CN107250386A - The blowing rifle component for manufacturing and refining for metal - Google Patents
The blowing rifle component for manufacturing and refining for metal Download PDFInfo
- Publication number
- CN107250386A CN107250386A CN201680010727.5A CN201680010727A CN107250386A CN 107250386 A CN107250386 A CN 107250386A CN 201680010727 A CN201680010727 A CN 201680010727A CN 107250386 A CN107250386 A CN 107250386A
- Authority
- CN
- China
- Prior art keywords
- oxygen
- blowing
- component according
- rifle component
- blowing rifle
- Prior art date
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- Pending
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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
-
- 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
- C21C5/4606—Lances or injectors
- C21C5/4613—Refractory coated lances; Immersion lances
-
- 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
- C21C5/30—Regulating or controlling the blowing
- C21C5/305—Afterburning
-
- 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
- C21C5/30—Regulating or controlling the blowing
- C21C5/35—Blowing from above and through the bath
-
- 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
- C21C5/4606—Lances or injectors
-
- 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
- C21C5/4606—Lances or injectors
- C21C2005/4626—Means for cooling, e.g. by gases, fluids or liquids
-
- 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
- C21C5/4673—Measuring and sampling devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The present invention relates to it is a kind of for metal manufacture and refine blowing rifle component, its be developed with control clinker formation and aoxidize, and reactor thermal capacitance and maintain operating condition during charging and blowing.The component has two groups of gas vents for determining two blowing conditions in its underpart.First group is made up of the oxygen stream nozzle with scaling type, and mainly ensures oxidation reaction and convey basic solid material, mainly calcium oxide, and dephosphorization is carried out for primary slags formation and in finally operation refining stage.Second group during each blowing stage by having the secondary jet of various functions to constitute, One function, when process starts, oxygen is sprayed into as second-time burning agent, oxygen and the reaction of carbon monoxide produced by power stream, and second function is to promote the reaction with carbon by increasing oxygen stream speed, is promoted in the starting stage slag melting, with the oxidation of one of the element in last increase metal bath iron, to reduce the phosphorus content of last operation refining stage.
Description
Technical field
The present invention relates to a kind of blowing rifle component for manufacturing and refining for metal, relate more specifically to a kind of for steel
Manufacture and the blowing rifle component of refining, it is developed to control the formation and oxidation of clinker, the thermal capacitance of reactor and to charging
With the protection of blowing operating condition.
Background technology
BOF stoves (oxygen top-blown converter) are the hydrostatic columns of bottom lock, and it has has for loading liquid in top tape
The upper end for being shaped as taper type of the big opening of the state pig iron and waste material, referred to as " mouth ", and is referred to as the small side of " cast passage "
Opening, the molten steel produced at the end of preliminary refining is removed by side opening.
In order to protect smelting furnace metal shell, using the coating with fire brick layer so as to the appearance at a high temperature of about 1700 DEG C
Receive molten bath.
Converting process includes performing series of steps, since charging.Groove tank is from 45 degree of angles inclined vertically；Waste material is borrowed
Help passage to be loaded into groove tank, one is used for preparing to be placed into the container of the waste material into smelting furnace；It is molten waste material is put into
After in stove, liquid pig iron is loaded into.Then groove tank is tilted back into upright position to allow oxygen to pass through the oxygen that vertically moves
Rifle is blown into.
Oxygen rifle is water cooling, and oxygen outlet nozzle is housed in its end.Nozzle assembly and its geometry determine spray
The structure of rifle nozzle.Oxygen rifle follows the height mode related to metal bath during blowing, and is referred to as " spray gun-molten bath distance ".
Purpose is to make spray gun all the time near weld pool surface to accelerate reaction speed, but, as close to the molten bath table for being subjected to high temperature
Face.On the other hand, closer to weld pool surface, oxygen jet injection is deeper, thus accelerates reaction speed.
The process causes the agitation of liquid metal and clinker, these liquid metals and clinker be thrown to the top of smelting furnace and
It may solidify, and may also be thrown away from smelting furnace on spray gun and along furnace wall.In addition to oxygen, spray gun can also be in liquid
Other gases or its mixture with oxygen are used in state metal manufacturing process.
