CN211425052U

CN211425052U - Magnesium metallurgical furnace

Info

Publication number: CN211425052U
Application number: CN201922199850.XU
Authority: CN
Inventors: 李运雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-09-04
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses a metallurgical stove of magnesium, including the stove body, the top of stove body is equipped with the vacuum package, and the vacuum package is divided into real empty room and feeding tank with the vacuum package through outer division wall, and real empty room and feeding tank are linked together through the UNICOM mouth that is located outer division wall bottom, and the feeding tank top is uncovered, and real empty room top is equipped with the apron, is equipped with argon gas access mouth on the apron, is equipped with interior partition wall in the real empty room, and interior partition wall's height that highly is higher than the UNICOM mouth, and real empty room is linked together through the inside of vacuum package discharging pipe with the stove body. The utility model can directly add molten ferrosilicon, and can reduce energy loss; in the charging process, the sealing performance is good, and the magnesium steam can be effectively prevented from overflowing; the utility model discloses simple structure, ferrosilicon top-down is reinforced, and reinforced stroke is short, is difficult for causing the jam.

Description

Magnesium metallurgical furnace

Technical Field

The utility model relates to the technical field of metal smelting, especially, relate to a metallurgical stove of magnesium.

Background

At present, two main processes are adopted for smelting magnesium: silicothermic and electrolytic processes. The silicothermic process needs to smelt ferrosilicon which is high-temperature molten liquid at the moment, the temperature reaches 1300 degrees, then the ferrosilicon is cooled, crushed, stirred with magnesium oxide, canned, finally heated to 1200 degrees, magnesium vapor is obtained under the vacuum condition, the magnesium vapor is condensed to obtain magnesium solution, and magnesium ingots are obtained through casting. This heating, in turn, cools the reheating process, wasting a large amount of energy; in the transfer of ferrosilicon during reaction, the sealing of the magnesium metallurgical furnace and the like are also big problems, the requirements on supporting equipment are high, the operation difficulty is high, the problems of leakage and the like easily occur, once the leakage problem occurs, the vacuum degree during smelting is influenced, and the problems of magnesium steam collection, magnesium steam concentration and the like are influenced; and during the transfer of the ferrosilicon, the ferrosilicon can be blocked due to the problems of stroke and the like, so that the reaction is influenced.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects, the utility model provides a metallurgical furnace of magnesium.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a metallurgical stove of magnesium, is including the stove body and be located the outer coil of stove body oven, the top of stove body is equipped with the vacuum package, the vacuum package will through outer division wall the vacuum package divide into real empty room and feeding tank, real empty room and feeding tank are linked together through being located the UNICOM mouth of outer division wall bottom, feeding tank top is uncovered, real empty room top is equipped with the apron, be equipped with argon gas access mouth on the apron, be equipped with the interior partition wall in the real empty room, the height that highly is higher than the UNICOM mouth of interior partition wall, real empty room through vacuum package discharging tube with the inside of stove body is linked together.

Preferably, the top of the furnace body is provided with a vacuum bag discharging pipe interface, and the vacuum bag discharging pipe is inserted in the vacuum bag discharging pipe interface in a matching manner.

Preferably, the cover plate is detachably connected to the top of the vacuum chamber.

Preferably, the bottom of the vacuum bag is provided with a plurality of support legs, and the support legs are placed on the top of the furnace body to support the vacuum bag.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model can directly add molten ferrosilicon, and can reduce energy loss;

2. in the charging process, the sealing performance is good, and the magnesium steam can be effectively prevented from overflowing;

3. the utility model discloses simple structure, ferrosilicon top-down is reinforced, and reinforced stroke is short, is difficult for causing the jam.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the present invention;

fig. 3 is an isometric cross-sectional view of fig. 1.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 3, a preferred embodiment of the present invention provides a mg metallurgical furnace, which includes a furnace body 1 and a coil 2 located outside a furnace wall of the furnace body, wherein a material charging opening 16 for adding materials such as magnesium oxide, lime, fluorite, etc. is provided at a top of the furnace body 1, an interface 4 for connecting a mg steam condenser, a vacuum pump, etc. is provided on a sidewall of an upper portion, and a slag discharge opening 3 for discharging slag, etc. is provided at a bottom of the furnace body.

