnace pellet clinker waste heat recycling method and device |
| CN104913652B (en) * | 2015-05-20 | 2016-11-30 | 中南大学 | A kind of method of Shaft Furnace Pelletizing Process grog waste heat recovery and device thereof |
| CN111504059A (en) * | 2020-04-16 | 2020-08-07 | 江苏中意建筑材料有限公司 | Cooler for kiln-discharging clinker of rotary kiln |
| CN111504059B (en) * | 2020-04-16 | 2021-12-10 | 江苏中意建筑材料有限公司 | Cooler for kiln-discharging clinker of rotary kiln |
| CN113295010A (en) * | 2021-01-05 | 2021-08-24 | 中冶长天国际工程有限责任公司 | Sintering precooling device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201321481Y (en) | Novel pellet cooling device | |
| CN103993115B (en) | Dry integrated with reduction flash ironmaking equipment and iron smelting method | |
| CN101892086B (en) | Coal water slurry gasification furnace for gasifying coal water slurry | |
| CN203454809U (en) | Cylindrical cooling device for thermal-state mineral blocky-shaped particles | |
| CN206607253U (en) | A kind of reduction shaft furnace | |
| CN107904347B (en) | Coal-based direct reduction shaft furnace and reduction method thereof | |
| CN101481752B (en) | Self-sealing nitrogen circulating cooling method and apparatus | |
| CN114350869B (en) | Oxygen blast furnace type structure with furnace body blowing reducing gas | |
| CN205740770U (en) | A kind of negative-pressure type lime shaft kiln | |
| CN102690915B (en) | Modular dry granulating and cooling device for blast furnace slag | |
| CN102021347B (en) | Slag pulverized coal direct reduction lead smelting process and pulverized coal reduction lead smelting horizontal smelting device | |
| CN203972842U (en) | The two-way baking lid of a kind of ladle tank | |
| CN110923381B (en) | Short-flow blast furnace iron-making process | |
| CN105776905B (en) | A kind of suction type lime shaft kiln | |
| CN205448721U (en) | Hot DRI cooling device of rotary hearth furnace | |
| CN2921740Y (en) | Internal and external heating vertical passway reduction furnace | |
| CN102923974B (en) | Swirl type cooling system of sleeve limekiln | |
| CN102127609B (en) | Short-process ferroalloy smelting device | |
| CN202658169U (en) | Modular blast-furnace slag dry-method pelletizing cooling device | |
| CN206683419U (en) | A kind of chamber type sintering ore deposit waste-heat recovery device | |
| CN2666909Y (en) | Energy-saving environment protection active lime burning-in shaft kiln | |
| CN203820824U (en) | Drying and reduction integrated flash ironmaking equipment | |
| CN206858445U (en) | A kind of vertical limestone calcination kiln of environment-friendly type | |
| CN104057075A (en) | Molten steel ladle tank double-way roasting cover | |
| CN207192801U (en) | A kind of furnace of calcium carbide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091007 Termination date: 20171222 |