CN106247353A - A kind of blast furnace gas diffusing ignition system - Google Patents
A kind of blast furnace gas diffusing ignition system Download PDFInfo
- Publication number
- CN106247353A CN106247353A CN201610643689.9A CN201610643689A CN106247353A CN 106247353 A CN106247353 A CN 106247353A CN 201610643689 A CN201610643689 A CN 201610643689A CN 106247353 A CN106247353 A CN 106247353A
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- blast furnace
- furnace gas
- regulation valve
- gas diffusing
- gas
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- 239000003034 coal gas Substances 0.000 claims abstract description 29
- 238000012544 monitoring process Methods 0.000 claims description 5
- 239000003245 coal Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000523 sample Substances 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 66
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q9/00—Pilot flame igniters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The open a kind of blast furnace gas diffusing ignition system of the present invention, including blast-furnace gas diffusing tower, it is characterized in that, the bottom of described blast-furnace gas diffusing tower connects blast furnace gas pipe, being provided with regulation valve I on blast furnace gas pipe, the tower top of described blast-furnace gas diffusing tower is provided with igniter burner, and igniter burner is connected to lighter and coal gas of converter pipe, being provided with regulation valve II on coal gas of converter pipe, regulation valve I, lighter and regulation valve II are connected with Iganition control system.Blast furnace gas diffusing ignition system of the present invention is only lighted a fire when blast furnace gas diffuses, and closes companion in time and burns the source of the gas of gas, effectively reduce companion and burn the consumption of gas after lighting a fire successfully, thus reduce cost greatly, increase economic efficiency, lower energy resource consumption, improve the feature of environmental protection.
Description
Technical field
The present invention relates to blast furnace gas diffusing technical field, particularly relate to a kind of blast furnace gas diffusing ignition system.
Background technology
In smelter, coal gas can be produced along with production.Such as in ironmaking, steel-making, produce during coking etc.
Coal gas enter pipe network through udst separation, pipe network coal gas most can carry out produce recycling, sub-fraction can be discharged
In air.Pipe network itself is i.e. transfer canal, is also storage device.If fruit part pipe network is without gas chamber UNICOM, then, pipe network
Pressure own can fluctuate, in order to maintain ductwork pressure constant at a model along with producing discharge coal gas and the change of coal gas user
In enclosing, usual pipe network can connect one or more gas bleeding system, and present metallurgy industry is all by fire by blast furnace gas
Flame enters air after lighting, reduce and pollute.
Blast furnace gas calorific value is low, it is impossible to directly light with high-voltage pulses device, is typically necessary companion and burns gas, and companion burns
Gas lighted by high-voltage pulses device after as ever-burning flame to the blast furnace gas that ignites.The igniting of existing blast furnace gas diffusing
The coke-stove gas generally using outsourcing burns gas as companion, and uses manual electronic to strike sparks, and armrest moves regulation and diffuses regulation valve
When carrying out coal gas diffusion, it is impossible to ensure stablizing of pipeline pressure well, simultaneously in order to prevent the dangerous situation lighted a fire not in time
Occurring, the mode of igniting is employing ever-burning flame, and which energy resource consumption is relatively big, the most energy-conservation the most not environmentally, production cost is high.
Summary of the invention
The technical assignment of the technical problem to be solved and proposition is to improve prior art, it is provided that a kind of
Blast furnace gas diffusing ignition system, solves blast furnace gas diffusing igniting in current technology and uses coke-stove gas to burn gas as companion,
And using the mode of ever-burning flame, energy resource consumption is big, not environmentally, the problem that production cost is high.
