CN203810892U - Coal-oxygen blowing melting separation shaft furnace - Google Patents
Coal-oxygen blowing melting separation shaft furnace Download PDFInfo
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- CN203810892U CN203810892U CN201420173793.2U CN201420173793U CN203810892U CN 203810892 U CN203810892 U CN 203810892U CN 201420173793 U CN201420173793 U CN 201420173793U CN 203810892 U CN203810892 U CN 203810892U
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- shaft furnace
- coal
- furnace body
- heater
- oxygen
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- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 39
- 239000001301 oxygen Substances 0.000 title claims abstract description 39
- 238000002844 melting Methods 0.000 title abstract description 10
- 230000008018 melting Effects 0.000 title abstract description 10
- 238000000926 separation method Methods 0.000 title abstract description 7
- 238000007664 blowing Methods 0.000 title abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 90
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000003245 coal Substances 0.000 claims abstract description 34
- 239000007789 gas Substances 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 22
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003546 flue gas Substances 0.000 claims abstract description 16
- 238000002485 combustion reaction Methods 0.000 claims abstract description 11
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002817 coal dust Substances 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 239000007921 spray Substances 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims description 39
- 239000002893 slag Substances 0.000 claims description 18
- 239000012716 precipitator Substances 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 6
- 238000010079 rubber tapping Methods 0.000 claims description 5
- 239000002912 waste gas Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 8
- 239000000446 fuel Substances 0.000 abstract description 5
- 239000000843 powder Substances 0.000 abstract description 4
- 238000001035 drying Methods 0.000 abstract 1
- 239000010795 gaseous waste Substances 0.000 abstract 1
- 230000009467 reduction Effects 0.000 description 12
- 239000007788 liquid Substances 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 5
- 238000009628 steelmaking Methods 0.000 description 5
- 239000003034 coal gas Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 244000144985 peep Species 0.000 description 2
- 229940098458 powder spray Drugs 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- 229910000863 Ferronickel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000013316 zoning Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The utility model discloses a coal-oxygen blowing melting separation shaft furnace, comprising a shaft furnace body, a water cooling coal powder injection system, a pure oxygen top blast system, and a DRI (Direct Reduced Iron) charging system. Furnace charge is in connection with the DRI charging system through a pneumatic conveying pipeline; the DRI charging system is in connection with the shaft furnace body; the top of the shaft furnace body is provided with the pure oxygen top blast system. The shaft furnace body is provided with a water cooling spray gun; the water cooling coal powder injection system sprays coal into the shaft furnace body through the water cooling spray gun; gaseous wastes generated in the shaft furnace body is treated through a purifier. The utility model provides a coal-oxygen blowing melting separation shaft furnace which has no special requirements for fuel property, and is convenient to use local materials; in addition, one-time investment is low, investment is small and cost is low; high temperature flue gas in the shaft furnace body performs secondary combustion in the upper portion, and preheats air through a first high efficiency heat accumulator; the tail gas of the first high efficiency heat accumulator is used for drying coal dust and can also be discharged into air after cooling debusting, which can save energy and protect environment.
Description
Technical field
The utility model relates to a kind of iron-smelting device, is specifically related to the molten minute shaft furnace of a kind of coal-oxygen winding-up.
Background technology
The production of current DRI is developed rapidly, produce DRI method also a lot, there is gas base, have coal-based, but the reduced iron degree of metalization of some production lower (﹤ 80%), gangue higher (﹥ 6%), for this class reduced iron, at postorder, must adopt electric furnace or iron liquid furnace to melt minute, and further reduction could be made raw material or do other application to steel-making.Although the reduction furnace that adopts having is produced, just to some electing property of element reduction, as the production of ferronickel, reduced nickel optionally just in rotary hearth furnace, and that its postorder also need carry out scum in molten minute stove is separated and be further purified to put forward high nickel content.The and for example production of vanadium ferrotianium, rotary hearth furnace only reduces to vanadium, the reduction of iron and titanium slag separation are carried out in molten minute stove thereafter, although have the reduced iron quality of producing also fine, as gas base is produced reduced iron, degree of metalization high (﹥ 92%), gangue low (﹤ 2%) are electric furnace steel making quality raw materials, but can not supply pneumatic steelmaking, after being only fused into molten iron, could supply pneumatic steelmaking, in addition the short of electricity of reduced iron production location, lack again burnt, at its postorder also essential gas base or the coal-based molten minute stove built, molten being divided into after molten iron, just can be used.
