CN103866083A - Method and equipment for directly injecting slag, pushing off slag and tapping steel by use of converter high-pressure gas - Google Patents
Method and equipment for directly injecting slag, pushing off slag and tapping steel by use of converter high-pressure gas Download PDFInfo
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- CN103866083A CN103866083A CN201410108968.6A CN201410108968A CN103866083A CN 103866083 A CN103866083 A CN 103866083A CN 201410108968 A CN201410108968 A CN 201410108968A CN 103866083 A CN103866083 A CN 103866083A
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- slag
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Abstract
The invention discloses a method for directly injecting slag, pushing off slag and tapping steel by use of a converter high-pressure gas, and the method can be used for realizing efficient slag pushing-off, saving slag pushing-off materials and realizing environmental pollution and energy conversation. A high-pressure spray gun is utilized to directly blow a high-pressure gas on slag, so that the slag and a molten steel surface are separated to form a liquid surface without slag; gas protection is formed on a position without the liquid surface, so that the slag cannot be dropped underneath the liquid surface by virtue of rotational flow; the molten steel flows out of a steel outlet, so that the steel does not discharge slag. An angle of 10-89 degrees is formed by the molten steel surface and a spray head of a spray gun, so that an oval slag-free liquid surface which takes the liquid outlet as a circle center is blown out. Gas pressure of the high-pressure spray gun is within pressure of 10 atmospheres. The method disclosed by the invention is especially suitable for pushing off the converter slag.
Description
Technical field
The present invention relates to converter tapping shelves slag technical field, relate in particular to directly the jet method and apparatus of slag shelves slag tapping of converter high pressure gas converter high pressure gas.
Background technology
What at present domestic and international iron and steel enterprise adopted substantially is the correlation technique being developed by shelves slag ball, is exactly a shelves slag plug shelves slag tapping method.Shelves slag ball method is Nippon Steel's invention in 70 years.Be all utilize the difference of the proportion of shelves slag ball and molten steel that a grade residue material is floated on molten steel surface, under the effect of eddy flow, go to tap hole place and realize shelves slag.But in stove, change, just can accurately not block slag along with molten steel is dirty.And shelves slag effect is undesirable.Also have following certain methods, shelves slag plug method, is the invention of MICNAEL D.ABATE company; Shelves slag charge method; Keep away slag cover method; (at tap hole chock plug, place arranges high pressure air port to pneumatic dreg blocking method, makes slag can not enter tap hole, realizes shelves slag, blows from bottom to top in tap hole bottom, by tap hole, also has shelves slag ball or shelves slag plug; Electroslag pushing off the slag method; Tap hole is blown and is disturbed eddy-current method; Rotate cantilever method; Shelves slag rod method; Shelves slag ladle pushing off the slag method; Current-sharing tap hole method.Substantially be a grade slag plug shelves slag tapping now, also, with regard to the said shelves of preceding article slag plug method, do a location to shelves slag ball, establish a larger tail of proportion to shelves slag ball, then design some chutes on shelves slag ball surface.Guarantee in chute, to flow out and can block again descending slag at tapping later stage molten steel, realize shelves slag.But due to the difference of situation in stove, a shelves slag is plugged with time not in place, then has and all will consume this grade of slag plug at every turn, cause the waste of resource.
Summary of the invention
The object of this invention is to provide directly the jet method and apparatus of slag shelves slag tapping of a kind of converter high pressure gas, can not realize any more slag or descend less slag, realize saving material and environmental protection and energy saving.The present invention is outside converter mouth; blow slag open with the spray gun high pressure gas of directly jetting; make slag and molten steel face separate lot; do not have the position of liquid level to form a kind of gas shield at this, eddy flow can not make to arrive molten steel face once under slag, and molten steel just flows out tap hole; realize slag free tapping. the performing step of shelves slag of the present invention; (1) slag-blocking apparatus complete installation is before converter or be arranged on converter platform front upper place, and ground is covered with the ready-made railway of rail, and slag-blocking apparatus entirety is transportable.Install in original aerial device of throwing in shelves slag plug.High pressure gas are connected to the afterbody of high-pressure spray gun, connect with the mains; (2) adjust high pressure gas valve and watch high pressure gas body surface and reometer, telepilot on probation; (3) prepare to enter a grade slag job, when the tapping of shelves slag, make spray gun enter rapidly converter, adjust distance and the angle of shower nozzle and molten steel.Start winding-up.The rear withdrawal spray gun of having tapped.Complete a grade slag.
