CN207581847U - The analoging detecting device that a kind of burden distribution system influences blast furnace melting with soft - Google Patents
The analoging detecting device that a kind of burden distribution system influences blast furnace melting with soft Download PDFInfo
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- CN207581847U CN207581847U CN201721621213.1U CN201721621213U CN207581847U CN 207581847 U CN207581847 U CN 207581847U CN 201721621213 U CN201721621213 U CN 201721621213U CN 207581847 U CN207581847 U CN 207581847U
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Abstract
The analoging detecting device that a kind of burden distribution system influences blast furnace melting with soft, device includes metal furnace body, fire resisting filler material, resistive heater, alundum tube, graphite crucible, sampling cabinet, underlying multiple spot pressure test device, on put multiple spot pressure test device, thermocouple, fire resisting filler material is equipped on metal inboard wall of furnace body, resistive heater is equipped on the inside of fire resisting filler material, diamond spar pipe is equipped in the inside of resistive heater, graphite crucible is equipped in alundum tube, it is respectively equipped with above and below graphite crucible and puts multiple spot pressure test device and underlying multiple spot pressure test device, sampling cabinet is arranged on the bottom of metal furnace body, thermocouple is arranged in metal furnaces body.The utility model smelts environment by advance analog blast furnace, in laboratory conditions, the gas fluid distrbution situation different according to different cohesive zones itself, under the conditions of different burden distribution systems, the cohesive zone shape and structure of furnace charge is judged, the accurate firsthand data is provided for practical blast fumance.
Description
Technical field
The utility model is related to field of metallurgy more particularly to suitable under the practical smelting condition in analog blast furnace inside, to not
Under the conditions of burden distribution system, the analoging detecting device of blast furnace melting with soft shape and structure.
Background technology
Charging system is the general name that furnace charge is packed into mode in stove.It decides the situation of distribution of the furnace charge in stove.Due to
Different furnace charges Gas Flow are distributed on stove top the difference of Gas Flow resistance, distribution situation of the furnace charge on cross section
Significant impact, and then Gas Flow producing level, soft heat belt shape and position are had an impact.
The reaction occurred in cohesive zone is mainly the softening of ore and the formation of first slag；Low-melting compound further heats
After start to soften, raw material liquid phase improves the contact conditions of ore and coke or flux.As temperature further increases, ore
Start to deform under the conditions of loading, shrink, soften, until melting drippage.Due to the poor air permeability of cohesive zone, restore and conducted heat
Journey is restricted, and therefore, in actual production wishes that cohesive zone is thinner, position is lower.
In addition, the formation of cohesive zone determines that blast furnace gas lower middle portion is distributed, thus it can think soft to a certain extent
Molten band determines the distribution of blast furnace temperature field in furnace, and shaped position produces blast furnace process apparent influence.Cohesive zone root
V-arrangement, W-shaped, inverted V-shaped and flat inverted V-shaped can be divided into according to gas fluid distrbution type.Wherein, inverted V-shaped cohesive zone is acknowledged as most
Good cohesive zone.It can improve permeability of stock column, reduce overall presure drop inside blast furnace, dredges Gas Flow promotion smooth operation of furnace.
Due to the not visible property inside blast furnace, the cross of furnace roof is based primarily upon for the judgement of blast furnace inside cohesive zone at present
The thermocouple measurements of temperature measuring equipment and cooling wall.Due to factors such as equipment, environment, measure tedious process, data error compared with
Greatly, there is certain hysteresis quality for the guidance of practical blast fumance.
Utility model content
The purpose of this utility model is to provide the analoging detecting device that a kind of burden distribution system influences blast furnace melting with soft, passes through
Advance analog blast furnace smelts environment, and in laboratory conditions, the gas fluid distrbution situation different according to different cohesive zones itself is right
Under the conditions of different burden distribution systems, furnace charge cohesive zone shape and structure inside blast furnace is judged, standard is provided for practical blast fumance
The true firsthand data.