For solving above technical problem, the technical scheme is that
A kind of blast furnace gas diffusing ignition system, including blast-furnace gas diffusing tower, it is characterised in that described blast furnace gas
The bottom of diffusing tower connects blast furnace gas pipe, and blast furnace gas pipe is provided with regulation valve I, the tower top of described blast-furnace gas diffusing tower
It is provided with igniter burner, igniter burner is connected to lighter and coal gas of converter pipe, coal gas of converter pipe is provided with regulation valve II,
Regulation valve I, lighter and regulation valve II are connected with Iganition control system.Blast furnace gas diffusing ignition system of the present invention turns
Producer gas burns gas, low cost as companion, and its usage economy is more preferable, does not use the mode of ever-burning flame simultaneously, opens at regulation valve I
When carrying out blast furnace gas diffusing, then open regulation valve II coal gas of converter is entered in igniter burner, and by lighter point
Combustion so that blast furnace gas combustion, after enter air, reduce and pollute, use this kind of mode can effectively reduce companion and burn the consumption of gas
Consumption, thus reduce cost greatly, increase economic efficiency, lower energy resource consumption, improve the feature of environmental protection.
Further, described igniter burner is provided with 3 on the tower top of blast-furnace gas diffusing tower, and in circumference side
Upwards being uniformly distributed, improve Ignition Stability, blast furnace gas calorific value is low, it is ensured that effectively blast furnace gas can be lighted burning.
Further, described igniter burner is made up of gas jets of igniting, flame detecting probe and guarantor's flame cylinder, and simple in construction makes
Use good stability.
Further, described regulation valve I uses butterfly valve, and butterfly valve opening and closing element is a discoidal butterfly plate, in valve body
Axis around himself rotates, thus reaches to open and close or the purpose of regulation, changes the deflection angle of butterfly plate, can control medium
Flow, simple in construction, volume are little, lightweight, material consumption saves, and installation dimension is little, and switch rapidly, has good fluid and controls
Characteristic and closedown sealing property, regulation valve II uses electromagnetic valve, facilitates Iganition control system to control the break-make of coal gas of converter pipe.
Further, described igniter burner is additionally provided with thermocouple by temperature transmitter with Iganition control system even
Connect, monitor the temperature of igniter burner thus judge whether successful normal combustion of lighting a fire, it is to avoid occur that loss of ignition causes blast furnace
The situation of coal gas in line severe contamination air.
Further, described Iganition control system uses PLC software to realize automatically controlling, it is not necessary to Artificial Control, permissible
Control the consumption of coal gas of converter more accurately, it is achieved energy-saving and cost-reducing, reduce production cost.
Further, the step that automatically controls of described Iganition control system is: A, Iganition control system monitoring regulation valve I
Open and-shut mode；B, regulate valve I open time, Iganition control system opens the regulation valve II on coal gas of converter pipe starting ignition
Device is lighted a fire；C, the temperature regime of thermocouple return to Iganition control system, carry out secondary point when electric thermo-couple temperature is less than preset value
Fire；D, electric thermo-couple temperature close the regulation valve II on lighter and coal gas of converter pipe when exceeding preset value.Traditional blast furnace gas
Diffusing is to use PID module to be adjusted the regulating butterfly valve on blast furnace gas pipe, and each PID module is all with blast furnace coal
The pressure of gas does setup parameter, and blast-furnace gas pressure fluctuation is relatively big, controls if realizing igniting PID by house steward's gas pressure,
Ignition procedure frequent start-stop, will make field control more chaotic.Therefore the application carrys out linkage point by the opening and closing of monitoring regulation valve I
The start and stop of fire program, regulation valve I opens then starting ignition program, and butterfly valve cuts out and then cuts out ignition procedure, and field control is simple, easily
In realization, it is to avoid ignition procedure frequent start-stop, extension device service life.
Further, carry out the step cycle of regnition when described electric thermo-couple temperature is less than preset value and carry out until heat
Galvanic couple temperature exceedes preset value, is a cycle with 30 seconds.Occur light a fire unsuccessful situation time, be repeated igniting until
After lighting a fire successfully, thermocouple is heated to more than preset value temperature, it is to avoid occur that loss of ignition causes blast furnace gas in line seriously
Air-polluting situation, improves safety in utilization.
Further, the temperature preset value of described thermocouple is 150 DEG C, and suitable temperature is avoided too much consuming converter coal
Gas, reduces production cost.
