CN107805678A - A kind of drainage system for discharging State of Blast Furnace internal water accumulation - Google Patents
A kind of drainage system for discharging State of Blast Furnace internal water accumulation Download PDFInfo
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- CN107805678A CN107805678A CN201711182660.6A CN201711182660A CN107805678A CN 107805678 A CN107805678 A CN 107805678A CN 201711182660 A CN201711182660 A CN 201711182660A CN 107805678 A CN107805678 A CN 107805678A
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- blast furnace
- valve
- house steward
- drainage system
- internal water
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/14—Discharging devices, e.g. for slag
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The present invention relates to blast-furnace equipment technical field, more particularly to a kind of drainage system for discharging State of Blast Furnace internal water accumulation.Including at least one set of discharge pipe line, one end of the discharge pipe line stretches into Wall of Blast Furnace and collects State of Blast Furnace internal water accumulation, and the other end of the discharge pipe line is connected with self-draining arrangement, and discharges ponding by self-draining arrangement, seals coal gas.The beneficial effects of the invention are as follows：By setting discharge pipe line on furnace wall, the ponding being accumulated in blast furnace production process in stove is discharged in time, and coal gas is sealed in State of Blast Furnace, promotes blast furnace is stable safely to run, extends blast furnace service life, increase economic efficiency.
Description
Technical field
The present invention relates to blast-furnace equipment technical field, more particularly to a kind of drainage system for discharging State of Blast Furnace internal water accumulation.
Background technology
Blast furnace ironmaking is the major processes of ironmaking technology, and the furnace life of a domestic big-and-middle-sized blast furnace generation is more in 10- at present
About 15 years, external such as German, developed country of a Japan blast furnace generation furnace life was generally above and below 15-20.Newly-built or overhaul
One seat height stove cost is huge, and significantly affects the performance of enterprises.Recent year foreign countries blast furnace frequently occurs the accident of hearth breakout
And by the elevated puzzlement of cupola well brick fuel temperature anomaly, some blast furnaces are even gone into operation 1 year just to be burnt by 2 years, big-and-middle-sized blast furnace
Production Life reduce significantly, the safety in production of serious threat blast furnace, huge economic loss is caused to enterprise.
The life-span in furnace life of a blast furnace generation is generally calculated with the blast furnace crucibe life-span, cupola well cohesion hydrops state molten iron and slag
(1450~1550 DEG C), blast furnace crucibe liner are refractory material, typically carbonaceous refractory brick, and refractory brick huyashi-chuuka (cold chinese-style noodles) sets cooling by water
Wall.In process of production, the ponding in blast furnace crucibe refractory material has two main sources, one is the cooling of air port and the above
Equipment breakage leak, blast-furnace tuyere equipment working environment is severe, and part cooling water leakage is set into refractory brick with cooling after breakage
Standby gap, is accumulated in refractory material；The second is the supersaturated moisture that blast furnace gas carries, blast furnace air carries with crude fuel
Moisture all vaporize at high temperature, condensed after partly escaping into furnace shell or cooling device with coal gas, due to cupola well positioned at height
The bottom of stove, aqueous water accumulate in cupola well refractory material under gravity along furnace shell or cooling device.
Blast furnace crucibe can be run steadily in the long term forms stable heat transfer system dependent on cooling device and refractory material,
If moisture enters in cupola well refractory material, on the one hand, moisture chemically reacts with cupola well carbon refractory at high temperature, invades
Lose cupola well refractory material；On the other hand, vaporized after moisture is heated, huge pressure is formed in the space of furnace wall inner sealing, is pushed away
Dynamic furnace wall or cooling wall deformation so that gap is formed between cooling wall and refractory material, cupola well heat transfer system is destroyed, causes cupola well
Brick fuel abnormal erosion, shorten the life of the blast furnace；When moisture evaporating capacity is larger, when the pressure in cupola well refractory material reaches a certain peak value
It is possible to promote the displacement of cupola well part refractory material, molten iron passage occurs in cupola well, causes the serious accidents such as blast furnace crucibe burn-through.
The content of the invention
In view of the above the shortcomings that prior art, it is an object of the invention to provide a kind of discharge State of Blast Furnace internal water accumulation
Drainage system, for discharging the moisture accumulated in Wall of Blast Furnace in time, Wall of Blast Furnace cooling effectiveness is lifted, reduces furnace wall fire proofed wood
Expect the speed being etched.
