CN111411231A - Automatic blowing and spraying device for ferrovanadium refining - Google Patents
Automatic blowing and spraying device for ferrovanadium refining Download PDFInfo
- Publication number
- CN111411231A CN111411231A CN202010430086.7A CN202010430086A CN111411231A CN 111411231 A CN111411231 A CN 111411231A CN 202010430086 A CN202010430086 A CN 202010430086A CN 111411231 A CN111411231 A CN 111411231A
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- China
- Prior art keywords
- blowing
- ferrovanadium
- spray gun
- refining
- control module
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses an automatic blowing and spraying device for ferrovanadium refining, which belongs to the field of steel smelting equipment and comprises a blowing tank and a spray gun which are connected through a conveying pipeline, wherein the blowing tank is connected with a high-pressure inert gas source through a high-pressure pipe, the spray gun is positioned at an opening above a smelting furnace, the upper end of the spray gun is arranged on a rotating device, and the lower end of the spray gun extends into the smelting furnace. The reducing agent is automatically sprayed into the slag through the blowing and spraying device, the feeding is continuous and uniform, the range is wide, the vanadium oxide in the furnace is subjected to secondary reduction, the vanadium content in the slag is reduced, the vanadium recovery rate is improved, the reducing agent sprayed into the smelting furnace is accompanied by part of high-pressure inert gas, the slag is continuously stirred, the flowing of the slag is promoted, the separation of the ferrovanadium alloy and the slag is further promoted, and the sedimentation of alloy drops is promoted.
Description
Technical Field
The invention relates to the field of steel smelting equipment, in particular to an automatic blowing and spraying device for ferrovanadium refining.
Background
At present, the main method for smelting high-vanadium iron is an electro-aluminothermic method, about 3% -5% of residual vanadium still exists in a slag solution after aluminothermic reaction, and in order to improve the recovery rate of high-vanadium iron and reduce the production cost, the slag solution after aluminothermic reaction needs to be blown and refined to further reduce vanadium oxide in hot slag. In the refining process, whether the blowing amount, the blowing time, the blowing range and the depth of the lance inserted into the slag can be accurately controlled strictly according to the requirements of the process technology is the embodiment of good and bad blowing effect.
In the actual production process, in order to reduce residual vanadium in the slag, excessive aluminum is usually added, which causes high aluminum content in the alloy and poor surface quality, and brings more workload for the next process; meanwhile, the automation degree of adding the reducing agent in the existing high-vanadium iron refining process is low, the high-vanadium iron refining process is mostly manually operated, the working efficiency is low, the injection amount cannot be guaranteed, and the technical requirements of the injection process cannot be met.
Disclosure of Invention
In order to overcome the defects of the vanadium recovery process in the existing ferrovanadium refining, the invention aims to solve the technical problems that: provides an automatic blowing and spraying device with high automation degree and good refining effect.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a automatic blow and spout device for ferrovanadium is concise, include jetting jar and spray gun through the pipeline connection, it has high-pressure inert gas source to connect through the high-pressure tube outside on the jetting jar, the spray gun is located smelting furnace top opening part, and the spray gun upper end is installed on rotary device, and the lower extreme is deep into in the smelting furnace, in addition, still includes control module, and control module carries out automated control to high-pressure inert gas source, spray gun and rotary device's work.
Further, a feeding hopper is arranged at the top of the injection tank, and a feeding ball valve is arranged at an outlet at the bottom of the feeding hopper.
Further, a discharging ball valve is arranged at an outlet at the bottom of the injection tank, and the discharging ball valve is an electromagnetic valve capable of controlling the size of an opening and is electrically connected with the control module.
Further, be equipped with jar interior manometer on the jetting jar, be equipped with the pipeline manometer on the pipeline, manometer and pipeline manometer all with control module electric connection in the jar.
Furthermore, a control valve is arranged on the high-pressure pipe and electrically connected with the control module.
Further, the high-pressure pipe comprises two branch pipes, wherein the main blowing branch pipe is communicated with the side surface of the blowing tank, and the blowing-assisting branch pipe is communicated with the conveying pipeline.
Furthermore, one end of the conveying pipeline, which is close to the injection tank, is provided with an arc section, the switching point of the arc section and the subsequent straight section is the connecting point of the blowing-assisting branch pipe and the conveying pipeline, and the blowing direction of the blowing-assisting branch pipe is consistent with the direction of the straight section of the conveying pipeline.
Further, the spray gun is positioned at the central position of the smelting furnace, and the lower end of the spray gun extends into the smelting furnace to be 100-300mm below the liquid level during normal smelting.
Further, rotary device includes bearing frame, band pulley and motor, the spray gun upper end is rotated with the bearing frame and is connected, and the band pulley is fixed on the spray gun to link to each other through belt and motor shaft, motor and control module electric connection.
