CN102003881A - Loading and unloading method and system of iron making process with direct reduction furnace and melting furnace - Google Patents
Loading and unloading method and system of iron making process with direct reduction furnace and melting furnace Download PDFInfo
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- CN102003881A CN102003881A CN 201010561199 CN201010561199A CN102003881A CN 102003881 A CN102003881 A CN 102003881A CN 201010561199 CN201010561199 CN 201010561199 CN 201010561199 A CN201010561199 A CN 201010561199A CN 102003881 A CN102003881 A CN 102003881A
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Abstract
The invention discloses a loading and unloading method and system of an iron making process with a direct reduction furnace and a melting furnace. The loading and unloading method adopts a process simultaneously carrying out loading and unloading of the direct reduction furnace and the loading of the melting furnace. Thermal sponge iron quickly enters the melting furnace, the temperature drop is small, the production efficiency is high, and the smelting energy consumption of the melting furnace is reduced. Meanwhile, the loading and unloading method also has the advantages of short and simple processes and environment protection. The loading and unloading system has the advantages of simple and compact structure, small occupation area and little investment, thereby saving the cost. The loading and unloading system is favorable for realizing the loading and unloading process and ensuring normal production.
Description
Technical field
The present invention relates to a kind of to iron and steel enterprise's ironmaking system and technology, particularly a kind of iron-smelting process charging, discharging method and equipment.
Background technology
Ironmaking is the technical process that metallic iron is extract from iron-bearing mineral (being mainly the oxide of iron), is the tap of iron and steel enterprise.
In the prior art, ironmaking technology mainly contains blast-furnace technique, direct reduction technique and melting and reducing technology, and blast-furnace technique and melting and reducing technology are produced molten iron, and directly reduction technique is produced sponge iron.Blast furnace ironmaking is meant an iron ore and coke, and carbon monoxide, fuel such as hydrogen and flux are packed into and smelted in the blast furnace, removes impurity and obtains metallic iron (pig iron).
Along with the development of blast furnace technology, no matter blast furnace process ironmaking has reached comparatively perfect degree from theory and technology.But shortcomings such as the coke consumption is big, long flow path, investment is big, environmental pollution is serious that blast-furnace iron-making method exists, along with the rise in price of iron ore and coke, the cost of blast furnace ironmaking sharp rises; And owing to must have good ventilation, can't smelt fine ore, fine ore must could be smelted by cloth behind the sintering, therefore is not suitable for the bad iron ores of slug type such as smelting extra large placer; Direct-reduction process is meant the iron-making production that reduction of iron ore is become sponge iron under the iron ore fusion temperature, product is DRI or sponge iron, technology is comparatively ripe, this production method accounts for 80% so far, owing to be subjected to oil, natural gas resource and price limit, develop comparatively slowly, and use the coal generating gas long flow path, investment is high; The product of producing must pass through following process, has the relatively independent material process that takes on, and production efficiency is lower.
Therefore, need improve, have that flow process is short and simple, an advantage of environmental friendliness, production efficiency height and small investment existing smelting process.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of direct reduction furnace-molten stove iron-smelting process that divides takes on the material method and takes on the material system, directly reduction furnace-molten branch stove iron-smelting process takes on the material method and has short and simple, the eco-friendly advantage of flow process, reinforced when realizing direct reduction furnace during production and melting the branch stove, the production efficiency height; It is simply compact to take on the material system architecture, and floor space is little, small investment, thus save cost.
Direct reduction furnace of the present invention-molten stove iron-smelting process that divides takes on the material method, comprises direct reduction furnace charging, direct reduction furnace discharging and melt dividing the stove charging;
Directly reduction furnace charging: all press the back to add direct reduction furnace iron ore raw material by distribution device;
Directly reduction furnace discharging: with the high-temperature sponge iron decompression back input transportation batch can of direct reduction furnace output;
Molten divide the stove charging: will transport the direct handling of batch can and after the molten charging system that divides the stove furnace roof is all pressed, high-temperature sponge iron is filled in the molten branch stove by the molten stove top charging system that divides;
Production is carried out in the process, and the direct reduction furnace charging process after directly reduction furnace is feeded for the first time divides the stove charging to carry out simultaneously with direct reduction furnace discharging with molten.