Compared with prior art, the invention has the advantages that:
Blast furnace gas diffusing ignition system of the present invention is only lighted a fire when blast furnace gas diffuses, and lights a fire successfully
The rear source of the gas closing companion's burning gas in time, effectively reduces companion and burns the consumption of gas, thus reduce cost greatly, raising economy
Benefit, lowers energy resource consumption, improves the feature of environmental protection；Realize full-automatic chain igniting, be fully achieved objects under unattended condition, and can
With on-site manual, Central Control Room manual ignition, easy to use and flexible；Present configuration is simple, it is easy to accomplish, low cost of manufacture, warp
Ji efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the workflow diagram of Iganition control system.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
A kind of blast furnace gas diffusing ignition system disclosed in the embodiment of the present invention, it is achieved energy-saving and cost-reducing, utilizes coal gas of converter
Automatically lighting blast furnace gas for pyrophoric fuel medium, manipulation is convenient, low cost, and the feature of environmental protection is high.
As it is shown in figure 1, a kind of blast furnace gas diffusing ignition system, including blast-furnace gas diffusing tower 1, blast-furnace gas diffusing tower
The bottom of 1 connects blast furnace gas pipe 2, blast furnace gas pipe 2 is provided with regulation valve I6, regulation valve I6 and uses butterfly valve, convenient regulation
The flow of circulation, the tower top of blast-furnace gas diffusing tower 1 is provided with igniter burner 3, and igniter burner 3 is visited by gas jets of igniting, fire inspection
Head and guarantor's flame cylinder composition, igniter burner 3 is connected to lighter 4 and coal gas of converter pipe 5, coal gas of converter pipe 5 is provided with regulation
Valve II7, igniter burner 3 is provided with 3 on the tower top of blast-furnace gas diffusing tower 1, and is uniformly distributed in a circumferential direction, point
Being additionally provided with thermocouple 9 on baked wheaten cake mouth 3 to be connected with Iganition control system 8 by temperature transmitter 10, capital equipment is stainless
Steel making, possesses advantage anticorrosive, long-life, and regulation valve II7 uses electromagnetic valve, regulation valve I6, lighter 4 and regulation valve
II7 is connected with Iganition control system 8.After once igniter burner 3 catches fire, if blast-furnace gas diffusing tower 1 has blast furnace gas,
So blast-furnace gas diffusing tower 1 main burner will be lighted automatically, forms the big flame of about 4m.Burn near point after lighting a fire successfully
Thermocouple 9 temperature of mouth 3 can rise rapidly about 600 DEG C, according to electric thermo-couple temperature, Iganition control system 8 judges that diffusing igniting is
No success.
Diffuse igniter after transformation and there is on-site manual, the manual and automatic three kinds of control modes of Central Control Room, Non-follow control
During mode, can control room or with regard to cabinet complete manual single step igniting, flame sensing signal also on cabinet panel on the spot show；From
During dynamic control mode, can be automatically performed at control room and diffuse igniting, be fully achieved objects under unattended condition.
Iganition control system 8 uses PLC software to realize automatically controlling, and only lights a fire when blast furnace gas diffuses, point
Close companion after pyrogene merit in time and burn the source of the gas of gas, effectively reduce companion and burn the consumption of gas, thus reduce cost greatly.This
Embodiment carrys out the start and stop of chain ignition procedure by the opening and closing of monitoring regulation valve I, and regulation valve I opens then starting ignition program, butterfly
Valve cuts out and then cuts out ignition procedure, as in figure 2 it is shown, the step that automatically controls of Iganition control system 8 is: A, Iganition control system 8
The open and-shut mode of monitoring regulation valve I6；B, regulate valve I6 open time, Iganition control system 8 opens the tune on coal gas of converter pipe 5
Joint valve II7 initial igniter 4 are lighted a fire；C, the temperature regime of thermocouple 9 return to Iganition control system 8, and thermocouple 9 temperature is low
When preset value 150 DEG C, carry out regnition, and repeat the process of step C until the temperature of thermocouple 9 is more than 150 DEG C, with 30
Second is that a loop cycle is carried out；D, close lighter 4 and coal gas of converter pipe 5 when thermocouple 9 temperature exceedes preset value 150 DEG C
On regulation valve II7.