In order to obtain the blowing rifle with long service life, it must be cooled down in this case by water circulation.
The temperature of lance outer surface is high and is far above the boiling point of water.If the metal to be processed is steel, temperature is more than 1700 DEG C, in institute
Spray gun is immersed in the batch of material for having processing and is referred to as in the mixture of the molten bath of " emulsion ", slag and gas.
Converting process is made up of four different steps：Igniting, slag making, decarburization and oxidation for design temperature.In order to
Start the process, spray gun is reduced to the height that batch of material can be made to light a fire, i.e., make to occur in any element in molten bath by oxygen blast
Oxidation.Slag making step is immediately begun to after batch of material igniting.The second step lasts about 3 to 5 minutes, also referred to as the first rank of decarburization
Section.It is characterized in that silicon almost complete oxidation and manganese vigorous oxidation, and decarbonization rate is with the reduction of both constituent contents
Increase.In the initial step of slag making, all slag formers, such as quick lime, dolomite lime and raw burn dolomite are added.
The addition of slag making materials is carried out usually using the storage silo above converter.The supply logistics of these silos
It is complicated, including several stages, including the material that in bulk or big packed (big bag) is transported is received by highway or railway.It is in bulk
During transport, material is unloaded in transfer silo, and it is usually located at the opening below means of transport；From storage silo (wait
Silo material) is measured by hopper and shifts to conveyer belt, and the function of the conveyer belt is that material is directed into height 25 to 50
At the top of converter bearing structure between rice, storage silo is located at herein；, can be with according to the layout of every company during rising
Occur conveyer belt transposition to change the direction of material.At top, material reaches the lorry for being referred to as dump device.Then by material
Storage silo is directed to, usual quantity is 4 to 15.There are vibrator or feeder below storage silo, weighed receiving
After order, material is moved in storage silo, the silo of storing is provided with the scale adjusted for weight.Weight is waiting suitable
When time add converter.If using big packaging, it can open or be sling with overhead crane in transhipment silo, and directly
Unloaded in storage silo.In both cases, in every kind of material transposition, pollution effect is significantly and needs are in dedusting system
It is substantial amounts of on system to invest to contain.
These materials can also be added by spray gun, or by be present in smelting furnace refractory bottom or base position it is porous
Or pressurization passageway is added.Addition opportunity depends on the type for the steel to be produced and changed, but generally follows identical order.With
Accelerated oxidation occurs, and silicon is converted into silica, needs quickly to add alkaline reagent in this case, especially is finding to criticize
The lime added immediately after shots fire.Because material is granular, it is heated, reaction and dissolving are required for time, Ran Houfa
Raw effective silica neutralization.Then, material of the addition rich in magnesia, such as dolomite, its main purpose is to make
Clinker reaches degree of saturation to avoid the erosion to the refractory brick of converter.The effect of material rich in magnesia is identical with lime,
And depending on the silicone content in the pig iron, the control of lime dissolving is for avoiding emulsion from spilling into outside converter or its protruding parts
Very crucial, overflow is by batch of material performance, operating time, the formation for the solid metal material being attached on spray gun and dust pelletizing system
(it needs to stop being safeguarded for a long time) produces detrimental consequences.
The second stage of decarburization relates generally to the oxidation of the carbon after silicon oxidation.Condition in converter is with high temperature, there is rush
Gas-slag-the metal emulsion for entering decarburization is characterized, and reaction speed is only determined by oxygen availability.Smelting furnace is transported as autothermic reactor
OK, the energy wherein needed for the process is provided by liquid furnace charge, the pig iron and by reacting the purifying reaction produced with oxygen.
Oxidation reaction two kinds of products of formation：Carbon monoxide (CO) and carbon dioxide (CO2), its horizontal extent be 40% to
70% CO and 10% to 40% CO2.In metal bath the violent generation of carbon monoxide cause clinker " foaming " and formed gas-
Slag-metal emulsion.The secondary burning technology of molten furnace gas is intended to Oxidation of Carbon Monoxide into carbon dioxide and produced substantial amounts of
Energy.The efficiency of the energy transmission of this additional quantity to furnace charge may also be influenceed to the use of amount of waste.The ratio of waste material in furnace charge
Example increases, therefore the steel of liquid pig iron per ton production needs to be adjusted heat balance, so as to utilize necessary extra energy
Source.Auxiliary fuel as waste material preheating and addition such as iron-silicon and smelter coke is traditional.