Further, directly high-temperature sponge iron decompression back is by swivel chute input transportation batch can in the reduction furnace, and transportation batch can when filling with substance swivel chute rotates to the top charging of transportation batch can, after charging is finished, rotates transportation batch can top to position of readiness;
Described transportation batch can discharging opening is provided with the taper material valve, can be by the switching of batch can GRAVITY CONTROL cone valve;
Described transportation batch can charging aperture is provided with the feeding warehouse lid of automatic shutter, opens automatically during charging, closes in the lifting transportation;
All carry out dust removal by ventilation with extraneous contact position in the described high-temperature sponge iron transport process; Further, the high-temperature sponge iron temperature in the transport process is 500 ℃～700 ℃;
Further, directly reduction furnace charging and the molten stove when filling with substance that divides are all pressed employing inert gas method for equalizing voltage, all press the gas that is discharged to discharge after dedusting or reclaim.
The invention also discloses a kind of direct reduction furnace-molten material system that takes on that divides the stove iron-smelting process to take on the material method that realizes, comprise: direct reduction furnace charging system, direct reduction furnace discharge system, sponge iron movement system and the molten stove charging system that divides, the stove charging system comprised the sponge iron charging system and fired the auxiliary material charging system in described molten minute;
Directly the reduction furnace charging system comprises: the iron ore raw material feeding system is used for to direct reduction furnace transportation iron ore raw material;
The iron ore raw material equalizer tank is used to receive the iron ore raw material feeding system and comes iron ore raw material and iron ore raw material all is depressed into identical with direct reduction furnace pressure;
The iron ore raw material distributing device is used to receive the equal pressing system of iron ore raw material and comes iron ore raw material and iron ore raw material is distributed into direct reduction furnace;
Directly the reduction furnace discharge system comprises:
Directly reduction furnace discharging decompression jar is used to receive the sponge iron of direct reduction furnace output and sponge iron is decompressed to normal pressure;
The sponge iron discharging chute is used to receive direct reduction furnace discharging decompression jar supplied materials and is delivered to the sponge iron movement system;
The sponge iron movement system comprises:
Sponge iron transportation batch can is used to receive the sponge iron discharging chute and comes sponge iron and transportation;
Boom hoisting is used for that sponge iron is transported batch can and winches to the sponge iron charging system; The sponge iron charging system comprises: the sponge iron receiving tank is used to receive sponge iron transportation batch can and comes sponge iron;
The molten stove sponge iron equalizer tank that divides is used to receive the sponge iron receiving tank and comes sponge iron and sponge iron all is depressed into also molten minute furnace pressure power is identical;
The molten stove distributing device that divides is used to receive the sponge iron equalizer tank and comes sponge iron and sponge iron is distributed into the molten stove that divides;
Combustion auxiliary material charging system comprises:
Combustion auxiliary material feeding system is used for to the molten stove transportation combustion auxiliary material that divides;
Combustion auxiliary material equalizer tank is used for receiving combustion auxiliary material feeding system and fires auxiliary material and the combustion auxiliary material all is depressed into identical and deliver to molten branch stove distributing device with the molten furnace pressure power of dividing;
Stove distributing device charging aperture was communicated in a material-collecting funnel in described molten minute, and described combustion auxiliary material equalizer tank and sponge iron equalizer tank all are communicated in material-collecting funnel.
Further, described iron ore raw material equalizer tank is delivered to the iron ore raw material distributing device by the iron ore raw material pans with iron ore raw material; Described combustion auxiliary material equalizer tank will fire auxiliary material by combustion auxiliary material pans delivers to material-collecting funnel;
Further, described direct reduction furnace discharging decompression jar, sponge iron transportation batch can, sponge iron receiving tank and the molten stove sponge iron equalizer tank that divides are provided with heat insulation and wear resistance protection internal layer;
Further, sponge iron transportation batch can is arranged on and prevents the guider that departs from the lifting process, described guider comprises the roller that is arranged on the sponge iron transportation batch can and the guide rail that should fixedly install along the lifting direction with pair of rollers, described roller is two and is 120 ° of distributions with central angle that two guide rail rail levels are 60 ° of angles;
Further, the shared elevating belt of described iron ore raw material feeding system and combustion auxiliary material feeding system, elevating belt blanking place is provided with the raw material swivel chute, and described raw material swivel chute goes out material level and comprises that the combustion auxiliary material that is communicated with combustion auxiliary material horizontal conveyor belt goes out material level and goes out material level with the iron ore raw material that is communicated in the iron ore raw material equalizer tank;
Further, sponge iron transportation batch can charging place and discharging go out all to be provided with ventilating dust-arrester; Also comprise high-temperature sponge iron is carried and other flow process and the second direct reduction furnace discharging decompression jar that is arranged in parallel with direct reduction furnace discharging decompression jar; Described combustion auxiliary material feeding system comprises combustion auxiliary material horizontal conveyor belt and the receiver bin of carrying flow process to set gradually by the combustion auxiliary material, and receiver bin bottom discharge mouth is communicated in combustion auxiliary material equalizer tank.
