CN102435075A - Cooling device for direct reduction iron - Google Patents
Cooling device for direct reduction iron Download PDFInfo
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- CN102435075A CN102435075A CN2011104497664A CN201110449766A CN102435075A CN 102435075 A CN102435075 A CN 102435075A CN 2011104497664 A CN2011104497664 A CN 2011104497664A CN 201110449766 A CN201110449766 A CN 201110449766A CN 102435075 A CN102435075 A CN 102435075A
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Abstract
The invention relates to a cooling device for direct reduction iron. The cooling device comprises a cooling cylinder, wherein a gear ring is fixed on the outer circumference of the cooling cylinder; a transmission device is used for driving the gear ring to rotate; one end of the cooling cylinder is connected with a feeding hopper, and the other end of the cooling cylinder is connected with a kiln tail box; the lower end of the kiln tail box is provided with a discharging pipe; a water sleeve is fixed on the inner wall of the cooling cylinder; the discharging end of the feeding hopper is arranged in the water sleeve; a cooling water channel is formed between the outer wall of the water sleeve and the inner wall of the cooling cylinder; one end of the cooling water channel is provided a water inlet and a water outlet; and the inner wall of the water sleeve is provided with spiral fins. In the invention, a cooling cylinder shell is forcedly cooled by adopting water sleeve type high-speed water current, and the walking path of the direct reduction iron in the cylinder is controlled by using the spiral fins, so that the walking time of the direct reduction iron in the cylinder is prolonged, the cooling efficiency is greatly increased, the diameter and the length of the cooling cylinder are reduced, the equipment weight is greatly reduced, and the transmission power and power consumption of the equipment are lowered; and meanwhile, no steam is dissipated, so that the environmental pollution is improved greatly.
Description
Technical field:
The invention belongs to the auxiliary equipment technical field that Ferrous Metallurgy is used, be specifically related to the cooling device that a kind of high temperature DRI is used.
Background technology:
Produce the DRI of high temperature in steel and iron industry and the colored metallurgical industrial, about 1200 ℃ of temperature, the degree of metalization 80-90% after being reduced, its temperature is high, can not transport easily and store; Simultaneously, the high temperature DRI runs into the sky G&W, can vigorous oxidation promptly burn, and is reoxidised into oxide to products such as being reduced into metallic iron, metallic nickel, can't use.So need a kind of indirect cooling device, it be cooled to below 100 ℃.
At present, what in the world the cooling of DRI is mainly adopted is fountain indirect water-cooling revolving drum, and it is with the hot reduced iron revolving drum of in air-tight state, packing into; Outside water spray; Because it is thin that tube is gone up moisture film, it is substantially anhydrous that heat material part is arranged at the bottom in the tube, so its cooling effectiveness is poor; For this reason, the technical staff is forced in that atomization water directly cools off in the afterbody tube, accomplishes cooling, but the resultant metal rate descends 2～3%.Because cooling effectiveness is poor, the specification that cooling cylinder 17 is made is not only big but also long, 3～4 meters of general diameters, and long 40～50 meters, purpose is to prolong cool time, but has increased investment and running cost.In addition, shower water vaporization, serious pollution environment, the particularly north cold local, its steam contamination is more serious.This technology fails to improve and optimizate at present, is run ragged and falls behind.
And to some small-sized iron and steel metallurgy enterprises in order to save cost, chilling in the water is directly dropped in the hot reduced iron back of coming out of the stove, the result reduces more than 5% degree of metalization, pollutes more seriously, dehydration more bothers.
Summary of the invention:
In sum, in order to overcome the deficiency of prior art problem, the invention provides a kind of cooling device of DRI; It is to adopt the water-jacket typ high-velocity flow that the cooling cylinder housing is strengthened cooling, adopts the traveling route of helical fin control DRI in tube simultaneously, prolongs DRI and in the cooling cylindrical shell, walks line time; Thereby cooling effectiveness is improved greatly; Must diameter that dwindle cooling cylinder and length have been alleviated weight of equipment greatly, reduce the power and the power consumption of equipment transmission; Simultaneously, with there not being vapor evolution behind the water jacket, improved environmental situation widely.
