CN206073702U - A kind of smelting furnace - Google Patents
A kind of smelting furnace Download PDFInfo
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- CN206073702U CN206073702U CN201621048837.4U CN201621048837U CN206073702U CN 206073702 U CN206073702 U CN 206073702U CN 201621048837 U CN201621048837 U CN 201621048837U CN 206073702 U CN206073702 U CN 206073702U
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Abstract
This utility model is related to a kind of smelting furnace, the burner hearth of the smelting furnace is divided into the first fusion zone, decanting zone and the second fusion zone being sequentially communicated by partition wall, wherein, it is respectively equipped with above the furnace roof of first fusion zone and second fusion zone on the furnace wall of charge door, first fusion zone and second fusion zone and is respectively equipped with heat-storage type burner；The bottom of the decanting zone is provided with slag exit and is exported with thermal state metal；The decanting zone from the burner hearth of furnace roof to decanting zone through being provided with electrode, for electric arc heated material；The furnace bottom least significant end of first fusion zone and second fusion zone is above the furnace bottom of the decanting zone.This utility model combines fuel gas buring heating and the advantage of electric arc heated, it is to avoid the defect of the two, and melting cost is reduced, and smelting efficiency is improved, and good product quality, environmental friendliness have very high practical value.
Description
Technical field
This utility model generally relates to smelting furnace field, and in particular to a kind of smelting furnace.
Background technology
High temperature melting furnace is widely used in the production of black and non-ferrous metal and refining process, and its advantage exists
In efficiency high, technology tradition, process is simple.The restriction of the problems such as development and energy environment however as technique, some biographies
The high temperature melting furnace of system is faced with problems.
According to the species for consuming the energy, the form of melting stove heat can be divided into electric arc heated, coke combustion heating, combustion gas
Combustion heating etc., the above two belong to the traditional smelting furnace of comparison, it is advantageous that technology maturation, simple to operate, market share
Height, reduced investment, single devices treating capacity are big.And its shortcoming is also obvious, first, operating cost is too high, electric power and coke
Price Deng resource-expensive causes the manufacturer's profit margin using these smelting furnaces little.Secondly, these smelting furnace environment
It is unfriendly, burnt especially with coke equal energy source, a large amount of greenhouse gases, harmful gass are produced in heating process, to environment
Cause high risks.3rd, arc-melting furnace needs to consume the consumptive materials such as a large amount of electrodes, with high costs；And adopt coke or coal
There is the defect that objectionable impurities pollute raw material in the smelting furnace for burning into row heating in smelting furnace internal combustion, fuel in the smelting furnace directly with
Material is contacted, and some objectionable impurities, such as sulfur etc. are entered in final products, cause the increase of follow-up refining cost.
Some applications have been obtained in some metals and non-metallurgical industry using the smelting furnace that fuel gas buring is heated.Its
Cardinal principle is to mix injection in backward smelting furnace using combustion gas such as coal gas and natural gass to be burnt to heat with air
Melting materialss.Compared with arc-melting furnace, the advantage of this smelting furnace is as heating energy using cheap coal gas etc.
Source, reduces production cost.Compared with the smelting furnace using coke as fuel, the advantage of this smelting furnace in avoiding
Evil impurity is for the pollution of material, it is possible to achieve the melting production more cleaned.And which also has the shortcomings that intrinsic, smelting furnace first
The thermal efficiency is low, it will usually even lower less than 50%, and which relies primarily on radiant heat transfer, and melt pool height is difficult to improve, and causes monomer
Melting furnace output is not high, constrains its popularization and application.
Therefore, in order to solve the problems, such as the high difficult problem of melting production cost, solve objectionable impurities pollution metal product,
Solve the problems, such as that temperature field is uneven, slag separates bad asking with thermal state metal in fuel gas buring heating poor heat transfer and molten bath
A kind of topic, it is necessary to new smelting furnace of utility model.
Utility model content
The purpose of this utility model is to provide a kind of smelting furnace, can reduce gas consumption, it is to avoid coke, coal etc. with it is molten
In changing material directly contact, solves the problems, such as fuel gas buring heating poor heat transfer and solving molten bath, temperature field is uneven, slag with it is hot
State metal separates bad problem.