The invention has the beneficial effects as follows: direct reduction furnace of the present invention-molten stove iron-smelting process that divides takes on material method and iron-smelting process thereof, taking on the material method adopts direct reduction furnace to take on material and the molten stove technology that charging is carried out simultaneously of dividing, hot sponge iron enters the molten stove that divides fast, temperature drop is less, the production efficiency height, reduce the molten stove that divides and smelt energy consumption, simultaneously short and simple, the eco-friendly advantage of flow process; It is simply compact to take on the material system architecture, and floor space is little, small investment, thus save cost, be easy to realize the material technology that takes on of the present invention, guarantee normally carrying out of production.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described:
Accompanying drawing 1 is a schematic flow sheet of the present invention;
Accompanying drawing 2 is the guider structural representation.
The specific embodiment
Accompanying drawing 1 is a schematic flow sheet of the present invention, and accompanying drawing 2 is the guider structural representation, and as shown in the figure: the direct reduction furnace of present embodiment-molten stove iron-smelting process that divides takes on the material method, comprises direct reduction furnace charging, direct reduction furnace discharging and melts and divide the stove charging; Directly reduction furnace charging: all press the back to add direct reduction furnace 1 by distribution device 19 iron ore raw material, in the present embodiment, directly reduction furnace is direct reduction shaft furnace; Directly reduction furnace discharging: with the high-temperature sponge iron decompression back input transportation batch can 14 of direct reduction furnace 1 output; Molten divide the stove charging: after will transport batch can 14 direct handlings to the molten charging system that divides stove 13 furnace roofs and all pressing high-temperature sponge iron is divided stove top charging system to be filled to melt in the branch stove 13 by molten; Production is carried out in the process, and the direct reduction furnace 1 charging process after directly reduction furnace 1 is feeded for the first time is with directly reduction furnace 1 discharging and molten branch stove 13 chargings are carried out simultaneously; Directly after reduction furnace 1 charging for the first time, system begins normal operation, directly in the reduction furnace charging, equalizing process, can transport combustion auxiliary material and sponge iron to the molten stove 13 that divides, and reaches the purpose of feeding simultaneously; Therefore, combustion auxiliary material and iron ore raw material can adopt same transportation feeding system, save the system building floor space and save construction cost.
In the present embodiment, directly transportation batch cans 14 are imported by swivel chute 15 in high-temperature sponge iron decompression back in the reduction furnace 1, transportation batch can 14 when filling with substance swivel chutes 15 rotate to the top charging of transportation batch can, after charging is finished, rotate transportation batch can 14 tops to position of readiness, handled easily avoids equipment room to interfere with each other; Described transportation batch can discharging opening is provided with the taper material valve, can be by the switching of batch can GRAVITY CONTROL cone valve; Described transportation batch can charging aperture is provided with the feeding warehouse lid of automatic shutter, opens automatically during charging, closes in the lifting transportation, improves the efficient of loading and unloading material process; All carry out dust removal by ventilation with extraneous contact position in the described high-temperature sponge iron transport process; High-temperature sponge iron is delivered to and molten divides a top charging system to carry out when filling with substance can to lead to inert gas shielding;
In the present embodiment, the high-temperature sponge iron temperature in the transport process is 500 ℃～700 ℃; Have comparatively is and the temperature range that melts the melting of branch stove to cut down the consumption of energy.
In the present embodiment, directly reduction furnace 1 charging and molten stove 13 whens filling with substance that divide are all pressed employing inert gas method for equalizing voltage, all press the gas that is discharged to discharge after dedusting or reclaim.