Decarburizing reaction is heat release and adds the temperature of metal bath.When decarbonization rate is presently not that can use by oxygen
Property control, and when being controlled by carbon spread to reaction interface, determine that the step terminates.Second-time burning reaches during batch of material decarburization
To maximum, to introduce gases into furnace atmosphere and its to be mixed into primary or secondary oxygen jet related.The carbon monoxide being mixed into
It is oxidized to carbon dioxide.Carbon dioxide part is diffused into furnace atmosphere, and remaining part reaches molten bath and emulsion, again by
Metal is reduced.The spray tip for being designated specifically to second-time burning is characterised by there are two oxygen blast conditions：By contraction and enlargement nozzle
Master blows, and by the supplement oxygen blast of straight nozzle, it is referred to as secondary jet.
Last blowing step is intended to improve the temperature of metal bath, is particularly placed into heat input a large amount of in smelting furnace
During waste material is destroyed.The step is characterised by with the reduction of carbon content in molten bath, decarbonization rate reduction and manganese and
The oxidation of iron gradually increases.The reduction that gas is produced causes the gradually destruction of emulsion, along with the coalescence and return of metallic particles
Into molten bath.With in ore and therefore in liquid metal phosphorus content increase, final blowing step, which has become, to be ensured
In one period of the low content of the other end requirement in steel, improve the blowing precision and quality still to be met in converter
It is required that.Final blowing step has the primary condition except dephosphorization：High bath level and slag oxidation；However, also one de-
The limiting factor of phosphorus：High pouring temperature.
Retaining the third composition of phosphorus in clinker includes basicity increase or calcium oxide and content of magnesia increase.Improve
Dephosphorization and whereas to improve temperature current way, the people of the resource can not be obtained for those, is to take secondary spray gun
After measure or final blowing step, addition lime or lime stone, the latter is the lime without calcining.Increase the purpose is to quick
The basicity and combination temperature of oxygenation clinker decline, with the condition created capture and retain phosphorus in clinker.Phosphorus reaction is to be easy to
Reversible, then, the result of this technology is Quick pouring.
The determination of final blowing temperature considers the heat loss processing and processing of batch of material after preliminary refinement step.For changing
Learn after the completion of the sampling that composition analysis and bath temperature are determined, smelting furnace is tilted molten steel is cast in steel disk.Then, smelting furnace
Tilt to allow the opposite side cast in steel to carry out clinker casting.The run time of all mentioned operations set determines that smelting furnace is given birth to
The time in production cycle.
Generally it is possible that Railway Project in described operation：A) curing materials (" oxygen is formed around blowing rifle
Change skin "), causing the diameter of spray gun and scale increases, and flue gas capture systems are damaged；B) as caused by the curing materials containing metal
During metal production reduction；C) high logistics cost and reclaim the tenors of curing materials in spray gun and be processed into
This；D) oxide skin formed on long-time cleaning spray gun；E) the spray gun outer tube caused is removed by oxide skin to damage, and produces spray gun dimension
Shield expense；F) heat balance of a large amount of waste materials is poor；G) the high dissociation time of clinker formation time and basic solid material are lacked
Control；And h) in finishing blowing, scrap melting and dephosphorization are lacked and controlled.
It is therefore an object of the present invention to develop a kind of spray gun, it is final to improve that it allows the flexibility in converting process
Thermal control, decarbonization rate control and phosphorus control in blowing, eliminate or substantially reduce the operation of technique in the current state-of-the-art
During problem encountered generation.
The content of the invention
One aspect of the present invention is to be introduced in each blowing step using different objects into spray gun by powdered
The guide thimble that solid material (particularly calcium oxide (lime)) is made is main into the oxygen channel nozzle with pantographic
Near oxygen outlet.Allow continuous addition for the oxygen containing lime injection that metal bath is refined, promote clinker to be formed and kept
To emulsion, the control of steel-slag-gas mixture.In another embodiment herein, it can increase in final blowing step
Injection rate, contribute to reduce molten bath in phosphorus content, carry out dephosphorization.