In order to achieve the above objects and other related objects, the present invention provides a kind of draining system for discharging State of Blast Furnace internal water accumulation
System, including at least one set of discharge pipe line, one end of the discharge pipe line stretch into Wall of Blast Furnace and collect State of Blast Furnace internal water accumulation, the row
The other end of water lines is connected with self-draining arrangement, and discharges ponding by self-draining arrangement, seals coal gas.
The beneficial effects of the invention are as follows：By setting discharge pipe line on furnace wall, by the product in production process in State of Blast Furnace
Water is discharged in time, and coal gas is sealed in State of Blast Furnace, promotes blast furnace is stable safely to run, and is extended blast furnace and is used the longevity
Life, increases economic efficiency.
Further, the discharge pipe line includes the main sewer being connected with self-draining arrangement and at least one is stretched into height
Stove furnace wall reaches the drain stub of refractory material in stove, and every drain stub is connected by branch drain with main sewer, and logical
The ponding crossed in the drain stub collection State of Blast Furnace.
Further, the branch drain is provided with branch pipe valve.
Further, the self-draining arrangement is arranged on the discharge ends of the main sewer.
Further, the self-draining arrangement includes house steward's valve one, the and of house steward's valve two being arranged on main sewer
Water trap, the ponding in the main sewer enter discharge product in water trap by house steward's valve one and house steward's valve two successively
Water, seal coal gas.
Further, the water trap sealed set, and discharge outlet is provided with, the discharge outlet is connected with sewage disposal device.
It is using the above-mentioned further beneficial effect of scheme：By setting drain stub and branch drain to be easy in State of Blast Furnace
The ponding of each position is transported to main sewer and converged in time to be focused on, and reduces pipeline installation difficulty；Branch pipe valve is set, just
Turned off or on automatically in realizing, separate branch drain and main sewer, be easy to the maintenance of drain stub；By setting header valve
House steward's Men Yihe valve two, it is easy to implement automation mechanized operation, and easy access or replacing water trap；Water trap is set using sealing
Put, be easy to implement ponding discharge, avoid gas leak.
Further, the self-draining arrangement includes the house steward's valve one and house steward's valve two being arranged on main sewer,
The U-shaped water seal arrangement for being capable of impounded seal is provided between house steward's valve one and house steward's valve two.
Further, the water seal arrangement is provided with the liquid level gauge for being used for measuring liquid level, house steward's valve one and header valve
Draining is opened and closed according to the liquid level signal of liquid level gauge in door two, and coordinates limitation coal gas to leak with water seal arrangement.
It is using the above-mentioned further beneficial effect of scheme：When liquid level reaches default high level in liquid level gauge, close
House steward's valve one, house steward's valve two is opened, drainage system starts draining；When liquid level reaches preset liquid level, header valve is closed
Door two, house steward's valve one is opened, drainage system starts water storage；U-shaped water seal arrangement is set, prevents draining from terminating rear coal gas and overflowing.
Further, the water inlet end of the drain stub collects the ponding in State of Blast Furnace through the preformed hole on Wall of Blast Furnace,
Or the water inlet end of drain stub shares with other apertures, the ponding collected in State of Blast Furnace is stretched into Wall of Blast Furnace, it is applied widely,
Installation operation is simple and convenient, the aperture for making full use of Wall of Blast Furnace itself to be provided with, increases economic efficiency.
Further, multigroup discharge pipe line is set along Wall of Blast Furnace circumferencial direction, multiple drainings of every group of discharge pipe line
Short tube is set along Wall of Blast Furnace circumferencial direction and/or short transverse so that and the moisture in State of Blast Furnace can be discharged sufficiently in time,
Security performance is improved, is increased the service life.
Brief description of the drawings
The self-draining arrangement that Fig. 1 is shown as the drainage system of the discharge State of Blast Furnace internal water accumulation of the embodiment of the present invention is provided with row
Structural representation during hydrophone；
Fig. 2 is shown as the enlarged diagram of local A in Fig. 1；
Fig. 3 is shown as the planar development schematic diagram of the drainage system of the discharge State of Blast Furnace internal water accumulation of the embodiment of the present invention；
The self-draining arrangement that Fig. 4 is shown as the drainage system of the discharge State of Blast Furnace internal water accumulation of the embodiment of the present invention is provided with water
Structural representation during seal apparatus；
Fig. 5 is shown as the structural representation of the embodiment of the present invention one；
Fig. 6 is shown as the structural representation of the embodiment of the present invention two.