The invention also discloses a kind of direct reduction furnace-molten material system that takes on that divides the stove iron-smelting process to take on the material method that realizes, comprise: direct reduction furnace charging system, direct reduction furnace discharge system, sponge iron movement system and the molten stove charging system that divides, the stove charging system comprised the sponge iron charging system and fired the auxiliary material charging system in described molten minute; Directly the reduction furnace charging system comprises: the iron ore raw material feeding system is used for to direct reduction furnace transportation iron ore raw material; Iron ore raw material equalizer tank 3 is used to receive the iron ore raw material feeding system and comes iron ore raw material and iron ore raw material all is depressed into identical with direct reduction furnace pressure; The iron ore raw material equalizer tank is communicated in equal pressing system, it is equal piezodielectric that the equal pressing system of present embodiment adopts nitrogen, comprise pressurising system 4 and exhaust system 41, iron ore raw material equalizer tank 3 is communicated in pressurising system 4 by equalizer valve, is communicated in exhaust system 41 by purge valve.Iron ore raw material distributing device 19 is used to receive the equal pressing system of iron ore raw material and comes iron ore raw material and iron ore raw material is distributed into direct reduction furnace 1, and in the present embodiment, directly reduction furnace 1 is direct reduction shaft furnace; Directly the reduction furnace discharge system comprises: direct reduction furnace discharging decompression jar 16 is used to receive the sponge iron of direct reduction furnace 1 output and sponge iron is decompressed to normal pressure; Sponge iron discharging chute 15 is used to receive direct reduction furnace discharging decompression jar 16 supplied materials and is delivered to the sponge iron movement system; Present embodiment sponge iron discharging chute 15 adopts the swivel chute structure; The sponge iron movement system comprises: sponge iron transportation batch can 14 is used to receive sponge iron discharging chute 15 and comes sponge iron and transportation; Boom hoisting 7 is used for that sponge iron is transported batch can and winches to the sponge iron charging system; In the present embodiment, boom hoisting 7 can adopt driving; The sponge iron charging system comprises: sponge iron receiving tank 20 is used to receive sponge iron transportation batch can and comes sponge iron; Can adopt the receiving tank that has the weighing function; The molten stove sponge iron equalizer tank 21 that divides is used to receive the sponge iron receiving tank and comes sponge iron and sponge iron all is depressed into also molten minute furnace pressure power is identical; The molten stove sponge iron equalizer tank 21 that divides is communicated in pressurising system 4 by equalizer valve, is communicated in exhaust system 41 by purge valve.The molten stove distributing device 22 that divides is used to receive sponge iron equalizer tank 21 and comes sponge iron and sponge iron is distributed into the molten stove 13 that divides; Combustion auxiliary material charging system comprises: combustion auxiliary material feeding system is used for to the molten stove transportation combustion auxiliary material that divides; Combustion auxiliary material equalizer tank 10 is used for receiving combustion auxiliary material feeding system and fires auxiliary material and the combustion auxiliary material all is depressed into identical and deliver to molten branch stove distributing device 22 with the molten furnace pressure power of dividing; Combustion auxiliary material equalizer tank 10 is communicated in pressurising system 4 by equalizer valve, is communicated in exhaust system 41 by purge valve.Stove distributing device 22 charging apertures were communicated in a material-collecting funnel 12 in described molten minute, and described combustion auxiliary material equalizer tank 10 and sponge iron equalizer tank 21 all are communicated in material-collecting funnel 12; The simply compactness of material system architecture that takes on of the present invention, floor space is little, and construction cost is low.
In the present embodiment, described iron ore raw material equalizer tank 3 is delivered to iron ore raw material distributing device 19 by iron ore raw material pans 2 with iron ore raw material; Described combustion auxiliary material equalizer tank 10 will fire auxiliary material by combustion auxiliary material pans 11 delivers to material-collecting funnel 12; Adopt the pans structure to be beneficial to iron ore raw material and combustion auxiliary material are had and all press evenly and the effect of buffering.
In the present embodiment, described direct reduction furnace discharging decompression jar 16, sponge iron transportation batch can 14, sponge iron receiving tank 20 and the molten stove sponge iron equalizer tank 21 that divides are provided with heat insulation and wear resistance protection internal layer; Be applicable to the acknowledgement of consignment of the sponge iron of higher temperature, avoid temperature drop excessive, reduce and smelt energy consumption.
In the present embodiment, sponge iron transportation batch can 14 is arranged on and prevents the guider that departs from the lifting process, described guider comprises roller 23 that is arranged on the sponge iron transportation batch can and the guide rails 24 that fixedly install with roller 23 corresponding edge lifting directions, and present embodiment is fixedly set in molten the branch on the stove framework; Described roller 23 is two and is 120 ° of distributions with central angle that guide rail 24 is relative with roller to be two, is 60 ° of angles between the rail level of two guide rails 24; Preventing in the lifting process that sponge iron transportation batch can waves reverses, and is beneficial to the held stationary lifting.