Described telepilot can be selected PLC controller.
Advantage of the present invention is: can realize efficient pushing off the slag, save shelves residue material, realize environmental protection and energy saving.
Accompanying drawing explanation
Fig. 1 is the present invention's high pressure gas shelves slag method flow diagram.
Fig. 2 is the present invention's high pressure gas shelves slag single unit system.
Fig. 3 is a kind of structure of high pressure gas shelves slag lance head of the present invention.
Fig. 4 is the another kind of structure of high pressure gas shelves slag lance head of the present invention.
Fig. 5 is another structure of high pressure gas shelves slag lance head of the present invention.
In figure, 1 is converter ladle, the 2nd, and rifle body, the 3rd, aspirated switch, the 4th, induction pipe, the 5th, cold medium transport pipe, the 6th, jacking system, the 7th, mobile system, the 8th, road wheel, the 9th, Controlling System, the 10th, jacking system, the 11st, rifle head, the 12nd, shower nozzle, the 13rd, outer tube, the 15th, main production well, the 16th, annular secondary production well, the 17th, cooling channel.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Before single unit system (Fig. 2) is placed on to converter, adjust position, determine according to the platform size of converter and the situation of platform, on high pressure spray gun breech, utilize Packed flange to connect high pressure shelves slag gas, connect heat-eliminating medium.Debugging remote controller and adjust instrumented data, weather gage reaches certain pressure at 1-10 normal atmosphere.Make spray gun spray nozzle can arrive specified location, spray gun spray nozzle and molten steel face form the angle of 10 °-89 °, open high pressure gas switch, and air pressure will be at 1-10 normal atmosphere, start winding-up, and spray gun can be declined along with the decline of tapping liquid level; Blow out converter molten steel open certain area and realize shelves slag without the liquid level of slag.The signal that the signal that the signal sending according to existing slag discharge detecting device of revolving furnace or steelworks workman send and special infrared position sensor send.Complete Burners Positions and adjust, realize a shelves slag.
Its parts and working process are as follows; Start to forward to after certain angle in converter 1, the special oxygen rifle 2 of high pressure gas shelves slag puts in place simultaneously, oxygen rifle rifle head (shower nozzle) 11 starts to jet high pressure gas, adjust high-pressure blast electromagnetism air inlet switch 3 adjust the ventilation of high-pressure blast induction pipe 4, will pass through cooling duct 5 cooling gun bodies 7 simultaneously, with telepilot adjustment rifle position, adjust advance and retreat spray gun mechanism 8, adjust spray gun height and angle, with panel board in Controlling System and PLC module and remote control control module realization shelves slag.The 11st, single unit system travel mechanism.Described rifle position adjustment mechanism, for electronic tooth bar or be pneumatic or be hydro-cylinder or strand mill.Utilize telepilot control enter rifle and return rifle, utilize height and the angle of telepilot control rifle.
When use, utilize lower slag infrared eye, feed back signal to PLC in single unit system upper, automatically adjust to air quantity.
The sprinkler design of spray gun is single hole, many empty, interior logical heat-eliminating mediums of spray gun, guarantees repeatedly Reusability.
Shelves slag single unit system and high-pressure spray gun position, need be according to concrete steel mill and converter adjustment location.In single unit system, make record, provide convenience for using.Above-mentioned single unit system structure is very simple, is all common mechanical connecting structure.With reference to accompanying drawing, those of ordinary skill in the art all can realize.
