CN106011368A - Slag blocking ball for converter - Google Patents
Slag blocking ball for converter Download PDFInfo
- Publication number
- CN106011368A CN106011368A CN201610600307.4A CN201610600307A CN106011368A CN 106011368 A CN106011368 A CN 106011368A CN 201610600307 A CN201610600307 A CN 201610600307A CN 106011368 A CN106011368 A CN 106011368A
- Authority
- CN
- China
- Prior art keywords
- ball
- slag
- skimming
- gas
- pushing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- C21C5/46—Details or accessories
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses a slag blocking ball for a converter. The slag blocking ball comprises a ball matrix (1) and a handle (3), wherein the handle is connected with the ball matrix; the surface of the ball matrix (1) is coated with a gas generating layer (2), which is 10cm to 20cm thick, in an enwrapping manner. According to the slag blocking ball for the converter, by adopting a method of coating the surface of the ball matrix of the slag blocking ball with a circle of substance which can generate gas at a high temperature, the effects of decreasing the occurrence rate of the stranding phenomenon of the slag blocking ball and suppressing the phenomenon that slag is entrapped by a tapping vortex are achieved.
Description
Technical field
The invention belongs to technical field of ferrous metallurgy, in particular it relates to a kind of coverter pig skimming ball.
Background technology
Multipair follow-up liquid steel refining is crossed in converter slag and steel product quality all adversely affects, can cause rephosphorization of molten steel,
The phenomenons such as refine white slag slagging is slow, inclusion content in melting steel is too much.The slag stopping method that converter current is put during steel has cunning
Dynamic tapping hole pushing off the slag, throwing skimming ball pushing off the slag, throwing slag retaining cone pushing off the slag, throwing scum rod pushing off the slag, pneumatic dreg blocking etc.,
The most most widely used slag stopping method is slip tapping hole pushing off the slag and throws skimming ball pushing off the slag, slip tapping hole pushing off the slag
Being applied in big-and-middle-sized converter, slip tapping hole pushing off the slag uses infrared ray identification slag technology, when detecting under beam
During slag, and when exceeding the slag inclusion percentage ratio set by system, now provided slide plate closing motion by computer system
Signal, is driven by hydraulic system and closes slip tapping hole, although under the minimizing that slip tapping hole pushing off the slag technology can be bigger
The quantity of slag, but the eddy current slag in tapping process cannot be suppressed, in order to improve tap, in latter stage of tapping, although bright
Know that molten steel eddy current can be involved in vessel slag slag in ladle, but also need to wait molten steel to turn off slip tapping hole after trying one's best out to the greatest extent；
Skimming ball, floating plug density in the middle of molten steel and slag, molten steel close to when going out to the greatest extent, skimming ball, floating plug quilt
Pour in tapping hole, produce pushing off the slag effect, owing to skimming ball, floating plug are the most stranded, often can not be by accurately
Being flushed in tapping hole, pushing off the slag hit rate is low, and about 80%, and skimming ball, floating plug also cannot suppress tapping process
In eddy current slag phenomenon.The method of interference eddy current slag is by installing near the furnace bottom position of tapping hole at present
The gas blowing devices such as air brick blowing gas or carry out Gas injection in Gas injection pipeline is stretched into converter in stove,
Play suppression eddy current or the effect that slag is blown open, but more complicated equipment need to be installed, and equipment is installed and safeguarded
Costly.
Summary of the invention
It is an object of the invention to, it is provided that a kind of coverter pig skimming ball, at slag ball matrix surface coating one circle energy
The method at high temperature producing the material of gas, can play reduction skimming ball stranded phenomenon incidence rate, suppression tapping whirlpool
The effect of stream slag phenomenon.
For reaching above-mentioned purpose, present invention employs following technical scheme:
A kind of coverter pig skimming ball, described skimming ball includes ball matrix 1 and the handle 3 being connected with ball matrix, described
The gas genetic horizon 2 that ball matrix 1 surface-coated parcel 10-20cm is thick.
Preferably, described gas genetic horizon 2 is 90% gas generating material and 10% binding agent system by mass percent
Become.
It is further preferred that described gas generating material is one or more in calcium carbonate, magnesium carbonate and brium carbonate.
It is further preferred that by mass percentage, described gas generating material includes calcium carbonate 30-40%, carbon
Acid magnesium 30-40% and brium carbonate 10-30%.
Preferably, described binding agent is the usual binders used for refractory material such as aluminous cement or aluminic acid silicon cement.
