CN104053793B - Remove the device and method of the unburned sedimentary of Blast Furnace Raceway - Google Patents
Remove the device and method of the unburned sedimentary of Blast Furnace Raceway Download PDFInfo
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- CN104053793B CN104053793B CN201280056785.3A CN201280056785A CN104053793B CN 104053793 B CN104053793 B CN 104053793B CN 201280056785 A CN201280056785 A CN 201280056785A CN 104053793 B CN104053793 B CN 104053793B
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- blast furnace
- sedimentary
- unburned
- transmitting tube
- sealing container
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Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 238000009527 percussion Methods 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 114
- 238000007789 sealing Methods 0.000 claims description 96
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 76
- 239000000463 material Substances 0.000 claims description 75
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 40
- 229910052757 nitrogen Inorganic materials 0.000 claims description 38
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 36
- 239000003245 coal Substances 0.000 claims description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 25
- 235000010333 potassium nitrate Nutrition 0.000 claims description 19
- 239000004323 potassium nitrate Substances 0.000 claims description 19
- 235000021552 granulated sugar Nutrition 0.000 claims description 18
- 235000010344 sodium nitrate Nutrition 0.000 claims description 17
- 239000004317 sodium nitrate Substances 0.000 claims description 17
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 12
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 10
- 239000004411 aluminium Substances 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000003475 lamination Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims 2
- 239000000571 coke Substances 0.000 description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 13
- 239000001301 oxygen Substances 0.000 description 13
- 229910052760 oxygen Inorganic materials 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 230000008021 deposition Effects 0.000 description 5
- 230000001066 destructive effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002360 explosive Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000002309 gasification Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/22—Dust arresters
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
- C21B9/02—Brick hot-blast stoves
- C21B9/06—Linings
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/44—Refractory linings
- C21C5/441—Equipment used for making or repairing linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
- F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
- F41B11/80—Compressed-gas guns, e.g. air guns; Steam guns specially adapted for particular purposes
- F41B11/87—Compressed-gas guns, e.g. air guns; Steam guns specially adapted for particular purposes for industrial purposes, e.g. for surface treatment
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Manufacture Of Iron (AREA)
- Blast Furnaces (AREA)
Abstract
The present invention provides the device and method of a kind of unburned sedimentary removing Blast Furnace Raceway, this device includes that the unburned sedimentary to the raceway zone rear end being formed at blast furnace applies impact energy to destroy the percussion mechanism of described unburned sedimentary such that it is able to more efficient and remove the unburned sedimentary being formed in operation in the raceway zone within blast furnace effectively.
Description
Technical field
The present invention relates to the device and method of a kind of unburned sedimentary removing Blast Furnace Raceway, this removal
The device and method of the unburned sedimentary of Blast Furnace Raceway is used for more efficient and removes effectively at blast furnace
The unburned sedimentary being formed in internal raceway zone.
Background technology
In general, blast furnace operation is to be loaded as the iron ore of main material in blast furnace and as main fuel
Coke, and be blown into high-temperature hot-air and oxygen by the air port of bottom house, thus produce the work of molten iron
Sequence.Coke is burnt by high-temperature hot-air and oxygen in blast furnace.By the height producing when coke burns
Heat and reducing gases, the iron ore in blast furnace is reduced and melted.Solid, liquid, gas and powder etc. are many
Plant phase (Phase) to coexist in blast furnace, and it is anti-to produce the chemistry more than kind more than 20 such as reduction of iron ore reaction
Should.Iron ore and coke fall lower section for 4～5 hours from the top of blast furnace, during this, by respectively
Plant phase change and chemical reaction becomes molten iron and slag, and discharged by the tapping hole of bottom house.
At bottom house, be blown into air or oxygen by air port, fine coal as auxiliary fuel together with hot blast
It is blown in blast furnace.By being blown into hot blast within blast furnace and oxygen, coke and pulverized coal friring.This burning
The main raceway zone before the air port being blown into hot blast inside blast furnace of reaction is carried out.
In described raceway zone, because of the fierce Yo-yo phenomenon of coke and the reason such as oxygen is not enough, can produce
The unburned phenomenon of a part in the coke of powdered and fine coal.Unburned coke and fine coal are in convolution
Pile up after district and form sedimentary.Additionally, the deposition being made up of unburned coke blacking, fine coal and ash content
Layer forms firm wall, thus hinders raceway zone gas to the inflow at blast furnace center, and hinders on top
The flowing of the fused mass generating.Especially, it is being blown in the blast furnace operation of fine coal in a large number, because fine coal
Combustibility is better than coke, increased retention in stove for the coke, thus increases the growing amount of powder,
Also increase the growing amount of unburned fine coal simultaneously, and then after raceway zone, pile up more sedimentary.
Thus, the mobility of heat transfer and reducing gases is deteriorated and causes the decline of molten iron production amount, and reduces also
The utilization rate of Primordial Qi, causes the decline of blast furnace operation efficiency on the whole.The internal volume of blast furnace is bigger, heavy
Long-pending thing is more, and this problem is more serious.
In order to eliminate the sedimentary of this raceway zone in time, attempted the regulation fine coal amount of being blown in the past or led to
Cross and improve wind pushing temperature, increase the oxygen amount of being blown into, improve the internal temperature of blast furnace or improve fine coal and be blown into use
Spray gun structure improves multiple methods such as the flammability of fine coal.
But, for removing micro mist, slag and coal ash grade the sedimentary solidifying as concrete,
Described conventional structure is not perfect technology, it is impossible to bring gratifying result.Accordingly, it would be desirable to
Develop a kind of technology that can eliminate described sedimentary in time.