The top of the furnace body 1 is provided with a vacuum bag 11, the vacuum bag 11 divides the vacuum bag 11 into a vacuum chamber 7 and a charging pool 14 through an outer partition wall 13, the vacuum chamber 7 and the charging pool 14 are communicated through a communicating port 17 positioned at the bottom of the outer partition wall 13, the communicating port 17 can be a through hole at the bottom of the outer partition wall 13 or a through hole formed by the bottom of the outer partition wall 13 not contacting with the bottom of the vacuum bag 11, the top of the charging pool 14 is open, the top of the vacuum chamber 7 is provided with a cover plate 15, the cover plate 15 is provided with an argon access port 8, the argon access port 8 is used for connecting an argon tank, an inner partition wall 12 is arranged in the vacuum chamber 7, the orientation of the inner partition wall 12 is consistent with that of the outer partition wall 13, the vacuum chamber 7 can be divided into two parts, the height of the inner partition wall 12 is higher than that of the communicating port 17, and the vacuum chamber 7 is communicated with the inside of the furnace body 1 through the vacuum bag discharging pipe 6. Specifically, a vacuum bag discharging pipe interface 5 is arranged at the top of the furnace body 1, and a vacuum bag discharging pipe 6 is inserted into the vacuum bag discharging pipe interface 5 in a matching manner.

In the preferred embodiment, the cover 15 is removably attached to the top of the vacuum chamber 7, in practice, the cover 15 is placed on top of the vacuum chamber 7 and sealed, and the cover 15 can be removed when not in use.

The bottom of the vacuum bag 11 is provided with a plurality of legs 18, and the legs 18 are placed on the top of the oven body 1 to support the vacuum bag 11. In the preferred embodiment, the vacuum bag 11 is movable, i.e. is installed on the oven body 1 when in use, and can be detached when not in use, thereby facilitating replacement and cleaning.

The following steps of the method for realizing magnesium smelting by using the magnesium metallurgical furnace of the utility model specifically comprise:

1. the inner side of the furnace body 1 is made of carbon, the outer side of the furnace body is made of clay refractory material, and the furnace top is made of clay refractory material. The vacuum ladle 11 is made of clay refractory material, and a long nozzle for steelmaking is used as the discharge pipe 6 of the vacuum ladle.

2. The magnesium steam condenser and the vacuum pump are connected with the interface 4 on the furnace body 1.

3. The slag discharge port 3 is blocked by stemming.

4. Magnesium oxide, lime, fluorite are added into the furnace through a material feed opening 16, and then the material feed opening 16 is sealed.

5. And placing the vacuum bag at the top of the furnace body 11, inserting the lower end of a vacuum bag discharging pipe 6 of the vacuum bag 11 into a vacuum bag discharging pipe interface 5, and sealing a gap between the vacuum bag discharging pipe 6 and the vacuum bag discharging pipe interface 5.

6. The argon tank was connected to argon inlet 8.

7. Pouring a small amount of aluminum liquid into the vacuum bag 11 from the opening of the charging pool 14, wherein the aluminum liquid is positioned between the inner partition wall 12 and the charging pool 14 under the action of the inner partition wall 12, the height of the poured aluminum liquid is slightly higher than the communicating opening 17 at the bottom of the outer partition wall 13 of the vacuum bag 11, and the aluminum liquid is cooled by pumping water to solidify the aluminum liquid, and the communicating opening 17 is sealed by aluminum so that the vacuum chamber 7 and the furnace body 1 are internally sealed.

8. The vacuum pump is started to evacuate the interior of the furnace body 1.

9. And opening a valve of the argon tank, and filling argon into the furnace body 1 through the argon inlet 8 until the pressure in the furnace is slightly greater than the atmospheric pressure.

10. High temperature melting ferrosilicon is continuously added to the charging pool 14 of the vacuum ladle 11, because the ferrosilicon temperature is very high, the melting point of aluminium is very low (600 multi-degrees) again, the aluminium melts soon and has the mobility, the UNICOM mouth 17 is opened, the melting ferrosilicon through the UNICOM mouth 17, cross interior partition wall 12 and get into vacuum chamber 7, at last through vacuum ladle discharge pipe 6 get into furnace body 1 inside.

11. And (3) switching on a power supply of the coil 2, and heating the ferrosilicon, the magnesium oxide and the like in the furnace by an electromagnetic induction principle.

12. Under the conditions of high temperature and argon protection, silicon iron reacts with magnesium oxide to generate silicon dioxide and magnesium steam, the magnesium steam enters a magnesium steam condenser through a port 4 and is condensed to obtain magnesium solution, finally, magnesium ingots are obtained by casting, the silicon dioxide and lime form furnace slag, and fluorite plays a role in reducing the melting point of the furnace slag and improving the fluidity of the furnace slag.

13. Because the height of interior partition wall 12 of vacuum package 11 is higher than the height of outer partition wall 13 bottom antithetical couplet opening 17, UNICOM opening 17 has ferrosilicon melt all the time and seals, the density of magnesium steam is less than the density of ferrosilicon solution, magnesium steam will overflow vacuum package 11 and just need overcome antithetical couplet opening 17 and the pressure of remaining ferrosilicon melt in the charging pond 14, as long as control furnace internal pressure is not too high, charging pond 14 height is not low, magnesium steam just can not overflow from UNICOM opening 17, but go out from interface 4 and get into the condensation of magnesium steam condenser, safety in production has also ensured.

14. After the reaction is finished, the slag discharging port 3 is opened to discharge the slag.

15. Argon is introduced through an argon inlet 8 to purge the residual magnesium steam in the furnace.

16. And opening the material feeding port 16, the vacuum bag discharging pipe port 5 and the like, removing the vacuum bag 11, and simultaneously removing the cover plate 15 of the vacuum bag 11.

17. And (4) cleaning the residual ferrosilicon in the vacuum bag 11, dredging the communication port 17 and preparing for the production of the next furnace.

Through the structure and the realization process, the utility model can directly add the molten ferrosilicon, and can reduce the energy loss; in the charging process, the sealing performance is good, and the magnesium steam can be effectively prevented from overflowing; the utility model has simple structure and convenient construction, the vacuum bag is positioned above the furnace body, the ferrosilicon is fed from top to bottom, the feeding stroke is short, and the blockage is not easy to cause; and the vacuum bag is movable, and is convenient to replace and clean. The utility model solves the problems of the prior magnesium smelting furnace, has small potential safety hazard, strong practicability and is worth popularizing and using.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A metallurgical magnesium furnace, comprising a furnace body (1) and a coil (2) positioned outside the furnace wall of the furnace body, characterized in that: the vacuum furnace is characterized in that a vacuum bag (11) is arranged at the top of the furnace body (1), the vacuum bag (11) is divided into a vacuum chamber (7) and a charging pool (14) through an outer partition wall (13), the vacuum chamber (7) and the charging pool (14) are communicated through a communicating port (17) located at the bottom of the outer partition wall (13), the top of the charging pool (14) is open, a cover plate (15) is arranged at the top of the vacuum chamber (7), an argon gas access port (8) is formed in the cover plate (15), an inner partition wall (12) is arranged in the vacuum chamber (7), the height of the inner partition wall (12) is higher than that of the communicating port (17), and the vacuum chamber (7) is communicated with the inside of the furnace body (1) through a vacuum bag discharging pipe (6).

2. The magnesium metallurgical furnace of claim 1, wherein: the top of the furnace body (1) is provided with a vacuum bag discharging pipe interface (5), and the vacuum bag discharging pipe (6) is inserted into the vacuum bag discharging pipe interface (5) in a matching manner.

3. The magnesium metallurgical furnace of claim 1, wherein: the cover plate (15) is detachably connected with the top of the vacuum chamber (7).