CN205917292U - Melting furnace reduction system of jetting oxygen - Google Patents
Melting furnace reduction system of jetting oxygen Download PDFInfo
- Publication number
- CN205917292U CN205917292U CN201620840779.2U CN201620840779U CN205917292U CN 205917292 U CN205917292 U CN 205917292U CN 201620840779 U CN201620840779 U CN 201620840779U CN 205917292 U CN205917292 U CN 205917292U
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- shaft furnace
- reduction shaft
- furnace
- baffle plate
- feeding mouth
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Abstract
The utility model relates to a melting furnace reduction system of jetting oxygen. The system includes reduction shaft furnace, melting furnace and oxygen rifle, wherein, reduction shaft furnace includes that powdered ore and flux pan feeding mouth, buggy pan feeding mouth, feed opening, flue gas enter the mouth, be equipped with adjustable dip angle's baffle in reduction shaft furnace's the furnace, its pivot with supporting is hollow structure, melting furnace includes pan feeding mouth, exhanst gas outlet and discharge gate, pan feeding mouth intercommunication reduction shaft furnace's feed opening, the exhanst gas outlet intercommunication reduction shaft furnace's flue gas entry, the spray gun head of oxygen rifle locates in the melting furnace, the oxygen rifle certainly melting furnace's furnace roof stretches into in the melting furnace. The utility model discloses a melting furnace reduction system of jetting oxygen, through the speed that the baffle that sets up adjustable dip angle in the reduction shaft furnace descends with the control powdered ore and the time of stop, the reduction effect of powdered ore has been guaranteed.
Description
Technical field
This utility model generally relates to a kind of molten point of stove also original system and in particular to a kind of molten point of stove of injecting oxygen reduces
System.
Background technology
Non-blast furnace ironmaking is a direction of Iron ＆ Steel Development, and main purpose is to smelt and difficult reduced ore to realize low cost
Utilization, and for realizing cleanly production.In recent years coal-base fusing reduction and direct-reduction+electric furnace melt the technology of dividing with
And coal-based direct reduction+gas furnace melts point technology and progressively develops into for one of iron-smelting process technology, this technique had with coal generation
Burnt, reduction temperature is high, the duration of heat is short, energy consumption is low, environmental pollution is little and the features such as reduced investment, meets china natural resources, the energy
Current situation, becomes one of focus of iron and steel circle research both at home and abroad at present.Melting and reducing and direct-reduction technique do not use coke,
It is not required to build coke oven and chemical industry facility, sintering facility can not be built during using lump ore and part pellet, decrease more polluter,
For realizing steel plant's clean manufacturing, energy-conserving and environment-protective create condition.
Prior art one is corex (smelting iron the ultimate aim as it with coal) technology.The agent set of this technology is
Reduction shaft furnace and melting gasification furnace.By being added to lump ore and pelletizing in shaft furnace, using reducing gas, ore reduction is arrived
More than 90% metallized pellet, then feed them into melting gasification furnace and reduce further and melt, final production goes out qualified molten iron.
The shortcoming of this technology is cannot directly to utilize powder, needs first powder to be pressed into pelletizing recycling, or directly utilizes lump ore, this skill
Art is difficult to adjust in smelting process joins charcoal ratio it is impossible to accurately control the reduction effect of Ore in raw material.
Prior art two is finex (directly using fine ore and non-coking coal dust smelting molten iron) technology, is in corex technology base
The new technology growing up further on plinth, corex technology uses lump ore, pelletizing, and finex technology is all using fine ore.finex
Technical matters replace the reduction shaft furnace in corex technique with finmet (the hot wafering direct-reduction iron processes) technique of 4 grades of fluid beds,
Briquette iron by hot molding is become to add melting gasification furnace, specially fine ore and limestone with fluid bed reduction fine ore, briquetting, dolomite etc. melts
Agent is put into a series of fluidized-bed reactors together.Fine ore in a downward direction pass through four reactors, in this course by
Heating, and DRI is reduced into by the reducibility gas that coal gasification produces by reverse flow therewith.Anti- from last
The DRI answering device heat out is compressed into hot-pressed iron compact (hci:hot compacted iron), and hot-pressed iron compact is transported afterwards
To fusion and gasification furnace roof, put into melting gasification furnace, be melted.Last out molten iron and slag.