Content of the invention
Technical problem
Then, the present invention provides the device and method of a kind of unburned sedimentary removing Blast Furnace Raceway,
So as to more efficient and remove effectively be formed in operation Blast Furnace Raceway unburned deposition
Layer.
Technical scheme
To this end, this removal device mays include: percussion mechanism, for the raceway zone rear end being formed at blast furnace
Unburned sedimentary apply impact energy, to destroy described unburned sedimentary.
Described percussion mechanism mays include: sealing container, for applying punching by blast to described sedimentary
Hit；And gas generating material, it is stored in described sealing container, be used for generating gas and hold to ignite sealing
Device.
Described gas generating material can comprise the material being generated expanding gas by chemical reaction.
Described gas generating material can comprise the material being expanded by gasification.
Described gas generating material can be the mixture being mixed with granulated sugar in potassium nitrate or sodium nitrate.
Described gas generating material can further include lam-oil.
Described gas generating material can comprise the potassium nitrate of 70～80 weight % or sodium nitrate and 20～30 weights
The granulated sugar of amount %.
Described gas generating material can comprise potassium nitrate or sodium nitrate, 20～30 weight of 60～80 weight %
The granulated sugar of % and the lam-oil of 0～10 weight %.
Described gas generating material can be liquid oxygen.
Described sealing container can be constituted by by the material of thermal melting in blast furnace.
Described sealing container can be made up of aluminium, iron or stainless steel.
Described sealing container can be internal for hollow, is formed in side and sends out for internally injecting gas
The inlet of green material, and can be combined with removably for sealing container on described inlet
The structure of lid.
Described sealing container can be leading section, side be sharp-pointed structure.
This device can farther include: conveying device, is used for making described percussion mechanism be positioned at unburned deposition
In Ceng.
Described conveying device mays include: transmitting tube, is connected with internal raceway zone by the air port of blast furnace,
And sealing container is carried in inside；With energy supply unit, being connected to described transmitting tube, supply is used for launching
The energy of described sealing container.
Described transmitting tube can be the structure being connected with the observation window of the raceway zone being arranged on blast-furnace tuyere.
Described transmitting tube can be mounted in and be arranged at the structure that the fine coal of blast-furnace tuyere is blown into spray gun.
Described energy supply unit mays include: push rod, is used for propelling out described sealing container；And drive division,
For making described push rod move forward, described energy supply unit can be to utilize push rod to propel out sealing container
Structure.
Described energy supply unit can be to described transmitting tube supply gas, and launched close by gas pressure
The structure of envelope container.
Described gas can be nitrogen or air.
Described conveying device can farther include: gas-tight ring, along the inner peripheral surface setting of described transmitting tube,
It is close to described sealing container and keep airtight.
Described energy supply unit mays include: supply pipe, is connected with described transmitting tube；Pressure pan, and described
Supply pipe connects, and inside is filled with gas, supplies gases at high pressure to transmitting tube；First valve, is arranged on institute
State supply pipe, for opening and closing supply pipe；And booster, it is arranged on the tank connected gas with described high pressure and supply
To on line, for filling gas to pressure pan.
Described energy supply unit can farther include: equal splenium, described for making before launching sealing container
The pressure of transmitting tube is consistent with blast furnace internal pressure.
Described equal splenium mays include: filling tank, is connected with described gas feed line, and gas is filled into described
Fill tank；Arm, is arranged between described filling tank and described transmitting tube；Manifold valve, is arranged on described
It on arm, is used for opening and closing arm；It with transmitting pipe valve, is arranged on described transmitting tube, launches for opening and closing
Pipe.
On the other hand, this minimizing technology mays include: that the unburned to the raceway zone rear end being formed at blast furnace sinks
Lamination applies impact energy, with the step destroying described unburned sedimentary.
This minimizing technology mays include: preparation process, prepares to be injected with the gas for generating gas in inside
The sealing container of generating material；Supplying step, the unburned sedimentary conveying to Blast Furnace Raceway is described close
Envelope container；With blast step, sealing container is made to explode by heat in blast furnace.
Described gas generating material can comprise the material being generated expanding gas by chemical reaction.
Described gas generating material can comprise the material being expanded by gasification.
Described gas generating material can be the mixture being mixed with granulated sugar in potassium nitrate or sodium nitrate.
Described gas generating material can further include lam-oil.
Described gas generating material can comprise the potassium nitrate of 70～80 weight % or sodium nitrate and 20～30 weights
The granulated sugar of amount %.
Described gas generating material can comprise potassium nitrate or sodium nitrate, 20～30 weight of 60～80 weight %
The granulated sugar of % and the lam-oil of 0～10 weight %.
Described gas generating material can be liquid oxygen.
Described sealing container can be constituted by by the material of thermal melting in blast furnace.
Described sealing container can be made up of aluminium, iron or stainless steel.
Described supplying step mays include: lift-launch step, by the air port of blast furnace with internal raceway zone even
Carry on the transmitting tube connecing and seal container；And step of transmitting, supply gases at high pressure to described transmitting tube, with
Propel out sealing container.
Described gas can be nitrogen or air.
Described supplying step can farther include: all pressure steps, was used for before described step of transmitting, will
The pressure of described transmitting tube is adjusted to consistent with the pressure within blast furnace.
Beneficial effect
As described above, according to the present embodiment, by removing the sedimentary being formed at raceway zone rear end, improve
The flowing of gas and fused mass becomes more unimpeded such that it is able to reduces body of heater pressure, and improves reduction
The utilization rate of gas.
Additionally, by removing sedimentary, to combustion chamber supply sufficiently heat, thus the work of blast furnace can be improved
Industry efficiency.
Furthermore it is possible to remove sedimentary under job state, therefore without in order to remove sedimentary or equipment
Maintenance and interruption operation extraly, therefore production efficiency can be improved to greatest extent.