Piece mark explanation
1 refractory brick；
2 joint sealing materials；
3 cooling devices；
4 thermocouples；
5 drain stubs；
6 furnace shells；
7 branch pipe valves；
8 branch drains；
9 main sewers；
10 water traps；
11 discharge outlet；
12 sealing flanges；
13 house steward's valves one；
14 house steward's valves two；
15 liquid level gauges；
16 water seal arrangements.
Embodiment
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through specific realities different in addition
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.
It is it should be noted that cited such as " on ", " under ", "left", "right", " centre " and " one " etc. in this specification
Term, understanding for narration is merely convenient to, and is not used to limit the enforceable scope of the present invention, the change of its relativeness or tune
It is whole, in the case where changing technology contents without essence, when being also considered as the enforceable category of the present invention.
Before the embodiment of the present invention is described in detail, first the application environment of the present invention is described.The present invention
Technology be mainly be applied to ironmaking technology in field of blast-furnace equipment, be especially applicable to State of Blast Furnace inner water drainage system field.
The present invention is that solve in process of production, and the moisture in State of Blast Furnace enters in cupola well refractory material so that the easy quilt of refractory material
Corrode, the technical problem that blast furnace service life is short, security performance is low.In the present invention, refractory material is refractory brick or indefinite form
Joint sealing material etc., by setting drainage system, even if State of Blast Furnace inner furnace wall constantly produces ponding in production process, it can also pass through row
Water system timely discharges State of Blast Furnace internal water accumulation, avoids ponding from entering in the refractory material of blast furnace crucibe, causes refractory material to produce
Raw gap, by reducing ponding in real time, the speed that refractory material is etched is reduced, extends the service life of blast furnace.
As shown in Figure 1 to Figure 3, the drainage system of the discharge State of Blast Furnace internal water accumulation of the embodiment of the present invention, including at least one set
Discharge pipe line, one end of discharge pipe line stretch into Wall of Blast Furnace and collect State of Blast Furnace internal water accumulation, the other end of discharge pipe line and automatic row
Water installations connect, and discharge moisture after carrying out ponding separation by self-draining arrangement, coal gas continue to stay in discharge pipe line or
In State of Blast Furnace.
As shown in Figure 1 to Figure 3, blast furnace is cylinder-like structure, furnace shell 6 that Wall of Blast Furnace includes setting gradually from outside to inside,
Cooling device 3 and refractory material, in the present invention, refractory material include joint sealing material 2 and refractory brick 1, and joint sealing material 2 is set positioned at cooling
Standby between 3 and refractory brick 1, cooling device 3 can be cooling wall or some other has the equipment of refrigerating function.In State of Blast Furnace
Molten iron and slag contact with refractory brick 1, and the ponding mixture of accumulation is generally concentrated at joint sealing material 2 in State of Blast Furnace in process of production
Region, ponding mixing includes caused coal gas, vapor etc. under the high temperature conditions, if the moisture in joint sealing material 2 can not be timely
Discharge, moisture is easily accessible in refractory brick 1, under high temperature action, refractory brick 1 easily burn into deformation, displacement.
As shown in Figure 1 to Figure 3, discharge pipe line includes the main sewer 9 being connected with self-draining arrangement and at least one
Stretch into Wall of Blast Furnace and reach the drain stub 5 for collecting State of Blast Furnace internal water accumulation in stove at refractory material, every drain stub 5 passes through row
Water branch pipe 8 is connected with main sewer 9, and branch drain 8 is provided with branch pipe valve 7, branch pipe valve 7 be hand-operated valve or motor-driven valve or
Pneumatic operated valve or hydraulic operated valve etc., according to demand selection are set, to realize artificial unlatching or remote opening on the spot, side simple to operate
Just.Wherein, the water inlet end of drain stub 5 contacts after sequentially passing through furnace shell 6, cooling device 3 with joint sealing material 3, and ponding is at its own
Gravity and pressure effect under, enter in drain stub 5, then automatic row is entered by branch drain 8, main sewer 9
Realize that coal gas is separated from water in water installations.Moisture is discharged by drain stub 5, reduces the speed that refractory brick 1 is etched, and extension makes
With life-span and the performance of raising blast furnace steady operation.