The shortcoming of prior art two is: fluid bed needs level Four to reduce, complex structure；Briquetting is needed before entering molten point of stove
Generate hot pressing ball and enter back into molten point stove.
Therefore, in order to be able to directly complete direct reduction reactor using powders such as breeze, coal dust, pulverized limestones in shaft furnace, and
Simplify multi-stage fluidized bed process, and the transporting velocity of breeze and residence time can be controlled it is ensured that the reduction effect of breeze, having must
A kind of molten point of new stove also original system is proposed.
Utility model content
The purpose of this utility model is to provide a kind of molten point of stove also original system of injecting oxygen so that this technique can be straight
Connect and complete direct reduction reactor using powders such as breeze, coal dust, pulverized limestones in shaft furnace, and simplify multi-stage fluidized bed process, protect
High-temperature-resistant structure in card reduction shaft furnace, and transporting velocity and the residence time of breeze can be controlled, to ensure the reduction of breeze
Effect.
This utility model provides a kind of molten point of stove also original system of injecting oxygen, and described system includes reduction shaft furnace, melts
Divide stove and oxygen rifle, wherein, described reduction shaft furnace includes breeze and flux feeding mouth, coal dust feeding mouth, feed opening, smoke inlet,
, located at the top of described reduction shaft furnace, described feed opening and flue gas enter for described breeze and flux feeding mouth and described coal dust feeding mouth
Mouth is located at the bottom of described reduction shaft furnace；It is provided with the baffle plate of adjustable inclination, described baffle plate sets in the burner hearth of described reduction shaft furnace
Under the described breeze and flux feeding mouth, on described feed opening and described smoke inlet；Described baffle plate and described reduction vertical
The inwall of stove leaves gap, and described baffle plate is disposed with aperture；Described baffle plate is propped up by the rotating shaft through described reduction shaft furnace furnace wall
Support on described reduction shaft furnace；A described molten point stove includes feeding mouth, exhanst gas outlet and discharging opening, and described feeding mouth connection is described also
The feed opening of former shaft furnace, described exhanst gas outlet connects the smoke inlet of described reduction shaft furnace；The lance head of described oxygen rifle is located at institute
State in molten point of stove, described oxygen rifle stretches in described molten point of stove from the furnace roof of described molten point of stove.
Above-mentioned system, is sequentially provided with multiple gears with described inclination angle from top to bottom in the burner hearth of described reduction shaft furnace
Plate, the vertical centrage of the relatively described reduction shaft furnace in inclination angle of adjacent described baffle plate is arranged symmetrically.
Above-mentioned system, described baffle plate is adjustable as 30 ° -60 ° with the angle of horizontal plane；Hole diameter on described baffle plate
For 10mm-30mm.
Above-mentioned system, described reduction shaft furnace can be block furnace, and described baffle plate is along the length on the incline direction at described inclination angle
Spend 0.5-0.95 times for the described reduction shaft furnace length of side, the rotary shaft of adjacent described baffle plate is in the vertical direction of described reduction shaft furnace
Distance be 0.2-1.5 times of the described reduction shaft furnace length of side.
Above-mentioned system, described baffle plate is provided with sealing device with the junction of described reduction shaft furnace；Described rotating shaft is provided with
Rotation driving bar.
Above-mentioned system, the exhanst gas outlet of described molten point of stove passes through the flue gas of reduction shaft furnace described in high-temperature flue gas pipeline communication
Import, described high-temperature flue gas pipeline is internally provided with water-cooled flue.
Above-mentioned system, the feed opening of described reduction shaft furnace is provided with radar level gauge or capacitance material level meter；Described reduction vertical
The breeze of stove and flux feeding mouth and described coal powder entrance are connected with speed governing batcher respectively.
