CN103266194A - Shaft furnace-electric arc furnace direct reduced iron continuous hot-feeding device and feeding control method - Google Patents
Shaft furnace-electric arc furnace direct reduced iron continuous hot-feeding device and feeding control method Download PDFInfo
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- CN103266194A CN103266194A CN2013101473493A CN201310147349A CN103266194A CN 103266194 A CN103266194 A CN 103266194A CN 2013101473493 A CN2013101473493 A CN 2013101473493A CN 201310147349 A CN201310147349 A CN 201310147349A CN 103266194 A CN103266194 A CN 103266194A
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Abstract
The invention discloses a shaft furnace-electric arc furnace direct reduced iron continuous hot-feeding device. The shaft furnace-electric arc furnace direct reduced iron continuous hot-feeding device comprises a shaft furnace discharge device, an electric arc furnace, a buffer weighing warehouse arranged at an outlet of the shaft furnace discharge device, and a small-dip angle conveying device which is arranged between an outlet of the buffer weighing warehouse and an inlet of the electric arc furnace and is used for conveying a material. The small-dip angle conveying device comprises a feeder, a small-dip angle conveying pipe, a movable elephant trunk and a fixed elephant trunk. The feeder and the small-dip angle conveying pipe are provided respectively with vibrating devices. The shaft furnace-electric arc furnace direct reduced iron continuous hot-feeding device overcomes defects of the existing device, reduces shaft furnace height, device production and maintenance costs, and a one-time investment, enlarges a shaft furnace-electric arc furnace distance range, and has a simple, compact, safe and reliable structure. The invention also discloses a control method of shaft furnace-electric arc furnace direct reduced iron continuous hot-feeding. The method utilizes a sensor and a PLC controller to realize real-time monitoring and parameter adjustment, can be operated flexibly, has high safety and is suitable for continuous production.
Description
Technical field
The invention belongs to metallurgical technology field, the Continuous Heat that relates to a kind of shaft furnace-electric arc furnace reduced iron is sent feeding device and reinforced control method.
Background technology
Shaft furnace is produced reduced iron (DRI) heat and is sent the electric arc furnace smelting technology can effectively realize energy-saving and emission-reduction, and at present, reduction shaft furnace iron mainly adopts feed bin elephant trunk system, conduit pipe pneumatically to carry or canned haulage system to the hot feed technique of electric arc furnace; Wherein feed bin elephant trunk system is suitable for shaft furnace, electric arc furnace neighbour's scheme: the about 30～40m of both width between centers, and this device structure is simple, and the serialization level that running cost is low, energy-conservation obviously, electric arc furnace is produced is higher; Conduit pipe pneumatically is carried the conveying be suitable for longer distance, but running cost is higher, invests huge, and uneconomical; Though the handiness of canned haulage system is big, energy-saving effect is poor, the automatization level of production is lower, needs a large amount of artificial complete operations.
Application number is to disclose " a kind of electric furnace sponge iron hot charging device and method thereof " in 200910085263.6 the Chinese patent application in the prior art, this technology is directly slipped into electric arc furnace with the thermal sponge iron of producing in the shaft furnace by the reinforced mode of elephant trunk and is made steel under the deadweight effect, though this technology has realized thermal sponge iron and has carried under air-proof condition, but also exist corresponding problem, owing to be by the deadweight effect sponge iron to be slipped into electric arc furnace, therefore, elephant trunk need have than high spud angle, and the size at inclination angle is directly restricting problems such as the height of shaft furnace and equipment energy consumption.
Teachings herein is to be the patent application of 201210477984.3 " a kind of shaft furnace discharge devices " at application number directly, cooperates shaft furnace DRI production equipment and the shaft furnace-continuous hot charging DRI of electric arc furnace next-door neighbour's layout technology of developing.
Summary of the invention
In view of this, the object of the present invention is to provide the Continuous Heat of a kind of shaft furnace-electric arc furnace reduced iron to send feeding device and reinforced control method, improvement existing installation deficiency, reduce height and the device fabrication maintenance cost of shaft furnace, reduce one-time investment, enlarge shaft furnace-electric arc furnace spacing range, realize serialization, automatization and controlledization of shaft furnace-electric-arc furnace steelmaking Production Flow Chart, further optimize total system production cost and construction investment.
