CN208187094U - Novel cokeless furnace cupola - Google Patents
Novel cokeless furnace cupola Download PDFInfo
- Publication number
- CN208187094U CN208187094U CN201820555843.1U CN201820555843U CN208187094U CN 208187094 U CN208187094 U CN 208187094U CN 201820555843 U CN201820555843 U CN 201820555843U CN 208187094 U CN208187094 U CN 208187094U
- Authority
- CN
- China
- Prior art keywords
- furnace
- carbon ball
- burner
- novel
- cokeless
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 94
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 88
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 238000010079 rubber tapping Methods 0.000 claims abstract description 25
- 239000000945 filler Substances 0.000 claims abstract description 8
- 230000004927 fusion Effects 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 126
- 229910052742 iron Inorganic materials 0.000 claims description 63
- 239000007789 gas Substances 0.000 claims description 24
- 230000002550 fecal effect Effects 0.000 claims description 16
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 24
- 229910000831 Steel Inorganic materials 0.000 abstract description 13
- 239000010959 steel Substances 0.000 abstract description 13
- 238000003723 Smelting Methods 0.000 abstract description 4
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 3
- 239000000498 cooling water Substances 0.000 abstract description 3
- 238000006467 substitution reaction Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 40
- 238000002844 melting Methods 0.000 description 16
- 230000008018 melting Effects 0.000 description 16
- 239000000919 ceramic Substances 0.000 description 10
- 239000000571 coke Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 230000007115 recruitment Effects 0.000 description 10
- 239000002184 metal Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000002699 waste material Substances 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910001047 Hard ferrite Inorganic materials 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 239000013589 supplement Substances 0.000 description 4
- 229910000805 Pig iron Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000006052 feed supplement Substances 0.000 description 2
- 238000007499 fusion processing Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 241000143432 Daldinia concentrica Species 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 208000010877 cognitive disease Diseases 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- 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
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The utility model relates to the smelting equipment technical fields of cast iron, more particularly to novel cokeless furnace cupola, including furnace body and heating source, the cavity structure of furnace interior generally up and down, feed opening and at least one tapping hole are provided on furnace body, feed opening is connected to tapping hole by the cavity structure, wherein, the crucible zone and fusion zone of cavity structure are all provided with the filler section for being set to the high carbon ball for accommodating support furnace charge, heating source is neat gas burner, the burner of neat gas burner is set on furnace body, and is located at the filler section of high carbon ball.The utility model is using high carbon ball substitution water cooled grating and flame-proof sphere bed as support stock column, the thermal loss for avoiding water cooled grating that from may taking away to cooling water in equipment bring security risk and water cooled grating steel pipe.
Description
Technical field
The utility model relates to the smelting equipment technical fields of cast iron, more particularly, to a kind of novel cokeless furnace cupola.
Background technique
Since the eighties in last century, Britain, German Utility Model is a kind of uses natural gas-oxygen burner as supplied heat source
Cokeless furnace cupola, with the clean energy resource of rich reserves --- substitute gas coke obtains good effects of energy saving and emission reduction, with
Traditional coke furnace cupola is compared, and same amount of casting iron liquid is melted, and natural gas cokeless furnace cupola can reduce CO2Discharge
70% or more, reduce SO290% or more discharge.Meanwhile cokeless furnace cupola device structure, especially mating environmental protection equipment are relatively simple
Single, investment is smaller, and can be transformed on the basis of original cupola equipment, without building new furnace, therefore is easy to
Vast foundry enterprise, especially annual output are promoted in 1~100,000 tons of medium and small Foundry Works below.
However, cokeless furnace cupola used at present there is problems:
1. due to being supported without coke as the stock column in furnace, so increasing water cooling furnace above natural gas combustion nozzle
Grid, to carry furnace charge stock column.The water cooled grating is to be mounted on one being drained through water and force cooling steel pipe above thermal-flame, these
The steel pipe operating condition of high-temperature region is also more severe than water cooled furnace wall and water cooled tuyere, this not only increases the security risk of equipment,
The temperature loss for passing through the iron liquid drop of water cooled grating is also increased, the heat that cooling water is taken away in water cooled grating steel pipe is also added
Amount loss.Also, it is supported since water cooled grating must be relied on as stock column, limits the volume of such furnace cupola, so that
The large-scale cokeless furnace cupola of 30t/h or more can not be prepared.
