CN207512199U - 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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- CN207512199U CN207512199U CN201721582348.1U CN201721582348U CN207512199U CN 207512199 U CN207512199 U CN 207512199U CN 201721582348 U CN201721582348 U CN 201721582348U CN 207512199 U CN207512199 U CN 207512199U
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Abstract
The utility model is related 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 connect with self-draining arrangement, and discharges ponding by self-draining arrangement, seals coal gas.The beneficial effects of the utility model are：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, blast furnace stabilization is promoted safely to run, extends blast furnace service life, increases economic efficiency.
Description
Technical field
The utility model is related to blast-furnace equipment technical field, more particularly to a kind of draining system for discharging State of Blast Furnace internal water accumulation
System.
Background technology
Blast furnace ironmaking is the major processes of ironmaking technology, and the furnace life of a domestic large and medium-sized blast furnace generation is mostly 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 raised 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, large and medium-sized blast furnace
Production Life reduce significantly, the safety in production of serious threat blast furnace causes huge economic loss to enterprise.
The service life in furnace life of a blast furnace generation is usually calculated with the blast furnace crucibe service life, cupola well cohesion hydrops state molten iron and slag
(1450~1550 DEG C), blast furnace crucibe liner are refractory material, and typically charcoal refractory brick, 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 is there are two main source, one is air port and more than cooling
Equipment breakage leak, blast-furnace tuyere equipment working environment is severe, and part cooling water leakage enters refractory brick and set 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 is carried with crude fuel
Moisture all vaporize at high temperature, partly with coal gas escape into furnace shell or cooling equipment after condense, due to cupola well be located at height
The bottom of stove, liquid water are accumulated in along furnace shell or cooling equipment in cupola well refractory material under the effect of gravity.
Blast furnace crucibe can be run steadily in the long term forms stable heat transfer system dependent on cooling equipment with refractory material,
If moisture enters in cupola well refractory material, on the one hand, moisture chemically reacts at high temperature with cupola well carbon refractory, invades
Lose cupola well refractory material；On the other hand, it is 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
The life of the blast furnace is shortened in brick fuel abnormal erosion；When moisture evaporating capacity is larger, when the pressure in cupola well refractory material reaches a certain peak value
It is possible that pushing the refractory material displacement of cupola well part, there is molten iron channel in cupola well, causes the serious accidents such as blast furnace crucibe burn-through.
Utility model content
In view of the foregoing deficiencies of prior art, the purpose of this utility model is to provide a kind of discharge State of Blast Furnace inner products
The drainage system of water for discharging the moisture accumulated in Wall of Blast Furnace in time, promotes Wall of Blast Furnace cooling efficiency, it is resistance to reduce furnace wall
The rate that fiery material is etched.
In order to achieve the above objects and other related objects, the utility model provides a kind of draining 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 stretches into Wall of Blast Furnace and collects State of Blast Furnace internal water accumulation, described
The other end of discharge pipe line is connect with self-draining arrangement, and discharges ponding by self-draining arrangement, seals coal gas.
The beneficial effects of the utility model are：It, will be in production process in State of Blast Furnace by setting discharge pipe line on furnace wall
Ponding discharge in time, and cause coal gas be sealed in State of Blast Furnace, promote blast furnace stabilization safely runs, extend blast furnace use
Service life increases economic efficiency.
Further, the discharge pipe line includes the main sewer being connect 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 connect by branch drain with main sewer, and logical
Cross the ponding in the drain stub collection State of Blast Furnace.
Further, the branch drain is equipped 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 the manifold valves one being mounted on main sewer, two and of manifold valves
Water trap, the ponding in the main sewer enter discharge product in water trap by manifold valves one and manifold valves two successively
Water seals coal gas.
Further, the water trap sealed set, and equipped with discharge outlet, the discharge outlet is connect with sewage disposal device.
Advantageous effect using above-mentioned further scheme is：By setting drain stub and branch drain convenient in State of Blast Furnace
The ponding of each position is transported to main sewer and converges centralized processing in time, reduces pipeline installation difficulty；Branch pipe valve is set, just
It is automatically closed or opens in realization, separate branch drain and main sewer, convenient for the maintenance of drain stub；By setting header valve
Men Yihe manifold's valve two is easy to implement automation mechanized operation and easy access or replaces water trap；Water trap is set using sealing
It puts, is easy to implement ponding discharge, avoids gas leak.