For achieving the above object, the Continuous Heat that the invention provides a kind of shaft furnace-electric arc furnace reduced iron is sent feeding device: comprise shaft furnace discharge device, electric arc furnace, be arranged on the buffering weighing storehouse in shaft furnace discharge device exit and be connected between buffering exit, weighing storehouse and the electric arc furnace ingress small inclination e Foerderanlage for delivery of material; Described small inclination e Foerderanlage comprise the feeding machine that is arranged on buffering exit, weighing storehouse, small inclination transfer lime that the ingress links to each other with described feeding machine exit, movable elephant trunk that the ingress is connected with described small inclination transfer lime exit and be connected movable elephant trunk exit and the electric arc furnace ingress between fixedly elephant trunk; Be respectively equipped with for the vibrating device that it is applied the reciprocal exciting force of level on described feeding machine and the small inclination transfer lime.
Further, described vibrating device is separately positioned on the inlet end place of inlet end and the small inclination transfer lime of feeding machine.
Further, described buffering weighing storehouse exit end also is provided with the accident elephant trunk, and described accident elephant trunk is provided with the control valve that opens and closes for the mouth of pipe.
Further, described movable elephant trunk is provided with nitrogen seal device.
Further, described fixedly elephant trunk is provided with the flue gas trip valve.
Further, also comprise for the PLC controller of regulating excitation parameter and for detection of quality of material and with detected quality signal and be transferred to weight sensor in the PLC controller.
Further, described weight sensor is at least three, is separately positioned on the decompression storehouse and buffering weighing storehouse of two shaft furnace discharge devices.
Further, the installation direction of described small inclination transfer lime and the angle between the horizontal direction are-3～12 degree.
The present invention also provides the Continuous Heat of a kind of shaft furnace-electric arc furnace reduced iron to send reinforced control method, two shaft furnace discharge devices are uninterruptedly alternately got the raw materials ready to buffering weighing storehouse, enter material behind the buffering weighing storehouse successively through feeding machine, small inclination transfer lime, movable elephant trunk and fixing elephant trunk, omnidistance airtight heat is delivered in the electric arc furnace, and wherein material heat send the transfer rate control method of material in the process mainly to may further comprise the steps:
(1) being arranged on the decompression storehouse of shaft furnace discharge device and the weight sensor on the buffering weighing storehouse detects weight of material and is transferred on the PLC controller;
(2) the PLC controller is arranged on the exciting force of the vibrating device on the feeding machine according to the weight signal adjustment that receives:
(a) when the difference of the weight of the material in the weight of material in the buffering weighing storehouse and the decompression storehouse of being got the raw materials ready in buffering weighing storehouse during greater than the preset value I, increase the exciting force of the vibrating device on the feeding machine;
(b) when the difference of the weight of the material in the weight of material in the buffering weighing storehouse and the decompression storehouse of being got the raw materials ready in buffering weighing storehouse during less than the preset value II, reduce the exciting force of the vibrating device on the feeding machine;
(c) when the weight of material in the buffering weighing storehouse when being between preset value I and the preset value II to the difference of the weight that cushions the material in the decompression storehouse of getting the raw materials ready in the weighing storehouse, the exciting force of the vibrating device on the feeding machine remains unchanged.
Beneficial effect of the present invention is: realized the direct connection of shaft furnace-electric arc furnace, the hot reduced iron of shaft furnace (DRI temperature 600～700 degree) fully-closed heat can have been delivered to electric arc furnace and make steel operation, saved energy consumption, improved recovery rate of iron; Because the small inclination transfer lime that adopts, be fit to carry the material of different shape, not only reduced the shaft furnace height, more enlarged the distance range between shaft furnace and the electric arc furnace, improved equipment and technology level of automation, reduced device fabrication maintenance cost and one-time investment, simple for structure, compact, safe and reliable; In the reinforced control method of the present invention, utilize sensor and PLC controller to monitor in real time and parameter adjustment, flexible operation, safe, be fit to serialization production.