Above-mentioned system, the structure of described oxygen rifle is telescopic water cooled lance, and the material of the lance head of described oxygen rifle is copper,
The sleeve internal layer of described oxygen rifle is blowing oxygen layer, and outermost is cooling circulating water layer；The oxygen inlet of described blowing oxygen layer
It is connected with oxygen channel.
The beneficial effects of the utility model are, it is possible to use the breeze of low price and the higher lump ore of coal dust fictitious hosts and
Pellet；This utility model can adjust coal dust by adjusting the friction speed of batcher, the ratio of breeze is adjusted；This utility model
Using pure oxygen burning, the high temperature of generation can meet difficult to low-grade ore etc. smelts the needs that ore deposit melts point；The high temperature cigarette of molten point of stove
Gas can supply direct reduction furnace to heat reduction breeze.
Additionally, this utility model regulating measure is relatively more, including delivery rate adjust, blanking speed adjust, amount of oxygen and
Coal dust amount is adjusted, unburned coal powder amount is adjusted etc., and the various parameters in multiple regulating measures and smelting process control and adjust mutually fits
Should be it is ensured that the reduction effect of breeze.
Brief description
Fig. 1 is the system structure sketch of this utility model embodiment；
Fig. 2 is the reduction shaft furnace interior panelling front view structural representation of this utility model embodiment；And
Fig. 3 is a of reduction shaft furnace interior panelling in Fig. 2 to structural representation.
Specific embodiment
Below in conjunction with drawings and Examples, specific embodiment of the present utility model is described in more details, with
Just the advantage that better understood when scheme of the present utility model and its various aspects.However, specific implementations described below
Mode and embodiment are only descriptive purposes, rather than to restriction of the present utility model.
Below in conjunction with accompanying drawing 1, embodiment of the present utility model is described in further detail.It is blown in the present embodiment
A molten point stove also original system for oxygen includes: 1, breeze hopper；2nd, speed governing batcher；3rd, reduction shaft furnace；4th, smoke evacuation system；5th, keep off
Plate；6th, high-temperature flue gas pipeline；7th, feed opening；8th, oxygen rifle；9 molten points of stoves；10th, tapping hole；11 coal dust hoppers；12 speed governing batchers；
13 oxygen channels.Wherein, breeze hopper 1, coal dust hopper 11, speed governing batcher 2 and 12 etc. can be arranged or more according to actual needs
It is changed to other devices.
Described reduction shaft furnace 3 includes breeze and flux feeding mouth, coal dust feeding mouth, feed opening 7, smoke inlet, described ore deposit
, located at the top of described reduction shaft furnace 3, described feed opening 7 and smoke inlet are located at described reduction shaft furnace 3 for powder and flux feeding mouth
Bottom；It is provided with the baffle plate 5 of adjustable inclination, described baffle plate 5 is located at described breeze and flux in the burner hearth of described reduction shaft furnace 3
Under feeding mouth and coal dust feeding mouth, on described feed opening and described smoke inlet；Described baffle plate 5 and described reduction shaft furnace 3
Inwall leave gap, described baffle plate 5 is disposed with aperture；Described baffle plate 5 is by the rotating shaft 51 through described reduction shaft furnace 3 furnace wall
It is supported on described reduction shaft furnace 3.The a of the front view in the reduction shaft furnace 3 of the concrete structure of baffle plate 5 such as Fig. 2 and Fig. 3 is to regarding
Figure.
The material of the baffle plate 5 in reduction shaft furnace 3 is generally heat-resistance stainless steel.
A described molten point stove 9 includes feeding mouth, exhanst gas outlet and discharging opening, and described feeding mouth connects described reduction shaft furnace 3
Feed opening 7, described exhanst gas outlet connects the smoke inlet of described reduction shaft furnace 3.
In described molten point of stove 9, described oxygen rifle 8 stretches into institute from the furnace roof of described molten point of stove 9 to the lance head of described oxygen rifle 8
State in molten point of stove 9.