Further, the self-draining arrangement includes the manifold valves one being mounted on main sewer and manifold valves two,
The U-shaped water seal arrangement for being capable of impounded seal is equipped between the manifold valves one and manifold valves two.
Further, the water seal arrangement is equipped with the liquid level gauge for measuring liquid level, the manifold valves one and header valve
According to the liquid level signal of liquid level gauge draining is opened and closed, and limitation coal gas is coordinated to leak with water seal arrangement in door two.
Advantageous effect using above-mentioned further scheme is：When liquid level reaches preset high liquid level in liquid level gauge, close
Manifold valves one open manifold valves two, and drainage system starts draining；When liquid level reaches preset liquid level, header valve is closed
Door two opens manifold valves one, and drainage system starts water storage；U-shaped water seal arrangement is set, and coal gas overflows after preventing draining.
Further, the water inlet end of the drain stub passes through the preformed hole on Wall of Blast Furnace to collect the ponding in State of Blast Furnace,
Or the water inlet end of drain stub is shared with other apertures, stretches into Wall of Blast Furnace the ponding collected in State of Blast Furnace, it is applied widely,
Installation operation is simple and convenient, and the aperture that Wall of Blast Furnace itself is made full use of to be equipped with is increased 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 adequately in time,
Security performance is improved, is prolonged the service life.
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 utility model embodiment is set
There is structure diagram during water trap；
Fig. 2 is shown as the enlarged diagram of part A in Fig. 1；
Fig. 3 is shown as the planar development signal of the drainage system of the discharge State of Blast Furnace internal water accumulation of the utility model embodiment
Figure；
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 utility model embodiment is set
There is structure diagram during water seal arrangement；
Fig. 5 is shown as the structure diagram of the utility model embodiment one；
Fig. 6 is shown as the structure diagram of the utility model embodiment two.
Piece mark explanation
1 refractory brick；
2 joint sealing materials；
3 cooling equipment；
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 manifold valves one；
14 manifold valves two；
15 liquid level gauges；
16 water seal arrangements.
Specific embodiment
Illustrate the embodiment of the utility model below by way of specific specific example, those skilled in the art can be by this theory
Content disclosed by bright book understands other advantages and effect of the utility model easily.The utility model can also be by addition
Different specific embodiments are embodied or practiced, and the various details in this specification can also be based on different viewpoints with answering
With carrying out various modifications or alterations under the spirit without departing from the utility model.
It is it should be noted that cited such as " on ", " under ", "left", "right", " centre " and " one " etc. in this specification
Term is merely convenient to understanding rather than to limit the enforceable range of the utility model, the change of relativeness for narration
Or adjustment, in the case where changing technology contents without essence, when being also considered as the enforceable scope of the utility model.
Before the utility model embodiment is described in detail, first the application environment of the utility model is retouched
It states.The technology of the utility model is mainly the field of blast-furnace equipment being applied in ironmaking technology, is especially applied in State of Blast Furnace
Drainage system field.The utility model is to solve in process of production, and the moisture in State of Blast Furnace enters in cupola well refractory material, makes
Refractory material is easily etched, the technical issues of blast furnace service life is short, security performance is low.In the utility model, fire resisting
Material is refractory brick or indefinite form joint sealing material etc., by setting drainage system, even if State of Blast Furnace inner furnace wall is continuous in production process
Ponding is generated, State of Blast Furnace internal water accumulation also can be timely discharged by drainage system, ponding is avoided to enter the fire resisting of blast furnace crucibe
In material, refractory material is caused to generate gap, by reducing ponding in real time, reduce the rate that refractory material is etched, extend high
The service life of stove.
As shown in Figure 1 to Figure 3, the drainage system of the discharge State of Blast Furnace internal water accumulation of the utility model embodiment, including at least
One group of 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 with from
Dynamic drainage arrangement connection, and by discharging moisture after self-draining arrangement progress ponding separation, coal gas continues to stay in drainpipe
In road or State of Blast Furnace.