As shown in Figure 1 to Figure 3, self-draining arrangement is arranged on the discharge ends of main sewer 9, self-draining arrangement include according to
Secondary house steward's valve 1, house steward's valve 2 14 and water trap 10 on the main sewer 9, ponding in main sewer 9 according to
The secondary water trap 10 that enters after house steward's valve 1 and house steward's valve 2 14 carries out ponding separation.The sealed set of water trap 10,
And discharge outlet 11 is provided with, discharge outlet 11 is connected with sewage disposal device, periodically can discharge moisture by discharge outlet 11.Water trap
10 realize the separation of coal gas and moisture, and moisture is discharged into sewage disposal device by discharge outlet 11, and coal gas continues to stay in draining
In pipeline and State of Blast Furnace, avoid coal gas from leaking, improve security performance.
As shown in figure 4, self-draining arrangement can also use another structure, concrete structure is as follows, Auto-drainage dress
Put house steward's valve 1, liquid level gauge 15 and house steward's valve 2 14 including being sequentially arranged on main sewer 9, liquid level gauge 15 and total
It is provided between tube valve 2 14 and is capable of the water seal arrangement 16 of impounded seal, the ponding in main sewer 9 passes through house steward's valve 1
Realize that coal gas and water separate by water seal arrangement 16 afterwards, then water is discharged to sewage disposal device by house steward's valve 2 14 again
In.Wherein, water seal arrangement 16 is the U-tube road continuously bent, in the present invention, passes through a positive U-tube road and an inverted U
Pipeline joins end to end to form water seal arrangement so that water seal arrangement 16 is accumulated all the time ponding, avoids coal gas from leaking, and liquid level gauge 15 is set
The water inlet end in water seal arrangement 16 is put, for detecting the liquid level in water seal arrangement 16, house steward's valve 2 14 sets water seal arrangement 16
Water side.When liquid level reaches default high level in liquid level gauge 15, house steward's valve 1 is closed, isolates coal gas and draining is total
The ponding of the water inlet end of pipe 9, house steward's valve 2 14 is opened, discharge the moisture of accumulation in water seal arrangement 16, the moisture feeding of discharge is dirty
In water treatment facilities；When liquid level reaches default low liquid level, house steward's valve 2 14 is closed, opens house steward's valve 1, draining
System starts water storage.
Wherein, house steward's valve 1 in self-draining arrangement and house steward's valve 2 14 are hand-operated valve or motor-driven valve or gas
The combination of any one or any two kinds of valves in the dynamic valve such as valve or hydraulic operated valve, specifically chosen type are set according to demand.
Self-draining arrangement sets house steward's valve 1 and house steward's valve two to be easy to select according to demand manually to open or remotely open on the spot
Open, realize the automation mechanized operation of valve opening or closing, be easy to periodically discharge accumulation moisture, while effectively avoid coal gas
Leak, improve security performance.
As shown in Figure 1 to Figure 3, the group number of discharge pipe line selects to set according to demand, more when setting multigroup discharge pipe line
Group discharge pipe line is set along Wall of Blast Furnace circumferencial direction, i.e., discharge pipe line is set round Wall of Blast Furnace.Also, every group of discharge pipe line
Multiple drain stubs 5 can only along Wall of Blast Furnace circumferencial direction set, or only along Wall of Blast Furnace short transverse set, or
Be uniformly provided with drain stub 5 on Wall of Blast Furnace circumferencial direction and short transverse, the setting quantity of drain stub 5, set caliber with
And set location can be configured with demand as the case may be, fully timely to discharge the ponding in State of Blast Furnace, keep away
Exempt from the corrosion that moisture causes refractory material in State of Blast Furnace.
Following implementation is enumerated in order to further fairly set out specific mounting means of the explanation discharge pipe line on Wall of Blast Furnace
Example, but mounting means is not limited only to following examples.