Brief description
The Blast Furnace Raceway unburned sedimentary that Fig. 1 is display the present embodiment removes the schematic diagram of structure.
Fig. 2 is the showing of transmitting tube in the Blast Furnace Raceway unburned sedimentary removal device of display the present embodiment
It is intended to.
Fig. 3 seals container in the Blast Furnace Raceway unburned sedimentary removal device of display the present embodiment
Sectional view.
The part-structure of the Blast Furnace Raceway unburned sedimentary removal device for display the present embodiment for the Fig. 4
Schematic diagram.
Detailed description of the invention
Below, it is described with reference to embodiments of the invention so that the technology of the technical field of the invention
Personnel can easily implement.Those skilled in the art's reason should be understood that and will retouch later
The embodiment stated can be deformed into various ways on the basis of without departing from idea of the invention and scope.Attached
Figure use as far as possible identical reference to represent same or analogous part.
Underneath with the implication of all terms including technical terms and scientific words and skill belonging to the present invention
The implication that the technical staff in art field is commonly understood by is identical.Term defined in dictionary is explained further
For having the implication being consistent with correlation technique document and present disclosure, in the case of undefined,
It is not construed to that there is preferable or very formal implication.
It should be noted that accompanying drawing is schematic diagram, do not draw according to yardstick.For clear and convenience
Ground display, in accompanying drawing the relative size of each several part and ratio some exaggerate or reduce, arbitrary dimension simply shows
Example, rather than determinate size.
The Blast Furnace Raceway unburned sedimentary that Fig. 1 is display the present embodiment removes the schematic diagram of structure.
As it is shown in figure 1, blast furnace 100 is blown into high-temperature hot-air, oxygen by being formed at the air port 110 of bottom
And fine coal, make the iron ore within loading blast furnace and coke melt and produce molten iron.
It is provided with the ajutage 120 for being blown into hot blast in the air port 110 of described blast furnace 100.Described send
Airduct 120 is the tubular construction with inner passage, has for confirming with horizontally arranged at outside front ends
The observation window 122 of the fired state within blast furnace 100.Additionally, in the front of described ajutage 120
Face is formed with socket 124, and fine coal spray gun 130 is inserted in described ajutage 120 by described socket 124
Inside.Therefore, fine coal is put into inside blowpipe by described fine coal spray gun 130, and with put in blowpipe
The hot blast in the portion air port 110 by blast furnace 100 together is blown into the inside of blast furnace 100.
Coke and fine coal are burnt by being blown into hot blast within blast furnace 100 and oxygen.This combustion reaction
Occur mainly in and be blown into the raceway zone 200 before the air port 110 of hot blast to blast furnace 100.Raceway zone 200
By the region of the big pupil shape that the hot blast being blowed by the flow velocity with 250～290m/sec is formed, coke and
Fine coal meets with oxygen at this and burns.A part during this, in the coke of powdered and fine coal
Not burning, and pile up after raceway zone 200 and form unburned sedimentary 210.
This removal device is used for removing described sedimentary 210, including to the raceway zone being formed at blast furnace 100
The sedimentary 210 of 200 rear ends applies impact energy and destroys the percussion mechanism of described sedimentary 210.
In the present embodiment, as in figure 2 it is shown, described percussion mechanism includes by blast to described sedimentary
210 sealing containers 10 applying impact and be stored in described sealing container 10 and generate gas and ignite
Seal the gas generating material 20 of container 10.
Described sealing container 10 is formed as drum, and it is internal is hollow structure such that it is able to fill gas
Body generating material 20.The front end, side of described sealing container 10 is formed for injecting gas generating material
The inlet 12 of 20.Lid 14 can be combined with removably at described inlet 12, be used for sealing and hold
Device 10.
As it can be seen, described sealing container 10 is formed as leading section, side and more arrives the more sharp-pointed structure of end.
This structure, when sealing container 10 and launching to raceway zone 200, can make sealing container 10 easier
In injecting raceway zone 200.Therefore, seal container 10 and can substantially arrive at convolution with relatively low emitted energy
Sedimentary 210 on rear side of district 200.
Described inlet 12 is formed at the sharp-pointed front of described sealing container 10.It is incorporated into described note
The lid 14 of entrance 12 is formed as cone-shaped, constitutes the sharp-pointed front end sealing container 10.At the present embodiment
In, it is threaded on the composition surface of described inlet 12 and described lid 14, therefore to each other can be with
The mode of being screwed combines.
It here, described sealing container 10 can be constituted by by the material of the interior thermal melting of blast furnace 100, is more as the criterion
It really is made up of the material of the fusing point below the atmosphere temperature with the internal raceway zone 200 of blast furnace 100.?
In the present embodiment, described sealing container 10 can be made up of aluminium, iron or stainless steel.Therefore, described close
After envelope container 10 is injected the inside of blast furnace 100 and removed sedimentary 210, by the interior heat fusing of blast furnace 100
And remove.
In the present embodiment, described gas generating material 20 is filled in the inside of described sealing container 10,
And comprise the material being generated expanding gas by chemical reaction.Here, described material can be for passing through blast furnace
The interior heat of 100 carries out reacting and generating the material of gas.Put on the interior heat of the blast furnace 100 of described material,
By sealing container 10 indirect transfer to described material, or directly can pass sealing when container 10 melts
It is delivered to described material.
In the present embodiment, described gas generating material 20 can be at potassium nitrate (KNO3It is mixed with granulated sugar in)
(C12H22O11) mixture.Or, described gas generating material 20 replacement potassium nitrate can comprise sodium nitrate
(NaNO3).Additionally, described gas generating material 20 can further include lam-oil (C16H34).Lam-oil increases
Seal the explosive force of container 10.