Further, the control module includes a P L C and an operation panel.
The invention has the beneficial effects that: after the aluminothermic reaction of the raw materials, the reducing agent is automatically sprayed into the molten slag through the blowing and spraying device, the feeding is continuous and uniform, the range is wide, the vanadium oxide in the furnace is subjected to secondary reduction, the vanadium content in the slag is reduced, the vanadium recovery rate is improved, and the reducing agent sprayed into the smelting furnace is accompanied by partial high-pressure inert gas, so that the molten slag is continuously stirred, the flowing of the molten slag is promoted, the separation of ferrovanadium and the slag is further promoted, and the sedimentation of alloy drops is promoted. The method has the advantages of high automation degree, simple operation, capability of obviously improving the recovery rate of the ferrovanadium, reduction of production cost, improvement of economic benefit and the like.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Marked in the figure as 1-blowing tank, 2-spray gun, 3-conveying pipeline, 4-high pressure pipe, 5-high pressure inert gas source, 6-smelting furnace, 7-rotating device, 8-P L C, 9-operation panel, 11-loading hopper, 12-feeding ball valve, 13-discharging ball valve, 14-tank pressure gauge, 31-pipeline pressure gauge, 32-arc section, 33-straight section, 41-main blowing branch pipe, 42-blowing-assistant branch pipe and 43-control valve.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in figure 1, the automatic blowing and spraying device for ferrovanadium refining comprises a blowing tank 1 and a spray gun 2 which are connected through a conveying pipeline 3, wherein the blowing tank 1 is externally connected with a high-pressure inert gas source 5 through a high-pressure pipe 4, the spray gun 2 is positioned at an opening above a smelting furnace 6, the upper end of the spray gun 2 is installed on a rotating device 7, and the lower end of the spray gun 2 extends into the smelting furnace 6.
The use process of the automatic blowing and spraying device is as follows: firstly, after the thermite reaction of raw materials, the spray gun 2 is installed in place, the lower end of the spray gun is deep into the liquid level, meanwhile, a reducing agent is put into the blowing tank 1, then, a high-pressure inert gas source 5 is started, the reducing agent is blown into the conveying pipeline 3 by the high-pressure inert gas, and finally, the reducing agent is sprayed out from the spray gun 2 along with the high-pressure gas, so that the vanadium oxide in the furnace is subjected to secondary reduction.
Compared with the traditional feeding mode, the feeding method has the advantages that high-pressure inert gas is used as a power source, so that continuous, stable and uniform material conveying can be realized; secondly, the spray gun 2 continuously rotates under the action of the rotating device 7 in the process of spraying materials, so that the blowing range is improved, the materials are more dispersed, and the reaction efficiency is accelerated; and thirdly, the reducing agent sprayed into the smelting furnace 6 is also accompanied by part of high-pressure inert gas, so that the molten slag can be continuously stirred, the flowing of the molten slag is promoted, the separation of the ferrovanadium alloy and the slag is further promoted, and the sedimentation of alloy drops is promoted. The whole process can be automatically controlled by a control module almost, so that the labor intensity and the influence caused by human factors can be reduced.
In order to add a reducing agent into the blowing tank 1 conveniently, a feeding hopper 11 is arranged at the top of the blowing tank 1, and a feeding ball valve 12 is arranged at an outlet at the bottom of the feeding hopper 11. The feeding ball valve 12 is opened when the reducing agent is added, and the feeding ball valve is closed after the feeding is finished, so that the operation is simple, convenient and fast.
And a discharging ball valve 13 is arranged at the outlet at the bottom of the injection tank 1, and the discharging ball valve 13 is an electromagnetic valve capable of controlling the opening size and is electrically connected with the control module. When the high-pressure inert gas source 5 is used for blowing and spraying the reducing agent, the pressure in the blowing tank 1 is gradually increased when the gas enters the blowing tank, and the conveying force of the material is also gradually increased, so that if the blowing and spraying are started from the beginning of the high-pressure inert gas source 5, the early-stage feeding is easy to cause uneven feeding. Having had ejection of compact ball valve 13, can guaranteeing on the one hand that the jar material can not fall into pipeline 3 and control before blowing and spout and open and stop, on the other hand can start 5 periods of high-pressure inert gas source, wait to open ejection of compact ball valve 13 again after reaching a stable pressure in the jar and blow and spout, can guarantee the stability of pan feeding earlier stage.
Further, be equipped with interior manometer 14 on the jetting jar 1, be equipped with pipeline manometer 31 on the pipeline 3, manometer 14 and pipeline manometer 31 all with control module electric connection in the jar. The control module can obtain current flow through the value of comparing interior manometer 14 of jar and pipeline pressure gauge 31, and the control to material feed rate can be realized to the opening size of rethread control ejection of compact ball valve 13.