Description of drawings
In order to make purpose of the present invention, technical scheme and beneficial effect clearer, the invention provides following accompanying drawing and describe:
Fig. 1 is structural representation of the present invention;
Wherein: 1-shaft furnace discharge device, 2-electric arc furnace, 3-buffering weighing storehouse, 4-feeding machine, 5-small inclination transfer lime, 6-movable elephant trunk, 7-fixedly elephant trunk, 8-vibrating device, 9-accident elephant trunk, 10-control valve, 11-nitrogen seal device, 12-flue gas trip valve, 13-PLC controller, 14-weight sensor.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
The Continuous Heat of shaft furnace as shown in Figure 1-electric arc furnace reduced iron is sent feeding device: comprise shaft furnace discharge device 1, electric arc furnace 2, be arranged on the buffering weighing storehouse 3 in shaft furnace discharge device 1 exit and be connected between buffering 3 exits, weighing storehouse and electric arc furnace 2 ingress small inclination e Foerderanlage for delivery of material; Described small inclination e Foerderanlage comprise the feeding machine 4 that is arranged on buffering 3 exits, weighing storehouse, small inclination transfer lime 5 that the ingress links to each other with described feeding machine 4 exits, movable elephant trunk 6 that the ingress is connected with described small inclination transfer lime 5 exits and be connected movable elephant trunk 6 exits and electric arc furnace 2 ingress between fixedly elephant trunk 7; Be respectively equipped with for the vibrating device 8 that it is applied the reciprocal exciting force of level on described feeding machine 4 and the small inclination transfer lime 5.
Be provided with buffering weighing storehouse 3 in the present embodiment, make material enter into small inclination transfer lime 5 uniform and stable more from shaft furnace discharge device 1, adopt small inclination transfer lime 5, eliminated when utilizing the deadweight convey materials restriction to the e Foerderanlage height, enlarged the spacing range between electric arc furnace 2 and the shaft furnace discharge device 1, it is wider to make it range of application, and the exciting force that produces by vibrating device 8 provides transmitting power for feeding machine 4 and small inclination transfer lime 5, be convenient to regulate, safe.
As shown in Figure 1, two vibrating devices 8 in the present embodiment are separately positioned on the inlet end place of inlet end and the small inclination transfer lime 5 of feeding machine 4, are convenient to material and carry downwards.
Buffering weighing storehouse 3 exit end also are provided with accident elephant trunk 9 in the present embodiment, and described accident elephant trunk 9 is provided with the control valve 10 that opens and closes for the mouth of pipe; Control valve 10 is normally off, and a certain equipment that is arranged on feeding machine 4 lower ends breaks down, when shaft furnace discharge device 1 is still got the raw materials ready in the buffering weighing storehouse 3, can open control valve 10, and the materials that enter in the buffering weighing storehouse 3 are discharged, and prevents from piling up.
Fixedly elephant trunk 7 in the present embodiment is provided with flue gas trip valve 12, when stopping reinforced or stopping to produce, prevent in the electric arc furnace 2 high-temperature gas along by fixing elephant trunk 7 to vertical spread.
Present embodiment also comprises for the PLC controller 13 of regulating excitation parameter and for detection of quality of material and detected quality signal is transferred to the weight sensor 14 of 13 li of PLC controllers, detect in real time and regulate, guaranteeing that discharge reaches the purpose of save energy smoothly simultaneously.
Weight sensor described in the present embodiment 14 is three, be separately positioned on the decompression storehouse and buffering weighing storehouse 3 of two shaft furnace discharge devices 1, buffering weighing storehouse 3 in present embodiment shaft furnace discharge device 1 in discharge still uninterruptedly feeds in raw material to buffering weighing storehouse 3, by the discharge velocity that three weight sensors 14 can accurately calculate buffering weighing storehouse 3 discharge in the feeding machine 4 is set.