Described potassium nitrate or sodium nitrate and granulated sugar can load in sealing container 10 with solid state.
The chemical equation of described gas generating material 20 is, 48KNO3(S)+5C12H22O11(S)=
24K2CO3(S)+36CO3(g)+24N2(g)+55H2O(g).By described reaction, gas generating material
The gas of 20 generation 69mole, and produce the volumetric expansion of thousands of times.
The content of each material constituting described gas generating material 20 can affect gas generating amount, therefore can lead to
Cross and change the content of described each material and control the destructive power sealing container 10.
Change the content of described each material in a variety of forms, and examination is repeated to the destructive power under each content
The result tested, it is thus achieved that the optimum content of each material of following gas generating material 20.
In the present embodiment, described gas generating material 20 can be by the potassium nitrate of 70～80 weight % or nitre
The granulated sugar of acid sodium and 20～30 weight % mixes.Additionally, when comprising lam-oil further, described gas
Body generating material 20 can be by the granulated sugar of the potassium nitrate of 60～80 weight % or sodium nitrate, 20～30 weight %
Mix with the lam-oil of 0～10 weight %.
When the combined amount of described potassium nitrate or sodium nitrate departs from described scope, by the reaction with granulated sugar
The growing amount of the gas producing is too much or very few.Therefore, the explosive force of container is sealed to destruction raceway zone
From the point of view of sedimentary excessive or too small, thus be extremely difficult to desired effect.
So, described gas generating material 20 generates number by the reaction of potassium nitrate or sodium nitrate and granulated sugar
The gas of thousand times of volumes, thus produce the impact energy that can destroy sedimentary 210.
Equipped with described mixture to seal container 10 quick-fried by the bulbs of pressure of gas that produce in inside
Fried.Therefore, the expansion energy of the gas being produced in the mixture in the sedimentary 210 of raceway zone 200
Measure and seal the impact of the explosive force of container 10 and destroy.
Additionally, in another embodiment, described gas generating material 20 can comprise to be expanded by gasification
Material.Here, described gas generating material 20 can be liquid oxygen.
Liquid oxygen exists with liquid condition in sealing container 10.Described liquid oxygen is by blast furnace
Being gasified by sealing the heat of container 10 transmission in the inside of 100, and is expanded to the volume of thousands of times.Therefore,
The container 10 that seals equipped with described liquid oxygen is exploded by the bulbs of pressure of oxygen that produce in inside.
Then, the sedimentary 210 of raceway zone 200 is oxygen gasified by liquid and the expansion energy that produces and sealing
The impact of the explosive force of container 10 and destroy.
Additionally, when liquid oxygen uses as gas generating material 20, liquid oxygen gasified and to deposition
Layer 210 supply oxygen.Therefore, it is possible to additionally acquisition is deposited in the unburned state of sedimentary 210
Fine coal or coke breeze charcoal etc. are by the oxygen being supplied and the effect burnt.
Here, the total amount of the gas generating material 20 being contained in described sealing container 10, can be as required
The state of the sedimentary 210 destroyed is set as different amounts.When the amount of gas generating material 20 is more,
The destructive power sealing container 10 can be improved, but when described amount is too much, owing to destructive power is excessive, having can
Blast furnace 100 equipment can be had influence on.When the amount of gas generating material 20 is very few, owing to destructive power is too weak,
It is possible to destroy less than sedimentary 210.
This removal device farther includes, for launching described sealing container 10 to raceway zone 200, and to make
The conveying device being positioned at sedimentary 210.Fig. 3 and Fig. 4 demonstrates described conveying device.
As it can be seen, described conveying device includes: transmitting tube 30, by the air port of blast furnace 100 110 with
Internal raceway zone 200 connects, and carries described sealing container in inside；Energy supply unit 40, with institute
Stating transmitting tube 30 to connect, supply is for launching the energy of described sealing container 10.
Thus, put on the energy of transmitting tube 30 by energy supply unit 40, be equipped on transmitting tube 30
Sealing container 10 is by transmitted at high speed, and injects in the sedimentary 210 of raceway zone 200.
Described transmitting tube 30 is the tubular construction extending in long way.The internal diameter of described transmitting tube 30 substantially with close
The external diameter of envelope container 10 is corresponding.Inner peripheral surface at described transmitting tube 30 is provided with for plug for seal container
The gas-tight ring 32 in the gap between 10 and described inner peripheral surface.
Here, described transmitting tube 30 is connected with the ajutage 120 in the air port 110 being arranged at blast furnace 100,
Launch sealing container 10 by ajutage 120 to the sedimentary 210 of raceway zone 200.
In the present embodiment, described transmitting tube 30 can be with the horizontal direction front end being arranged on ajutage 120
Observation window 122 connects.In addition to the foregoing structure, described transmitting tube 30 can also be arranged on described air-supply
The end that the fine coal of pipe 120 is blown into spray gun 130 connects.
Described energy supply unit 40 can apply various structures to launch sealing container 10.Implement as one
Example, described energy supply unit 40 mays include: push rod, inserts the inside of described transmitting tube 30, is used for pushing away
Injection seals container；The drive divisions such as driving cylinder, are used for making described push rod high-speed move forward.At described knot
Under structure, by the operation of drive division, while push rod is to move forward at a high speed, propel out sealing container.In
It is to seal container and pass through the thrust of push rod from transmitting tube by transmitted at high speed.
As another embodiment, described energy supply unit 40 can be for supplying high pressure gas to described transmitting tube 30
Body, and the structure sealing container 10 is launched by gas pressure.For launching described sealing container 10
Gas may utilize nitrogen or air.