2. furnace cupola during normal melt cast iron, needs to spread one layer of Ceramic Balls on water cooled grating, ceramic layers of balls
Thickness is generally required at 400~700mm (diameter of Ceramic Balls about 180~200mm), as " siege " of iron liquid overheat, due to
Ceramic Balls during cupola melting otherwise breakdown consume, it is therefore desirable to which continuous blow-on supplements Ceramic Balls in the whole process
(by taking German 15t/h cokeless furnace cupola as an example, take around and mend increasing water cooled grating porcelain ball with every batch of furnace charge).Since Ceramic Balls are in furnace
It inside only serves support and raises the effect of siege, furthermore without any beneficial effect, can only be consumption energy, finally also all become
For clinker；In addition the price of Ceramic Balls is the several times of coke price, therefore the Ceramic Balls consumed daily also improve blow-on
Cost.
3. the tapping temperature of cokeless furnace cupola is relatively low (general only 1400 DEG C or so) due to the above reasons, therefore needs
It configures that a power is biggish to have core line frequency furnace as forehearth, additional heating and heat insulation function, Cai Nengrong is provided
Dissolve 1500 DEG C of high temperature qualification iron liquid.
4. the biggish furnace charge of steel scrap amount is added in this cokeless furnace cupola furnace, it is also necessary to be added in forehearth to iron liquid
Carburant carries out iron liquid recarburization practice.
It is increasingly strict to casting industry coke furnace cupola restrictive condition at present, subtract to adapt to the energy conservation that China continues to increase
The dynamics of row, and at present natural gas extraction quantity constantly increases, price increasingly steadily and the condition for the drop that becomes, foundry industry at home
Cokeless furnace cupola is promoted to have brought into schedule.And developing one kind can overcome the cokeless furnace cupola of drawbacks described above to have become in the industry
Problem urgently to be resolved.Therefore need to develop the advantages of one kind can either retain above-mentioned cokeless furnace cupola, and before being avoided that it
The novel cokeless furnace cupola of listed disadvantage is stated, to adapt to the development of Green foundry industry.
Utility model content
One aspect according to the present utility model provides a kind of novel cokeless furnace cupola, to solve the above technical problems
At least one.
The utility model provides a kind of novel cokeless furnace cupola, including furnace body and heating source, furnace interior generally on
The cavity structure of lower perforation, feed opening and at least one tapping hole are provided on furnace body, and feed opening and tapping hole pass through cavity knot
Structure connection, wherein
The crucible zone and fusion zone of cavity structure are all provided with the filler section for being set to the high carbon ball for accommodating support furnace charge,
Heating source is neat gas burner, and the burner of neat gas burner is set on furnace body, and is located at the filling of high carbon ball
Section.