Another aspect of the present invention is using different objects oxygen to be introduced into spray gun and flammable in main blowing step
The secondary outlet of gas, independent control main oxygen：A) during the starting stage of scrap melting and clinker formation, reactor is improved
Caloric value can accelerate fusion process；B) during decarburization, increase oxygen supply to reduce refining time with supersonic speed；C) most
Afterwards, last blowing step promotes second-time burning to ensure low dephosphorization level to ensure temperature and improve the oxidation level of batch of material.
Embodiment
In its underpart, spray gun has two groups of gas vents for determining two blowing conditions.First group by the oxygen with scaling type
Gas channel nozzle is constituted, and is mainly responsible for oxidation reaction and the basic solid material of conveying, mainly calcium oxide during batch of material is refined,
For being initially formed clinker and in final stage dephosphorization.Second group has the two of difference in functionality by each stage in converting process
Secondary supersonic jet composition.Early stage this process, the carbon monoxide that One function is produced by oxygen and power stream occurs
Reaction is used as second-time burning agent.Second function, helps to accelerate the reaction with carbon by improving oxygen jet velocities, plus
The scrap melting of fast starting stage, and final increase metal bath element and iron oxidation, so as to during batch of material is refined most
The stage reduces phosphorus afterwards.
In order to illustrate refining of metal process, Fig. 1 shows the lateral parts of oxygen smelting furnace, and smelting furnace includes external container, gold
Belong to housing (201), open top, in fire door (207), wherein oxygen smelting furnace internally coating refractory brick (202), its function be
Metal shell (201) is protected not influenceed by extreme refining condition during oxygen blowing.In metal production process, smelting furnace bag
Containing four kinds of different materials：Liquid metal (301), waste material (302), by liquid metal element oxide and addition slag former and produce
Clinker (303) and gas (305) from purifying reaction.In converting process, metal (301), clinker (303) are formed gentle
The mixture of body (305), is referred to as emulsion, and it occupies the substantial amounts of space of smelting furnace.Have above smelting furnace one be used for capture
The gas (305) and the cleaning shaft (208) of smog produced in refining process, with opening, or in order to start liquid in stove
" dome " (209) that the spray gun (100) of state refining of metal process passes through.In order to start refining process, spray gun (100) is located at metal
At a certain distance from above molten bath, the distance is referred to as " LBD- spray guns-molten bath distance " relative to the height of static molten bath (400)
(401).In refining process, waste material (302) gradually melts, and fuses into metal bath (301).Oxygen (300) and metal bath
(301) react, initiation forms clinker (303) and produces gas (305), is formed emulsion region (402).Spray gun (100) is immersed in
In emulsion (402), this makes it be attached on spray gun or be formed spray gun oxide skin (403).(furnace cone) (206) are bored in stove
Also occur same situation with the position of fire door (207), cause to splash or dissipate by emulsion (402) and by clinker and metal (203)
Penetrate the formation for the oral area oxide skin (404) that both thrusts are caused.The other top layer of spray gun oxide skin (403) is attached to spray
On rifle (100), its passage for passing through spray gun dome (209) is damaged, this make it that production must be stopped to be cleaned and permitted
Replaced in the case of many with clean spray gun (100).Also occur identical phenomenon in the region that stove bores (206) and fire door (207),
And it is necessary to stop production activity to clean the region, is easy to filling waste material (302) and metal bath (301).
Fig. 2 shows the sectional view of the spray gun (100) of prior art, and being included in its end has by varying number
The oxygen outlet in hole and copper nozzle (101), main oxygen pipe (105), intervalve (106), the outer tube being at an angle of with vertical axis
(107) (generally made of entirely steel), wherein the spray gun (100) also has coolant entrance (108).The usually liquid of water
(304) copper nozzle (101) is flowed to, lance outlet (109) is returned to via outer tube (107).The superperformance of spray gun (100) depends on
In the outlet capacity that heat is taken away from nozzle (101) and outer tube (107).