Fig. 4 illustrates the structure launching the energy supply unit 40 using gases at high pressure sealing container 10.?
Below illustrate in, by seal container 10 transmitting gas be nitrogen structure as a example by illustrate.
It as it can be seen, described energy supply unit mays include: supply pipe 42, is connected with described transmitting tube 30；
Pressure pan 44, is connected with described supply pipe 42, and inside is filled with gas, supplies high pressure to transmitting tube 30
Nitrogen；First valve 46, is arranged on described supply pipe 42, supplies pipe 42 for opening and closing；With booster 48,
It is arranged on the gas feed line 41 being connected with described pressure pan 44, for filling nitrogen to pressure pan.
Thus, the nitrogen being filled in pressure pan 44 is supplied to transmitting tube 30 by supplying pipe 42, and rises
To the motive force effect launching sealing container 10 from transmitting tube 30.
Described pressure pan 44 is for being filled with the tank for launching the high pressure nitrogen sealing container 10, by supplying
To pipe 42, high pressure nitrogen moment is supplied to transmitting tube 30.
Described nitrogen supply line 41 is provided with the 4th valve 53, is supplied by supply line 41 for control
Nitrogen.The side of described pressure pan 44 is provided with the pressure of the internal pressure for detecting pressure pan 44
Meter 54.
The nitrogen that described booster 48 will be supplied by nitrogen supply line 41, is filled in the pressure setting
In pressure pan 44.
It is provided with supply valve on nitrogen supply line 41 between described booster 48 and described pressure pan 44
50, this supply valve 50 is used for opening and closing nitrogen supply line, to supply nitrogen to pressure pan.
After launching sealing container, when the pressure of the pressure gauge 54 being arranged on pressure pan declines, described supply
Valve 50 is opened so that be filled in pressure pan 44 with the pressure specifying by the nitrogen that booster supplies.
Here, be provided with the supply that opening and closing is connected with pressure pan 44 respectively before and after described pressure pan 44
Second valve 51 of pipe 42 and supply line 41 and the 3rd valve 52.Described second valve 51 and the 3rd valve 52 are used
In assisting the first valve 46 and supply valve 50, if necessary by manually or automatically opening and closing so that nitrogen to
Pressure pan 44 flows into or flows out from pressure pan 44.
Additionally, described energy supply unit 40 farther includes equal splenium, described equal splenium is used in transmitting close
The pressure making described transmitting tube 30 before envelope container 10 is consistent with the internal pressure of blast furnace 100.Blast furnace 100
Internal pressure be the high pressure of more than 4 air pressure.Therefore, when transmitting tube 30 is connected to blast furnace 100, high
Gas within stove 100 can be flow backwards by transmitting tube 30.In order to prevent the refluence of this gas, it is necessary to
Before launching sealing container 10, the internal pressure of described transmitting tube 30 is adjusted to and blast furnace 100
Internal pressure is consistent.
Described equal splenium includes: fills tank 61, is connected with described gas feed line, and gas is filled into described
Fill tank；Arm 62, is arranged between described filling tank 61 and described transmitting tube 30；Manifold valve 63,
It is arranged on described arm 62, be used for opening and closing arm 62；It with transmitting pipe valve 64, is arranged on described transmitting
It on pipe 30, is used for opening and closing transmitting tube 30.
In the present embodiment, described filling tank 61 is with the booster 48 being arranged on nitrogen supply line 41 even
Connect.By the driving of booster 48, to filling, tank 61 and/or pressure pan 44 are filled nitrogen.
It is provided with arm 62 and the confession that opening and closing respectively is connected with filling tank 61 before and after described filling tank 61
To the 5th valve 65 and the 6th valve 66 of line 41.Described 5th valve 65 and the 6th valve 66 are used for auxiliary branch line
Valve 63, if necessary by manually or automatically opening and closing, so that nitrogen flows into or from filling to filling tank 61
Tank 61 flows out.
Described arm 62 connects fills tank 61 and transmitting tube 30, supplies nitrogen to transmitting tube 30.Described
Arm 62 seals container 10 at the transmitting pipe valve 64 being arranged at transmitting tube 30 and carrying of transmitting tube 30
It is connected with transmitting tube 30 between position.Described transmitting tube 30 is further provided with for detecting transmitting tube 30
The pressure gauge 67 of internal pressure.
Thus, the manifold valve 63 being arranged on arm 62 can be controlled before launching sealing container 10 and set
Put the opening and closing launching pipe valve 64 at transmitting tube 30, thus supply nitrogen to the inside of transmitting tube 30, make
Pressure within transmitting tube 30 keeps consistent with the internal pressure of blast furnace 100.
Below, as follows to the procedure declaration removing sedimentary 210.
Being removed by of the sedimentary 210 of the present embodiment applies impact energy to sedimentary 210 makes deposition
The method that layer 210 destroys realizes.
In order to destroy sedimentary 210, first prepare to seal container 10, the inside note of described sealing container 10
Enter and have the gas generating material 20 generating gas.In the set-up procedure sealing container 10, operating personnel
Hold being used for igniting sealing in the gas generating material 20 of container 10 loads sealing container 10 and sealing
Device 10.
After sealing container 10 for producing impact energy is ready, as next step process, will seal
Container 10, to the internal emission of blast furnace 100, makes sealing container 10 inject the raceway zone 200 of blast furnace 100
Sedimentary 210 in.
In the present embodiment, in order to launch sealing container 10, carry in the inside of transmitting tube 30 to seal and hold
Device 10, and by carry seal container 10 transmitting tube 30 with on the air port 110 being arranged on blast furnace 100
Ajutage 120 connects.Described transmitting tube 30 can be with the observation window 122 being arranged on ajutage 120 front end
Connect, or be blown into spray gun 130 with the fine coal being arranged on ajutage 120 and be connected.