In view of above situation, it is very necessary that a minute stove is melted in its postorder construction, and to short of electricity, scarce burnt area establishment gas base or the coal-based molten stove that divides are more necessary again.We study and create the molten minute shaft furnace of coal-oxygen is exactly in order to fill up China's reduced iron, to produce the blank of this respect, for China's reduced iron prodution and development, makes and should have contribution.
Being currently applied to the molten minute stove of DRI has electric smelting to divide stove and iron liquid furnace, it is the mining industry type of furnace that electric smelting divides the stove main type of furnace, its heat is mainly charging resistance heat, its general self-baking electrode that adopts, low-voltage, large current practice heat, melting batch, direct-reduction is further reduced and make to melt body iron, molten iron is made in slag separation.This type of electric smelting divides stove generally to adopt stationary furnace seat, and interruption is tapped a blast furnace, and is relatively applicable to fairly large molten minute Workshop Production.Its major defect is that location need to have powerful electric power, and power consumption is high, and cost is high, and power-shortage area can not adopt.
The current main horizontal pneumatic base of the iron liquid furnace iron liquid furnace for molten minute, it provides melting institute calorific requirement by the burning of coal gas-oxygen, by convection current and radiation, passes to material, crosses that middle melt obtains further reduction and molten iron is made in the separation of iron-slag in material melting.Its major defect is that coal gas workshop will be built in location, and iron liquid furnace and affiliated facility investment are also large, and the iron liquid furnace thermal efficiency is low, and energy consumption is high, and cost is also high, so it can only be suitable for short of electricity scarce burnt area use again.
Utility model content
Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides the winding-up of a kind of coal-oxygen molten minute shaft furnace, and fuel performance is not had to specific (special) requirements, be convenient to gather materials on the spot, and one-time investment is low, and investment economizes, cost is lower.
Technical scheme: for achieving the above object, the molten minute shaft furnace of a kind of coal of the present utility model-oxygen winding-up, comprise shaft furnace body of heater, water-cooled coal injection system, pure oxygen top blast system and DRI charging system, furnace charge is connected with DRI charging system by pneumatic conveyance conduit, DRI charging system is connected with shaft furnace body of heater, the top of shaft furnace body of heater is provided with pure oxygen top blast system, shaft furnace body of heater is provided with water cooled lance, water-cooled coal injection system is by water cooled lance in coal spray people shaft furnace body of heater, and the off-gas producing in shaft furnace body of heater is processed by purifier.
Wherein, DRI, Direct Reduced Iron, DRI.
As preferably, described shaft furnace body of heater is connected with forehearth, and shaft furnace body of heater adopts rainbow formula iron notch to be connected with forehearth.
As preferably, described shaft furnace body of heater comprises lower furnace shell, upper furnace shell and shaft furnace bell, and water cooled lance is positioned on furnace shell, and lower furnace shell is provided with emptying tapping hole and slag notch, and shaft furnace bell is connected with pure oxygen top blast system.
As preferably, described water cooled lance has 6, and 6 water cooled lances are uniformly distributed, and become miter angle to be arranged on upper furnace shell with vertical furnace body axis.
As preferably, described purifier comprises gravitational precipitator, hot air delivery system, flue gas cooling and dedusting system, off-gas is by gravitational precipitator dedusting, then enter in hot air delivery system, hot air delivery system is provided with combustion air entrance, waste gas is carried out to second-time burning, and the hot blast of generation enters in water cooled lance, and remaining tail gas is discharged to outdoor or for dry coal dust by flue gas cooling and dedusting system.
As preferably, described hot air delivery system comprises the first high-efficiency thermal storage device and the second high-efficiency thermal storage device, the first high-efficiency thermal storage device top receives the air from the off-gas in gravitational precipitator and combustion air entrance, the hot gas producing after sufficient combustion is sent in water cooled lance by the turbine blower fan on the first high-efficiency thermal storage device top, remaining tail gas enters the second high-efficiency thermal storage device by the pipeline of bottom, is discharged to outdoor or for dry coal dust by flue gas cooling and dedusting system.