In addition to controlling the flow rate by controlling the outlet ball valve 13, it is also possible to control the gas flow rate of the high pressure inert gas source 5. Therefore, the control valve 43 can be arranged on the high-pressure pipe 4, and the control valve 43 is also electrically connected with the control module to realize automatic control. The control valve can be used independently, and can also be matched with the discharging ball valve 13 to realize the material flow control.
The high-pressure pipe 4 comprises two branch pipes, wherein a main blowing branch pipe 41 leads to the side surface of the blowing tank 1, and an auxiliary blowing branch pipe 42 is communicated with the conveying pipeline 3. The main blowing branch pipe 41 is mainly responsible for pressing the materials into the conveying pipeline 3, and the blowing-assisting branch pipe 42 can supplement airflow for the conveying pipeline 3, so that the materials are dispersed and conveyed along with the airflow, and the stable and continuous blowing of the reducing agent can be ensured.
In order to make the main blowing branch pipe 41 and the blowing-assisting branch pipe 42 play a better role, one end of the conveying pipeline 3 close to the blowing tank 1 is set to be a section of arc-shaped section 32, the switching point of the arc-shaped section 32 and the subsequent straight section 33 is the connecting point of the blowing-assisting branch pipe 42 and the conveying pipeline 3, and the blowing direction of the blowing-assisting branch pipe 42 is consistent with the direction of the straight section 33 of the conveying pipeline 3. The arc-shaped section 32 is arranged, so that materials can be stably transited to the straight section 33, vertical movement is converted into horizontal movement, the materials are matched with the blowing-assisting branch pipe 42 to realize equidirectional transportation, and the conveying effect can be further improved. In addition, in order to ensure safe and smooth transportation of the materials in the conveying pipeline 3, the conveying pipeline 3 is preferably selected from a high-pressure hose.
Besides controlling the feeding uniformity of the reducing agent, the improvement of the contact area of the reducing agent and the slag solution is also an important factor for improving the recovery rate of the ferrovanadium. Therefore, in order to make the mixture uniform, the lance 2 should be located at the center of the smelting furnace 6, and the lower end of the lance should be 100 mm and 300mm deep below the liquid level of the smelting furnace 6 during normal smelting.
The specific structure of the rotating device 7 comprises a bearing seat, a belt wheel and a motor, wherein the upper end of the spray gun 2 is rotatably connected with the bearing seat, the belt wheel is fixed on the spray gun 2 and is connected with a motor rotating shaft through a belt, and the motor is electrically connected with the control module. The rotating speed of the spray gun 2 can be controlled by controlling the rotating speed of the motor, so that the charging uniformity is improved, and the slag is continuously stirred by the high-pressure inert gas with partial rotation, so that the flow of the slag is promoted, and the reaction efficiency is improved.
For the control module, there is a mature and reliable scheme in the prior art, such as the form of P L C8 plus the control panel 9, which has low cost, simple operation and control, convenience and reliability.
In conclusion, the method has the advantages of high automation degree, simplicity in operation, capability of obviously improving the recovery rate of the ferrovanadium, reduction in production cost, improvement in economic benefit and the like, and has good practicability and application prospect.
Claims (10)
1. A automatic blow and spout device for ferrovanadium is concise, characterized by: include jetting jar (1) and spray gun (2) of connecting through pipeline (3), be external through high-pressure pipe (4) on jetting jar (1) and have high-pressure inert gas source (5), spray gun (2) are located smelting furnace (6) top opening part, and install on rotary device (7) spray gun (2) upper end, and the lower extreme is deepened in smelting furnace (6), in addition, still includes control module, and control module carries out automated control to the work of high-pressure inert gas source (5), spray gun (2) and rotary device (7).
2. The automatic blowing device for ferrovanadium refining as claimed in claim 1, wherein: the top of the injection tank (1) is provided with a feeding hopper (11), and an outlet at the bottom of the feeding hopper (11) is provided with a feeding ball valve (12).
3. The automatic blowing device for ferrovanadium refining as claimed in claim 1, wherein: and a discharge ball valve (13) is arranged at the outlet at the bottom of the injection tank (1), and the discharge ball valve (13) is an electromagnetic valve capable of controlling the opening size and is electrically connected with the control module.
4. The automatic blowing apparatus for ferrovanadium refining as set forth in claim 3, wherein: be equipped with interior manometer (14) of jar on jetting jar (1), be equipped with pipeline manometer (31) on pipeline (3), manometer (14) and pipeline manometer (41) all with control module electric connection in the jar.
5. The automatic blowing device for ferrovanadium refining as claimed in claim 1, wherein: and the high-pressure pipe (4) is provided with a control valve (43), and the control valve (43) is electrically connected with the control module.