When transmitting tube 30 is arranged on observation window 122, the fine coal extending within ajutage 120 is made to be blown into
Spray gun 130 retreats laterally, in order to avoid the sealing container 10 launched and fine coal are blown between spray gun 130 generation
Interfere.
When needs utilize fine coal to be blown into spray gun 130 transmitting sealing container 10, transmitting tube 30 is arranged on
Fine coal is blown into the outside front ends of spray gun 130.
After transmitting tube 30 is connected with ajutage 120, connect injection elevated pressure nitrogen in the rear end of transmitting tube 30
The supply pipe 42 of gas.Described high pressure nitrogen produces for propelling the motive force sealing container 10.
So, complete for launch seal container 10 equipment installation after, by supply pipe 42 by height
Pressure nitrogen moment is supplied to transmitting tube 30, enabling launch the sealing container 10 being equipped on transmitting tube 30.
The sealing container 10 launched from transmitting tube 30 injects raceway zone 200 through ajutage 120, and is positioned at back
In sedimentary 210 on rear side of rotation district 200.
Additionally, seal container 10 in sedimentary 210 by the interior thermal initiation of blast furnace 100, thus remove and sink
Lamination 210.
Here, this minimizing technology is before launching described sealing container 10, by described transmitting tube 30 with
In the state of blast furnace 100 connects, enter to be about to the internal pressure of transmitting tube 30 be adjusted to in blast furnace 100
The consistent process of portion's pressure.
As shown in Figure 4, when opening the 4th valve 53 being arranged on nitrogen supply line 41 and drive booster
When 48, nitrogen is carried and is filled into the filling tank 61 connecting along supply line 41 and pressure pan 44.At this
In one filling process, the supply valve 50 being arranged on supply line 41 is opened.Second valve the 51st, the 3rd valve
52nd, the 5th valve 65 and the 6th valve 66 play booster action, keep beating in the state of device is properly functioning
Open state.Thus, nitrogen flows into and fills tank 61 and pressure pan 44.Additionally, be arranged on supply pipe 42
First valve 46 cuts out, thus blocks the outflow of nitrogen.And, it is arranged on the transmitting of described transmitting tube 30
Pipe valve 64 is closed equally with the manifold valve 63 being arranged on arm 62.
In this case, when the manifold valve 63 being arranged on arm 62 is opened, the nitrogen in tank 61 is filled
Gas flows into the inside of transmitting tube 30 by arm 62.Owing to flowing into the nitrogen within transmitting tube 30, launch
The internal pressure of pipe 30 increases.The internal pressure of transmitting tube 30 is by being arranged on the pressure gauge of transmitting tube 30
67 detections.When the internal pressure of transmitting tube 30 be gradually increased and with the raceway zone 200 within blast furnace 100
Pressure identical when, open the transmitting pipe valve 64 being arranged on transmitting tube 30.Even if described transmitting pipe valve 64
Being opened, the raceway zone 200 of blast furnace 100 connects with transmitting tube 30, but due to place at the same pressure,
The internal gas of blast furnace 100 also will not flow backwards to transmitting tube 30.When the internal pressure completing transmitting tube 30
After regulation, manifold valve 63 is closed and is moved by the nitrogen of arm 62 to block.
In the state of so having regulated the internal pressure of transmitting tube 30, confirm to be filled in pressure pan 44
Whether nitrogen reaches for launching the sufficient pressure sealing container 10.The pressure of pressure pan 44 can pass through
The pressure gauge 54 being arranged on pressure pan 44 detects.
After filling nitrogen with sufficient pressure in pressure pan 44, open and be arranged on the of supply pipe 42
One valve 46, to launch sealing container 10.It when the first valve 46 is opened, is filled in pressure pan 44
High pressure nitrogen is supplied to transmitting tube 30 by supplying pipe 42 moment.By being supplied to the high pressure of transmitting tube 30
Nitrogen, the sealing container 10 being equipped on transmitting tube 30 is released at a high speed, and is passed through the front end of transmitting tube 30
Internal emission to blast furnace 100.
Clash simultaneously from the container 10 that seals that transmitting tube 30 is launched with the raceway zone 200 of blast furnace 100
Inject the inside of raceway zone 200, and be positioned in the sedimentary 210 of raceway zone 200 rear end.
After launching sealing container 10, the first valve 46 cuts out immediately, to block the inside gas of blast furnace 100
Body is flow backwards by transmitting tube 30.
Inject the sealing container 10 in the sedimentary 210 within blast furnace 100, owing to being filled in sealing container
Gas generating material 20 within 10 reacts under the interior heat effect of blast furnace 100, is being internally generated
The gas of thousands of times of volumes.
Then, described sealing container 10 explodes under the bulbs of pressure effect of the gas that inside produces.Pass through
The expansion energy of gas and the explosive force sealing container 10, produce impact energy in sedimentary 210.Cause
This, the sedimentary 210 of raceway zone 200 is destroyed because of these impact energys and is removed.
As described above, it is illustrated that to illustrate the exemplary embodiment of the present invention, but those skilled in the art
Various deformation and other embodiments can be realized.This deformation and other embodiments are all considered and include
In appending claims, without departing from the real spirit or scope of the present invention.