Table 1
| Sparking mode | Coal gas of converter consumption |
| Manual ever-burning flame | 210 sides/h |
| Automatic ignition | 100 sides/h |
Table 2
| Ignite gas medium | The blast-furnace gas diffusing tower suitability | Usage amount (is estimated) | Unit price (is estimated) | The moon expends |
| Blast furnace gas | Low cost but easily stop working, inapplicable | 0.08 yuan/m3 | ||
| Coal gas of converter | It is suitable for | 210 sides/h | 0.13 yuan/m3 | 7.86 ten thousand |
| Coke-stove gas | It is suitable for | 100 sides/h | 0.4 yuan/m3 | 8.64 ten thousand |
| Natural gas | Calorific value ratio turns coke-stove gas and doubles, and is suitable for | 80 sides/h | 2.88 yuan/m3 | 47.69 ten thousand |
Table 1 is that manual ever-burning flame is added up with autoignition fuel gas amount, and table 2 is combustion gas use cost, institute employing blast furnace own
Coal gas diffusion ignition system greatly reduces use cost, and reduces the consumption for the energy sources amount, reduces the pollution to environment.
Below it is only the preferred embodiment of the present invention, it is noted that it is right that above-mentioned preferred implementation is not construed as
The restriction of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, it is also possible to make some improvements and modifications, these change
Enter and retouch and also should be regarded as protection scope of the present invention.
Claims (9)
1. a blast furnace gas diffusing ignition system, including blast-furnace gas diffusing tower (1), it is characterised in that described blast furnace coal
The bottom of gas diffusing tower (1) connects blast furnace gas pipe (2), and blast furnace gas pipe (2) is provided with regulation valve I (6), described blast furnace coal
The tower top of gas diffusing tower (1) is provided with igniter burner (3), and igniter burner (3) is connected to lighter (4) and coal gas of converter pipe
(5), coal gas of converter pipe (5) is provided with regulation valve II (7), regulation valve I (6), lighter (4) and regulation valve II (7) and igniting
Control system (8) connects.
Blast furnace gas diffusing ignition system the most according to claim 1, it is characterised in that described igniter burner (3) exists
It is provided with 3 on the tower top of blast-furnace gas diffusing tower (1), and is uniformly distributed in a circumferential direction.
Blast furnace gas diffusing ignition system the most according to claim 1, it is characterised in that described igniter burner (3) by
Ignite gas jets, flame detecting probe and guarantor's flame cylinder composition.
Blast furnace gas diffusing ignition system the most according to claim 1, it is characterised in that described regulation valve I (6) uses
Butterfly valve, regulation valve II (7) uses electromagnetic valve.
Blast furnace gas diffusing ignition system the most according to claim 1, it is characterised in that on described igniter burner (3)
It is additionally provided with thermocouple (9) to be connected with Iganition control system (8) by temperature transmitter (10).
Blast furnace gas diffusing ignition system the most according to claim 5, it is characterised in that described Iganition control system
(8) PLC software is used to realize automatically controlling.
Blast furnace gas diffusing ignition system the most according to claim 6, it is characterised in that described Iganition control system
(8) the step that automatically controls is: the open and-shut mode of A, Iganition control system (8) monitoring regulation valve I (6)；B, regulation valve I (6)
When opening, Iganition control system (8) opens regulation valve II (7) on coal gas of converter pipe (5) initial igniter (4) igniting；C、
The temperature regime of thermocouple (9) returns to Iganition control system (8), carries out secondary point when thermocouple (9) temperature is less than preset value
Fire；D, thermocouple (9) temperature close regulation valve II (7) on lighter (4) and coal gas of converter pipe (5) when exceeding preset value.
Blast furnace gas diffusing ignition system the most according to claim 7, it is characterised in that described thermocouple (9) temperature
Carry out less than the step cycle carrying out regnition during preset value until thermocouple (9) temperature exceedes preset value, with 30 seconds for one
The individual cycle.