The installation direction of small inclination transfer lime 5 and the angle between the horizontal direction are-3～12 degree in the present embodiment, small inclination transfer lime 5 angled conveyors are anharmonic vibration when-3～5 spend, mass transport speed has the characteristics of rewind down slow-motion, when wherein small inclination transfer lime 5 angled conveyors are negative value, the exit end of small inclination transfer lime 5 is higher than inlet end, the convey materials that can make progress slightly, but energy consumption is higher; Small inclination transfer lime 5 angled conveyors are simple harmonic oscillation when 6～12 spend, and energy consumption is lower; Small inclination transfer lime angled conveyor shown in Fig. 1 is at 8 degree.
Utilize the Continuous Heat of above-mentioned shaft furnace-electric arc furnace reduced iron to send the control method of feeding device, two shaft furnace discharge device 1 uninterrupted replacing are got the raw materials ready to buffering weighing storehouse 3, avoid cushioning weighing storehouse 3 idle waits, the material that enters behind the buffering weighing storehouse 3 passes through feeding machine 4 successively, small inclination transfer lime 5, movable elephant trunk 6 reaches fixedly elephant trunk 7, omnidistance airtight heat is delivered in the electric arc furnace 2, present embodiment with hot reduced iron in the shaft furnace (600～700 degree) directly fully-closed heat deliver to electric arc furnace 2 and make steel operation, save more than the electric arc furnace power consumption 120kwh/t with the cold charge ratio, and reduced the oxidation of reduced iron at conveying process, improved recovery rate of iron.
Material heat send the transfer rate control method of material in the process mainly to may further comprise the steps:
(1) be arranged on the decompression storehouse of shaft furnace discharge device 1 and the weight sensor 14 on the buffering weighing storehouse 3 and detect weight of material and be transferred on the PLC controller 13, by weight sensor 14 in real time in monitoring decompression storehouses and the buffering weighing storehouse 3 quality of material change;
(2) PLC controller 13 is arranged on the exciting force of the vibrating device 8 on the feeding machine 4 according to the weight signal adjustment that receives:
(a) when the difference of the weight of the material in the weight of material in the buffering weighing storehouse 3 and the decompression storehouse of being got the raw materials ready in buffering weighing storehouse 3 during greater than the preset value I, the exciting force of the vibrating device 8 on the increase feeding machine 4;
(b) when the weight of material in the buffering weighing storehouse 3 with the difference of the weight that cushions the material in the decompression storehouse of getting the raw materials ready in weighing storehouse 3 during less than the preset value II, is reduced the exciting force of the vibrating device 8 on the feeding machine 4;
(c) when the weight of material in the buffering weighing storehouse 3 and when being between preset value I and the preset value II to the difference of the weight that cushions the material in the decompression storehouse of getting the raw materials ready in weighing storehouse 3, the exciting force of the vibrating device 8 on the feeding machine 4 remains unchanged, adjust with 13 pairs of vibrating devices 8 of PLC controller, enforcement is convenient, speed is fast, the precision height.
Explanation is at last, above preferred embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is described in detail by above preferred embodiment, but those skilled in the art are to be understood that, can make various changes to it in the form and details, and not depart from claims of the present invention institute restricted portion.
Claims (9)
1. the Continuous Heat of shaft furnace-electric arc furnace reduced iron is sent feeding device, it is characterized in that: comprise shaft furnace discharge device, electric arc furnace, be arranged on the buffering weighing storehouse in shaft furnace discharge device exit and be connected between buffering exit, weighing storehouse and the electric arc furnace ingress small inclination e Foerderanlage for delivery of material; Described small inclination e Foerderanlage comprise the feeding machine that is arranged on buffering exit, weighing storehouse, small inclination transfer lime that the ingress links to each other with described feeding machine exit, movable elephant trunk that the ingress is connected with described small inclination transfer lime exit and be connected movable elephant trunk exit and the electric arc furnace ingress between fixedly elephant trunk; Be respectively equipped with for the vibrating device that it is applied the reciprocal exciting force of level on described feeding machine and the small inclination transfer lime.