As preferably, described flue gas cooling and dedusting system comprises mechanical air cooler, sack cleaner and chimney, mechanical air cooler is connected with the second high-efficiency thermal storage device, and the tail gas in the second high-efficiency thermal storage device is cooling by mechanical air cooler, and then sack cleaner dedusting is discharged to outdoor by chimney.
As preferably, described DRI charging system comprises reception storehouse, storage warehouse, tremie pipe and pressure equaliser, and described reception storehouse receives the raw material in rotary hearth furnace, is stored in storage warehouse, by tremie pipe, enter in shaft furnace body of heater, pressure equaliser is adjusted the pressure size in DRI charging system.
In the utility model, shaft furnace body of heater is the key equipment in the molten minute shaft furnace of coal-oxygen winding-up, it has the drastic reduction function of heating to DRI, molten minute and DRI, it is comprised of shaft furnace body of heater, water cooled cover, flue, maintenance fire door and peep hole, at upper furnace shell, be provided with 6 water cooled lances and 3 overhaul of the equipments doors, furnace bottom is provided with emptying tapping hole and slag notch.
Shaft furnace bell is comprised of water cooled cover, water-cooled flue.Water cooled cover is provided with 1 furnace roof oxygen rifle, 8 charging apertures and 1 peep hole and 1 telephotography hole etc., and water-cooled coal injection system comprises that coal dust is carried, collected, winding-up, distribute and tuyere injection device.
Furnace roof oxygen rifle is arranged on shaft furnace body of heater top, design considers that gun slot has with a certain distance from iron bath bottom, during practical operation, gun slot is adjustable from bottom, molten bath, oxygen concentration approximately 95%, its objective is and on stove top, form zoneofoxidation, produce CO with bottom and burn, by convection heat transfer' heat-transfer by convection, the DRI to continuous uniform blanking expects and flowing molten iron institute's red-hot flame that produces.
Shaft furnace body of heater is provided with a forehearth, and shaft furnace body of heater communicates with forehearth by rainbow formula iron notch, and its object, except storing molten iron, also keeps the liquid level of shaft furnace body of heater, keeps the certain iron water amount of shaft furnace body of heater, to guarantee the carrying out of molten bath thermal response.
Beneficial effect: the molten minute shaft furnace of a kind of coal of the present utility model-oxygen winding-up, compared with prior art, has the following advantages:
1, the fuel of the molten minute shaft furnace of coal-oxygen winding-up is power coal dust, and to fuel performance, without specific (special) requirements, resource face is the widest, is convenient to gather materials on the spot, and can lack again coal gas area in short of electricity and adopt;
2, solid state reduction district be connected molten zoning design thereafter in same shaft furnace body of heater, DRI material by tremie pipe by constant power, add in shaft furnace body of heater continuously, avoided " pipeline " to form, do not deposited the problems such as permeability of stock column, dross and hanging, be conducive to gas stream in the stove and distribute.
3, the molten division technique of the molten minute shaft furnace of coal-oxygen winding-up can adopt total oxygen or molten minute of high oxygen enrichment percentage and reduction.
4, the molten minute shaft furnace of coal-oxygen winding-up is in closed shaft furnace body of heater, high-temperature flue gas carries out second-time burning on top, thereafter again by the first high-efficiency thermal storage device preheated air, the first high-efficiency thermal storage device tail gas is used further to dry coal dust, also can be by entering atmosphere after cooling and dedusting, thus the molten minute shaft furnace of coal-oxygen winding-up be a saving furnace be also an environment-friendly stove.
5, the molten minute shaft furnace of coal-oxygen winding-up and other molten minute more single flow process of stove smelting equipment are short, corollary equipment that need not be huge, in accordance with mentioned above principle, investment and the construction of power plant, gas generating station and coking plant have been exempted, only need supporting fine coal processing and oxygen generating plant, so factory's disposable investment is lower.
6, the molten minute shaft furnace of coal-oxygen winding-up is transformed a little and can also be transformed into melting, reduction iron production (molten iron) device, for developing nickel ore concentrate powder (fine iron breeze) step ironmaking lays the foundation, is a kind of extremely promising molten minute and ironmaking technology.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, the molten minute shaft furnace of a kind of coal of the present utility model-oxygen winding-up, comprise rotary hearth furnace 10, shaft furnace body of heater 1, water-cooled coal injection system 2 and DRI charging system 5, rotary hearth furnace 10 is connected with DRI charging system 5 by pneumatic conveyance conduit, DRI charging system 5 is connected with shaft furnace body of heater 1, the top of shaft furnace body of heater 1 is provided with pure oxygen top blast system 4, shaft furnace body of heater 1 is provided with water cooled lance, water-cooled coal injection system 2 is by water cooled lance in coal spray people shaft furnace body of heater 1, and the off-gas of shaft furnace body of heater 1 interior generation is processed by purifier.
In the utility model, shaft furnace body of heater 1 is connected with forehearth 6, shaft furnace body of heater 1 adopts rainbow formula iron notch to be connected with forehearth 6, shaft furnace body of heater 1 comprises lower furnace shell, upper furnace shell and shaft furnace bell, water cooled lance is positioned on furnace shell, lower furnace shell is provided with emptying tapping hole and slag notch 8, shaft furnace bell is connected with pure oxygen top blast system 4, water cooled lance has 6, 6 water cooled lances are uniformly distributed, become miter angle to be arranged on upper furnace shell with shaft furnace body of heater 1 axis, purifier comprises gravitational precipitator 9, hot air delivery system 3, flue gas cooling and dedusting system 7, off-gas is by gravitational precipitator 9 dedustings, then enter in hot air delivery system 3, hot air delivery system 3 is provided with combustion air entrance, waste gas is carried out to second-time burning, the hot blast producing enters in water cooled lance, remaining tail gas is discharged to outdoor or for dry coal dust by flue gas cooling and dedusting system 7.
In the utility model, hot air delivery system 3 two covers that are connected in parallel, hot air delivery system 3 comprises the first high-efficiency thermal storage device and the second high-efficiency thermal storage device, the first high-efficiency thermal storage device top receives the air from the off-gas in gravitational precipitator 9 and combustion air entrance, the hot gas producing after sufficient combustion is sent in water cooled lance by the turbine blower fan on the first high-efficiency thermal storage device top, remaining tail gas enters the second high-efficiency thermal storage device by the pipeline of bottom, is discharged to outdoor or for dry coal dust by flue gas cooling and dedusting system 7; Flue gas cooling and dedusting system 7 comprises mechanical air cooler, sack cleaner and chimney, mechanical air cooler is connected with the second high-efficiency thermal storage device, tail gas in the second high-efficiency thermal storage device is cooling by mechanical air cooler, and then sack cleaner dedusting is discharged to outdoor by chimney; DRI charging system 5 comprises reception storehouse, storage warehouse, tremie pipe and pressure equaliser, receive storehouse and receive the raw material in rotary hearth furnace 10, be stored in storage warehouse, by tremie pipe, enter in shaft furnace body of heater 1, pressure equaliser is adjusted the pressure size in DRI charging system 5.
Operation principle of the present utility model:
The molten minute shaft furnace of coal-oxygen winding-up has the function of fusing (scum is separated) and further dark reduction.Its melting, reduction principle can be divided into two part narrations from definition, and top is zoneofoxidation, and bottom is melting, reducing zone.
In melting, reducing zone, be more than 1450 ℃ high temperature furnace slag district, in molten bath, free carbon and oxygen burn, and are dissolved in iron liquid, and carbon with oxide (FeO) reaction of red-hot iron, in conjunction with generating ferro element and CO, and produces following reaction again:
2C＋O
2→2CO (1)
C coal → [C] iron (2)
Iron+the CO (3) of [C] iron+(FeO) → [Fe]
In upper zone, from CO and the H2 of top jet oxygen and 1 generation of shaft furnace body of heater, carry out oxidizing fire and carry out following exothermic reaction, that is:
2CO＋O
2→2CO
2 (4)
2H
2＋O
2→2H
2O (5)
The N2 of the H2 that in the CO that reaction (1) (3) produce in iron bath and coal, volatilization decomposition produces and winding-up material carrier forms mixed gas, in top zoneofoxidation and O2 burning, produce exothermic reaction, the red-hot flame that produces by convection heat transfer' heat-transfer by convection pass to continuously, the even reduction flowing molten iron of blanking, Coal powder spray the burning coal gas that produces and heat energy, strongly overflow and rise and heat liquid slag, iron and formed mixing " spring ".The heat energy that top exothermic oxidation reaction produces, by conduction and radiation, improved the temperature that slag iron mixes " spring " again, the reduced iron adding continuously in dropping into " spring " after at once fusing, and fully reduced in " spring ", meanwhile drop to slag in molten bath, iron and carry out again the separation of slag iron, the larger molten iron of proportion is deposited on bottom, molten bath and forehearth 6 waits are tapped a blast furnace, and lighter slag sink-float is waited for and being slagged tap on molten bath.