Claims (23)
1. the device of the unburned sedimentary removing Blast Furnace Raceway, comprising:
Percussion mechanism, internal mobile to blast furnace outside blast furnace, after to being formed at the raceway zone of blast furnace
The unburned sedimentary of end applies impact energy, to destroy described unburned sedimentary,
Wherein, described percussion mechanism includes:
Seal container, for impact being applied to described sedimentary by blast；And
Gas generating material, is stored in described sealing container, is used for generating gas to ignite sealing container,
Wherein, described gas generating material is liquid oxygen or has mixing in potassium nitrate or sodium nitrate
There is the material of the structure of granulated sugar,
The device of the unburned sedimentary of described removal Blast Furnace Raceway farther includes: conveying device, uses
In making described percussion mechanism be positioned in unburned sedimentary,
Described conveying device includes: transmitting tube, is connected with internal raceway zone by the air port of blast furnace, and
Carry described sealing container in inside,
Described transmitting tube has the structure being connected with the observation window of the raceway zone being arranged on blast-furnace tuyere or peace
It is contained in and be arranged at the structure that the fine coal of blast-furnace tuyere is blown into spray gun.
2. the device of the unburned sedimentary of removal Blast Furnace Raceway according to claim 1, wherein,
Described gas generating material comprises lam-oil further.
3. the device of the unburned sedimentary of removal Blast Furnace Raceway according to claim 1, wherein,
Described gas generating material comprises the potassium nitrate of 70～80 weight % or sodium nitrate and 20～30 weight
The granulated sugar of %.
4. the device of the unburned sedimentary of removal Blast Furnace Raceway according to claim 2, wherein,
Described gas generating material comprises potassium nitrate or sodium nitrate, 20～30 weight % of 60～80 weight %
Granulated sugar and the lam-oil of 0～10 weight %.
5. the device of the unburned sedimentary of removal Blast Furnace Raceway according to claim 1, wherein,
Described sealing container is constituted by by the material of thermal melting in blast furnace.
6. the device of the unburned sedimentary of removal Blast Furnace Raceway according to claim 5, wherein,
Described sealing container is made up of aluminium, iron or stainless steel.
7. the device of the unburned sedimentary of removal Blast Furnace Raceway according to claim 1, wherein,
Described sealing container is internal for hollow, is formed in side for internally injecting gas generation material
The inlet of material, and the lid for sealing container can be combined with on described inlet removably
Structure.
8. the device of the unburned sedimentary of removal Blast Furnace Raceway according to claim 1, wherein,
Described sealing container be leading section, side be sharp-pointed structure.
9. the device of the unburned sedimentary of removal Blast Furnace Raceway according to claim 1, wherein,
Described conveying device farther includes:
Energy supply unit, is connected with described transmitting tube, and supply is for launching the energy of described sealing container.
10. the device of the unburned sedimentary of removal Blast Furnace Raceway according to claim 9, its
In,
Described energy supply unit includes:
Push rod, is used for propelling out described sealing container；With
Drive division, is used for making described push rod move forward,
Described energy supply unit is the structure utilizing push rod to propel out sealing container.
The device of the unburned sedimentary of 11. removal Blast Furnace Raceways according to claim 9, its
In,
Described energy supply unit is to described transmitting tube supply gas, and launches sealing appearance by gas pressure
The structure of device.
The device of the unburned sedimentary of 12. removal Blast Furnace Raceways according to claim 11, its
In, described gas is nitrogen or air.
The device of the unburned sedimentary of 13. removal Blast Furnace Raceways according to claim 9, its
In,
Described conveying device farther includes:
Gas-tight ring, along the inner peripheral surface setting of described transmitting tube, is close to described sealing container to keep gas
Close.
The device of the unburned sedimentary of 14. removal Blast Furnace Raceways according to claim 11, its
In,
Described energy supply unit includes:
Supply pipe, is connected with described transmitting tube；
Pressure pan, is connected with described supply pipe, and inside is filled with gas, supplies gases at high pressure to transmitting tube；
First valve, is arranged on described supply pipe, for opening and closing supply pipe；With
Booster, is arranged on described high pressure on tank connected gas feed line, for filling to pressure pan
Gas.
The device of the unburned sedimentary of 15. removal Blast Furnace Raceways according to claim 14, its
In,
Described energy supply unit farther includes:
Equal splenium, for making pressure and the blast furnace internal pressure one of described transmitting tube before launching sealing container
Cause.
The device of the unburned sedimentary of 16. removal Blast Furnace Raceways according to claim 15, its
In,
Described equal splenium includes:
Filling tank, being connected with described gas feed line, gas is filled into described filling tank；
Arm, is arranged between described filling tank and described transmitting tube；
Manifold valve, is arranged on described arm, is used for opening and closing arm；With
Launch pipe valve, be arranged on described transmitting tube, be used for opening and closing transmitting tube.
The method of 17. 1 kinds of unburned sedimentary removing Blast Furnace Raceway, comprising:
Impact energy is applied to the unburned sedimentary of the raceway zone rear end being formed at blast furnace, described to destroy
The step of unburned sedimentary,
Wherein, the step destroying described sedimentary includes:
Preparation process, prepares to be injected with the sealing container of the gas generating material for generating gas in inside；
Supplying step, described sealing container is transferred and to not to the unburned sedimentary of Blast Furnace Raceway
Burnt deposit layer applies impact energy；With
Blast step, makes sealing container explode by heat in blast furnace,
Wherein, described gas generating material is liquid oxygen or has mixing in potassium nitrate or sodium nitrate
There is the material of the structure of granulated sugar,
Described supplying step includes: carry step, is being connected with internal raceway zone by the air port of blast furnace
Transmitting tube on carry seal container,
Described transmitting tube has the structure being connected with the observation window of the raceway zone being arranged on blast-furnace tuyere or peace
It is contained in and be arranged at the structure that the fine coal of blast-furnace tuyere is blown into spray gun.
The method of the unburned sedimentary of 18. removal Blast Furnace Raceways according to claim 17, its
In,
Described gas generating material comprises lam-oil further.