This utility model provides a kind of smelting furnace, and the burner hearth of the smelting furnace is divided into first for being sequentially communicated and is melted by partition wall
Change area, decanting zone and the second fusion zone, wherein, it is respectively equipped with above the furnace roof of first fusion zone and second fusion zone
Heat-storage type burner is respectively equipped with the furnace wall of charge door, first fusion zone and second fusion zone；The decanting zone
Bottom be provided with slag exit and thermal state metal and export；The decanting zone is from the burner hearth of furnace roof to decanting zone through being provided with electricity
Pole, for electric arc heated material；The furnace bottom least significant end of first fusion zone and second fusion zone is above the sedimentation
The furnace bottom in area.
The furnace bottom of above-mentioned smelting furnace, first fusion zone and second fusion zone is towards the direction of the decanting zone
Arrange diagonally downward；First fusion zone with the opening that connects the decanting zone is equipped with below second fusion zone,
The opening is on the partition wall.
The high temperature cigarette of above-mentioned smelting furnace, the exhanst gas outlet of first fusion zone and the heat-storage type burner in which
The high-temperature flue gas import of gas inlet communication, the exhanst gas outlet of second fusion zone and the heat-storage type burner in which connects
It is logical.
Above-mentioned smelting furnace, the gradient that the burner of the heat-storage type burner is arranged on side wall and described for being located
The furnace bottom incline direction of second fusion zone at one fusion zone or place is consistent.
Above-mentioned smelting furnace, the heat-storage type burner include a pair of burners of alternation, the spray of the pair of burner
Outgoing direction is oppositely arranged in 180 °.
Above-mentioned smelting furnace, the heat-storage type burner be Double-regenerative combustor, the heat-storage type burner it is combustion-supporting
Gas input passage is with combustion gas input channel by the heat storage of the heat-storage type burner.
Above-mentioned smelting furnace, is provided with high temperature fume dust removal dress between the gas approach and heat storage of the heat-storage type burner
Put.
Above-mentioned smelting furnace, is provided with gas cleaning dress between the heat storage and flue gas discharge opening of the heat-storage type burner
Put.
Above-mentioned smelting furnace, the slag exit of the decanting zone are arranged less than the outlet of the thermal state metal.
Above-mentioned smelting furnace, the furnace wall of the smelting furnace, furnace roof and furnace foundation adopt refractory material and refractory brick
It is built into；Cooling copper plumbing is equipped with inside the furnace wall of the smelting furnace with furnace roof.
The beneficial effects of the utility model are, first, using regenerative combustion technology fuel gas with low heat value, can be with maximum limit
Degree ground reduces gas consumption using the heat in high-temperature flue gas, solves fume emission, problem of environmental pollution.Low grade fever can be utilized
The brown coal of value, jet coal etc. be cheap and the coal resources that are industrially difficult to substantially apply as coal gas primary raw material,
Solve the high difficult problem of melting production cost.
Secondly, using fuel gas buring, it is to avoid coke, coal etc. and melting materialss directly contact, solve objectionable impurities pollution
The problem of metal product.
Furthermore, using subregion melting, the relatively thin bed of material can be adopted in smelting zone, solve fuel gas buring heating heat transfer
Poor problem；Be incubated using electrode insertion molten bath in decanting zone, solve that temperature field in molten bath is uneven, slag with it is hot
Metal separates bad problem；High molten bath thickness can be adopted in decanting zone, solve the problems, such as that a utilization rate is low, improve bed
Utilization rate, solves the problems, such as that production scale maximizes.
Description of the drawings
Longitudinal cross-sectional schematics of the Fig. 1 for this utility model smelting furnace；
Flowage structure cross-sectional schematic when Fig. 2 this utility model heat-storage type burner works；
Flowage structure cross-sectional schematic when Fig. 3 this utility model heat-storage type burner works after commutation.