2. the Continuous Heat of shaft furnace according to claim 1-electric arc furnace reduced iron is sent feeding device, it is characterized in that: described vibrating device is separately positioned on the inlet end place of inlet end and the small inclination transfer lime of feeding machine.
3. the Continuous Heat of shaft furnace according to claim 1-electric arc furnace reduced iron is sent feeding device, it is characterized in that: described buffering weighing storehouse exit end also is provided with the accident elephant trunk, and described accident elephant trunk is provided with the control valve that opens and closes for the mouth of pipe.
4. the Continuous Heat of shaft furnace according to claim 1-electric arc furnace reduced iron is sent feeding device, it is characterized in that: described movable elephant trunk is provided with nitrogen seal device.
5. the Continuous Heat of shaft furnace according to claim 1-electric arc furnace reduced iron is sent feeding device, it is characterized in that: described fixedly elephant trunk is provided with the flue gas trip valve.
6. the Continuous Heat of shaft furnace according to claim 1-electric arc furnace reduced iron is sent feeding device, it is characterized in that: also comprise for the PLC controller of regulating excitation parameter and for detection of quality of material and with detected quality signal being transferred to weight sensor in the PLC controller.
7. the Continuous Heat of shaft furnace according to claim 6-electric arc furnace reduced iron is sent feeding device, it is characterized in that: described weight sensor is at least three, is separately positioned on the decompression storehouse and buffering weighing storehouse of two shaft furnace discharge devices.
8. send feeding device according to the Continuous Heat of any described shaft furnace-electric arc furnace reduced iron of claim 1～7, it is characterized in that: the installation direction of described small inclination transfer lime and the angle between the horizontal direction are-3～12 degree.
An employing as claim 1～8 as described in each Continuous Heat of shaft furnace-electric arc furnace reduced iron send the Continuous Heat of the shaft furnace-electric arc furnace reduced iron of feeding device to send reinforced control method, it is characterized in that: two shaft furnace discharge devices are uninterruptedly alternately got the raw materials ready to buffering weighing storehouse, enter material behind the buffering weighing storehouse successively through feeding machine, small inclination transfer lime, movable elephant trunk and fixing elephant trunk, omnidistance airtight heat is delivered in the electric arc furnace, and wherein material heat send the transfer rate control method of material in the process mainly to may further comprise the steps:
(1) being arranged on the decompression storehouse of shaft furnace discharge device and the weight sensor on the buffering weighing storehouse detects weight of material and is transferred on the PLC controller;
(2) the PLC controller is arranged on the exciting force of the vibrating device on the feeding machine according to the weight signal adjustment that receives:
(a) when the difference of the weight of the material in the weight of material in the buffering weighing storehouse and the decompression storehouse of being got the raw materials ready in buffering weighing storehouse during greater than the preset value I, increase the exciting force of the vibrating device on the feeding machine;
(b) when the difference of the weight of the material in the weight of material in the buffering weighing storehouse and the decompression storehouse of being got the raw materials ready in buffering weighing storehouse during less than the preset value II, reduce the exciting force of the vibrating device on the feeding machine;