The method of the unburned sedimentary of 19. removal Blast Furnace Raceways according to claim 17, its
In,
Described gas generating material comprises the potassium nitrate of 70～80 weight % or sodium nitrate and 20～30 weight
The granulated sugar of %.
The method of the unburned sedimentary of 20. removal Blast Furnace Raceways according to claim 18, its
In,
Described gas generating material comprises potassium nitrate or sodium nitrate, 20～30 weight % of 60～80 weight %
Granulated sugar and the lam-oil of 0～10 weight %.
The unburned of the 21. removal Blast Furnace Raceways according to any one in claim 17～20 sinks
The method of lamination, wherein,
Described supplying step farther includes:
Step of transmitting, supplies gases at high pressure to described transmitting tube, to propel out sealing container.
The method of the unburned sedimentary of 22. removal Blast Furnace Raceways according to claim 21, its
In,
Described gas is nitrogen or air.
The method of the unburned sedimentary of 23. removal Blast Furnace Raceways according to claim 21, its
In,
Described supplying step farther includes:
The pressure of described transmitting tube, for before described step of transmitting, is adjusted to and height by all pressure steps
The internal pressure of stove is consistent.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020110120176A KR101318385B1 (en) | 2011-11-17 | 2011-11-17 | Device and method for removal bird nest of raceway in blast furnace |
| KR10-2011-0120176 | 2011-11-17 | ||
| PCT/KR2012/008250 WO2013073776A1 (en) | 2011-11-17 | 2012-10-11 | Apparatus and method for removing uncombusted deposit layer from combustion zone of blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104053793A CN104053793A (en) | 2014-09-17 |
| CN104053793B true CN104053793B (en) | 2016-11-09 |
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ID=48429805
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280056785.3A Active CN104053793B (en) | 2011-11-17 | 2012-10-11 | Remove the device and method of the unburned sedimentary of Blast Furnace Raceway |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6055839B2 (en) |
| KR (1) | KR101318385B1 (en) |
| CN (1) | CN104053793B (en) |
| WO (1) | WO2013073776A1 (en) |
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|---|---|---|---|---|
| KR101673174B1 (en) * | 2015-12-23 | 2016-11-07 | 주식회사 포스코 | Device and method for removal bird nest of raceway in blast furnace |
| KR20180001860A (en) * | 2016-06-28 | 2018-01-05 | 주식회사 포스코 | Apparatus for manufacturing molten irons and method for manufacturing molten irons using the same |
| US10691211B2 (en) | 2018-09-28 | 2020-06-23 | Apple Inc. | Button providing force sensing and/or haptic output |
| US10599223B1 (en) | 2018-09-28 | 2020-03-24 | Apple Inc. | Button providing force sensing and/or haptic output |
| IT202000012658A1 (en) * | 2020-05-28 | 2021-11-28 | Bio Protect Group Srl | METHOD AND APPARATUS FOR HOT OR COLD CLEANING OF Slag FROM COMBUSTION USING AN EXPLOSIVE SHOCK WAVE |
| KR102354371B1 (en) * | 2021-04-05 | 2022-01-21 | 금수산업(주) | The burner structure for the incineration for the toxic gas combustion included in the combustion gas |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1148135A (en) * | 1995-10-13 | 1997-04-23 | 张声凯 | Method and internal circulation apparatus for low temp. liquid used as working fluid of engines |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5740301Y2 (en) * | 1978-09-27 | 1982-09-04 | ||
| FR2702221B1 (en) * | 1993-03-03 | 1995-04-28 | Air Liquide | Process for obtaining metal from the blast furnace or cupola. |
| JP3869477B2 (en) * | 1995-05-18 | 2007-01-17 | 新日本製鐵株式会社 | Blast furnace core drilling equipment |
| JPH10298617A (en) * | 1997-04-22 | 1998-11-10 | Sumitomo Metal Ind Ltd | Blast furnace operation method |
| JP3735184B2 (en) * | 1997-06-26 | 2006-01-18 | 新日本製鐵株式会社 | Blast furnace operation method |
| JP2000202619A (en) * | 1999-01-07 | 2000-07-25 | Tokyo Yogyo Co Ltd | Device for opening clogged hole of molten metal vessel |
| CA2443916C (en) * | 2001-04-12 | 2010-06-01 | Bang & Clean Gmbh | Method and device for cleaning combustion installations |
| DE502005004351D1 (en) * | 2005-12-03 | 2008-07-17 | Hne Technologie Ag | Process for the internal cleaning of industrial furnaces, bunkers and the like by bombardment with industrial cannons |
| KR20090018735A (en) * | 2007-08-18 | 2009-02-23 | 김성경 | Explosives, especially nitrate-sugar (powder), for “vibration controlled blasting” with low noise and vibration, no flame and no post-explosion |
-
2011
- 2011-11-17 KR KR1020110120176A patent/KR101318385B1/en active Active
-
2012
- 2012-10-11 WO PCT/KR2012/008250 patent/WO2013073776A1/en active Application Filing
- 2012-10-11 CN CN201280056785.3A patent/CN104053793B/en active Active
- 2012-10-11 JP JP2014542223A patent/JP6055839B2/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1148135A (en) * | 1995-10-13 | 1997-04-23 | 张声凯 | Method and internal circulation apparatus for low temp. liquid used as working fluid of engines |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101318385B1 (en) | 2013-10-15 |
| JP6055839B2 (en) | 2016-12-27 |
| WO2013073776A1 (en) | 2013-05-23 |
| KR20130054658A (en) | 2013-05-27 |
| CN104053793A (en) | 2014-09-17 |
| JP2015502456A (en) | 2015-01-22 |
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