As shown in Figure 1 to Figure 3, blast furnace is cylinder-like structure, Wall of Blast Furnace include the furnace shell 6 set gradually from outside to inside,
Equipment 3 and refractory material are cooled down, in the utility model, refractory material includes joint sealing material 2 and refractory brick 1, and joint sealing material 2 is located at cold
But between equipment 3 and refractory brick 1, cooling equipment 3 can be cooling wall or some other equipment with refrigerating function.State of Blast Furnace
Interior molten iron and slag is contacted with refractory brick 1, and the ponding mixture accumulated in State of Blast Furnace in process of production, which is generally concentrated at, to be filled out
The region of sewing 2, ponding mixing includes coal gas, vapor for generating under the high temperature conditions etc., if the moisture in joint sealing material 2 can not
Discharge in time, 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 connect with self-draining arrangement and at least one
It stretches into Wall of Blast Furnace and reaches 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 connect with main sewer 9, and branch drain 8 is equipped with branch pipe valve 7, branch pipe valve 7 for hand-operated valve or motor-driven valve or
Pneumatic operated valve or hydraulic operated valve etc., selection setting according to demand, to realize artificial unlatching or remote opening on the spot, side easy to operate
Just.Wherein, the water inlet end of drain stub 5 contacts after sequentially passing through furnace shell 6, cooling equipment 3 with joint sealing material 3, and ponding is at its own
Gravity and pressure effect under, enter in drain stub 5, automatic row entered using 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 service life 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 manifold valves 1, manifold valves 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 manifold valves 1 and manifold valves 2 14 carries out ponding separation.10 sealed set of water trap,
And equipped with discharge outlet 11, discharge outlet 11 is connect 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 by discharge outlet 11 in sewage disposal device, and coal gas continues to stay in draining
In pipeline and State of Blast Furnace, coal gas is avoided to leak, 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 manifold valves 1, liquid level gauge 15 and manifold valves 2 14 including being sequentially arranged on main sewer 9, liquid level gauge 15 and total
It is equipped 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 manifold valves 1
Realize that coal gas and water detach by water seal arrangement 16 afterwards, then water is discharged to sewage disposal device using manifold valves 2 14
In.Wherein, water seal arrangement 16 is the U-tube road continuously bent, in the utility model, passes through a positive U-tube road and one
Inverted U pipeline joins end to end to form water seal arrangement so that water seal arrangement 16 is accumulated always ponding, coal gas is avoided to leak, liquid level
Meter 15 is arranged on the water inlet end of water seal arrangement 16, and for detecting the liquid level in water seal arrangement 16, manifold valves 2 14 set water seal
The water outlet of device 16.When liquid level reaches preset high liquid level in liquid level gauge 15, close manifold valves 1, isolation coal gas and
The ponding of 9 water inlet end of main sewer opens manifold valves 2 14, the moisture accumulated in discharge water seal arrangement 16, the moisture of discharge
It is sent into sewage disposal device；When liquid level reaches preset low liquid level, manifold valves 2 14 are closed, open manifold valves one
13, drainage system starts water storage.
Wherein, the manifold valves 1 in self-draining arrangement and manifold valves 2 14 are hand-operated valve or motor-driven valve or gas
The combination of any one or arbitrary two kinds of valves in the dynamic valves such as valve or hydraulic operated valve, specific choice type are set according to demand.
Self-draining arrangement setting manifold valves 1 and manifold valves two are opened or are remotely opened on the spot convenient for selection according to demand is artificial
It opens, realizes the automation mechanized operation of valve opening or closing, convenient for periodically discharging accumulation moisture, while effectively avoid coal gas
It leaks, improves 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, setting caliber with
And installation position can be configured with demand as the case may be, fully timely to discharge the ponding in State of Blast Furnace, be kept away
Exempt from the corrosion that moisture causes refractory material in State of Blast Furnace.
Illustrate that specific mounting means of the discharge pipe line on Wall of Blast Furnace enumerates following implementation to further fairly set out
Example, but mounting means is not limited only to following embodiment.