In the present embodiment, the shared elevating belt 6 of described iron ore raw material feeding system and combustion auxiliary material feeding system, elevating belt 6 blankings place are provided with raw material swivel chute 5, and described raw material swivel chute 5 goes out material level and comprises that the combustion auxiliary material that is communicated with combustion auxiliary material horizontal conveyor belt 8 goes out material level and goes out material level with the iron ore raw material that is communicated in the iron ore raw material equalizer tank; Combustion auxiliary material and iron ore raw material common sparing acknowledgement of consignment equipment, the floor space of saving equipment when raising the efficiency.
In the present embodiment, sponge iron transportation batch can charging place and discharging go out all to be provided with ventilating dust-arrester; Also comprise with high-temperature sponge iron carry with other flow process and with the second direct reduction furnace discharging decompression jar 17 that direct reduction furnace discharging decompression jar is arranged in parallel, sponge iron can be used for other technology 18; Described combustion auxiliary material feeding system comprises combustion auxiliary material horizontal conveyor belt 8 and the receiver bin 9 of carrying flow process to set gradually by the combustion auxiliary material, and receiver bin 9 bottom discharge mouths are communicated in combustion auxiliary material equalizer tank 10.
In the present embodiment, its top feed mouth of iron ore raw material equalizer tank 3, combustion auxiliary material equalizer tank 10 and sponge iron equalizer tank 21 all is provided with seal valve, and the bottom discharge mouth all is provided with the material lock; Its top feed mouth of iron ore raw material pans 2 and combustion auxiliary material pans 11 all is provided with seal valve, and the bottom discharge mouth all is provided with the material lock; Between described direct reduction furnace 1 discharging opening and direct reduction furnace discharging decompression jar 16 and second direct reduction furnace discharging decompression jar 17 stop valve is set respectively, the import and export of direct reduction furnace discharging decompression jar 16 and second direct reduction furnace discharging decompression jar 17 are provided with revolving valve respectively.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment to technical scheme of the present invention or/and be equal to replacement, and not breaking away from the aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. direct reduction furnace-molten stove iron-smelting process that divides takes on the material method, it is characterized in that: comprise direct reduction furnace charging, direct reduction furnace discharging and melt and divide the stove charging;
Directly reduction furnace charging: all press the back to add direct reduction furnace iron ore raw material by distribution device;
Directly reduction furnace discharging: with the high-temperature sponge iron decompression back input transportation batch can of direct reduction furnace output;
Molten divide the stove charging: will transport the direct handling of batch can and after the molten charging system that divides the stove furnace roof is all pressed, high-temperature sponge iron is filled in the molten branch stove by the molten stove top charging system that divides;
Production is carried out in the process, and the direct reduction furnace charging process after directly reduction furnace is feeded for the first time divides the stove charging to carry out simultaneously with direct reduction furnace discharging with molten.
2. direct reduction furnace according to claim 1-molten stove iron-smelting process that divides takes on the material method, it is characterized in that: directly batch can is transported by the swivel chute input in high-temperature sponge iron decompression back in the reduction furnace, transportation batch can when filling with substance swivel chute rotates to the top charging of transportation batch can, after charging is finished, rotate transportation batch can top to position of readiness; All carry out dust removal by ventilation with extraneous contact position in the described high-temperature sponge iron transport process.
3. direct reduction furnace according to claim 2-molten stove iron-smelting process that divides takes on the material method, and it is characterized in that: the high-temperature sponge iron temperature in the transport process is 500 ℃～700 ℃.
4. direct reduction furnace according to claim 3-molten branch stove iron-smelting process takes on the material method, it is characterized in that: directly reduction furnace charging and the molten stove when filling with substance that divides are all pressed employing inert gas method for equalizing voltage, all press the gas that is discharged to discharge after dedusting or reclaim.