For solving the problems of the technologies described above, technical scheme of the present invention is achieved in that
A kind of cooling device of DRI, it comprises cooling cylinder, gear ring and transmission device, gear ring is fixed on the excircle of cooling cylinder; Gear ring is connected with transmission device, and an end of cooling cylinder is connected with feed hopper, and its other end is connected with the kiln boot; Kiln boot lower end is provided with discharge nozzle; Wherein: be fixed with water jacket on the described cooling cylinder inwall, the discharge end of feed hopper is arranged in the water jacket, forms cooling-water duct between water-jacket outer wall and the cooling cylinder inwall; One end of cooling-water duct is provided with water inlet and delivery port; The water jacket inwall is provided with helical fin, and the spirals direction of helical fin is identical with the direct of travel of DRI, and an end that is connected with feed hopper of cooling cylinder is provided with kiln head box.
Technical scheme of the present invention can also be achieved in that between described cooling cylinder excircle and kiln head box and the kiln boot sealing ring and tail sealing ring are set respectively.
Technical scheme of the present invention can also be achieved in that described feed hopper and kiln head box directly are provided with the end sealing ring.
Technical scheme of the present invention can also be achieved in that being disposed with the loading and unloading material valve on the described discharge nozzle from top to bottom reaches discharge valve down.
Technical scheme of the present invention can also be achieved in that described sealing ring, tail sealing ring and end sealing ring are stainless steel substrates and graphite flake composite sealing ring, stainless steel substrates and graphite flake arranged alternate.
Technical scheme of the present invention can also be achieved in that on described kiln head box inwall and the feed hopper inwall and be provided with the refractory lining layer.
Technical scheme of the present invention can also be achieved in that described helical fin is single head helical fin or multi-head spiral fin.
Technical scheme of the present invention can also be achieved in that described helical fin is high temperature resistant helical fin.
Beneficial effect of the present invention is:
1, water jacket of the present invention is fixed on the cooling cylinder inwall, forms cooling-water duct between water-jacket outer wall and the cooling cylinder inwall, and water jacket can be implemented in any time and the position along with cooling cylinder rotates together, and housing all has new water-cooled but; Simultaneously, cooling water circulates in cooling-water duct, strengthens the cooling to housing.
2, on the inwall of water jacket of the present invention helical fin is set, the spirals direction of helical fin is consistent with the direction of advance of DRI, the traveling route of helical fin control DRI in tube; Prolong DRI and in the cooling cylindrical shell, walk line time; Simultaneously, increase the contact area of DRI and water jacket inwall, thereby cooling effectiveness is improved greatly; Must diameter that dwindle cooling cylinder and length have been alleviated weight of equipment greatly.
3, between cooling cylinder outer wall of the present invention and kiln head box and the kiln boot sealing ring is set respectively; Sealing ring also is set between kiln head box and the feed hopper, simultaneously, two discharge valves is set on the discharge nozzle; When using, can not open simultaneously by two discharge valves; Can prevent effectively that hot reduced iron from contacting with air, secluding air gets into the water jacket inner chamber, guarantees reduced iron not oxidation by air in cooling procedure.
4, of the present invention sealing ring, tail sealing ring and end sealing ring are stainless steel substrates and graphite flake composite sealing ring; Stainless steel substrates and graphite flake arranged alternate; Thereby make that a sealing ring, tail sealing ring and end sealing ring are wear-resisting, heatproof, high resilience, guarantee that sealing is tight, good sealing effect.
5, the present invention is simple in structure, novel, powerful, easy to use, can effectively improve the cooling effectiveness of DRI, improves the cooling quality, has reduced the power and the power consumption of equipment transmission; Simultaneously, with there not being vapor evolution behind the water jacket, improved environmental situation widely.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 looks sketch map for a left side of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed description.