Embodiment one：
As shown in Fig. 1 to Fig. 3, Fig. 5, the water inlet end of drain stub 5 shares with other apertures, stretches into Wall of Blast Furnace and collects
Ponding in State of Blast Furnace, other apertures can be the thermometer hole of installation refractory material thermocouple 4, or grout hole etc., make full use of
Ready-made aperture, reduce workload.When drain stub 5 and thermocouple 4 share aperture, the cooling of the huyashi-chuuka (cold chinese-style noodles) setting of joint sealing material 2
Equipment 3 is cooling wall, is the furnace shell 6 made by steel plate on the outside of cooling wall, blast furnace crucibe is configured with branched thermocouple 4, thermocouple 4
Furnace shell 6, cooling device 3, joint sealing material 2 is sequentially passed through to stretch into refractory brick 1, when drain stub 5 and thermocouple 4 share aperture,
Drain stub 5 is set on thermocouple 4, and sequentially pass through furnace shell 6, cooling device 3 reach joint sealing material 2 at, drain stub 5 is fixed
On Wall of Blast Furnace.The one end of drain stub 5 away from Wall of Blast Furnace is sealed by sealing flange, branch drain 8 and draining
Short tube 5 is fixedly connected, and is connected with the inside of drain stub 5, realizes that ponding conveys.In the present embodiment, branch drain 8 is DN25
Steel pipe, the branch pipe valve 7 on branch drain 8 is DN25 ball valves, is collected by about 27 branch drains 8 and is sent into main sewer 9,
Main sewer 9 is DN40 steel pipes, and the house steward's valve 1 and house steward's valve 2 14 on main sewer 9 are ball valve, water trap 10
Set location to be less than all branch drains, water trap 10 can be set on the ground, after installation, branch pipe valve 7,
House steward's valve 1 and house steward's valve 2 14 maintain a normally open state under normal production status, and the ponding in State of Blast Furnace passes sequentially through
Enter self-draining arrangement after drain stub 5, branch drain 8, main sewer 9, finally discharged by discharge outlet 11.
Embodiment two：
As shown in Figure 4 and Figure 6, the water inlet end of drain stub 5 is collected in State of Blast Furnace through the preformed hole on Wall of Blast Furnace
Ponding, during installation, if there is no available hole on Wall of Blast Furnace, the direct drilling insertion drain stub 5 on Wall of Blast Furnace,
Or the preformed hole set in Wall of Blast Furnace, drain stub 5 are reached at joint sealing material 2 through furnace shell 6, cooling device 3, drain stub 5
One end away from Wall of Blast Furnace is sealed by sealing flange 12, and the side of drain stub 5 is welded with branch drain 8, branch drain 8
Upper setting branch pipe valve 7, multiple branch drains 8 collect to be connected with main sewer 9, and the discharge ends of main sewer 9 are provided with header valve
Door 1, liquid level gauge 15, water seal arrangement 16 and house steward's valve 2 14, the coal gas and moisture of the water inlet end of main sewer 9 pass through successively
House steward's valve 1, then realize that coal gas and moisture separate by water seal arrangement 16, coal gas stays in main sewer 9 or State of Blast Furnace
Interior, moisture is discharged by house steward's valve 2 14, is avoided coal gas and is leaked, and improves security performance, and be advantageous to concentrate in ponding
Storage periodically discharge, it is simple to operate.
The present invention by Wall of Blast Furnace the simple drainage system of setting structure constantly discharge in blast furnace production process
Caused ponding in stove, avoid ponding from entering in the refractory material of Wall of Blast Furnace, be effectively promoted the stable fortune of blast furnace safety
OK, the service life of blast furnace is extended, is increased economic efficiency.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (10)
- A kind of 1. drainage system for discharging State of Blast Furnace internal water accumulation, it is characterised in that：Including at least one set of discharge pipe line, the draining One end of pipeline stretches into Wall of Blast Furnace and collects State of Blast Furnace internal water accumulation, and the other end and the self-draining arrangement of the discharge pipe line connect Connect, and ponding is discharged by self-draining arrangement, seal coal gas.
- A kind of 2. drainage system for discharging State of Blast Furnace internal water accumulation according to claim 1, it is characterised in that：The drainpipe Road includes the main sewer being connected with self-draining arrangement and at least one is stretched into Wall of Blast Furnace and reaches refractory material in stove Drain stub, every drain stub are connected by branch drain with main sewer, and collect State of Blast Furnace by the drain stub Interior ponding.