Specific embodiment
Below in conjunction with drawings and Examples, specific embodiment of the present utility model is described in more details, with
Just better understood when the advantage of 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.
A kind of combustion gas of the present utility model is suitable for processing nonferrous metals ore, iron mine with the smelting furnace of electric arc combined heat
Stone, second metallurgy slag etc., are separated with slag for valuable metal.Using smelting furnace melting low cost, environmental friendliness, the product matter
Amount is high, stove monomer treating capacity is big, adaptability to raw materials is wide.
The technical solution of the utility model provides the smelting furnace of a kind of combustion gas and electric arc combined heat, the structure of smelting furnace
Including furnace foundation, refractory material furnace bottom, the body of heater side wall being built into by refractory brick and refractory material of built-in cooling Copper Water Jacket, it is located at
Partition wall between fusion zone and decanting zone, the furnace roof above burner hearth, the charge door above the furnace roof of fusion zone, positioned at heavy
Slag exit and thermal state metal outlet, the heat-storage type burner on the opposite sides wall of fusion zone, air-introduced machine below drop area,
Flue, gas pipeline, the electrode for being placed in decanting zone furnace roof.Wherein heat-storage type burner includes the accumulation of heat material inside heat storage
Material.
It is divided into fusion zone and decanting zone two large divisions in whole smelting furnace burner hearth, decanting zone furnace bottom will be less than fusion zone stove
Bottom, is communicated with decanting zone below fusion zone.
On two ends side wall relative in fusion zone, (melting furnace wall) is provided with heat-storage type burner, combustion-supporting with high temperature using combustion gas
Solid material is heated in air mixed combustion.In the area, furnace bottom is designed using tilting, low near decanting zone side, is heated fusing
In flow direction of material decanting zone afterwards.
Through there is electrode such as graphite on furnace roof, graphite electrode insertion is incubated thing using electric arc heated in molten bath for decanting zone
Material, is finally completed thermal state metal in decanting zone and is separated with slag.Slag passes through slag exit and heat respectively with thermal state metal
State metal outlet is discharged.
Whole smelting furnace side wall (melting furnace wall), furnace roof and furnace foundation are built into using refractory material and refractory brick, its
In be provided with Copper Water Jacket inside smelting furnace side wall and furnace roof fire resisting material, to protect refractory material.
The structure of smelting furnace as shown in figure 1, including furnace foundation 1, refractory material furnace bottom 2, built-in cooling Copper Water Jacket by resistance to
The body of heater side wall 3 that firebrick and refractory material are built into, the partition wall 4, stove above burner hearth between fusion zone and decanting zone
The top 5, charge door 6 above the furnace roof of fusion zone, the slag exit 7 below decanting zone and thermal state metal export 8, are located at
Heat-storage type burner burner 9 on the opposite sides wall of fusion zone, is placed in the graphite electrode 14 of decanting zone furnace roof, and such as Fig. 2, figure
The heat-storing material 10a inside regenerator 10 shown in 3,10b, aerator 11, flue 12, gas pipeline 13a, 13b.
As shown in figure 1, smelting furnace can be divided into fusion zone 15, decanting zone 16, fusion zone is in symmetrical cloth in decanting zone both sides
Put, fusion zone furnace bottom is higher than decanting zone furnace bottom.Solid material 17 is put in fusion zone by charging aperture, relative in fusion zone
The heat-storage type burner alternate blowing flame combustion of both sides, using material in high temperature conduction heating fusion zone, material starts to soften
And ultimately form flowable melt.Fusion zone furnace bottom is designed using tilting, it is ensured that flowable melt is to fusion zone and decanting zone
Between partition wall side flowing.Opening is left below partition wall, it is ensured that melt is entered in decanting zone.
Still as shown in figure 1, in decanting zone, by the molten bath 18 of the melt composition liquid for constantly entering from fusion zone, sinking
Through there is graphite electrode, graphite electrode is inserted in molten bath drop area's furnace roof, is incubated molten bath using electric arc heated, it is ensured that slag and heat
The final separation of state metal.Slag after separation is discharged by slag notch, and thermal state metal is discharged by metal outlet.