6. The automatic blowing apparatus for ferrovanadium refining as set forth in claim 5, wherein: the high-pressure pipe (4) comprises two branch pipes, wherein the main blowing branch pipe (41) leads to the side surface of the blowing tank (1), and the blowing-assisting branch pipe (42) is communicated with the conveying pipeline (3).
7. The automatic blowing device for ferrovanadium refining as claimed in claim 6, wherein: one end of the conveying pipeline (3) close to the blowing tank (1) is provided with a section of arc-shaped section (32), the switching point of the arc-shaped section (32) and the subsequent straight section (33) is the connection point of the blowing-assisting branch pipe (42) and the conveying pipeline (3), and the blowing direction of the blowing-assisting branch pipe (42) is consistent with the direction of the straight section (33) of the conveying pipeline (3).
8. The automatic blowing device for ferrovanadium refining as claimed in claim 1, wherein: the spray gun (2) is positioned at the central position of the smelting furnace (6), and the lower end of the spray gun is extended to be 100-300mm below the liquid level of the smelting furnace (6) during normal smelting.
9. The automatic blowing device for ferrovanadium refining as claimed in claim 1, wherein: the rotating device (7) comprises a bearing seat, a belt wheel and a motor, the upper end of the spray gun (2) is rotatably connected with the bearing seat, the belt wheel is fixed on the spray gun (2) and is connected with a motor rotating shaft through a belt, and the motor is electrically connected with the control module.
10. The automatic blowing device for ferrovanadium refining as claimed in any one of claims 1 to 9, wherein the control module comprises P L C (8) and an operation panel (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010430086.7A CN111411231A (en) | 2020-05-20 | 2020-05-20 | Automatic blowing and spraying device for ferrovanadium refining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010430086.7A CN111411231A (en) | 2020-05-20 | 2020-05-20 | Automatic blowing and spraying device for ferrovanadium refining |
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| Publication Number | Publication Date |
|---|---|
| CN111411231A true CN111411231A (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010430086.7A Pending CN111411231A (en) | 2020-05-20 | 2020-05-20 | Automatic blowing and spraying device for ferrovanadium refining |
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| CN (1) | CN111411231A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943872A (en) * | 2021-09-22 | 2022-01-18 | 河钢承德钒钛新材料有限公司 | Device and method for producing aluminum-based intermediate alloy by aluminothermic reduction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07278638A (en) * | 1994-04-15 | 1995-10-24 | Nippon Steel Corp | Converter refining method and lance for refining |
| RU2105072C1 (en) * | 1997-04-25 | 1998-02-20 | Петренев Владимир Вениаминович | Method for production of steel naturally alloyed with vanadium in conversion of vanadium iron in oxygen steel-making converters by monoprocess with scrap consumption up to 30% |
| CN201010667Y (en) * | 2006-09-21 | 2008-01-23 | 攀枝花新钢钒股份有限公司 | Powder-spraying device for ferrovanadium refinement |
| CN101148733A (en) * | 2006-09-21 | 2008-03-26 | 攀枝花新钢钒股份有限公司 | Vanadium iron spraying powder refining technique |
| CN101967532A (en) * | 2010-11-11 | 2011-02-09 | 河北钢铁股份有限公司承德分公司 | Powder spraying device and method for efficient vanadium extracting process of converter |
| CN102051519A (en) * | 2011-01-21 | 2011-05-11 | 河北钢铁股份有限公司承德分公司 | Lean slag process in vanadium iron smelting and special device |
-
2020
- 2020-05-20 CN CN202010430086.7A patent/CN111411231A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07278638A (en) * | 1994-04-15 | 1995-10-24 | Nippon Steel Corp | Converter refining method and lance for refining |
| RU2105072C1 (en) * | 1997-04-25 | 1998-02-20 | Петренев Владимир Вениаминович | Method for production of steel naturally alloyed with vanadium in conversion of vanadium iron in oxygen steel-making converters by monoprocess with scrap consumption up to 30% |
| CN201010667Y (en) * | 2006-09-21 | 2008-01-23 | 攀枝花新钢钒股份有限公司 | Powder-spraying device for ferrovanadium refinement |
| CN101148733A (en) * | 2006-09-21 | 2008-03-26 | 攀枝花新钢钒股份有限公司 | Vanadium iron spraying powder refining technique |
| CN101967532A (en) * | 2010-11-11 | 2011-02-09 | 河北钢铁股份有限公司承德分公司 | Powder spraying device and method for efficient vanadium extracting process of converter |
| CN102051519A (en) * | 2011-01-21 | 2011-05-11 | 河北钢铁股份有限公司承德分公司 | Lean slag process in vanadium iron smelting and special device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943872A (en) * | 2021-09-22 | 2022-01-18 | 河钢承德钒钛新材料有限公司 | Device and method for producing aluminum-based intermediate alloy by aluminothermic reduction method |
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Application publication date: 20200714 |