The utility model specific works process:
The molten minute shaft furnace of coal-oxygen winding-up is raw materials used is DRI (DRI), it is supplied by rotary hearth furnace 10 or gas shaft furnace, by pneumatic conveyance conduit, be transported to furnace roof pawl formula and receive storehouse, the DRI material of approximately 800 ℃ continuously, evenly adds in shaft furnace body of heater 1 from shaft furnace body of heater 1 top cover by pawl formula storage warehouse and 8 tremie pipes.
Fuel and the reducing agent of the molten minute shaft furnace of coal-oxygen winding-up, through 6 cover water cooled lances, be directly injected in shaft furnace body of heater 1 bottom iron bath, and oxygen sprays into from shaft furnace body of heater 1 furnace roof portion, and post-combustion rate is about 60-70%.The required hot blast of water cooled lance is supplied by being located near 4 high-efficiency thermal storage devices.
The molten minute flue gas that shaft furnace produces (or coal gas) of coal-oxygen winding-up, by the rear heat supply wind furnace of gravitational precipitator 9, use, high-temperature flue gas containing CO reacts with heating the interior air of preheating the first high-efficiency thermal storage device, produces hot blast and sends into pulverized coal gun by turbine blower fan.The second high-efficiency thermal storage device tail gas can be for moisture-free coal powder, also can enter atmosphere by after cooling, dedusting.
For stopping, blow-on is convenient, wishes that a molten minute stove workshop can be equipped with 1 20t intermediate frequency cupola furnace, in the molten iron impouring shaft furnace body of heater 1 of 1450 ℃, then Coal powder spray and the metallurgical reaction that can will begin in a minute while adding DRI.In order to maintain molten bath certain iron liquid height, design is considered to be provided with a forehearth 6 as molten iron discharger, and shaft furnace body of heater 1 is equipped with the casthouse equipments such as tapping machine and clay gun that tap a blast furnace.Shaft furnace body of heater taps a blast furnace approximately 15 times for 1 every day, and the 2Gt that at every turn taps a blast furnace configures 2 1Gt hot-metal bottles arranged side by side while normally producing, and by swinging water conservancy diversion channel, enters in two 1Gt hot-metal bottles, then by electronic hot-metal ladle and carriage, is transported into converter or electric furnace shop is used to steel-making.
Slag is discharged by the scum hole batch (-type) of other setting, by slag trough, is washed into grain slag, and in pond, heavy hall, slag is grabbed bucket by crane, packs dump truck into and transports user to, and the water after the granulation of slag recycles use by water pump after flowing into after precipitation poultry pond.
The above is only preferred embodiment of the present utility model; be noted that for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. a minute shaft furnace is melted in coal-oxygen winding-up, it is characterized in that: comprise shaft furnace body of heater (1), water-cooled coal injection system (2), pure oxygen top blast system (4) and DRI charging system (5), furnace charge is connected with DRI charging system (5) by pneumatic conveyance conduit, DRI charging system (5) is connected with shaft furnace body of heater (1), the top of shaft furnace body of heater (1) is provided with pure oxygen top blast system (4), shaft furnace body of heater (1) is provided with water cooled lance, water-cooled coal injection system (2) sprays coal in people's shaft furnace body of heater (1) by water cooled lance, the off-gas producing in shaft furnace body of heater (1) is processed by purifier.
2. the molten minute shaft furnace of coal according to claim 1-oxygen winding-up, is characterized in that: described shaft furnace body of heater (1) is connected with forehearth (6), and shaft furnace body of heater (1) adopts rainbow formula iron notch to be connected with forehearth (6).