Like Fig. 1, shown in Figure 2, a kind of cooling device of DRI, it comprises cooling cylinder 17, gear ring 14 and transmission device 6; Gear ring 14 is fixed on the excircle of cooling cylinder 17; Gear ring 14 is connected with transmission device 6, and an end of cooling cylinder 17 is connected with feed hopper 1, and its other end is connected with kiln boot 11; An end that is connected with feed hopper 1 of cooling cylinder 17 is provided with kiln head box 4; Be provided with a sealing ring 5 between cooling cylinder 17 excircles and the kiln head box 4, be provided with tail sealing ring 12 between the excircle of cooling cylinder 17 and the kiln boot 11, be provided with end sealing ring 2 between feed hopper 1 and the kiln head box 4; Sealing ring 5, tail sealing ring 12 and end sealing ring 2 are stainless steel substrates and graphite flake composite sealing ring, stainless steel substrates and graphite flake arranged alternate.Kiln boot 11 lower ends are provided with discharge nozzle 9; Be disposed with loading and unloading material valve 7 on the discharge nozzle 9 from top to bottom and reach discharge valve 8 down, be fixed with water jacket 16 on cooling cylinder 17 inwalls, the discharge end of feed hopper 1 is arranged in the water jacket 16; Form cooling-water duct 15 between water jacket 16 outer walls and cooling cylinder 17 inwalls; One end of cooling-water duct 15 is provided with water inlet 10 and delivery port 18, and water jacket 16 inwalls are provided with helical fin 13, and the spirals direction of helical fin 13 is identical with the direct of travel of DRI; Helical fin 13 is the high temperature resistant helical fin of bull, is provided with refractory lining layer 3 on kiln head box 4 inwalls and feed hopper 1 inwall.
During use, transmission device 6 drives gear ring 14 and rotates, and gear ring 14 is fixed on cooling cylinder 17 excircles; Rotate thereby drive cooling cylinder 17, water jacket 16 is fixed on cooling cylinder 17 inwalls, and water jacket 16 is along with cooling cylinder 17 rotates together; The DRI of high temperature gets in the water jacket 16 from feed hopper 1, under the thrust of helical fin 13 is used most, to an end motion of kiln boot 11; Cooling water gets into the cooling-water duct 15 between water jacket 16 outer walls and cooling cylinder 17 inwalls from water inlet pipe, in cooling-water duct 15, flows, and flows out from delivery port 18; Cooling water is constantly to water jacket 16 coolings; The heat of the DRI of high temperature passes to cooling water through helical fin 13 and water jacket 16, thereby DRI is cooled, and the DRI after the cooling is discharged from the discharge nozzle 9 of kiln boot 11 lower ends.
The loading and unloading material valve 7 that is provided with on the discharge nozzle 9 reaches the mode that discharge valve 8 employings are down alternately opened, and loading and unloading material valve 7 is opened when promptly descending discharge valve 8 to close, and cooled DRI gets into the space between the upper and lower discharge valve 8; Descend discharge valve 8 to open then; Loading and unloading material valve 7 cuts out, and DRI is discharged, and descends discharge valve 8 to close loading and unloading material valve 7 afterwards and opens; So move in circles; Thereby assurance kiln boot 11 is closed sealing all the time, guarantees that air can not get into water jackets 16 inner chambers from discharge nozzle 9, the DRI oxidation by air in anti-water-baffling sleeve 16 inner chambers.
In the cooling-water duct 15 between water jacket 16 outer walls of the present invention and cooling cylinder 17 inwalls deflector can also be set, the guide cooling water flow direction can be strengthened the cooling of cooling water to DRI.
Of the present invention sealing ring 5, tail sealing ring 12 and end sealing ring 2 can prevent effectively that air from getting into water jacket 16 inner chambers, the DRI oxidation by air in anti-water-baffling sleeve 16 inner chambers.
Be noted that; The above embodiment is to the explanation of technical scheme of the present invention and unrestricted; Other modification that is equal to replacement or makes of affiliated technical field those of ordinary skill according to prior art; As long as do not exceed the thinking and the scope of technical scheme of the present invention, all should be included within the interest field of the presently claimed invention.