Smelting furnace described in the utility model is substantially that the fusing of solid material, slag are separated difference with thermal state metal
Interconnect to have in the area of partition wall in the middle of still at two and complete.As the fusing of solid material needs to consume most heat
Amount, and the insulation in molten bath institute calorific requirement is few, so smelting furnace described in the utility model utilizes the combustion gas of low cost in smelting zone
Combustion melting solid material, reduces cost, using the relatively thin bed of material, it is ensured that excellent heat conduction efficiency；Electric arc is utilized in decanting zone
Insulation molten bath, the both consumption of the high electric power of reduces cost, and electrode inserts heating in higher molten bath and turn avoid combustion gas and adds
The problem of hot poor thermal conduction.
Specifically, the combustion gas that low cost is relied primarily in fusion zone is burnt, by regenerative combustion technology, in combustion
In the state of gas consumption is relatively fewer, in-furnace temperature can be up to more than 1600 DEG C.Heat-storage type burner primary structure is as schemed
2nd, shown in Fig. 3, including being arranged in burner 9, regenerator 10 on the relative side wall in fusion zone, heat-storing material 10a, the 10b in accumulation of heat room,
Gas pipeline 13a, 13b, flue gas and air common conduit 19a, 19b, four-way change-over valve 20, flue 12, fume treatment dress
Put 21, aerator 11, air-introduced machine 22.
When right side burner combustion, as shown in Fig. 2 arrow represents that air-flow is moved towards in way.Cold conditions air enters via aerator
The regenerator for being provided with heat storage 10a is entered with air common conduit 19a by flue gas after entering four-way change-over valve 20, now heat storage
10a is in the condition of high temperature, and up to more than 1000 DEG C, main material can be that the heat exchange efficiencies such as honeycomb ceramics and Ceramic Balls are high to temperature
Refractory material.Cold conditions air is exchanged heat with heat storage when heat storage 10a, and cold conditions air is heated to form temperature and is up to
1000 DEG C of high temperature air, and regenerator temperature is then gradually lowered.Now gas pipeline 13a is in open mode, and 13b is in pass
Closed state.Being injected in fusion zone 15 by burner after the combustion gas entered by gas pipeline 13a and high temperature air premixing is carried out
Burning, ignition temperature can reach more than 1600 DEG C.
Due to the effect of air-introduced machine 22, the high-temperature flue gas in the internal furnace of fusion zone are entered by drain and are provided with heat storage 10b's
In regenerator, now heat storage 10b in temperature compared with low state, temperature below 500 DEG C, its material and front addressed accumulation of heat
Body 10a is identical.Heat storage 10b of the high-temperature flue gas entered from the burner hearth of fusion zone by low temperature, carries out high-temperature flue gas and accumulation of heat
The heat exchange of body, heat storage are gradually heated to more than 1000 DEG C, and high-temperature flue gas are cooled to less than 250 DEG C, by flue gas with
Flue 12 is entered after air common conduit 19b and four-way change-over valve 20, air is entered Jing after flue gas processing device 21.
After certain hour, gas pipeline 13a first is closed, and four-way change-over valve 20 commutates afterwards, operation principle such as Fig. 3
It is shown, pass through after four-way change-over valve 20, to enter flue gas and air common conduit 19b by the cold conditions air that aerator 11 is blasted, afterwards
Enter into and be provided with the regenerator of heat storage 10b, as the front heat storage 10b that commutates of four-way change-over valve 20 has been heated to 1000
More than DEG C, there is heat exchange with which in cold conditions air through after heat storage 10b, cold conditions air is heated to 1000 DEG C or so becomes high temperature
Air, and heat storage 10b is then gradually cooled down.Now gas pipeline 13b is opened, and combustion gas starts burning after mixing with high temperature air,
Combustion flame temperature can be up to more than 1600 DEG C.