3. a minute shaft furnace is melted in the winding-up of coal according to claim 2-oxygen, it is characterized in that: described shaft furnace body of heater (1) comprises lower furnace shell, upper furnace shell and shaft furnace bell, water cooled lance is positioned on furnace shell, lower furnace shell is provided with emptying tapping hole and slag notch (8), and shaft furnace bell is connected with pure oxygen top blast system (4).
4. the molten minute shaft furnace of coal according to claim 3-oxygen winding-up, is characterized in that: described water cooled lance has 6, and 6 water cooled lances are uniformly distributed, and become miter angle to be arranged on upper furnace shell with shaft furnace body of heater (1) axis.
5. a minute shaft furnace is melted in the winding-up of coal according to claim 1-oxygen, it is characterized in that: described purifier comprises gravitational precipitator (11), hot air delivery system (3), flue gas cooling and dedusting system (7), off-gas is by gravitational precipitator (11) dedusting, then enter in hot air delivery system (3), hot air delivery system (3) is provided with combustion air entrance, waste gas is carried out to second-time burning, the hot blast producing enters in water cooled lance, and remaining tail gas is discharged to outdoor or for being dried coal dust by flue gas cooling and dedusting system (7).
6. a minute shaft furnace is melted in the winding-up of coal according to claim 5-oxygen, it is characterized in that: described hot air delivery system (3) comprises the first high-efficiency thermal storage device and the second high-efficiency thermal storage device, the first high-efficiency thermal storage device top receives the air from the off-gas in gravitational precipitator (11) and combustion air entrance, the hot gas producing after sufficient combustion is sent in water cooled lance by the turbine blower fan on the first high-efficiency thermal storage device top, remaining tail gas enters the second high-efficiency thermal storage device by the pipeline of bottom, by flue gas cooling and dedusting system (7), be discharged to outdoor or for dry coal dust.
7. according to the molten minute shaft furnace of the coal described in claim 5 or 6-oxygen winding-up, it is characterized in that: described flue gas cooling and dedusting system (7) comprises mechanical air cooler, sack cleaner and chimney, mechanical air cooler is connected with the second high-efficiency thermal storage device, tail gas in the second high-efficiency thermal storage device is cooling by mechanical air cooler, and then sack cleaner dedusting is discharged to outdoor by chimney.
8. a minute shaft furnace is melted in the winding-up of coal according to claim 1-oxygen, it is characterized in that: described DRI charging system (5) comprises reception storehouse, storage warehouse, tremie pipe and pressure equaliser, described reception storehouse receives the raw material in rotary hearth furnace (10), be stored in storage warehouse, by tremie pipe, enter in shaft furnace body of heater (1), pressure equaliser is adjusted the pressure size in DRI charging system (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420173793.2U CN203810892U (en) | 2014-04-10 | 2014-04-10 | Coal-oxygen blowing melting separation shaft furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420173793.2U CN203810892U (en) | 2014-04-10 | 2014-04-10 | Coal-oxygen blowing melting separation shaft furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203810892U true CN203810892U (en) | 2014-09-03 |
Family
ID=51449632
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420173793.2U Expired - Fee Related CN203810892U (en) | 2014-04-10 | 2014-04-10 | Coal-oxygen blowing melting separation shaft furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107760809A (en) * | 2017-09-21 | 2018-03-06 | 江苏省冶金设计院有限公司 | A kind of ore smelting device and its smelting process |
| CN115725810A (en) * | 2022-11-14 | 2023-03-03 | 上海驰春节能科技有限公司 | Ultra low CO 2 Device and method for producing cement clinker by integrating steelmaking and gas production and coupling |
-
2014
- 2014-04-10 CN CN201420173793.2U patent/CN203810892U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107760809A (en) * | 2017-09-21 | 2018-03-06 | 江苏省冶金设计院有限公司 | A kind of ore smelting device and its smelting process |
| CN115725810A (en) * | 2022-11-14 | 2023-03-03 | 上海驰春节能科技有限公司 | Ultra low CO 2 Device and method for producing cement clinker by integrating steelmaking and gas production and coupling |
| CN115725810B (en) * | 2022-11-14 | 2023-12-26 | 上海驰春节能科技有限公司 | Ultra low CO 2 Device and method for producing cement clinker by steel-making and gas-making integrated coupling |
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