Claims (8)
1. the cooling device of a DRI; It comprises cooling cylinder (17), gear ring (14) and transmission device (6), and gear ring (14) is fixed on the excircle of cooling cylinder (17), and gear ring (14) is connected with transmission device (6); One end of cooling cylinder (17) is connected with feed hopper (1); Its other end is connected with kiln boot (11), and kiln boot (11) lower end is provided with discharge nozzle (9), it is characterized in that: be fixed with water jacket (16) on described cooling cylinder (17) inwall; The discharge end of feed hopper (1) is arranged in the water jacket (16); Form cooling-water duct (15) between water jacket (16) outer wall and cooling cylinder (17) inwall, an end of cooling-water duct (15) is provided with water inlet (10) and delivery port (18), and water jacket (16) inwall is provided with helical fin (13); The spirals direction of helical fin (13) is identical with the direct of travel of DRI, and an end that is connected with feed hopper (1) of cooling cylinder (17) is provided with kiln head box (4).
2. the cooling device of DRI according to claim 1 is characterized in that: a sealing ring (5) and tail sealing ring (12) are set respectively between described cooling cylinder (17) excircle and kiln head box (4) and the kiln boot (11).
3. the cooling device of DRI according to claim 1 is characterized in that: described feed hopper (1) directly is provided with end sealing ring (2) with kiln head box (4).
4. the cooling device of DRI according to claim 1 is characterized in that: be disposed with loading and unloading material valve (7) on the described discharge nozzle (9) from top to bottom and reach discharge valve (8) down.
5. according to the cooling device of claim 2 or 3 described DRIs; It is characterized in that: described sealing ring (5), tail sealing ring (12) and end sealing ring (2) are stainless steel substrates and graphite flake composite sealing ring, stainless steel substrates and graphite flake arranged alternate.
6. the cooling device of DRI according to claim 1 is characterized in that: be provided with refractory lining layer (3) on described kiln head box (4) inwall and feed hopper (1) inwall.
7. the cooling device of DRI according to claim 1, it is characterized in that: described helical fin (13) is single head helical fin or multi-head spiral fin.
8. according to the cooling device of claim 1 or 7 described DRIs, it is characterized in that: described helical fin (13) is high temperature resistant helical fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110449766.4A CN102435075B (en) | 2011-12-29 | 2011-12-29 | Cooling device for direct reduction iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110449766.4A CN102435075B (en) | 2011-12-29 | 2011-12-29 | Cooling device for direct reduction iron |
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| CN102435075A true CN102435075A (en) | 2012-05-02 |
| CN102435075B CN102435075B (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110449766.4A Expired - Fee Related CN102435075B (en) | 2011-12-29 | 2011-12-29 | Cooling device for direct reduction iron |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180672A (en) * | 2014-08-19 | 2014-12-03 | 苏州汇科机电设备有限公司 | Fast forced cooling furnace device for electronic powder material |
| CN105907911A (en) * | 2016-06-15 | 2016-08-31 | 江苏省冶金设计院有限公司 | Hot water quenching device and method for direct-reduced iron (DRI) of rotary hearth furnace |
| CN106987713A (en) * | 2017-05-11 | 2017-07-28 | 厦门环资矿业科技股份有限公司 | A kind of low energy consumption environment protection-type magnetizing roast mine tailing cooling treatment system |
| CN107557509A (en) * | 2016-06-30 | 2018-01-09 | 中冶长天国际工程有限责任公司 | A kind of vertical cooling device and its application method |