Embodiment one：
As shown in Fig. 1 to Fig. 3, Fig. 5, the water inlet end of drain stub 5 is shared with other apertures, is stretched into Wall of Blast Furnace and is collected
Ponding in State of Blast Furnace, other apertures can be thermometer hole or grout hole of installation refractory material thermocouple 4 etc., make full use of
Workload is reduced in ready-made aperture.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
Sequentially pass through furnace shell 6, cooling equipment 3, joint sealing material 2 are stretched into refractory brick 1, when drain stub 5 and thermocouple 4 share aperture,
Drain stub 5 is set on thermocouple 4, and is sequentially passed through furnace shell 6, cooled down at the arrival joint sealing material 2 of equipment 3, and drain stub 5 is fixed
On Wall of Blast Furnace.The one end of drain stub 5 far 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 5 inside of drain stub, realizes ponding conveying.In the present embodiment, branch drain 8 is DN25
Steel pipe, the branch pipe valve 7 on branch drain 8 are DN25 ball valves, are collected by about 27 branch drains 8 and are sent into main sewer 9,
Main sewer 9 is DN40 steel pipes, and the manifold valves 1 and manifold valves 2 14 on main sewer 9 are ball valve, water trap 10
Installation position will be less than all branch drains, water trap 10 can be set on the ground, after installation is complete, branch pipe valve 7,
Manifold valves 1 and manifold valves 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 passes through the preformed hole on Wall of Blast Furnace to collect in State of Blast Furnace
Ponding, during installation, if do not have available hole on Wall of Blast Furnace, directly drain stub 5 is inserted into drilling on Wall of Blast Furnace,
Or the preformed hole in Wall of Blast Furnace setting, drain stub 5 pass through furnace shell 6, cooling equipment 3 to reach at joint sealing material 2, drain stub 5
One end far 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 connect with main sewer 9, and the discharge ends of main sewer 9 are equipped with header valve
Door 1, liquid level gauge 15, water seal arrangement 16 and manifold valves 2 14, the coal gas and moisture of 9 water inlet end of main sewer pass through successively
Manifold valves 1 realize that coal gas and moisture detach using water seal arrangement 16, and coal gas stays in main sewer 9 or State of Blast Furnace
Interior, moisture is discharged by manifold valves 2 14, is avoided coal gas and is leaked, and improves security performance, and be conducive to concentrate in ponding
Storage periodically discharge, it is simple to operate.
The utility model by Wall of Blast Furnace the simple drainage system of setting structure constantly discharge blast fumance mistake
The ponding generated in Cheng Zhonglu, avoids ponding from entering in the refractory material of Wall of Blast Furnace, has been effectively promoted the steady of blast furnace safety
Fixed operation, extends the service life of blast furnace, increases economic efficiency.
The above embodiments are only illustrative of the principle and efficacy of the utility model, new not for this practicality is limited
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications completed under refreshing and technological thought or change, should be covered by the claim of the utility model.
Claims (10)
1. a kind of 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
It connects, and ponding is discharged by self-draining arrangement, seal coal gas.
2. a kind of 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 connect 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 connect by branch drain with main sewer, and collect State of Blast Furnace by the drain stub
Interior ponding.
3. a kind of 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 passes through the preformed hole on Wall of Blast Furnace to collect the ponding in State of Blast Furnace or drain stub and other holes on furnace wall
Mouth shares the ponding collected in State of Blast Furnace.
4. a kind of 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 equipped with branch pipe valve.
5. a kind of 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.
6. a kind of 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 manifold valves one, manifold valves two and the water trap that are mounted on main sewer, the product in the main sewer
Water enters water trap by manifold valves one and manifold valves two successively.
7. a kind of 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 equipped with the discharge outlet for draining.
8. a kind of 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 manifold valves one being mounted on main sewer and manifold valves two, the manifold valves one and manifold valves two
Between be equipped with and be capable of the U-shaped water seal arrangement of impounded seal.
9. a kind of 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 equipped with for measure the liquid level gauge of liquid level, the manifold valves one and manifold valves two according to the liquid level signal of liquid level gauge into
Row opening and closing draining, and limitation coal gas is coordinated to leak with water seal arrangement.
10. a kind of 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 setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721582348.1U CN207512199U (en) | 2017-11-23 | 2017-11-23 | A kind of drainage system for discharging State of Blast Furnace internal water accumulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721582348.1U CN207512199U (en) | 2017-11-23 | 2017-11-23 | A kind of drainage system for discharging State of Blast Furnace internal water accumulation |
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| CN207512199U true CN207512199U (en) | 2018-06-19 |
Family
ID=62540059
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721582348.1U Active CN207512199U (en) | 2017-11-23 | 2017-11-23 | A kind of drainage system for discharging State of Blast Furnace internal water accumulation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107805678A (en) * | 2017-11-23 | 2018-03-16 | 中冶赛迪工程技术股份有限公司 | A kind of drainage system for discharging State of Blast Furnace internal water accumulation |
| 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 |
-
2017
- 2017-11-23 CN CN201721582348.1U patent/CN207512199U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107805678A (en) * | 2017-11-23 | 2018-03-16 | 中冶赛迪工程技术股份有限公司 | A kind of drainage system for discharging State of Blast Furnace internal water accumulation |
| CN107805678B (en) * | 2017-11-23 | 2023-03-14 | 中冶赛迪工程技术股份有限公司 | Drainage system for discharging accumulated water in blast furnace |
| 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 |
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