The present invention's high pressure gas shelves slag oxygen lance blow head has two kinds of structures 1, has the shower nozzle of heat-eliminating medium, designing certain Mach number reaches and blows slag (Fig. 3 Fig. 4) open, 2, without the shower nozzle of heat-eliminating medium, the design of the production well of certain Mach number will reach the slag of proportion 3 left and right is blown open, and cooling gas is exactly the high pressure gas (Fig. 5) of itself.
Claims (4)
1. the converter high pressure gas method of slag shelves slag tapping of directly jetting; it is characterized in that: utilize high-pressure spray gun that high pressure gas are directly blown on slag; slag and molten steel face are separated; form a liquid level that there is no slag; do not have the position of liquid level to form a kind of gas shield at this; make eddy flow can not make to arrive below molten steel face under slag, molten steel flows out tap hole, realizes the method for the slag of not tapping.
2. the converter high pressure gas according to claim 1 method of slag shelves slag tapping of directly jetting, is characterized in that: molten steel face and spray gun spray nozzle will form the angle of 10 °-89 °, blows out the oval-shaped liquid level without slag take tap hole as the center of circle.
3. the converter high pressure gas according to claim 1 method of slag shelves slag tapping of directly jetting, is characterized in that: the air pressure of high-pressure spray gun will be in 1-10 normal atmosphere.
4. as directly the jet method equipment used of slag shelves slag tapping of converter high pressure gas according to claim 1, it is characterized in that: described high-pressure spray gun is mounted on single unit system, it is to be completed by chain or tooth bar electric remote control that the running gear moving forward and backward of single unit system and the advance and retreat angle of rifle change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108968.6A CN103866083A (en) | 2014-03-24 | 2014-03-24 | Method and equipment for directly injecting slag, pushing off slag and tapping steel by use of converter high-pressure gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108968.6A CN103866083A (en) | 2014-03-24 | 2014-03-24 | Method and equipment for directly injecting slag, pushing off slag and tapping steel by use of converter high-pressure gas |
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| Publication Number | Publication Date |
|---|---|
| CN103866083A true CN103866083A (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410108968.6A Pending CN103866083A (en) | 2014-03-24 | 2014-03-24 | Method and equipment for directly injecting slag, pushing off slag and tapping steel by use of converter high-pressure gas |
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| CN (1) | CN103866083A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109880965A (en) * | 2019-04-24 | 2019-06-14 | 东北大学 | The device and method that a kind of converter taphole top powder dephosphorization realizes pushing off the slag simultaneously |
| CN114593610A (en) * | 2022-03-04 | 2022-06-07 | 爵翔(上海)能源科技有限公司 | Spray gun, position adjusting method thereof and metal smelting equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10176212A (en) * | 1996-12-18 | 1998-06-30 | Sumitomo Metal Ind Ltd | Method for preventing flow-out of slag at the time of discharging molten steel |
| CN200971371Y (en) * | 2006-07-19 | 2007-11-07 | 孙涛 | Converter air slag blowing device |
-
2014
- 2014-03-24 CN CN201410108968.6A patent/CN103866083A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10176212A (en) * | 1996-12-18 | 1998-06-30 | Sumitomo Metal Ind Ltd | Method for preventing flow-out of slag at the time of discharging molten steel |
| CN200971371Y (en) * | 2006-07-19 | 2007-11-07 | 孙涛 | Converter air slag blowing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109880965A (en) * | 2019-04-24 | 2019-06-14 | 东北大学 | The device and method that a kind of converter taphole top powder dephosphorization realizes pushing off the slag simultaneously |
| CN109880965B (en) * | 2019-04-24 | 2020-08-04 | 东北大学 | Device and method for powder injection dephosphorization and simultaneous slag blocking above converter steel tapping hole |
| CN114593610A (en) * | 2022-03-04 | 2022-06-07 | 爵翔(上海)能源科技有限公司 | Spray gun, position adjusting method thereof and metal smelting equipment |
| CN114593610B (en) * | 2022-03-04 | 2024-03-08 | 爵翔(上海)能源科技有限公司 | Spray gun, position adjusting method thereof and metal smelting equipment |
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Application publication date: 20140618 |