| CN107894181A (en) * | 2017-10-30 | 2018-04-10 | 佛山汇众森泰科技有限公司 | A kind of novel energy-conserving powder cooling device |
| CN108050849A (en) * | 2018-01-18 | 2018-05-18 | 江苏三井环保股份有限公司 | Cool down kiln |
| CN108315518A (en) * | 2018-03-30 | 2018-07-24 | 湖州虹君机械有限公司 | Copper cooling device |
| CN111895794A (en) * | 2020-08-06 | 2020-11-06 | 四川钜鼎节能环保科技有限公司 | Magnesium slag cooling machine |
| CN113679067A (en) * | 2021-08-20 | 2021-11-23 | 安徽湘大骆驼饲料有限公司 | Material screening and grading cooling system for feed production |
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| JPS55145111A (en) * | 1979-04-26 | 1980-11-12 | Sumitomo Metal Ind Ltd | Cooling method for reduced iron |
| CN2266698Y (en) * | 1996-07-18 | 1997-11-05 | 安庆林 | Cooling machine for slag |
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| CN2711538Y (en) * | 2004-04-21 | 2005-07-20 | 姜政华 | Spiral blade roller slag cooling machine |
| CN2733191Y (en) * | 2004-09-02 | 2005-10-12 | 湖北洪城通用机械股份有限公司 | Smoke desulfurizing venetian blind type single-layer double sealing baffle plate door |
| CN101796201A (en) * | 2007-09-19 | 2010-08-04 | 株式会社神户制钢所 | Process for producing hot briquette iron using high-temperature reduced iron, and method and apparatus for temperature control of reduced iron for hot forming for the process |
| CN202415586U (en) * | 2011-12-29 | 2012-09-05 | 李世杰 | Cooling device for direct reduction iron |
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2011
- 2011-12-29 CN CN201110449766.4A patent/CN102435075B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS55145111A (en) * | 1979-04-26 | 1980-11-12 | Sumitomo Metal Ind Ltd | Cooling method for reduced iron |
| CN2266698Y (en) * | 1996-07-18 | 1997-11-05 | 安庆林 | Cooling machine for slag |
| CN2389339Y (en) * | 1999-10-11 | 2000-07-26 | 冶金工业部长沙冶金设计研究院 | Rotary kiln scale sealing device |
| JP2001330379A (en) * | 2000-05-22 | 2001-11-30 | Daido Steel Co Ltd | Reduction pellet continuous cooler |
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| CN101796201A (en) * | 2007-09-19 | 2010-08-04 | 株式会社神户制钢所 | Process for producing hot briquette iron using high-temperature reduced iron, and method and apparatus for temperature control of reduced iron for hot forming for the process |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180672A (en) * | 2014-08-19 | 2014-12-03 | 苏州汇科机电设备有限公司 | Fast forced cooling furnace device for electronic powder material |
| CN105907911A (en) * | 2016-06-15 | 2016-08-31 | 江苏省冶金设计院有限公司 | Hot water quenching device and method for direct-reduced iron (DRI) of rotary hearth furnace |
| CN105907911B (en) * | 2016-06-15 | 2018-07-03 | 江苏省冶金设计院有限公司 | A kind of direct reduced iron by rotary hearth furnace hot water quenching device and method |
| CN107557509A (en) * | 2016-06-30 | 2018-01-09 | 中冶长天国际工程有限责任公司 | A kind of vertical cooling device and its application method |
| CN106987713A (en) * | 2017-05-11 | 2017-07-28 | 厦门环资矿业科技股份有限公司 | A kind of low energy consumption environment protection-type magnetizing roast mine tailing cooling treatment system |
| CN107894181A (en) * | 2017-10-30 | 2018-04-10 | 佛山汇众森泰科技有限公司 | A kind of novel energy-conserving powder cooling device |
| CN108050849A (en) * | 2018-01-18 | 2018-05-18 | 江苏三井环保股份有限公司 | Cool down kiln |
| CN108315518A (en) * | 2018-03-30 | 2018-07-24 | 湖州虹君机械有限公司 | Copper cooling device |
| CN111895794A (en) * | 2020-08-06 | 2020-11-06 | 四川钜鼎节能环保科技有限公司 | Magnesium slag cooling machine |
| CN113679067A (en) * | 2021-08-20 | 2021-11-23 | 安徽湘大骆驼饲料有限公司 | Material screening and grading cooling system for feed production |
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| CN102435075B (en) | 2014-07-23 |
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