It is sequentially provided with multiple baffle plates 5 with described inclination angle from top to bottom in the burner hearth of described reduction shaft furnace 3, adjacent described
The vertical centrage of the relatively described reduction shaft furnace 3 in the inclination angle of baffle plate 5 is arranged symmetrically.
This utility model instead of the higher lump ore of price and pellet using the breeze of low price and coal dust.
Breeze in breeze hopper 1 and flux can pass through speed governing batcher 2 according to a certain percentage and send into direct-reduction shaft furnace
3, speed governing batcher 2 may be designed as spiral speed regulation batcher, ensures direct-reduction shaft furnace 3 and breeze hopper 1 while feed
Between sealing.
Another hopper 11 is set simultaneously and deposits coal dust, sent into directly also using the coal dust of 12 0-1mm of speed governing batcher
Former shaft furnace 3.
Control the proportioning of coal dust, breeze by the friction speed arranging batcher.
The delivery rate of speed governing batcher 2 and 12 depends on the response speed of molten point of stove 9, and specific targets can be by molten point
Co in the flow of co also Primordial Qi of stove generation and outlet reducing gas2Content determine.Reducing gas flow is big, co2Content
Little, then increase feeding coal, conversely, reducing feeding coal.Generally, the co that direct-reduction shaft furnace 3 exit detects2Body
Between 15-25%, between 70%-80%, remaining gas are the trace gas such as nitrogen, hydrogen to the volume content of co to long-pending content
Body.
The baffle plate 5 of setting adjustable inclination in reduction shaft furnace 3, after breeze enters direct-reduction shaft furnace 3, along baffle plate 5 to
Lower flowing, the design principle of controllable register is the longest principle in material path, ensures again to the cigarette in direct-reduction shaft furnace 3 simultaneously
Atmidometer can not be too big.
According to above principle, the coefficient of friction according to baffle plate 5 and breeze simultaneously, for foursquare reduction shaft furnace, design
Baffle plate 5 is 0.5-0.95 times of the reduction shaft furnace length of side along the length on the incline direction at described inclination angle, preferably 0.75 times about.
Difference in height between the rotary shaft of adjacent screen is 0.2-1.5 times of the reduction shaft furnace length of side, preferably 0.5 times about.Baffle plate 5 with
The range of accommodation of the angle of horizontal plane is defined as 30 ° -60 °.The structure of instantiation and size are as shown in Fig. 2 and Fig. 3.In figure
Concrete structure and size are exemplary illustration.Certainly reduction shaft furnace can also be other shape such as circle.When reduction shaft furnace is other
Shape when, be also according to the longest principle in material path and consider can not be too big to the flue gas resistance in direct-reduction shaft furnace 3, come
The structure of design baffle plate and arrangement form.
When the angle of baffle plate 5 and horizontal plane is 36 °, the total distance of stream is 2.1 times about of reduction shaft furnace 3 height.
Due to the impact of frictional force and collision, material falls to becoming the reciprocal downglide motion of low speed by the movement of falling object, with whole process is
The situation (being not provided with baffle plate) of free-falling is compared, and breeze fall time is 5-12 times of free-fall time.Below specifically join
Number can make the appropriate adjustments according to the wind speed in reduction shaft furnace 3 and powder particle size scope.The material of baffle plate 5 is heat-resistance stainless steel.Gear
Plate is disposed with the aperture of diameter 10mm-30mm, and reducibility gas flow through aperture and reduction shaft furnace and gear by the lower section of reduction shaft furnace 3
Gap between plate 5 flows up, to ensure the contact that breeze is with reducibility gas.
Baffle plate 5 has the rotating shaft 51 that can make baffle plate activity and the sealing device and reduction shaft furnace 3 between.Can be in baffle plate 5
On set reinforcement 52 to ensure intensity and the rigidity of baffle plate 5.The rotation of baffle plate 5 can hand-turning also can machine drive, in baffle plate 5
On can be designed with rotation driving bar 53.