In the present invention, the mixture coating of gas generating material and binding agent is with on ball matrix, and coating thickness is 1-50cm,
Coat and be placed on compacting in fetal membrane, can use after demoulding maintenance.
Put steel when closing on end 1-2 minute, artificial or throw skimming ball of the present invention with Slag pushing-off vehicle and enter converter tapping
Near Kou, under tapping temperature, it is coated in the CaCO of ball matrix surface3、MgCO3、BaCO3Occur the most 1.
The most 3. formula decomposition reaction:
CaCO3=CaO+CO2↑ ①
MgCO3=MgO+CO2↑ ②
BaCO3=BaO+CO2↑ ③
The most 3. the CO of releasing is reacted2Gas rise, drive steel stream rise, formed gush phenomenon, gush phenomenon with
Tapping vortex phenomenon cancels each other, and has suppression eddy current and the effect that slag is blown open, and the gas of releasing can give skimming ball
Kinetic energy is provided, the incidence rate that skimming ball is stranded can be reduced, improve skimming ball pushing off the slag success rate.
In tapping process, skimming ball of the present invention can coordinate slide plate slag-blocking system to use to suppress eddy current, also
Can be used alone, i.e. pushing off the slag suppresses again eddy current.
In order to eliminate skimming ball pushing off the slag, slide plate pushing off the slag and the deficiency of interference eddy-current technique method of blowing, the present invention provides
A kind of method at slag ball matrix surface coating gas generating material, both can use cheap skimming ball to carry out
Pushing off the slag can provide the most again foam caused by reduction, plays the effect of interference tapping eddy current.
Advantages of the present invention
1, gas generating material releases a large amount of gases, provides kinetic energy to skimming ball, eliminates stranded phenomenon, improves
Skimming ball accurately arrives the success rate of tapping hole.
2, gas generating material releases a large amount of gases, drives steel stream to rise, forms gush phenomenon, play suppression
Eddy current and the effect that slag is blown open, reduce the lower quantity of slag.
3, compared to complicated furnace bottom gas blowing device or furnace gas injection tube duct device, at skimming ball table
Topcoating covers the method low price of gas generating material, and simple and practical, equipment investment is little.
Accompanying drawing explanation
Fig. 1 is the coverter pig skimming ball structure sectional view of the present invention.
Detailed description of the invention
With the drawings and specific embodiments, the present invention is further detailed explanation below.
Embodiment 1
As it is shown in figure 1, a kind of coverter pig skimming ball, described skimming ball includes ball matrix 1 and is connected with ball matrix
Handle 3, the gas genetic horizon 2 that described ball matrix 1 surface-coated parcel 1-50cm is thick.
Forming gas genetic horizon at ball matrix surface coating one circle gas generant, gas genetic horizon is by CaCO3、
MgCO3、BaCO3, aluminous cement 30%:30%:30%:10% mixing coating in proportion form, ball base diameter
30cm, gas generating material coating thickness 10cm.Utilize described skimming ball and slide plate pushing off the slag technology with the use of carrying out
Pushing off the slag, tap critical end 1 minute time, utilize pushing off the slag dolly to throw pushing off the slag bead of the present invention and enter tapping hole
Near, under the condition of high temperature, skimming ball produces gas, has the effect of suppression tapping eddy current.Production practices show, with
It is used alone slide plate pushing off the slag technology to compare, uses skimming ball and the slide plate pushing off the slag technology of surface-coated gas generating material
Carry out associating pushing off the slag, can averagely reduce the lower quantity of slag about 20% of tapping.
Embodiment 2
As it is shown in figure 1, a kind of coverter pig skimming ball, described skimming ball includes ball matrix 1 and is connected with ball matrix
Handle 3, the gas genetic horizon 2 that described ball matrix 1 surface-coated parcel 1-50cm is thick.
Forming gas genetic horizon at ball matrix surface coating one circle gas generant, gas genetic horizon is by CaCO3、
MgCO3、BaCO3, the 30%:40%:20%:10% mixing coating in proportion of aluminic acid silicon cement form, ball base diameter
35cm, gas generating material coating thickness 15cm.Utilize skimming ball of the present invention to carry out pushing off the slag, face in tapping
When boundary terminates 1 minute, utilize pushing off the slag dolly to throw described pushing off the slag bead and enter near tapping hole, under the condition of high temperature,
Producing gas, have the effect of suppression eddy current, the gas of generation provides kinetic energy to skimming ball, can eliminate stranded phenomenon.