- A kind of 3. drainage system for discharging State of Blast Furnace internal water accumulation according to claim 2, it is characterised in that：The draining is short The water inlet end of pipe collects the ponding in State of Blast Furnace, or drain stub and other holes on furnace wall through the preformed hole on Wall of Blast Furnace Mouth shares the ponding collected in State of Blast Furnace.
- A kind of 4. drainage system for discharging State of Blast Furnace internal water accumulation according to claim 2, it is characterised in that：The draining branch Pipe is provided with branch pipe valve.
- A kind of 5. drainage system for discharging State of Blast Furnace internal water accumulation according to claim 2, it is characterised in that：The automatic row Water installations are arranged on the discharge ends of the main sewer.
- A kind of 6. drainage system for discharging State of Blast Furnace internal water accumulation according to claim 5, it is characterised in that：The automatic row Water installations include house steward's valve one, house steward's valve two and the water trap being arranged on main sewer, the product in the main sewer Water enters water trap by house steward's valve one and house steward's valve two successively.
- A kind of 7. drainage system for discharging State of Blast Furnace internal water accumulation according to claim 6, it is characterised in that：The water trap Sealed set limits gas leak, and provided with the discharge outlet for draining.
- A kind of 8. drainage system for discharging State of Blast Furnace internal water accumulation according to claim 5, it is characterised in that：The automatic row Water installations include the house steward's valve one and house steward's valve two being arranged on main sewer, house steward's valve one and house steward's valve two Between be provided with and be capable of the U-shaped water seal arrangement of impounded seal.
- A kind of 9. drainage system for discharging State of Blast Furnace internal water accumulation according to claim 8, it is characterised in that：The water seal dress Put provided with the liquid level gauge for being used to measure liquid level, house steward's valve one and house steward's valve two enter according to the liquid level signal of liquid level gauge Row opening and closing draining, and coordinate limitation coal gas to leak with water seal arrangement.
- A kind of 10. drainage system for discharging State of Blast Furnace internal water accumulation according to claim 2, it is characterised in that：It is multigroup described Discharge pipe line is set along Wall of Blast Furnace circumferencial direction, and multiple drain stubs of every group of discharge pipe line are along Wall of Blast Furnace circumferencial direction And/or short transverse is set.
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| CN201711182660.6A CN107805678B (en) | 2017-11-23 | 2017-11-23 | Drainage system for discharging accumulated water in blast furnace |
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| CN201711182660.6A CN107805678B (en) | 2017-11-23 | 2017-11-23 | Drainage system for discharging accumulated water in blast furnace |
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Cited By (4)
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| CN109735672A (en) * | 2019-03-15 | 2019-05-10 | 中冶赛迪工程技术股份有限公司 | A kind of blast furnace crucibe catchments water discharge method and device |
| CN111893231A (en) * | 2020-05-29 | 2020-11-06 | 广东韶钢松山股份有限公司 | Blast furnace hearth and casting long-life lifting method thereof |
| CN113337656A (en) * | 2021-06-29 | 2021-09-03 | 广东韶钢松山股份有限公司 | Drainage method for hearth during blow-in period after cast repair in blast furnace |
| CN115449575A (en) * | 2022-08-26 | 2022-12-09 | 北京首钢股份有限公司 | Water collecting and draining method after integral casting of blast furnace hearth |
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| CN109735672A (en) * | 2019-03-15 | 2019-05-10 | 中冶赛迪工程技术股份有限公司 | A kind of blast furnace crucibe catchments water discharge method and device |
| CN109735672B (en) * | 2019-03-15 | 2024-02-23 | 中冶赛迪工程技术股份有限公司 | Water collecting and draining method and device for blast furnace hearth |
| CN111893231A (en) * | 2020-05-29 | 2020-11-06 | 广东韶钢松山股份有限公司 | Blast furnace hearth and casting long-life lifting method thereof |
| CN113337656A (en) * | 2021-06-29 | 2021-09-03 | 广东韶钢松山股份有限公司 | Drainage method for hearth during blow-in period after cast repair in blast furnace |
| CN113337656B (en) * | 2021-06-29 | 2022-04-12 | 广东韶钢松山股份有限公司 | Drainage method for hearth during blow-in period after cast repair in blast furnace |
| CN115449575A (en) * | 2022-08-26 | 2022-12-09 | 北京首钢股份有限公司 | Water collecting and draining method after integral casting of blast furnace hearth |
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