5. realize the described direct reduction furnace of the arbitrary claim of claim 1 to 4-molten material system that takes on that divides the stove iron-smelting process to take on the material method for one kind, it is characterized in that: comprising: direct reduction furnace charging system, direct reduction furnace discharge system, sponge iron movement system and the molten stove charging system that divides, the stove charging system comprised the sponge iron charging system and fired the auxiliary material charging system in described molten minute;
Directly the reduction furnace charging system comprises:
The iron ore raw material feeding system is used for to direct reduction furnace transportation iron ore raw material;
The iron ore raw material equalizer tank is used to receive the iron ore raw material feeding system and comes iron ore raw material and iron ore raw material all is depressed into identical with direct reduction furnace pressure;
The iron ore raw material distributing device is used to receive the equal pressing system of iron ore raw material and comes iron ore raw material and iron ore raw material is distributed into direct reduction furnace;
Directly the reduction furnace discharge system comprises:
Directly reduction furnace discharging decompression jar is used to receive the sponge iron of direct reduction furnace output and sponge iron is decompressed to normal pressure;
The sponge iron discharging chute is used to receive direct reduction furnace discharging decompression jar supplied materials and is delivered to the sponge iron movement system;
The sponge iron movement system comprises:
Sponge iron transportation batch can is used to receive the sponge iron discharging chute and comes sponge iron and transportation;
Boom hoisting is used for that sponge iron is transported batch can and winches to the sponge iron charging system;
The sponge iron charging system comprises:
The sponge iron receiving tank is used to receive sponge iron transportation batch can and comes sponge iron;
The molten stove sponge iron equalizer tank that divides is used to receive the sponge iron receiving tank and comes sponge iron and sponge iron all is depressed into also molten minute furnace pressure power is identical;
The molten stove distributing device that divides is used to receive the sponge iron equalizer tank and comes sponge iron and sponge iron is distributed into the molten stove that divides;
Combustion auxiliary material charging system comprises:
Combustion auxiliary material feeding system is used for to the molten stove transportation combustion auxiliary material that divides;
Combustion auxiliary material equalizer tank is used for receiving combustion auxiliary material feeding system and fires auxiliary material and the combustion auxiliary material all is depressed into identical and deliver to molten branch stove distributing device with the molten furnace pressure power of dividing;
Stove distributing device charging aperture was communicated in a material-collecting funnel in described molten minute,
Described combustion auxiliary material equalizer tank and sponge iron equalizer tank all are communicated in material-collecting funnel.
6. the material system that takes on according to claim 5 is characterized in that: described iron ore raw material equalizer tank is delivered to the iron ore raw material distributing device by the iron ore raw material pans with iron ore raw material; Described combustion auxiliary material equalizer tank will fire auxiliary material by combustion auxiliary material pans delivers to material-collecting funnel.
7. the material system that takes on according to claim 6 is characterized in that: described direct reduction furnace discharging decompression jar, sponge iron transportation batch can, sponge iron receiving tank and the molten stove sponge iron equalizer tank that divides are provided with heat insulation and wear resistance protection internal layer.
8. the material system that takes on according to claim 7, it is characterized in that: sponge iron transportation batch can is arranged on and prevents the guider that departs from the lifting process, described guider comprises the roller that is arranged on the sponge iron transportation batch can and the guide rail that should fixedly install along the lifting direction with pair of rollers, described roller is two and is 120 ° of distributions with central angle that two guide rail rail levels are 60 ° of angles.
9. the material system that takes on according to claim 8, it is characterized in that: the shared elevating belt of described iron ore raw material feeding system and combustion auxiliary material feeding system, elevating belt blanking place is provided with the raw material swivel chute, and described raw material swivel chute goes out material level and comprises that the combustion auxiliary material that is communicated with combustion auxiliary material horizontal conveyor belt goes out material level and goes out material level with the iron ore raw material that is communicated in the iron ore raw material equalizer tank.
10. the material system that takes on according to claim 9 is characterized in that: sponge iron transportation batch can charging place and discharging go out all to be provided with ventilating dust-arrester; Also comprise high-temperature sponge iron is carried and other flow process and the second direct reduction furnace discharging decompression jar that is arranged in parallel with direct reduction furnace discharging decompression jar; Described combustion auxiliary material feeding system comprises combustion auxiliary material horizontal conveyor belt and the receiver bin of carrying flow process to set gradually by the combustion auxiliary material, and receiver bin bottom discharge mouth is communicated in combustion auxiliary material equalizer tank.
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| CN 201010561199 CN102003881A (en) | 2010-11-26 | 2010-11-26 | Loading and unloading method and system of iron making process with direct reduction furnace and melting furnace |
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Application publication date: 20110406 |