Production practices show, compared with former skimming ball, use the skimming ball of surface-coated gas generating material can improve pushing off the slag
Success rate 10%, reduces the lower quantity of slag about 30% of tapping.
Embodiment 3
As it is shown in figure 1, a kind of coverter pig skimming ball, described skimming ball includes ball matrix 1 and is connected with ball matrix
Handle 3, the gas genetic horizon 2 that described ball matrix 1 surface-coated parcel 1-50cm is thick.
Forming gas genetic horizon at ball matrix surface coating one circle gas generant, gas genetic horizon is by CaCO3、
MgCO3、BaCO3, the 40%:40%:10%:10% mixing coating in proportion of aluminic acid silicon cement form, ball base diameter
40cm, gas generating material coating thickness 20cm.Utilize skimming ball of the present invention to carry out pushing off the slag, face in tapping
When boundary terminates 1 minute, utilize pushing off the slag dolly to throw described pushing off the slag bead and enter near tapping hole, under the condition of high temperature,
Producing gas, have the effect of suppression eddy current, the gas of generation provides kinetic energy to skimming ball, can eliminate stranded phenomenon.
Production practices show, compared with former skimming ball, use the skimming ball of surface-coated gas generating material can improve pushing off the slag
Success rate 10%, reduces the lower quantity of slag about 40% of tapping.
It should be noted last that, above example is only in order to illustrate technical scheme and unrestricted.Although
With reference to embodiment, the present invention is described in detail, it will be apparent to an ordinarily skilled person in the art that the present invention
Technical scheme modify or equivalent, without departure from the spirit and scope of technical solution of the present invention, it is equal
Should contain in the middle of scope of the presently claimed invention.
Claims (5)
1. a coverter pig skimming ball, described skimming ball includes ball matrix (1) and the handle being connected with ball matrix
(3), it is characterised in that the gas genetic horizon (2) that described ball matrix (1) surface-coated parcel 10-20cm is thick.
A kind of coverter pig skimming ball the most according to claim 1, it is characterised in that described gas genetic horizon (2)
It is 90% gas generating material by mass percent and 10% binding agent is made.
A kind of coverter pig skimming ball the most according to claim 2, it is characterised in that described gas generating material
For one or more in calcium carbonate, magnesium carbonate and brium carbonate.
A kind of coverter pig skimming ball the most according to claim 3, it is characterised in that by mass percentage,
Described gas generating material includes calcium carbonate 30-40%, magnesium carbonate 30-40% and brium carbonate 10-30%.
A kind of coverter pig skimming ball the most according to claim 2, it is characterised in that described binding agent is aluminic acid
Calcium cement or aluminic acid silicon cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610600307.4A CN106011368B (en) | 2016-07-27 | 2016-07-27 | A kind of coverter pig skimming ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610600307.4A CN106011368B (en) | 2016-07-27 | 2016-07-27 | A kind of coverter pig skimming ball |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106011368A true CN106011368A (en) | 2016-10-12 |
| CN106011368B CN106011368B (en) | 2018-02-16 |
Family
ID=57114276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610600307.4A Active CN106011368B (en) | 2016-07-27 | 2016-07-27 | A kind of coverter pig skimming ball |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106011368B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117845011A (en) * | 2023-12-22 | 2024-04-09 | 鞍钢股份有限公司 | Converter tapping slag blocking device and method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5831021A (en) * | 1981-08-19 | 1983-02-23 | Kawasaki Steel Corp | Slag outflow preventing method in case of charging |
| CN2522427Y (en) * | 2002-02-01 | 2002-11-27 | 宁开敏 | Ball-shape dregs baffle device |
| CN2887885Y (en) * | 2006-04-30 | 2007-04-11 | 周平 | Full homogeneous skimming ball for making steel in converter |
| CN201406448Y (en) * | 2009-05-19 | 2010-02-17 | 武汉武钢北湖冶金材料有限公司 | Homogenous slag-stopping ball used for tapping hole of converter |