Blast furnace gas diffusing ignition system the most according to claim 7, it is characterised in that the temperature of described thermocouple (9)
Degree preset value is 150 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610643689.9A CN106247353B (en) | 2016-08-08 | 2016-08-08 | A kind of blast furnace gas diffusing ignition system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610643689.9A CN106247353B (en) | 2016-08-08 | 2016-08-08 | A kind of blast furnace gas diffusing ignition system |
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| CN106247353A true CN106247353A (en) | 2016-12-21 |
| CN106247353B CN106247353B (en) | 2018-07-06 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677142A (en) * | 2017-10-18 | 2018-02-09 | 江苏永钢集团有限公司 | Sintering ignition furnace fuel control system |
| CN109340788A (en) * | 2018-11-01 | 2019-02-15 | 临涣焦化股份有限公司 | A kind of coke oven emission igniter kept burning day and night |
| CN109357284A (en) * | 2018-10-19 | 2019-02-19 | 北京首钢国际工程技术有限公司 | A kind of intelligent ignition device and method for open flame combustion nozzle |
| CN110345508A (en) * | 2019-07-15 | 2019-10-18 | 中国科学技术大学 | A kind of oil gas igniter |
| CN112017391A (en) * | 2020-08-03 | 2020-12-01 | 柳州钢铁股份有限公司 | Flame fire extinguishing detection method for blast furnace gas diffusion chimney |
| CN112375865A (en) * | 2020-11-30 | 2021-02-19 | 江苏欧亚环保科技有限公司 | Centralized control diffusion ignition device and ignition method thereof |
| CN112413614A (en) * | 2020-12-04 | 2021-02-26 | 上海煤气第一管线工程有限公司 | Automatic diffusion ignition device |
| CN114542982A (en) * | 2022-02-25 | 2022-05-27 | 圣戈班管道系统有限公司 | Automatic switching and interlocking ignition control method and system for double-path gas source of blast furnace gas diffusing tower |
| CN115682026A (en) * | 2022-10-31 | 2023-02-03 | 山东莱钢永锋钢铁有限公司 | Pneumatic ignition structure suitable for blast furnace coal |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677142A (en) * | 2017-10-18 | 2018-02-09 | 江苏永钢集团有限公司 | Sintering ignition furnace fuel control system |
| CN109357284A (en) * | 2018-10-19 | 2019-02-19 | 北京首钢国际工程技术有限公司 | A kind of intelligent ignition device and method for open flame combustion nozzle |
| CN109340788A (en) * | 2018-11-01 | 2019-02-15 | 临涣焦化股份有限公司 | A kind of coke oven emission igniter kept burning day and night |
| CN110345508A (en) * | 2019-07-15 | 2019-10-18 | 中国科学技术大学 | A kind of oil gas igniter |
| CN112017391A (en) * | 2020-08-03 | 2020-12-01 | 柳州钢铁股份有限公司 | Flame fire extinguishing detection method for blast furnace gas diffusion chimney |
| CN112375865A (en) * | 2020-11-30 | 2021-02-19 | 江苏欧亚环保科技有限公司 | Centralized control diffusion ignition device and ignition method thereof |
| CN112413614A (en) * | 2020-12-04 | 2021-02-26 | 上海煤气第一管线工程有限公司 | Automatic diffusion ignition device |
| CN114542982A (en) * | 2022-02-25 | 2022-05-27 | 圣戈班管道系统有限公司 | Automatic switching and interlocking ignition control method and system for double-path gas source of blast furnace gas diffusing tower |
| CN115682026A (en) * | 2022-10-31 | 2023-02-03 | 山东莱钢永锋钢铁有限公司 | Pneumatic ignition structure suitable for blast furnace coal |
| CN115682026B (en) * | 2022-10-31 | 2023-07-25 | 山东莱钢永锋钢铁有限公司 | Pneumatic ignition structure suitable for blast furnace coal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106247353B (en) | 2018-07-06 |
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