Device furnace interior provided by the utility model is cavity structure, up and down, the cupola well of cavity structure as a result,
Area and fusion zone are respectively provided with the filler section of high carbon ball, breach and are usually arranged at the cupola well of cokeless furnace cupola in the prior art
The technical barrier and cognitive disorder of efficiency of combustion are improved for hollow structure；
Secondly, filling high carbon ball replaces support of the water cooled grating as furnace charge, heat effect, Er Qieyou not only were played to iron liquid
In water cooled grating (water cooled grating is installation one being drained through water and force cooling steel pipe in the high temperature environment) is omitted, therefore avoid
Security risk brought by steel pipe work condition abnormality, eliminates existing apparatus security risk present in production run, and
The limitation to cokeless furnace cupola volume is also relieved, makes it possible to prepare the cokeless furnace cupola of different melting rates according to demand, it is special
It is not the large-scale cokeless furnace cupola for prepare 30t/h or more；
Furthermore using neat gas burner as heating source, not only heat source temperature is high but also more energy efficient, and natural gas fires
The burner of burner provides vapor and carbon dioxide high-temperature gas into furnace, avoids due to containing oxygen in high-temperature gas
Oxidation reaction occurs with high carbon ball, reduces the loss of high carbon ball；Further, since natural gas-oxygen high temperature burner directly provides
Heat needed for cupola melting, hole as coke is not present in high carbon ball such as carbon ball, barren rock electrode ink stripping and slicing in addition,
Reactivity is low, and depletion rate is slow, and the highly stable of stock column is supported to be not easy to fluctuate, therefore asks without scrupling " wind coke balance " again
Topic, will not occur the Common Accidents of the furnace cupolas such as " bed coke height reduction ", " being born ", " black slag, hair wastes ", iron liquid oxidation again,
So the working of a furnace is more stable, the normal production order and casting quality ensure that；Since iron liquid will not both aoxidize in furnace cupola,
It is seldom to increase sulphur, therefore the degree of purity of iron liquid is relatively high, the spheroidal graphite cast-iron original iron melt of suitable for producing high quality.
In some embodiments, the high carbon ball of filling is carbon ball and/or graphite electrode stripping and slicing.As a result, when high carbon ball
When for carbon ball, due to carbon ball dense non-porous and surface is covered with iron liquid, low with furnace high-temperature gas reaction, can be significantly
Reduce carbon ball burn out rate and reduce waste residue amount, also have carburetion so that process optimization, operation it is easier.Due to high-carbon
The height of top dome face to burner will affect the temperature and melting rate of iron liquid, thus in concrete practice, preferably by high-carbon top dome face
The distance between burner is set as 400~700mm, and the height in high-carbon top dome face to burner is higher, and bonded hard ferrite magnet out is high,
But melting rate will be declined；Conversely, height is lower, melting rate is promoted, but the bonded hard ferrite magnet come out is lower；This value model
In enclosing, in conjunction with a large amount of practices and summarizes, ensure that the optimum balance of melting rate and bonded hard ferrite magnet.
In some embodiments, the high-carbon bulb diameter of filling need to be set according to furnace body demand, and size is applicable in, generally
In the case of can be set to 150~300mm.Thereby, it is possible to make high carbon ball size guarantee consistency, and in it is larger when, ensure that
Good gas permeability and the thermal efficiency；But excessive, burning is impermeable, and the thermal efficiency is low, therefore by a large amount of practices and summarizes, the utility model
The preferred high-carbon bulb diameter of embodiment is 150~300mm, to achieve the effect that good permeability in cupola well, the thermal efficiency are high.
In some embodiments, furnace charge is placed directly in high carbon ball, and furnace charge is metal charge, including the pig iron, foundry returns
And steel scrap etc..As a result, it is load melting be iron liquid when, during iron liquid drop is fallen along high-carbon globule, high carbon ball also plays overheat
Effect, greatly promotes the temperature that iron liquid goes out liquid, so that the more energy efficient material-saving of the device.
In some embodiments, heat source temperature provided by neat gas burner burner is 1700 DEG C -2000 DEG C.By
This, burner sprays into high temperature gas flow into furnace, ensure that high temperature requirement required in furnace, also, along high-carbon when load melting after
When gap between ball is flowed to tapping hole, air-flow and high carbon ball played heat effect to iron liquid, so that the iron liquid finally flowed out
Temperature can achieve 1500 DEG C or more, it might even be possible to before no longer keeping the temperature heating use as iron liquid configured with core line frequency furnace
Furnace.
In some embodiments, heating source is around furnace body at least provided with a row, and a row is uniformly placed at least two, preferably
For 4~12 heating sources；When being equipped with two rows of heating sources, can be arranged in a manner of just setting, being inverted or waiting and set between every row.As a result,
Heating source is set on furnace body using annular arrangement mode, convenient for being heated to input high temperature gas flow comprehensive in furnace to furnace body,
And when the two rows of and above heating source is arranged in furnace interior, smelting efficiency can be improved.