| CN202954062U (en) * | 2012-11-30 | 2013-05-29 | 鞍钢股份有限公司 | Slag stopper |
| CN103691924A (en) * | 2013-12-17 | 2014-04-02 | 谢驰中 | Slag blocking body capable of avoiding casting slag inclusion and manufacturing method thereof |
| CN204111796U (en) * | 2014-09-02 | 2015-01-21 | 辽宁科技大学 | A kind of slag-blocking apparatus of coverter pig |
| CN105215342A (en) * | 2015-09-30 | 2016-01-06 | 江苏永钢集团有限公司 | A kind of for preventing the skimming ball of large bag vortex slag |
| CN205893313U (en) * | 2016-07-27 | 2017-01-18 | 山东钢铁股份有限公司 | Converter is with keeping off slag ball |
-
2016
- 2016-07-27 CN CN201610600307.4A patent/CN106011368B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5831021A (en) * | 1981-08-19 | 1983-02-23 | Kawasaki Steel Corp | Slag outflow preventing method in case of charging |
| CN2522427Y (en) * | 2002-02-01 | 2002-11-27 | 宁开敏 | Ball-shape dregs baffle device |
| CN2887885Y (en) * | 2006-04-30 | 2007-04-11 | 周平 | Full homogeneous skimming ball for making steel in converter |
| CN201406448Y (en) * | 2009-05-19 | 2010-02-17 | 武汉武钢北湖冶金材料有限公司 | Homogenous slag-stopping ball used for tapping hole of converter |
| CN202954062U (en) * | 2012-11-30 | 2013-05-29 | 鞍钢股份有限公司 | Slag stopper |
| CN103691924A (en) * | 2013-12-17 | 2014-04-02 | 谢驰中 | Slag blocking body capable of avoiding casting slag inclusion and manufacturing method thereof |
| CN204111796U (en) * | 2014-09-02 | 2015-01-21 | 辽宁科技大学 | A kind of slag-blocking apparatus of coverter pig |
| CN105215342A (en) * | 2015-09-30 | 2016-01-06 | 江苏永钢集团有限公司 | A kind of for preventing the skimming ball of large bag vortex slag |
| CN205893313U (en) * | 2016-07-27 | 2017-01-18 | 山东钢铁股份有限公司 | Converter is with keeping off slag ball |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117845011A (en) * | 2023-12-22 | 2024-04-09 | 鞍钢股份有限公司 | Converter tapping slag blocking device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106011368B (en) | 2018-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100560744C (en) | Process method for producing ultra-low phosphorus steel by molten steel external refining dephosphorization | |
| CN104694819A (en) | Production method for low-carbon low-silicon steel | |
| CN101096734A (en) | Electric arc furnace smelting stainless steel mother liquid steel slag foaming agent | |
| CN205893313U (en) | Converter is with keeping off slag ball | |
| CN107365890A (en) | Method for controlling inclusions in X80 pipeline steel | |
| CN103667581A (en) | Low-nitrogen SWR82B steel smelting method | |
| CN209974818U (en) | Device for modifying slag powder spraying and separating slag and steel during converter tapping | |
| CN106011368A (en) | Slag blocking ball for converter | |
| TWI295690B (en) | Verfahren zur erzeugung einer schaumschlacke auf hochchromhaltigen schmelzen in einem elektroofen | |
| CN114472825B (en) | Continuous casting method of non-calcium-treated low-carbon aluminum-killed phosphorus-containing steel | |
| CN102108432A (en) | Submerged arc slag of refining furnace | |
| CN110042187B (en) | Device for modifying slag powder spraying and separating slag steel during converter tapping and use method | |
| CN106755744A (en) | A kind of ultra-low-carbon steel RH refining furnace sulfur methods | |
| CN206359555U (en) | The vertical blow desulphurization spray gun of rotation | |
| CN112609042B (en) | Method for modifying slag in final casting stage of ladle with cover | |
| CN108384922A (en) | The smelting process of carbon constructional quality steel | |
| CN103008595A (en) | Process for rolling 170 mm specification of flaw detection satisfying steel plate with 300 mm section | |
| CN208717372U (en) | A kind of single-mouth refining furnace of smelting ultralow-carbon stainless steel | |
| CN106350636A (en) | Interstitial-free steel top slag modifying method | |
| CN206494948U (en) | Desulfurizing iron is auxiliary to blow agitating device | |
| CN206359556U (en) | Consumption-type molten iron desulphurization stirring device | |
| JPS5757816A (en) | Steel making method by composite top and bottom blown converter | |
| TW201339316A (en) | Steel manufacturing method | |
| CN205313599U (en) | Rifle head structure of converter top blowing oxygen flow is adjusted to double - circuit oxygen flow | |
| GB756429A (en) | Process for dephosphorizing a ferrous metal, for example pig iron |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |