CN202626233U - LF refining device with powder injection function - Google Patents
LF refining device with powder injection function Download PDFInfo
- Publication number
- CN202626233U CN202626233U CN 201220128807 CN201220128807U CN202626233U CN 202626233 U CN202626233 U CN 202626233U CN 201220128807 CN201220128807 CN 201220128807 CN 201220128807 U CN201220128807 U CN 201220128807U CN 202626233 U CN202626233 U CN 202626233U
- Authority
- CN
- China
- Prior art keywords
- electrode
- dusting
- refining
- ladle
- powder spraying
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model relates to an LF refining device with a powder injection function, and belongs to the technical field of steelmaking refining equipment in metallurgical industry. According to the technical scheme, a water-cooling furnace cover (5) is arranged on a ladle (4); each graphite electrode (6) penetrates through the water-cooling furnace cover, enters the ladle, has a hollow structure, is provided with an electrode center channel (7) and an electrode gripper (8) and is connected with a power supply through the electrode gripper (8); and each electrode center channel is connected with a powder injection mechanism through a pipeline. The LF refining furnace has the advantages that solid graphite electrodes of the traditional LF furnace are replaced by the hollow electrodes, so that the LF refining device can be compatible with all refining functions of the conventional LF furnace and has the powder injection function, equipment and space are not required to be added, desulfurizer powder and alloy powder can be blown through electrode holes, slagging speed, desulfurization efficiency and alloy yield are effectively improved, refining time can be shortened, and power consumption and electrode consumption are reduced.
Description
Technical field
The utility model relates to a kind of LF a refining unit with the function of dusting, and belongs to metallurgy industry steel-making refining unit technical field.
Background technology
LF possesses molten steel alloying, dark desulfurization, goes to be mingled with, heats up, even function such as molten steel composition and temperature, and smelting cycle is flexible, is steel-making and effective buffering link of continuous casting, and is widely-used by most of steel mills.Present 90% above steel grade all need be very convenient with the LF refining through LF refining, particularly low-sulfur steel and steel alloy, and liquid steel refining is effective.LF is when carrying out dark desulfurization for tradition, adopts sweetening agent slag making such as adding lime usually, utilizes the heated by electrodes slag, forms preferably to utilize the Argon stirring to carry out desulfurization after the desulfurization slag.Therefore, because LF needs long refining time slag, cause tap to tap time long, power consumption and consumption of electrode are big, have increased production cost.In addition, the alloying function of traditional LF is to utilize feed bin to add bulk alloy to ladle, carries out the molten steel alloying; During alloying, owing at high temperature directly contact with atmosphere, and need pass slag blanket entering molten steel; Unavoidably can form oxidation; Cause yield of alloy low, particularly the lightweight of some easy oxidations active alloying element is like Al, Mg, Ca etc., and yield is all very low usually.And some high melting point alloys, such as alloying elements such as Nb, V, Ti, Cr, W, because lumpiness is big; Fusing point is high; Be to form alloying in molten steel with the mode of dissolving, therefore, low owing to dissolving speed; Can influence rhythm of production and yield of alloy, even owing to alloy dissolves the inhomogeneous steel quality that influences.
The utility model content
The utility model purpose provides a kind of LF a refining unit with the function of dusting; Solid Graphite Electrodes through with traditional LF transform coreless armature as; With sweetening agent and alloy powder is that carrier is spurted in the ladle through the centre channel of electrode with the rare gas element, has improved traditional LFization slag speed, desulfuration efficiency and yield of alloy.
The utility model technical scheme is:
A kind of LF a refining unit with the function of dusting comprises ladle, water cooled cover, Graphite Electrodes, pipeline, electrode jaw, power supply and the mechanism of dusting, and water cooled cover is arranged on the ladle; Graphite Electrodes passes water cooled cover and gets in the ladle; Graphite Electrodes is a hollow structure, has the electrode centers passage, and is provided with electrode jaw; Graphite Electrodes is connected with power supply through electrode jaw, and the electrode centers passage is connected with the mechanism of dusting through pipeline.
The said mechanism of dusting comprises source of the gas, powder spraying pot, gas cylinder SV, powder spraying pot inlet shutoff valve, powder spraying pot outlet shutoff valve and pipe break valve; Pipe break valve be arranged on the channel attached pipeline of electrode centers on; Be connected with gas cylinder through the gas cylinder SV, powder spraying pot is connected across the two ends of pipe break valve through powder spraying pot inlet shutoff valve, powder spraying pot outlet shutoff valve.
Under meter, reducing valve also are set on the source of the gas outlet conduit, and also are provided with vacuum breaker on the channel attached pipeline of electrode centers.
The mechanism of dusting also is provided with the pulvis storage tank, is communicated with powder spraying pot through stopping valve, and the pulvis storage tank adds feed bin through pipeline and pulvis and is connected.
Said water cooled cover is provided with charging opening and temperature-measuring port, and charging opening adds feed bin with bulk alloy and is connected.Ladle is arranged on the buggy ladle.Said power supply is the low-voltage and high-current three-phase alternating-current supply.
Said source of the gas can be gas cylinder or external source of the gas, and gas is argon gas, nitrogen or carbon monoxide.Said pulvis adds dress alloy powder in feed bin, pulvis storage tank, the powder spraying pot, can be lime powder or calcium iron powder or aluminium powder or carborundum powder.
The dusting device of background technology also can be used for desulfurization, generally is to build special gun system, is used for handling molten steel or molten iron at special station, accomplishes functions such as desulfurization.And the utility model is through transforming the LF electrode; Solid Graphite Electrodes is replaced by hollow graphite electrode, need not to increase station and lance driving device, make traditional LF in the existing refining function of compatibility; Also possesses the function of dusting; Can improve desulfuration efficiency and yield of alloy, shorten refining time simultaneously, reduce power consumption and consumption of electrode.
The utility model is to be to spray carrier with the rare gas element, and sweetening agent and alloy powder are sprayed in the molten steel through centre hole of electrode, and pulvis is directly contacted with molten steel; Utilize the high temperature instant melting powder of electric arc simultaneously, and after getting into molten steel, form violent stirring, increased the contact interface of sweetening agent and powdered alloy and molten steel; Improved the dynamic conditions of smelting; Can effectively improve desulfuration efficiency and yield of alloy, and shorten the heat, thereby reduce power consumption and consumption of electrode.The powdered alloy that is used to spray can be selected according to the needs of steel grade, is mainly to be prone to oxidation lightweight deoxygenated alloy Al, Mg, Ca etc., and high melting point alloy Nb, V, Ti, Cr etc.
The advantage of the utility model: all functions of the compatible existing LF of ability; Need not extra increase equipment and space; Can possess the function of dusting, can pass through electrode hole blowing desulfurization agent powder and alloy powder, can improve slagging speed, desulfuration efficiency and yield of alloy; Simultaneously refining time be can shorten, power consumption and consumption of electrode reduced.
Description of drawings
Fig. 1 is the utility model embodiment synoptic diagram;
Among the figure: 1 is buggy ladle, and 2 is slide gate nozzle, and 3 is gas permeable brick, and 4 is ladle, and 5 is water cooled cover; 6 is Graphite Electrodes, and 7 is the electrode centers passage, and 8 is electrode jaw, and 9 is joint and tightness system, and 10 is pipeline; 11 is vacuum breaker, and 12 is pipe break valve, and 13 is under meter, and 14 is reducing valve, and 15 is SV; 16 is gas cylinder, and 17 is the powder spraying pot inlet shutoff valve, and 18 is the pulvis storage tank, and 19 is stopping valve, and 20 is powder spraying pot; 21 is the powder spraying pot outlet shutoff valve, and 22 for bulk alloy adds feed bin, and 23 is charging opening, and 24 is temperature-measuring port, and 25 add feed bin for pulvis.
Embodiment
Below, the utility model is described further through embodiment.
A kind of LF a refining unit with the function of dusting comprises ladle 4, water cooled cover 5, Graphite Electrodes 6, pipeline, electrode jaw 8, power supply and the mechanism of dusting, and water cooled cover is arranged on the ladle; Graphite Electrodes passes water cooled cover and gets in the ladle; Graphite Electrodes is a hollow structure, has electrode centers passage 7, and is provided with electrode jaw; Graphite Electrodes is connected with power supply through electrode jaw, and the electrode centers passage is connected with the mechanism of dusting through pipeline.
The said mechanism of dusting comprises gas cylinder 16, powder spraying pot 20, gas cylinder SV 15, powder spraying pot inlet shutoff valve 17, powder spraying pot outlet shutoff valve 21 and pipe break valve 12; Pipe break valve be arranged on the channel attached pipeline of electrode centers on; Be connected with gas cylinder through the gas cylinder SV, powder spraying pot is connected across the two ends of pipe break valve through powder spraying pot inlet shutoff valve, powder spraying pot outlet shutoff valve.
Under meter 13, reducing valve 14 also are set on the gas cylinder outlet conduit, and also are provided with vacuum breaker 11 on the channel attached pipeline of electrode centers.The mechanism of dusting also is provided with pulvis storage tank 18, is communicated with powder spraying pot 20 through stopping valve 19, and pulvis storage tank 18 adds feed bin 25 through pipeline and pulvis and is connected.
Said water cooled cover is provided with charging opening 23 and temperature-measuring port 24, and charging opening adds feed bin 22 with bulk alloy and is connected.Ladle is arranged on the buggy ladle 1.Said power supply is the low-voltage and high-current three-phase alternating-current supply.
Said source of the gas can be nitrogen, argon gas or carbon monoxide.Can be lime powder, sweetening agent powder, calcium iron powder, aluminium powder or other powdered alloy in said pulvis storage tank, the powder spraying pot.
The concrete operations of the utility model are following:
The ladle 4 of band molten steel is opened to the refining station through buggy ladle 1, and water cooled cover 5 is reduced to working position, thermometric, sampling; Graphite Electrodes 6 is dropped between the top of the slag and the molten steel face, and energized makes electrode starting the arc heating, according to steel grade desulfurization or alloying needs; Blowing desulfurization agent in early stage or lime carry out the slag making desulfurization, and later stage winding-up alloy powder is during winding-up; Select pulvis to add feed bin, quantitative alloy powder is injected the filling of dusting, close stopping valve 19 through the pulvis storage tank; Open powder spraying pot inlet shutoff valve 17 and powder spraying pot outlet shutoff valve 21, close pipe break valve 12, utilize carrier gas that the alloy powder in the powder spraying pot 20 is injected in the ladle 4.
Claims (6)
1. LF a refining unit with the function of dusting; It is characterized in that comprising ladle (4), water cooled cover (5), Graphite Electrodes (6), pipeline, electrode jaw (8), power supply and the mechanism of dusting; Water cooled cover is arranged on the ladle, and Graphite Electrodes passes water cooled cover and gets in the ladle, and Graphite Electrodes is a hollow structure; Has electrode centers passage (7); And be provided with electrode jaw (8), and Graphite Electrodes (6) is connected with power supply through electrode jaw 8, and the electrode centers passage is connected with the mechanism of dusting through pipeline.
2. a kind of LF a refining unit with dust function according to claim 1; It is characterized in that the said mechanism of dusting comprises gas cylinder (16), powder spraying pot (20), gas cylinder SV (15), powder spraying pot inlet shutoff valve (17), powder spraying pot outlet shutoff valve (21) and pipe break valve (12); Pipe break valve be arranged on the channel attached pipeline of electrode centers on; Be connected with gas cylinder through the gas cylinder SV, powder spraying pot is connected across the two ends of pipe break valve through powder spraying pot inlet shutoff valve and powder spraying pot outlet shutoff valve.
3. a kind of LF a refining unit with dust function according to claim 2 is characterized in that also being provided with on the gas cylinder outlet conduit under meter (13), reducing valve (14), and also is provided with vacuum breaker (11) on the channel attached pipeline of electrode centers.
4. a kind of LF a refining unit with dust function according to claim 2; The mechanism that it is characterized in that dusting also is provided with pulvis storage tank (18); Be communicated with powder spraying pot (20) through stopping valve (19), pulvis storage tank (18) adds feed bin (25) through pipeline and pulvis and is connected.
5. according to claim 1 or 2 said a kind of LF a refining units with the function of dusting, it is characterized in that said water cooled cover is provided with charging opening (23) and temperature-measuring port (24), charging opening adds feed bin (22) with bulk alloy and is connected.
6. according to claim 1 or 2 said a kind of LF a refining units, it is characterized in that ladle is arranged on the buggy ladle with the function of dusting; Said power supply is the low-voltage and high-current three-phase alternating-current supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220128807 CN202626233U (en) | 2012-03-30 | 2012-03-30 | LF refining device with powder injection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220128807 CN202626233U (en) | 2012-03-30 | 2012-03-30 | LF refining device with powder injection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202626233U true CN202626233U (en) | 2012-12-26 |
Family
ID=47379451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220128807 Expired - Fee Related CN202626233U (en) | 2012-03-30 | 2012-03-30 | LF refining device with powder injection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202626233U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110957A (en) * | 2013-04-18 | 2014-10-22 | 甘肃山丹腾达西铁冶金有限责任公司 | Furnace heat exchange type electric arc metallurgy equipment for smelting various special alloys |
| CN105984889A (en) * | 2015-02-11 | 2016-10-05 | 佟玉鹏 | Hollow electrode electro-fused magnesia furnace and electro-fused magnesia production method |
| CN107794341A (en) * | 2016-09-06 | 2018-03-13 | 鞍钢股份有限公司 | Nitrogen increasing device and method for refining process of L F furnace |
| CN109487033A (en) * | 2018-12-16 | 2019-03-19 | 河钢股份有限公司承德分公司 | A method of dilution aluminum shot deoxidation agent |
| CN112159883A (en) * | 2020-09-25 | 2021-01-01 | 三明学院 | LF refining device |
| CN112458236A (en) * | 2021-01-29 | 2021-03-09 | 北京科技大学 | Method for refining and deep desulfurization of molten steel, device for refining molten steel and application |
| CN112680568A (en) * | 2021-01-26 | 2021-04-20 | 江苏沙钢集团淮钢特钢股份有限公司 | LF stove is concise blows slag face deoxidation device |
| CN112974738A (en) * | 2021-04-23 | 2021-06-18 | 北京科技大学 | Continuous casting microalloying production method |
| CN115747416A (en) * | 2022-11-09 | 2023-03-07 | 山东钢铁股份有限公司 | Method for prolonging ladle age of ladle for LF refining |
| CN115820964A (en) * | 2022-12-08 | 2023-03-21 | 徐州宏阳新材料科技股份有限公司 | Device and method for preparing high-carbon ferrochrome through whole-powder ore smelting |
-
2012
- 2012-03-30 CN CN 201220128807 patent/CN202626233U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110957A (en) * | 2013-04-18 | 2014-10-22 | 甘肃山丹腾达西铁冶金有限责任公司 | Furnace heat exchange type electric arc metallurgy equipment for smelting various special alloys |
| CN104110957B (en) * | 2013-04-18 | 2017-03-29 | 甘肃山丹腾达西铁冶金有限责任公司 | A kind of stove interior-heat smelted for various special alloys converts formula arc metallurgy equipment |
| CN105984889A (en) * | 2015-02-11 | 2016-10-05 | 佟玉鹏 | Hollow electrode electro-fused magnesia furnace and electro-fused magnesia production method |
| CN105984889B (en) * | 2015-02-11 | 2018-07-17 | 佟玉鹏 | Coreless armature electric melting magnesium furnace and electric-melting magnesium production method |
| CN107794341A (en) * | 2016-09-06 | 2018-03-13 | 鞍钢股份有限公司 | Nitrogen increasing device and method for refining process of L F furnace |
| CN109487033A (en) * | 2018-12-16 | 2019-03-19 | 河钢股份有限公司承德分公司 | A method of dilution aluminum shot deoxidation agent |
| CN112159883A (en) * | 2020-09-25 | 2021-01-01 | 三明学院 | LF refining device |
| CN112680568A (en) * | 2021-01-26 | 2021-04-20 | 江苏沙钢集团淮钢特钢股份有限公司 | LF stove is concise blows slag face deoxidation device |
| CN112458236A (en) * | 2021-01-29 | 2021-03-09 | 北京科技大学 | Method for refining and deep desulfurization of molten steel, device for refining molten steel and application |
| CN112458236B (en) * | 2021-01-29 | 2021-04-30 | 北京科技大学 | Method for refining and deep desulfurization of molten steel, device for refining molten steel and application |
| CN112974738A (en) * | 2021-04-23 | 2021-06-18 | 北京科技大学 | Continuous casting microalloying production method |
| CN115747416A (en) * | 2022-11-09 | 2023-03-07 | 山东钢铁股份有限公司 | Method for prolonging ladle age of ladle for LF refining |
| CN115747416B (en) * | 2022-11-09 | 2024-01-02 | 山东钢铁股份有限公司 | Method for improving ladle age for LF refining |
| CN115820964A (en) * | 2022-12-08 | 2023-03-21 | 徐州宏阳新材料科技股份有限公司 | Device and method for preparing high-carbon ferrochrome through whole-powder ore smelting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202626233U (en) | LF refining device with powder injection function | |
| CN108085577B (en) | A kind of smelting process improving ton steel scrap ratio | |
| CN100569969C (en) | The ferrosilicon smelting waste utilizes technology in manganese alloy smelting | |
| CN202658180U (en) | Refining device for smelting low-nitrogen steel and high-nitrogen steel by Ar/N2 plasma source | |
| CN103469049A (en) | Technology for steel making by directly alloying molybdenum oxide | |
| CN103045788A (en) | Reduction steel-making method and reduction steel-marking device | |
| CN103255266A (en) | Bottom powder spraying/vacuum degassing molten steel refining device and method | |
| CN103882181A (en) | Manganese-containing steel alloying process | |
| CN102827997A (en) | Calcium carbide ferro-aluminium alloy used for smelting steel, and preparation method thereof | |
| CN102787195A (en) | Stainless-steel smelting method | |
| CN204385232U (en) | Lf ladle refining furnace | |
| CN109022826A (en) | Reduction refining integration smelting system | |
| CN202626234U (en) | Refining device for smelting low-carbon steel and ultra-low carbon steel by utilizing Ar/O2 plasma | |
| CN103741023B (en) | A kind of smelting process of nonmagnetic steel | |
| CN102559998A (en) | Technology for online dusting desulfuration of steel ladles | |
| CN101323898B (en) | Oxygen one-step impurity removing refining method for raw ferro nickel | |
| CN104878159A (en) | Method for increasing yield of molten steel chromium in chromium ore direct-alloying | |
| CN209052749U (en) | A kind of reduction refining integration smelting system | |
| CN102277471A (en) | Manufacturing method of steel | |
| CN104195293A (en) | Erosion-resistant CAS-OB refining device for dipping cover | |
| CN101323897A (en) | Air one-step impurity removing refining method for raw ferro nickel | |
| CN208279650U (en) | A kind of steelmaking converter forging | |
| CN105369113A (en) | Process for smelting vanadium-containing molten steel by direct alloying through calcium vanadate | |
| CN201809420U (en) | Refining system for cuprocuprite and reclaimed coarse copper | |
| CN102766721A (en) | Steelmaking furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20170330 |