Due to the effect of air-introduced machine 22, the high-temperature flue gas in the burner hearth of fusion zone enter into the regenerator for being provided with heat storage 10a
Interior, the heat storage 10a that temperature noted earlier is reduced is exchanged heat with high-temperature flue gas, heat storage be gradually heated to 1000 DEG C with
On, and high-temperature flue gas are then gradually cooled as it passes through the cooler less than 250 DEG C, by after four-way change-over valve 20 Jing after by flue 12, in cigarette
Flash Gas Compression Skid System 21 is discharged after being cleaned.
As described above, the two regenerator burner alternations in left and right, four-way change-over valve, gas pipeline etc. are using automatic
Change control.Arrangement of the regenerator burner on the side wall of fusion zone is also adopted by being in tilted layout, and the gradient keeps one with fusion zone furnace bottom
Cause, to ensure that burner keeps optimum distance with material, improve heat conduction efficiency.
Fusion zone furnace bottom adopts tilting furnace bottom, and angle is between 3-5 °, it is ensured that the material after fusing can flow to partition wall
Direction, so as to enter eventually into decanting zone.
In decanting zone, melting materialss form molten bath, and decanting zone furnace bottom will be less than decanting zone furnace bottom, and concrete drop can basis
Material nature designed, designed, main principle are that the ratio of the impurity content such as tenor and stone-like pulse in material is how many.Sedimentation
The graphite electrode of area's furnace roof adopts alternating current, electrode to be incubated molten bath using electric arc heated in being inserted into molten bath, and final melt is completed
Slag is separated with thermal state metal, is released with thermal state metal outlet by slag exit.
Additionally, used as the extension of technical scheme, the technical solution of the utility model can be adopted in heat-storage type burner
Double heat storage type combustion technology, both using high temperature air, is also adopted by high-temperature fuel gas, and heat all may be from high in smelting furnace fusion zone
Warm flue gas.
This utility model can be entered with the high-temperature flue gas in the smelting furnace and arrange before heat storage high temperature fume dust removal device, use
In protection heat storage, it is not etched or blocks.
Furthermore it is also possible to adopt oxygen-enriched as combustion-supporting gas, by heat-storage type burner burning, combustion can be further reduced
Gas consumption, and improve melting in-furnace temperature.
In a word, combustion gas of the present utility model is had the advantages that with the smelting furnace of electric arc combined heat：
First, arranged using body of heater subregion, be respectively equipped with and interconnect but there are two fusion zones of partition wall heavy with one
Drop area.In fusion zone melting materialss, thermal state metal is completed in decanting zone insulation molten bath and separated with slag.It is primarily due to solids
The fusing of material generally needs to consume more than the 80% of fusing gross energy, so adopting heat-storage type burner combustion gas in fusion zone
Heat is provided, melting cost is significantly reduced, it is to avoid using the expensive power energy (electric arc) as main heating source.And the area
Interior furnace bottom is designed using tilting, is flow in decanting zone after material melting, the less height of bed of material holding (<500mm), keep away
Exempt from the defect that fuel gas buring heats poor thermal conduction.Secondly in decanting zone as institute's calorific requirement is less, using electric arc heated, it is ensured that
Higher melt pool height, improve smelting furnace monomer yield, it is to avoid fuel gas buring heated molten bath is highly difficult to the defect for improving.
Second, using regenerative combustion technology, initially with high-temperature air combustion promoter of the temperature more than 1000 DEG C, greatly
Reduce gas consumption, smoke discharge amount is greatly reduced, improve melting in-furnace temperature (>1600 DEG C), exhaust gas temperature is reduced
To less than 250 DEG C, the thermal efficiency is high.Using low heat value (<3000Kcal/m3) coal gas, coal gas, it is particularly possible to it is low using price
Used as coal gas raw material, its cost is the 50% of electricity price lattice to the coal resources such as honest and clean, the industrial brown coal jet coal without value
It is even lower.
3rd, it is to avoid using the fuel combustions such as coke heating in fusion zone, so as to cause to be harmful to final products
The pollution of impurity element.Follow-up refining cost is greatly reduced, value-added content of product is improve.
4th, adaptability to raw materials is wide, and melting material can be ferrous metal Ore, nonferrous metallic ores, after direct-reduction
Material, second metallurgy slag etc..