Specifically, it when two rows of heating sources are arranged on furnace body, is just setting and is referring to that the maximum row burner of general power is placed in down
It arranges and the maximum exhaust heat source of general power accounts for the 70%~90% of whole heat source general powers, wait the general power set and refer to each row's burner
Equal, inversion refers to that the maximum row burner of general power is placed in row and the maximum exhaust heat source of general power accounts for whole heat source total works
The 70%~90% of rate；Wherein, burner is arranged on when just setting apart from 200~400mm of top surface, when inversion on row's burner apart from top surface
400~700mm is waited and is arranged burner on when setting apart from 400~600mm of top surface.
It in some embodiments, further include at least one fecal iron separator and at least one gap bridge, each tapping hole is equal
It is connected respectively via passing a bridge with a fecal iron separator.The iron liquid and waste residue that melting finishes as a result, flow out furnace body by tapping hole
Afterwards, fecal iron separator being flowed directly by gap bridge, iron liquid continuously outflows, while fecal iron separator also constantly filters waste residue, so that
The iron liquid finally flowed out is pure, without slag, realizes continuity tapping.Also, when there are two the tapping holes and fecal iron separator of setting
Or more when, can be convenient maintenance, replacement refractory material, realize long-term continuous production.
In some embodiments, neat gas burner is with natural gas-oxygen burner high-temperature burner.As a result,
Using natural gas-oxygen burner, vapor and carbon dioxide high-temperature gas are provided to guarantee burner into furnace, and without reduction
Property gas, reduces the loss of high carbon ball；Moreover, using natural gas-oxygen burner high-temperature burner, to ensure to mention into furnace
For higher temperature.
In some embodiments, further include measuring system for judging high carbon ball height change, wherein the measurement
The mathematics computing model that the relationship gone out between iron, material proportion and high carbon ball height change according to system is established, or peace
Loaded on the intracorporal load melting position measurement instrument of furnace, wherein measuring system can carry out Modeling Calculation or direct according to the prior art
Purchase uses.Thus, it is possible to monitor the residual altitude of high carbon ball in real time by measuring system, calculated by calculating with material analyzing
The scaling loss amount of high carbon ball out, convenient for controlling and understanding the magnitude of recruitment and alternate frequency of high carbon ball, to realize the steady of the furnace cupola working of a furnace
Fixed operation and automation, intelligentized control method.
The novel cokeless furnace cupola of the requires of the utility model protection is due to eliminating existing cokeless furnace cupola combustor nozzle
The water cooled grating and flame-proof sphere bed of top, and instead high carbon ball is carried as support stock column into furnace metal charge, is avoided
Water cooled grating may give equipment bring security risk, also avoid temperature loss and the water of the iron liquid drop for passing through water cooled grating
The thermal loss that cooling water is taken away in black furnace grid steel pipe.Meanwhile flame-proof sphere bed is replaced with high carbon ball, it is molten to not only reduce furnace cupola
Clinker during change, and be added in furnace and can also drip carburetting for the iron liquid melted in furnace, therefore steel scrap and low-quality can be increased
The dosage for measuring furnace charge, to reduce iron liquid cost.The design of such structure not only reduces cost, reduces waste residue, but also can be with
Melt out the higher molten iron of quality.
Wherein, using the method for novel cokeless furnace cupola molten iron provided by the utility model, steps are as follows:
S1. high carbon ball is loaded into furnace body according to preset height threshold, wherein height threshold is the high carbon ball of accumulation
Top surface is at a distance from burner；
S2. it is lighted a fire using neat gas burner burner, preheating 1-2h is carried out to furnace interior；
S3. when in-furnace temperature is at least above 150 DEG C of fusing point of metal charge, metal charge is packed into furnace；
S4. molten iron, continuous tapping water.