Reducibility gas reverse flow in breeze, coal dust and reduction shaft furnace 3, breeze is in the condition of high temperature reductive gas
Under be reduced into direct-reduction iron powder, coal dust is pyrolyzed under the high temperature conditions, and the carbon granule after pyrolysis passes through feed opening 7 and enters a molten point of stove
9, pyrolysis gas are discharged into next procedure with flue gas and process.Reduced iron powder enters molten point of stove 9 also by feed opening 7.Molten point of stove 9
High-temperature flue gas outlet enters direct-reduction shaft furnace 3, the internal setting water-cooled cigarette of high-temperature flue gas pipeline 6 after high-temperature flue gas pipeline 6
Road, controls flue gas to enter the temperature of direct-reduction shaft furnace 3 by controlling the water yield.Associated temperature according to the difference of Ore species and
Difference, general range is between 750 DEG C to 1100 DEG C.Through being reduced directly furnace rear, pass through and breeze heat exchange, temperature drops to
Between 520 DEG C to 750 DEG C.
The feed opening 7 of direct-reduction shaft furnace 3 passes through to arrange the facility such as radar level gauge or capacitance material level meter sensing blanking feelings
Condition, prevents feed opening 7 from blocking.If it find that feed opening 7 gathers materials too much, blanking is reduced by the delivery rate controlling top
Amount, prevents from blocking.
Oxygen rifle structure is telescopic water cooled lance, wherein, middle injecting oxygen, outermost is cooling circulating water, oxygen rifle 8
Head material is copper lance head.
, during falling to bottom from direct-reduction shaft furnace 3 top, progressively classification reduction, by adjusting breeze for breeze
The time of staying in direct-reduction shaft furnace 3, reduction shaft furnace exit breeze degree of metalization can reach to control its reduction degree
80% about.Remaining unreduced breeze carries out drastic reduction in molten point of stove 9.
Molten point of stove makes metal mining powder melt using the heat that oxygen in stove+carbon dust produces.Slag and flux shape in the reaction
Become foamed slag.The direct-reduction iron powder that foamed slag charge capture enters, in the foamed slag of oxygen rifle 8 immersion simultaneously, makes oxygen, carbon dust exist
Combustion reaction in foamed slag, for providing heat.
Oxygen rifle is passed through to control amount of oxygen to control carbon dust combustion rate in stove, and unburned carbon dust enters in foamed slag and part does not reduce
Breeze react further, so that breeze is finally thoroughly reduced.
Molten iron and slag are excluded from tapping hole 10, realize the outer slag sluicing system of stove through peripheral slag skimmer.Foamed slag leads to simultaneously
Cross and so that the heating-up temperature of oxygen rifle 8 is raised, finally realize scum in stove and separate.
This utility model adopts pure oxygen burning, and the high temperature of generation can meet to the low-grade needs waiting difficult smelting Ore.
The high-temperature flue gas of molten point of stove 9 can supply direct-reduction shaft furnace 3 to heat reduction breeze, thus realizing waste gas again
Using.
Regulating measure of the present utility model is relatively more, including delivery rate regulation, the regulation of blanking speed, amount of oxygen and coal dust
Amount is adjusted etc., and the various parameters that multiple regulating measures have adapted to smelting process control and adjustment is it is ensured that reduction effect.
Embodiment
Breeze hopper 1 put into by breeze and a small amount of flux pulverized limestone, is sent by the speed governing batcher 2 of breeze hopper 1 bottom
Enter to be reduced directly shaft furnace 3.Coal dust puts into coal dust hopper 11, and coal dust is sent into also by the speed governing batcher 12 of coal dust hopper 11 bottom
Former shaft furnace 3.The baffle plate 5 that inclination fallen by breeze and solvent and coal dust slides above and progressively.From molten point of stove 9 high temperature out
Co gas passes through high-temperature flue gas pipeline 6 and enters direct-reduction shaft furnace 3.High temperature co gas and breeze reaction, breeze generates directly also
Former iron powder, iron powder enters molten point of stove 9 through feed opening 7.Oxygen enters oxygen rifle 8 by oxygen channel 13, in stove and carbon granule
Burning provides heat, makes temperature rise to the temperature that reaction needs.After the completion of reaction, ore deposit liquid and slag pass through tapping hole 10 interval
Property discharge.The complete gas of perpendicular reaction in furnace is excluded by smoke discharging pipe 3, enters lower road treatment process.
Hereinafter it is specifically described step by step.
By particle diameter 0-1mm about Iron Ore Powder put into hopper according to the part by weight of 10:1 with addition of part pulverized limestone.Breeze
Composition be as follows:
Table 1
| Element | fe | sio2 | al2o3 | cao | mgo | s | p |
| Content % | 62.8 | 5.2 | 0.8 | 0.9 | 0.5 | 0.01 | 0.05 |
Direct-reduction shaft furnace is sent breeze into according to the speed of 2 ton hour by the speed governing batcher under hopper.
The coal dust of particle diameter 0-1mm is put into hopper.The composition of coal dust is as follows:
Table 2
| Composition, % | Fixed carbon | Fugitive constituent | Ash | s |
| Coal dust | 65～75 | 20～25 | 7～10 | 0.2～0.3 |
Direct-reduction shaft furnace is sent coal dust into according to the speed of 1 ton hour by the speed governing batcher under hopper.
Baffle plate 5 in regulation reduction shaft furnace 3 is so as to Angle ambiguity is between 40 ° -60 °.
In molten point of stove 9, high-temperature flue gas out pass through water-cooled flue by temperature control to 1350 DEG C, subsequently into straight
Connect reduction shaft furnace 3, and breeze mixing.Co reaction in breeze and flue gas is reduced into iron powder, enters molten point of stove 9 by feed opening 7,
DRI meal component is as follows:
Table 3
| Element | fe | sio2 | al2o3 | cao | mgo | s | p |
| Content % | 85 | 7.1 | 1.1 | 1.2 | 0.8 | 0.02 | 0.18 |
After pyrolysis, coal dust becomes coke powder, and composition is as follows:
Table 4
| Composition, % | mad | aad | vad | fcad |
| Carbon dust | 0.50 | 7.55 | 5.08 | 86.87 |
Wherein, the m in table 4adRepresent air-dried moisture；aadRepresentative is dried base ash；vadRepresent air-dried basis to wave
Send out and divide；fcadRepresent air-dried basis fixed carbon.
Pure oxygen sprays into molten point of stove 9 by oxygen rifle, and amount of oxygen is 900nm3/h.Partly unburned carbon dust is to not thorough reduction
Ferrum oxide is reduced further.
Control oxygen amount and coal amount it is ensured that the temperature in molten point of stove 9 is 1750 DEG C.
Open tapping hole in good time and tap a blast furnace according to reaction in furnace situation and slag tap.
Hot metal composition is as follows:
Table 5
| fe | c | si | mn | p | s | Molten iron temperature |
| 95.29 | 4.11 | 0.35 | 0.21 | 0.05 | 0.02 | ～1500 |
The composition of slag is as follows:
Table 6
| cao | sio2 | mgo | al2o3 | mno | feo | cao/sio2 |
| 43.44 | 37.78 | 8.2 | 9.3 | 0.54 | 0.43 | 1.15 |
As seen from the above-described embodiment, low-grade breeze effectively can be reduced to iron-holder relatively by the technical solution of the utility model
High molten iron.
It is last that it is noted that obvious, above-described embodiment is only intended to clearly illustrate this utility model example,
And the not restriction to embodiment.For those of ordinary skill in the field, also may be used on the basis of the above description
To make other changes in different forms.There is no need to be exhaustive to all of embodiment.And thus
The obvious change amplified out or change among still in protection domain of the present utility model.
Claims (8)
1. molten point of stove also original system of a kind of injecting oxygen, described system includes reduction shaft furnace, molten point of stove and oxygen rifle, wherein,
Described reduction shaft furnace includes breeze and flux feeding mouth, coal dust feeding mouth, feed opening, smoke inlet, described breeze and molten
, located at the top of described reduction shaft furnace, described feed opening and smoke inlet are gone back located at described for agent feeding mouth and described coal dust feeding mouth
The bottom of former shaft furnace；Be provided with the baffle plate of adjustable inclination in the burner hearth of described reduction shaft furnace, described baffle plate located at described breeze and
Under flux feeding mouth, on described feed opening and described smoke inlet；Described baffle plate is left with the inwall of described reduction shaft furnace
Gap, described baffle plate is disposed with aperture；Described baffle plate is by the rotating shaft support through described reduction shaft furnace furnace wall in described reduction
On shaft furnace；
A described molten point stove includes feeding mouth, exhanst gas outlet and discharging opening, and described feeding mouth connects the feed opening of described reduction shaft furnace,
Described exhanst gas outlet connects the smoke inlet of described reduction shaft furnace；
In described molten point of stove, described oxygen rifle stretches into described molten point of stove from the furnace roof of described molten point of stove to the lance head of described oxygen rifle
Interior.
2. system according to claim 1 is it is characterised in that be sequentially provided with from top to bottom in the burner hearth of described reduction shaft furnace
Multiple baffle plates with described inclination angle, the symmetrical cloth of vertical centrage of the relatively described reduction shaft furnace in inclination angle of adjacent described baffle plate
Put.
3. system according to claim 1 it is characterised in that the angle of described baffle plate and horizontal plane be adjustable as 30 °-
60°；Hole diameter on described baffle plate is 10mm-30mm.
4., it is characterised in that described reduction shaft furnace is block furnace, described baffle plate is along described for system according to claim 1
Length on the incline direction at inclination angle is 0.5-0.95 times of the described reduction shaft furnace length of side, and the rotary shaft of adjacent described baffle plate is in institute
The distance stating the vertical direction of reduction shaft furnace is 0.2-1.5 times of the described reduction shaft furnace length of side.
5. system according to claim 1 it is characterised in that the junction of described baffle plate and described reduction shaft furnace be provided with close
Seal apparatus；Described rotating shaft is provided with rotation driving bar.
6. system according to claim 1 is it is characterised in that the exhanst gas outlet of described molten point of stove passes through high-temperature flue gas pipeline
Connect the gas approach of described reduction shaft furnace, described high-temperature flue gas pipeline is internally provided with water-cooled flue.
7. system according to claim 1 it is characterised in that the feed opening of described reduction shaft furnace be provided with radar level gauge or
Capacitance material level meter；The breeze of described reduction shaft furnace and flux feeding mouth and described coal dust feeding mouth are connected with speed governing batcher respectively.
8. system according to claim 1 is it is characterised in that the structure of described oxygen rifle is telescopic water cooled lance, described
The material of the lance head of oxygen rifle is copper, and the sleeve internal layer of described oxygen rifle is blowing oxygen layer, and outermost is cooling circulating water layer；Institute
The oxygen inlet stating blowing oxygen layer is connected with oxygen channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620840779.2U CN205917292U (en) | 2016-08-05 | 2016-08-05 | Melting furnace reduction system of jetting oxygen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620840779.2U CN205917292U (en) | 2016-08-05 | 2016-08-05 | Melting furnace reduction system of jetting oxygen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086278A (en) * | 2016-08-05 | 2016-11-09 | 北京神雾环境能源科技集团股份有限公司 | A kind of molten point of stove reduction system and method for injecting oxygen |
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2016
- 2016-08-05 CN CN201620840779.2U patent/CN205917292U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086278A (en) * | 2016-08-05 | 2016-11-09 | 北京神雾环境能源科技集团股份有限公司 | A kind of molten point of stove reduction system and method for injecting oxygen |
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Denomination of utility model: Melt separation furnace reducing system for blowing oxygen and method Effective date of registration: 20180322 Granted publication date: 20170201 Pledgee: The Bank of Beijing Limited by Share Ltd. Anwar Road Branch Pledgor: Shenwu Technology Group Co.,Ltd. Registration number: 2018990000210 |
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