Fig. 3 is the sectional view of the bottom second-time burning module (114) of embedded copper nozzle (101), and it is included around main oxygen
(115) the secondary outlet of the bottom oxygen (116) of scaling outlet.Powdered solids injection tube (119) is inserted into main oxygen
The inside of tracheae (105).It is different from prior art practice, implement to inject powdered by the pipe (119) by being continuously blown
Solid material, and in this case, oxygen is delivery gas (300).In the case where gradation is added, similar to prior art
Practice, in non-injection interim, use the inert gas (307) of usually argon gas or nitrogen.In order to prevent in main oxygen
Manage and suspension is formed in (105), powdered solids injection tube (119) is close to copper nozzle (101).In powdered solids
The exit of (119) is managed, there can be the flow drive suitable for the Solid Conveying and Melting of crushing to main oxygen (115) is exported, it is fitted
When size to convey gas and solid.Pulverulent solids injection tube (119) can be with 50kg/min to 1500kg/min injection
Speed works, and extends to the surface of copper nozzle (101), to unload the material for ambient vessel.
In shown structure, the secondary outlet (116) of bottom oxygen of annular or point-like is connected to main oxygen pipe (105),
Purpose is to realize second-time burning, and it is easy to waste material (302) in blowing fusing at initial stage and can also connected with helping air supply room (117)
Connect.For placing a large amount of waste materials in a furnace there is provided the insertion of helping air supply room (117), the helping air supply room (117) can be with
By oxidizing gas, for example in itself (300), and fuel gas (305) intersects oxygen, and exporting (118) by secondary air contacts
Furnace environment (200).Helping air supply room (117) is intended to make it possible to independent control pressure and flow condition.Therefore, refining
The early stage of journey, if the chamber (camera) is used for oxygen (300) passage, the condition of intermediate pressure and flow is conducive to waste material
(302) melt, and second-time burning results in the primary slags (303) rich in iron oxide, is conducive to the molten of other slag formers
Solution.Then, in decarbonation process, condition is changed into high pressure and high flow capacity, and the carbon contributed in metal bath (301) refining process is removed
Go the increase of rate.Finally, in process finishing, the condition of low discharge and low-pressure and increase clinker (303) oxidation is produced, is had
Help the reservation of phosphorus.In the case of excessive temperature, inert gas with cooling agent property or even antiscales can be used
To prevent secondary air from exporting the closure of (118).
Claims (12)
- It is characterized in the bottom second-time burning of embedded copper nozzle (101) 1. a kind of be used to manufacture the blowing rifle component with refined metals Module (114), and include the secondary outlet for bottom oxygen (116) and fuel gas (117), its circular main oxygen of pantographic Gas exports (115), it is characterised in that main oxygen pipe (105) includes powdered solids injection tube (119) inside it.
- 2. blowing rifle component according to claim 1, it is characterised in that it, which has, is used for oxygen (116) and fuel gas (117) secondary outlet, it has independent control to main oxygen.
- 3. blowing rifle component according to claim 1, it is characterised in that the pulverulent solids are blown by pipe (119) Material is carried out continuously.
- 4. the blowing rifle component according to claim 1 and 3, it is characterised in that oxygen is delivery gas.
- 5. blowing rifle component according to claim 1, it is characterised in that in injection interim, when progress gradation addition When, the carrier of granular materials is used as using inert gas.
- 6. blowing rifle component according to claim 5, it is characterised in that the inert gas is argon gas.
- 7. blowing rifle component according to claim 5, it is characterised in that the inert gas is nitrogen.
- 8. blowing rifle component according to claim 1, it is characterised in that the powdered solids injection tube (119) Extend to copper nozzle side (101).
- 9. blowing rifle component according to claim 1, it is characterised in that there may be suitable for powdered solids outlet (119) flow drive.
- 10. blowing rifle component according to claim 1, it is characterised in that the powdered solids injection tube (119) With the injection rate work in the range of 50kg/min to 1500kg/min.
- 11. blowing rifle component according to claim 1, it is characterised in that the secondary outlet of bottom oxygen of annular or point-like (116) it is connected with main oxygen pipe (105).