(c) when the weight of material in the buffering weighing storehouse when being between preset value I and the preset value II to the difference of the weight that cushions the material in the decompression storehouse of getting the raw materials ready in the weighing storehouse, the exciting force of the vibrating device on the feeding machine remains unchanged.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451344A (en) * | 2013-09-02 | 2013-12-18 | 北京科技大学 | CEO compound smelting reduction ironmaking plant and technology |
| CN104534881A (en) * | 2014-01-13 | 2015-04-22 | 中冶南方工程技术有限公司 | Automatic iron alloy roasting and feeding structure and method thereof |
| CN105886698A (en) * | 2015-01-24 | 2016-08-24 | 魏鹏 | Energy-saving, environment-friendly and optimal-design efficient novel technology for short-process steelmaking |
| CN114854932A (en) * | 2022-05-31 | 2022-08-05 | 中冶京诚工程技术有限公司 | Scraper type hot direct reduced iron conveying device and method |
| CN114921603A (en) * | 2022-05-31 | 2022-08-19 | 中冶京诚工程技术有限公司 | Spiral type hot state direct reduced iron conveying device and method |
| CN114921605A (en) * | 2022-05-31 | 2022-08-19 | 中冶京诚工程技术有限公司 | Horizontal vibration type hot direct reduced iron conveying device and method |
| CN115485397A (en) * | 2020-04-30 | 2022-12-16 | Sms集团有限公司 | Method for producing liquid pig iron from DRI products |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565769A (en) * | 2009-06-03 | 2009-10-28 | 北京首钢国际工程技术有限公司 | Electric furnace sponge iron hot charging device and method thereof |
| CN101775488A (en) * | 2010-01-28 | 2010-07-14 | 北京科技大学 | Method for conveying thermal-state rotary furnace metallized pellets in anharmonic vibration mode |
| CN101893380A (en) * | 2010-04-08 | 2010-11-24 | 中冶赛迪工程技术股份有限公司 | Waste steel preheating conveyor device |
| CN201662331U (en) * | 2010-02-01 | 2010-12-01 | 中冶赛迪工程技术股份有限公司 | Electric furnace charging and preheating device |
| CN203307366U (en) * | 2013-04-25 | 2013-11-27 | 中冶赛迪工程技术股份有限公司 | Continuous hot conveying and charging device for shaft furnace and electric arc furnace reduced iron |
-
2013
- 2013-04-25 CN CN2013101473493A patent/CN103266194A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565769A (en) * | 2009-06-03 | 2009-10-28 | 北京首钢国际工程技术有限公司 | Electric furnace sponge iron hot charging device and method thereof |
| CN101775488A (en) * | 2010-01-28 | 2010-07-14 | 北京科技大学 | Method for conveying thermal-state rotary furnace metallized pellets in anharmonic vibration mode |
| CN201662331U (en) * | 2010-02-01 | 2010-12-01 | 中冶赛迪工程技术股份有限公司 | Electric furnace charging and preheating device |
| CN101893380A (en) * | 2010-04-08 | 2010-11-24 | 中冶赛迪工程技术股份有限公司 | Waste steel preheating conveyor device |
| CN203307366U (en) * | 2013-04-25 | 2013-11-27 | 中冶赛迪工程技术股份有限公司 | Continuous hot conveying and charging device for shaft furnace and electric arc furnace reduced iron |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451344A (en) * | 2013-09-02 | 2013-12-18 | 北京科技大学 | CEO compound smelting reduction ironmaking plant and technology |
| CN104534881A (en) * | 2014-01-13 | 2015-04-22 | 中冶南方工程技术有限公司 | Automatic iron alloy roasting and feeding structure and method thereof |
| CN104534881B (en) * | 2014-01-13 | 2017-01-25 | 中冶南方工程技术有限公司 | Automatic iron alloy roasting and feeding structure and method thereof |
| CN105886698A (en) * | 2015-01-24 | 2016-08-24 | 魏鹏 | Energy-saving, environment-friendly and optimal-design efficient novel technology for short-process steelmaking |
| CN115485397A (en) * | 2020-04-30 | 2022-12-16 | Sms集团有限公司 | Method for producing liquid pig iron from DRI products |
| CN114854932A (en) * | 2022-05-31 | 2022-08-05 | 中冶京诚工程技术有限公司 | Scraper type hot direct reduced iron conveying device and method |
| CN114921603A (en) * | 2022-05-31 | 2022-08-19 | 中冶京诚工程技术有限公司 | Spiral type hot state direct reduced iron conveying device and method |
| CN114921605A (en) * | 2022-05-31 | 2022-08-19 | 中冶京诚工程技术有限公司 | Horizontal vibration type hot direct reduced iron conveying device and method |
| CN114854932B (en) * | 2022-05-31 | 2023-08-15 | 中冶京诚工程技术有限公司 | Scraper type hot direct reduced iron conveying device and method |
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Application publication date: 20130828 |