Method disclosed in the utility model using above-mentioned novel cokeless furnace cupola molten iron, in operating procedure, control skill
It is greatly simplified in terms of art, firstly, not combustion of coke, then the lime stone flux being added to reduce the fusing point of coke ash is with regard to big
Reduce greatly, therefore the quantity of clinker also significantly reduces, can be further energy saving, and reduce the discharge of solid waste；Secondly,
Because using high carbon ball when iron liquid flows through high carbon ball, iron liquid carburetting can be made, eliminate and add carburant to iron liquid, so that work
Skill optimization, operation are easier；Again, it due to cancelling water cooled grating and Ceramic Balls siege, eliminates the inspection of grate steel pipe and repairs
It is multiple, optimize and also significantly improves the safety of blow-on operation while simplifying operation.
Wherein, further include feed supplement step, feed supplement step concrete operations are as follows:
It is precalculated according to the consumption rate of material proportion and high carbon ball and obtains furnace charge filling batch and time and high carbon ball
Alternate frequency and magnitude of recruitment；
The high-carbon of corresponding magnitude of recruitment is added into furnace body when supplementing furnace charge according to high carbon ball alternate frequency and magnitude of recruitment
Ball.Method disclosed in the utility model breaches the skill that can not quantitatively calculate Ceramic Balls consumption in the prior art as a result,
Art defect, using the smelting technology of the present apparatus, can waste, the proportion of goods damageds and additive amount to high carbon ball, addition frequency carry out
It calculates and controls, realize that automation, intelligence provide condition for furnace cupola, so that operating procedure and control technology are all significantly simple
Change, greatly improves production efficiency.
Preset height threshold is 600~900mm.Empty 1-2h can be burnt in furnace body warm, thus, it is contemplated that arriving high carbon ball
Loss, the top surface of high carbon ball and burner distance are maintained at 400~700mm when entering furnace in order to ensure metal charge, are initially filling out
When filling high carbon ball, it can be set a height threshold (being obtained by calculation or take empirical data) according to the Expenditure Levels of high carbon ball,
And the filling of high carbon ball is carried out according to the height threshold, so that when metal charge is added and in fusion process, high carbon ball
Top surface and burner distance remain at 400~700mm.
Detailed description of the invention
Fig. 1 is a kind of the schematic diagram of the section structure of the novel cokeless furnace cupola of embodiment of the utility model；
Fig. 2 is that (part-structure is not for a kind of the schematic diagram of the section structure of use state of novel cokeless furnace cupola shown in FIG. 1
It shows)；
Fig. 3 is the schematic diagram of the section structure of another use state of novel cokeless furnace cupola shown in FIG. 1.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
Fig. 1-Fig. 2 schematically shows a kind of specific reality for the novel cokeless furnace cupola implemented according to the utility model
Mode is applied, as shown, in the present embodiment, which includes furnace body 1, heating source 2, the feed opening 6 for being placed in furnace body top, sets
In the tapping hole 7 of furnace body bottom end, fecal iron separator 3 and pass a bridge 4,
Wherein, furnace body 1 is vertically arranged, when off working state, generally cavity structure inside furnace body 1, up and down, cavity
The crucible zone and fusion zone of structure are all provided with the filler section 11 for being set to the high carbon ball 5 for accommodating support furnace charge 8；
When working condition, the under-filled section 11 of furnace body 1 is filled with the height directly contacted with furnace charge 8, as support furnace charge 8
Carbon ball 5；
Heating source 2 be with natural gas-oxygen burner high-temperature burner, if there are four, be symmetrically distributed in below furnace body,
It is connected to by burner 21 with the filler section 11 of 1 lower section of furnace body,
Burner 21 is equipped with four accordingly, is symmetrically distributed in 1 lower section of furnace body and is placed with the filler section 11 of high carbon ball 5
It is connected, and tilts down and be directed toward 1 center of furnace body, each 21 power of burner is 2.7MW, and burner 21 is provided into furnace body
Be 1900 DEG C of high temperature H2O (vapor) and CO2, the bonded hard ferrite magnet finally flowed out is made to can achieve 1450 DEG C or more；
Tapping hole 7, fecal iron separator 3 and gap bridge 4 are respectively provided with one, and tapping hole 7 is via 4 and 3 phase of fecal iron separator of passing a bridge
After connection, iron liquid and waste residue flow out furnace body by tapping hole, fecal iron separator is flowed to through passing a bridge, fecal iron separator filters waste residue, and
Iron liquid is then continuously flowed out by fecal iron separator.Wherein, the melting rate of the cokeless furnace cupola provided in the embodiment can achieve
15t/h。
In this embodiment, high carbon ball is carbon ball, and carbon bulb diameter is 150~200mm, between carbon ball and carbon ball
Gap is formed, is on the one hand circulated convenient for high-temperature gas, is on the one hand dripped downwards convenient for iron liquid drop along carbon ball, is on the other hand
Iron liquid carburetting in drip process；Carbon ball is whole to form stock column support again, and furnace charge is maintained to be in the top of heating source 2.
In concrete practice, the furnace charge being added in furnace is metal charge, including the pig iron, foundry returns and steel scrap；When furnace charge is
When the pig iron, the magnitude of recruitment of carbon ball can be reduced suitably in fusion process；And when furnace charge is steel scrap, to the magnitude of recruitment of carbon ball
Can suitably it increase.
The top surface 12 of high carbon ball is higher by burner 21 apart from not less than 600mm in this embodiment.
In the present embodiment, further include measuring system (not shown) for detecting high carbon ball height change, wherein
Measuring system is the mathematics computing model established according to the relationship between melting rate, tapping temperature and high carbon ball height change
(the furnace cupola expert model that the model can refer to the prior art is realized), can judge nothing by tapping temperature and melting rate
The height variation of carbon ball support stock column in burnt furnace cupola furnace；By monitoring the scaling loss amount of high carbon ball, convenient for controlling to high carbon ball
Supplement speed and magnitude of recruitment, to realize the stable operation and automation, intelligentized control method of the furnace cupola working of a furnace.
Equipment in the present embodiment, which melts bonded hard ferrite magnet out, can be increased to 1500 DEG C, all due to iron liquid sulfur-bearing, the oxygen amount
It is lower, can directly stokehold connect iron liquid carry out spheroidising, the main melting iron liquid trade mark be QT400-18, QT500-7,
HT200, HT250 etc., radix is 7000 hours (four groups working in three shifts) when year, melts 100,000 tons of iron liquid in year.
In concrete practice, using the method for cokeless furnace cupola molten iron provided by the utility model, steps are as follows:
S1: multiple carbon balls are loaded into furnace body, carbon ball is directly contacted with furnace charge and the carrying stock column as furnace charge, carbon
The apical side height of plain ball exceeds 600~900mm of neat gas burner burner；
S2: blow-on is lighted a fire using natural gas-oxygen burner of neat gas burner, and makes burner temperature by being passed through oxygen
Degree is maintained at 1700 DEG C -2000 DEG C, duration 1-2h is kept, at this point, burner sprays into high temperature H into furnace2O (vapor) and CO2, high
Wet body flows up on one side preheats furnace interior, heats on one side to carbon ball；
S3: when in-furnace temperature is at least above 150 DEG C of fusing point of metal charge, putting into furnace charge into furnace via feed opening,
Keep furnace charge top surface in feed opening lower edge during entire blow-on；
S4: with furnace vivo environment temperature rise and high-temperature gas flow up to furnace charge heating melt it gradually under
It falls, continuous tapping water, during the falling process, the gap between carbon ball falls the iron liquid drop after fusing, by High Temperature Gas
Body and carbon ball are further sufficiently heated and (are overheated) so that iron liquid outflow temperature reaches requirement, and carbon ball is that phosphorus content is higher
Substance, being capable of carburetting when iron liquid drop is by carbon ball；
S5: with the fusing of furnace charge, needing optionally suitably to increase high carbon ball with the charging of furnace charge and make a small amount of supplement,
In, the supplement of high carbon ball may be implemented to be precalculated according to the consumption rate of material proportion and high carbon ball and show that furnace charge fills batch
With time and high carbon ball alternate frequency and magnitude of recruitment, according to high carbon ball alternate frequency and magnitude of recruitment, when supplementing furnace charge, to furnace
The high carbon ball of corresponding magnitude of recruitment is added in vivo.