- 12. blowing rifle component according to claim 1, it is characterised in that the secondary outlet of bottom oxygen of annular or point-like (116) it is connected with helping air supply room (117).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR102015003522-5 | 2015-02-19 | ||
| BR102015003522A BR102015003522A2 (en) | 2015-02-19 | 2015-02-19 | metal manufacturing and refining blow boom assembly |
| PCT/BR2016/050032 WO2016131118A1 (en) | 2015-02-19 | 2016-02-17 | Blow lance assembly for metal manufacturing and refining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107250386A true CN107250386A (en) | 2017-10-13 |
Family
ID=56688688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680010727.5A Pending CN107250386A (en) | 2015-02-19 | 2016-02-17 | The blowing rifle component for manufacturing and refining for metal |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20180258503A1 (en) |
| JP (1) | JP2018506649A (en) |
| CN (1) | CN107250386A (en) |
| BR (1) | BR102015003522A2 (en) |
| DE (1) | DE112016000404T5 (en) |
| WO (1) | WO2016131118A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI737504B (en) * | 2020-09-28 | 2021-08-21 | 中國鋼鐵股份有限公司 | Dephosphorization method of basic oxygen furnace slag |
| CN116926273B (en) * | 2023-09-15 | 2023-11-24 | 山西华茂智能新材料有限公司 | Gun replacing platform of magnesium spraying spheroidization station |
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| DE19755876C2 (en) * | 1997-12-04 | 2000-02-24 | Mannesmann Ag | Blow lance for treating metallic melts and method for blowing in gases |
| GB0209364D0 (en) * | 2002-04-24 | 2002-06-05 | Boc Group Plc | Injection of particulate material into liquid |
| JP2006328432A (en) * | 2005-05-23 | 2006-12-07 | Jfe Steel Kk | Blowing method for converter and top-blowing lance for converter blowing |
| AT506984B1 (en) * | 2008-06-17 | 2010-06-15 | Siemens Vai Metals Tech Gmbh | OXYGEN BLASLANT WITH PROTECTIVE ELEMENT |
| JP2013209738A (en) * | 2011-04-27 | 2013-10-10 | Jfe Steel Corp | Method of manufacturing molten steel |
-
2015
- 2015-02-19 BR BR102015003522A patent/BR102015003522A2/en not_active Application Discontinuation
-
2016
- 2016-02-17 US US15/549,493 patent/US20180258503A1/en not_active Abandoned
- 2016-02-17 WO PCT/BR2016/050032 patent/WO2016131118A1/en active Application Filing
- 2016-02-17 DE DE112016000404.4T patent/DE112016000404T5/en not_active Ceased
- 2016-02-17 CN CN201680010727.5A patent/CN107250386A/en active Pending
- 2016-02-17 JP JP2017544321A patent/JP2018506649A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB914086A (en) * | 1960-07-20 | 1962-12-28 | Huttenwerk Salzgitter Ag | Lance for blowing gaseous oxygen and solids on or into metal baths |
| US5931985A (en) * | 1994-11-18 | 1999-08-03 | Mannesmann Aktiengesellschaft | Process and device for blowing oxygen-containing gas with and without solid material on a metal melt in a metallurgical vessel |
| CN1324411A (en) * | 1998-08-28 | 2001-11-28 | 沃斯特－阿尔派因工业设备制造有限公司 | Method for producing a metal melt and corresponding multifunction lance |
| CN1646708A (en) * | 2002-04-24 | 2005-07-27 | 英国氧气集团有限公司 | Injection of solids into liquids by means of a shrouded supersonic gas jet |
| JP2010156025A (en) * | 2008-12-29 | 2010-07-15 | Jfe Steel Corp | Burner lance for charging powdery and granular material into smelting reduction furnace, and method for producing molten metal by smelting reduction |
| CN103890199A (en) * | 2011-10-17 | 2014-06-25 | 杰富意钢铁株式会社 | Powder injection lance and method of refining molten iron using the powder injection lance |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112016000404T5 (en) | 2017-10-26 |
| BR102015003522A2 (en) | 2016-08-23 |
| WO2016131118A1 (en) | 2016-08-25 |
| JP2018506649A (en) | 2018-03-08 |
| US20180258503A1 (en) | 2018-09-13 |
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