To achieve the above object, the utility model is realized using following technical scheme：
The analoging detecting device that a kind of burden distribution system influences blast furnace melting with soft including metal furnace body, fire resisting filler material, adds
Hot water radiation wire, alundum tube, graphite crucible, sampling cabinet, underlying multiple spot pressure test device, on put multiple spot pressure test device, heat
Galvanic couple is equipped with fire resisting filler material on the metal inboard wall of furnace body, and resistive heater is equipped on the inside of fire resisting filler material, is being heated
The inside of resistance wire is equipped with diamond spar pipe, and graphite crucible is equipped in alundum tube, is respectively equipped with above and below graphite crucible
On put multiple spot pressure test device and underlying multiple spot pressure test device, installed in the centre bit of underlying multiple spot pressure test device
There is the low hole of molten drop, sampling cabinet is arranged on the bottom of metal furnace body, and thermocouple is arranged in metal furnaces body, in the upper of metal furnace body
End is equipped with exhaust channel, and intake channel is equipped in the lower end of metal furnace body.
Quartz glass observation panel is equipped on the sampling cabinet.
Further include coal gas reaction generating means, nitrogen cylinder, gas flow controller, the coal gas reaction generating means and nitrogen
Gas cylinder connects gas flow controller respectively, and gas flow controller connects intake channel by pipeline.
Compared with prior art, the beneficial effects of the utility model are：
The utility model analog blast furnace is practical to smelt environment, under the conditions of different burden distribution systems, the gas pressure of furnace charge charge level
Drop measures, and gas fluid distrbution situation is determined, and then judge the shape and structure of furnace charge cohesive zone, to instruct the practical smelting of blast furnace
Refining production.By the method for the utility model, traditional actual field detection mode is changed, by simulating in advance, you can sentence
Determine the quality of burden distribution system, shorten the hysteresis quality of top adjustment, substantially increase production efficiency, ensure that blast furnace operating is suitable
Row.
Description of the drawings
Fig. 1 is the process diagram for the analoging detecting device that the utility model burden distribution system influences blast furnace melting with soft；
Fig. 2 is the agent structure signal of the analoging detecting device that burden distribution system influences blast furnace melting with soft in the utility model
Figure；
Fig. 3 is the structure diagram of underlying multiple spot pressure test device；
Fig. 4 puts the structure diagram of multiple spot pressure test device on being；
Fig. 5 puts the sectional view of multiple spot pressure test device on being；
Fig. 6 is 1 gas fluid distrbution of embodiment simulation cohesive zone structural images.
In figure：1- exhaust channels；2- metal furnace bodies；3- fire resisting filler materials；4- resistive heaters；5- diamond spar pipes；6- is sampled
Case；7- quartz glass observation panels；8- inlet channels；The underlying multiple spot pressure test devices of 9-；10- graphite crucibles；Multiple spot is put on 11-
Pressure test device；12- thermocouples；13- pressure sensors；The 14- pedestals of resistance to material；15- conducting wires；16- samples；17- switch boards；
18- gas flow controllers；19- coal gas reacts generating means；20- nitrogen cylinders；21- air blowers；22- molten drop dripping hole.
Specific embodiment
The utility model is described in detail below in conjunction with the accompanying drawings, it should be noted that the implementation of the utility model is not
It is limited to following embodiment.
As Figure 1-Figure 5, the analog detecting method that a kind of burden distribution system influences blast furnace melting with soft, specific method is such as
Under：
1) using high temperature CO gas and N2Gas is according to 7:3 flow-rate ratio is made into reducing gas, and reducing gas is passed through mould
Intend in detection device；
2) multiple spot pressure test device is set respectively above and below the graphite crucible for placing furnace charge, in multiple spot pressure difference
Radially and multiple pressure sensors 13 are evenly arranged in detection device, are passed through the multiple spot pressure differential detection set above and below and are filled
The multimetering that pressure drop up and down is carried out to the furnace charge under the conditions of different burden distribution systems is put, and then judges the shape knot of furnace charge cohesive zone
Structure；
3) sampling cabinet 6 in the bottom of analoging detecting device is set, quartz glass observation panel 7 is provided on sampling cabinet 6, passes through stone
English glass viewing port 7 observes the droplet dew situation of furnace charge.When furnace charge drippage product drips, observer can pass through quartz
Glass viewing port sees that apparent flame flashes.
The analoging detecting device that a kind of burden distribution system influences blast furnace melting with soft, including metal furnace body 2, fire resisting filler material 3,
Resistive heater 4, alundum tube 5, graphite crucible 10, sampling cabinet 6, underlying multiple spot pressure test device 9, on put multiple spot pressure differential detection
Device 11, thermocouple 12 are equipped with fire resisting filler material 3 on 2 inner wall of metal furnace body, are equipped with and add in 3 inside of fire resisting filler material
Hot water radiation wire 4 is equipped with diamond spar pipe 5 in the inside of resistive heater 4, graphite crucible 10 is equipped in alundum tube 5, in graphite crucible
It is respectively equipped with above and below in the of 10 and puts multiple spot pressure test device 11 and underlying multiple spot pressure test device 9, underlying more
The center of point pressure test device 9 is equipped with molten drop dripping hole 22, and sampling cabinet 6 is arranged on the bottom of metal furnace body 2, thermocouple
12 are arranged in metal furnace body 2, and exhaust channel 1 is equipped in the upper end of metal furnace body 2, and air inlet is equipped in the lower end of metal furnace body 2
Access 8.
Graphite crucible 10 is for containing blast furnace burden sample 16, and the bottom of graphite crucible 10 is taper, and furnace charge melts after melting
It drips and is dripped, then the molten drop dripping hole from underlying 9 center of multiple spot pressure test device from the bellmouth of 10 bottom of graphite crucible
22 drop onto in sampling cabinet 6.In order to reduce error, the reproducibility of detection is improved, 10 size of graphite crucible is sufficiently large, embodiment
The middle graphite crucible using φ 200mm × 400mm.
Be arranged on above and below graphite crucible 10 on put multiple spot pressure test device 11 and underlying multiple spot pressure differential detection
Device 9 for measuring the pressure drop situation of furnace charge charge level different location, and then draws the cohesive zone shape and structure of furnace charge.
On to put multiple spot pressure test device 11 and underlying multiple spot pressure test device 9 be 14 (φ of the round pedestal of resistance to material
200mm), multiple pressure sensors 13 are radially uniformly placed in top, and pressure sensor 13 is counted by conducting wire 15 and control
Calculation machine connects.
Quartz glass observation panel 7 is equipped on the sampling cabinet 6.For observing furnace charge after high temperature reduction, reduzate
Drippage situation.
Coal gas reaction generating means 19, nitrogen cylinder 20, gas flow controller 18 are further included, the coal gas reaction fills
Put 19 and nitrogen cylinder 20 connect gas flow controller 18 respectively, gas flow controller 18 passes through pipeline and connects intake channel 8.
Coal gas reaction generating means 19, nitrogen cylinder 20 and gas flow controller 18 are for the also Primordial Qi inside analog blast furnace production
Atmosphere.
The whole process such as temperature, pressure sensor involved in the utility model method is by computer real-time monitoring and carries out data
Acquisition calculate and record；Heat temperature raising controls and charge level pressure drop situation image is completed under the coordination of computer.
Embodiment 1：
1) start coal gas reaction generating means 19, set CO gases target temperature as 900 DEG C, coal gas reacts generating means 19
Heating schedule started to warm up according to the temperature increasing schedule (0-900 DEG C, 5 DEG C/min) of setting.
2) according to burden distribution system, in proportion (sintering：Pelletizing：Lump ore=7:2:1) iron-bearing material and coke are weighed respectively,
It is packed into graphite crucible 10 after mixing.
3) graphite crucible 10 is put into furnace body, places and put (underlying) multiple spot pressure test device (11,9) and close
Furnace body；Gas passage is assembled, after airtight test is good, starts to be passed through high temperature CO gas and N into stove2Mixed gas；
It is started to warm up in stove, heating schedule is according to (0-900 DEG C, 5 DEG C/min of preset temperature increasing schedule；After constant temperature 30min, 900
DEG C -1500 DEG C, 5 DEG C/min) it is heated, while the registration of pressure sensor 13 is returned to zero.