Oxygen is not contained in the high-temperature gas that burner is sprayed into furnace, in addition carbon ball dense non-porous, reactive very low, institute
With high temperature H2O (vapor) and CO2Oxidation-reduction reaction will not largely occur therewith, only when high temperature iron liquid stream is through carbon ball
Gap when can carburetting and it is lost on a small quantity, therefore the consumption of high carbon ball is able to carry out quantitative calculating, in this manner it is possible to
A small amount of carbon ball is suitably supplemented with metal charge as needed.
Fig. 3 schematically shows the specific implementation for the novel cokeless furnace cupola of another kind implemented according to the utility model
Example.
As shown, the difference is that, in embodiment shown in Fig. 3, heating source 2 is day with embodiment shown in Fig. 2
Right air burner is equipped with two rows around furnace body 1, and every row sets there are four and is symmetrically distributed in below furnace body 1, and two rows of heating sources 2 are in etc.
The mode of setting is arranged, wherein be independently arranged between heating source and heating source, be also independently arranged between every row, above a row heating
The burner 21 in source 2 is 400~600mm with a distance from top surface 12, below the burner 21 of row's heating source be with a distance from top surface 12
500~700mm.
Wherein, the burner 21 of every row's heating source 2 is placed in 1 lower part of furnace body, and region corresponding to burner 21 is filled with height
Carbon ball 5；The power of each burner 21 is 2.7MW, and the general power of every row is then 10.8MW, and the general power of all heating sources is
The melting rate of 21.6MW, the cokeless furnace cupola provided in the embodiment can achieve 30t/h.
There are two tapping hole, fecal iron separator and gap bridge are all provided in embodiment shown in Fig. 3, in novel cokeless furnace cupola,
Two of them tapping hole is disposed adjacent, and when usually producing, only can open and run wherein a set of tapping hole and fecal iron separator,
It is another set of give over to it is spare；Due to needing repairing after the refractory material long-time use in fecal iron separator, at this point it is possible to by cutting
It changes spare tapping hole and fecal iron separator to repair, to ensure continuous production.
In embodiment shown in Fig. 3, high carbon ball 5 is carbon ball and a small amount of barren rock electrode ink stripping and slicing.
Above-described is only some embodiments of the utility model.For those of ordinary skill in the art,
Without departing from the concept of the present invention, various modifications and improvements can be made, these belong to practical
Novel protection scope.
Claims (8)
1. a kind of novel cokeless furnace cupola, which is characterized in that including furnace body (1) and heating source (2), the furnace body (1) is internal whole
Body is cavity structure up and down, is provided with feed opening (6) and at least one tapping hole (7), the feed opening on furnace body (1)
(6) it is connected to tapping hole (7) by the cavity structure, wherein
The crucible zone and fusion zone of the cavity structure are all provided with the filling for being set to the high carbon ball (5) for accommodating support furnace charge (8)
Section (11),
The heating source (2) is neat gas burner, and the burner (21) of the neat gas burner is set on furnace body (1), and position
Filler section (11) in high carbon ball (5).
2. novel cokeless furnace cupola according to claim 1, which is characterized in that the high carbon ball (5) of filling is carbon
Ball and/or graphite electrode stripping and slicing.
3. novel cokeless furnace cupola according to claim 2, which is characterized in that the top surface of the high carbon ball (5) of filling
(12) it is higher by (21) 400~700mm of burner.
4. novel cokeless furnace cupola according to claim 3, which is characterized in that the heat source temperature that the burner (21) provides
It is 1700 DEG C -2000 DEG C.
5. novel cokeless furnace cupola according to claim 1, which is characterized in that the heating source (2) around furnace body (1) at least
Equipped with a row, and every row is uniformly placed at least two heating sources (2).
6. novel cokeless furnace cupola according to claim 5, which is characterized in that when being equipped with two rows of heating source (2), every row
Between arranged in a manner of just setting, being inverted or waiting and set.
7. novel cokeless furnace cupola according to claim 1-6, which is characterized in that further include at least one slag iron
Separator (3) and at least one gap bridge (4), each tapping hole (7) is respectively via gap bridge (4) and a fecal iron separator (3)
It is connected.
8. novel cokeless furnace cupola according to claim 7, which is characterized in that the neat gas burner is with natural
Gas-oxygen burner high-temperature burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820555843.1U CN208187094U (en) | 2018-04-17 | 2018-04-17 | Novel cokeless furnace cupola |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820555843.1U CN208187094U (en) | 2018-04-17 | 2018-04-17 | Novel cokeless furnace cupola |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208187094U true CN208187094U (en) | 2018-12-04 |
Family
ID=64434118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820555843.1U Active CN208187094U (en) | 2018-04-17 | 2018-04-17 | Novel cokeless furnace cupola |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208187094U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019201183A1 (en) * | 2018-04-17 | 2019-10-24 | 广东北晟益通实业有限公司 | Cokeless cupola furnace and method of melting iron using same |
| CN112853020A (en) * | 2020-12-31 | 2021-05-28 | 广钢气体(广州)有限公司 | Water-cooled cupola furnace and smelting method using same |
-
2018
- 2018-04-17 CN CN201820555843.1U patent/CN208187094U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019201183A1 (en) * | 2018-04-17 | 2019-10-24 | 广东北晟益通实业有限公司 | Cokeless cupola furnace and method of melting iron using same |
| CN112853020A (en) * | 2020-12-31 | 2021-05-28 | 广钢气体(广州)有限公司 | Water-cooled cupola furnace and smelting method using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5107517A (en) | Melting furnace | |
| CN105698529A (en) | Improved type side-blowing molten pool smelting furnace | |
| CN108642237A (en) | A kind of steelmaking equipment | |
| CN205115520U (en) | Online baking equipment of alloy and alloy toast charging system on line | |
| CN111518986B (en) | Steelmaking method of scrap steel smelting system by utilizing primary combustion heat energy | |
| CN208187094U (en) | Novel cokeless furnace cupola | |
| CN105441694A (en) | Method for treating copper concentrate through improved side blowing molten pool melting furnace | |
| CN108866270A (en) | A kind of steelmaking equipment | |
| RU2482077C2 (en) | Cupola furnace and method of obtaining molten silica | |
| CN105483393A (en) | Method for treating secondary lead through improved side-blowing smelting reduction furnace | |
| CN104540968B (en) | Start a kind of smelting technology | |
| CN108253779A (en) | Plasma melting furnace cupola and its molten iron method | |
| CN208108781U (en) | Plasma melting furnace cupola | |
| CN208472142U (en) | A kind of steelmaking equipment | |
| CN103063030B (en) | A kind of modified compound stove of slag and operating procedure thereof | |
| Mc Dougall | Ferroalloys processing equipment | |
| CN212713622U (en) | System for smelting scrap steel by utilizing once-combustion heat energy | |
| CN108413767A (en) | Novel cokeless furnace cupola and the method for utilizing the device molten iron | |
| CN205090798U (en) | Improved generation side -blown molten bath smelting furnace | |
| CN204648921U (en) | A kind of natural gas cupola | |
| CN105506210B (en) | The melting method of fuel-gas shaft furnace and melting and reducing metalliferous material | |
| JP2001181727A (en) | Method for monitoring condition in electric furnace | |
| CN208472141U (en) | A kind of steelmaking equipment | |
| JP3846177B2 (en) | Blast tuyere of shaft furnace | |
| TWI817466B (en) | Electric furnaces and steelmaking methods |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20240119 Granted publication date: 20181204 |