In sum, compared with other smelting furnaces, which combines fuel gas buring heating and electric arc heated to this utility model
Advantage, it is to avoid the defect of the two, melting cost are reduced, and smelting efficiency is improved, and good product quality, environmental friendliness have very high
Practical value.
Finally it should be noted that：Obviously, 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, may be used also 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
It is amplified obvious change or change still in protection domain of the present utility model among.
Claims (10)
1. a kind of smelting furnace, it is characterised in that the burner hearth of the smelting furnace be divided into by partition wall be sequentially communicated the first fusion zone,
Decanting zone and the second fusion zone, wherein,
Charge door, first fusion zone and institute are respectively equipped with above the furnace roof of first fusion zone and second fusion zone
Heat-storage type burner is respectively equipped with the furnace wall for stating the second fusion zone；
The bottom of the decanting zone is provided with slag exit and is exported with thermal state metal；Burner hearth of the decanting zone from furnace roof to decanting zone
It is interior through electrode is provided with, for electric arc heated material；
The furnace bottom least significant end of first fusion zone and second fusion zone is above the furnace bottom of the decanting zone.
2. smelting furnace according to claim 1, it is characterised in that the stove of first fusion zone and second fusion zone
Direction of the bottom towards the decanting zone is arranged diagonally downward；It is equipped with below first fusion zone and second fusion zone
The opening of the decanting zone is connected, the opening is located on the partition wall.
3. smelting furnace according to claim 1, it is characterised in that the exhanst gas outlet of first fusion zone with its in institute
The high-temperature flue gas import connection of heat-storage type burner is stated, the exhanst gas outlet of second fusion zone is fired with the heat accumulating type in which
The high-temperature flue gas import connection of burner.
4. smelting furnace according to claim 2, it is characterised in that the burner of the heat-storage type burner is arranged on side wall
Gradient be located first fusion zone or place second fusion zone furnace bottom incline direction it is consistent.
5. smelting furnace according to claim 1, it is characterised in that the heat-storage type burner includes a pair of alternation
Burner, the emission direction of the pair of burner are oppositely arranged in 180 °.
6. smelting furnace according to claim 1, it is characterised in that the heat-storage type burner is Double-regenerative combustor,
The combustion-supporting gas input channel of the heat-storage type burner is with combustion gas input channel by the accumulation of heat of the heat-storage type burner
Body.
7. smelting furnace according to claim 1, it is characterised in that the gas approach and heat storage of the heat-storage type burner
Between be provided with high temperature fume dust removal device.
8. smelting furnace according to claim 1, it is characterised in that the heat storage of the heat-storage type burner is discharged with flue gas
Smoke eliminator is provided between mouthful.
9. smelting furnace according to claim 1, it is characterised in that the slag exit of the decanting zone is less than the hot gold
The outlet of category is arranged.
10. smelting furnace according to claim 1, it is characterised in that the furnace wall of the smelting furnace, furnace roof and furnace foundation are equal
It is built into using refractory material and refractory brick；Cooling copper plumbing is equipped with inside the furnace wall of the smelting furnace with furnace roof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621048837.4U CN206073702U (en) | 2016-09-09 | 2016-09-09 | A kind of smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621048837.4U CN206073702U (en) | 2016-09-09 | 2016-09-09 | A kind of smelting furnace |
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| Publication Number | Publication Date |
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| CN206073702U true CN206073702U (en) | 2017-04-05 |
Family
ID=58437323
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| CN201621048837.4U Expired - Fee Related CN206073702U (en) | 2016-09-09 | 2016-09-09 | A kind of smelting furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352698A (en) * | 2016-09-09 | 2017-01-25 | 江苏省冶金设计院有限公司 | Smelting furnace |
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2016
- 2016-09-09 CN CN201621048837.4U patent/CN206073702U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352698A (en) * | 2016-09-09 | 2017-01-25 | 江苏省冶金设计院有限公司 | Smelting furnace |
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Effective date of registration: 20190102 Granted publication date: 20170405 |
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