4) pressure drop that (underlying) multiple spot pressure test device (11,9) measures air pressure above and below furnace charge in real time is put on, and in implementation
Material transfer face pressure drop data.
5) computer draws the supplied materials face pressure difference image of furnace charge according to charge level pressure drop data.
Through judgement, which belongs to reverse V-shaped distribution.Gas fluid distrbution simulation cohesive zone structural images are shown in Fig. 5.
6) it by the charge level pressure drop data of acquisition, (when furnace charge drippage product drips, is seen with reference to furnace charge drippage situation
The personnel of examining can see that apparent flame is flashed by quartz glass observation panel) and temperature data, sentenced using molten drop characteristic value formula
Whether the meltdrop characteristic index for determining charge level is good, and molten drop characteristic value formula is as follows：
Wherein S values are molten drop total characteristic value；TsIt skyrockets temperature for pressure difference；TdTemperature is dripped for furnace charge；△PmIt is pressed for maximum
Difference；△PsPressure difference during to start drippage.
The embodiment of the utility model, the ordinary skill people of this field has been shown and described in the utility model as possible
Member to these embodiments in the case of the principle and objective for not departing from the utility model it is appreciated that can carry out a variety of changes
Change, modification, replace and deformation, the range of the utility model has the right requirement and its equivalent limits.
Claims (3)
1. the analoging detecting device that a kind of burden distribution system influences blast furnace melting with soft, which is characterized in that including metal furnace body, fire resisting
Filler material, resistive heater, alundum tube, graphite crucible, sampling cabinet, underlying multiple spot pressure test device, on put multiple spot pressure difference inspection
Device, thermocouple are surveyed, fire resisting filler material is equipped on the metal inboard wall of furnace body, adding thermal resistance is equipped on the inside of fire resisting filler material
Silk is equipped with diamond spar pipe in the inside of resistive heater, graphite crucible is equipped in alundum tube, above and below graphite crucible
It is respectively equipped with and puts multiple spot pressure test device and underlying multiple spot pressure test device, in underlying multiple spot pressure test device
Heart position is equipped with molten drop dripping hole, and sampling cabinet is arranged on the bottom of metal furnace body, and thermocouple is arranged in metal furnaces body, in metal
The upper end of furnace body is equipped with exhaust channel, and intake channel is equipped in the lower end of metal furnace body.
2. the analoging detecting device that a kind of burden distribution system according to claim 1 influences blast furnace melting with soft, feature exist
In equipped with quartz glass observation panel on the sampling cabinet.
3. the analoging detecting device that a kind of burden distribution system according to claim 1 influences blast furnace melting with soft, feature exist
In further including coal gas reaction generating means, nitrogen cylinder, gas flow controller, coal gas reaction generating means and nitrogen cylinder
Gas flow controller is connected respectively, and gas flow controller connects intake channel by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721621213.1U CN207581847U (en) | 2017-11-29 | 2017-11-29 | The analoging detecting device that a kind of burden distribution system influences blast furnace melting with soft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721621213.1U CN207581847U (en) | 2017-11-29 | 2017-11-29 | The analoging detecting device that a kind of burden distribution system influences blast furnace melting with soft |
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| CN207581847U true CN207581847U (en) | 2018-07-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111426800A (en) * | 2020-04-30 | 2020-07-17 | 鞍钢股份有限公司 | Method for evaluating uniformity of mixed materials |
| CN111575421A (en) * | 2020-03-27 | 2020-08-25 | 武汉钢铁有限公司 | Method for adjusting shape of soft melt belt by scanning radar |
-
2017
- 2017-11-29 CN CN201721621213.1U patent/CN207581847U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111575421A (en) * | 2020-03-27 | 2020-08-25 | 武汉钢铁有限公司 | Method for adjusting shape of soft melt belt by scanning radar |
| CN111575421B (en) * | 2020-03-27 | 2022-02-08 | 武汉钢铁有限公司 | Method for adjusting shape of soft melt belt by scanning radar |
| CN111426800A (en) * | 2020-04-30 | 2020-07-17 | 鞍钢股份有限公司 | Method for evaluating uniformity of mixed materials |
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