CN114717416A

CN114717416A - Two-section type rotary silicon-series iron alloy ore thermoelectric furnace

Info

Publication number: CN114717416A
Application number: CN202210360890.1A
Authority: CN
Inventors: 唐琳; 熊昊华
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-07
Filing date: 2022-04-07
Publication date: 2022-07-08
Anticipated expiration: 2042-04-07
Also published as: CN114717416B

Abstract

The invention discloses a two-section type rotary silicon-series ferroalloy ore-smelting electric furnace, relates to the technical field of electric furnaces, and can reduce furnace charge adhesion in the furnace and facilitate the collection of carbon monoxide. The furnace comprises a furnace cover, an upper furnace body and a lower furnace body, wherein the upper furnace body and the lower furnace body are matched to form a hearth for placing furnace burden; the upper furnace body is provided with a first rotating mechanism for driving the upper furnace body to rotate around the axis of the device; and the lower furnace body is provided with a second rotating mechanism for driving the lower furnace body to rotate around the axis of the device. The invention avoids the discharge of carbon monoxide and the combustion caused by the contact with air through the sealed hearth, thereby facilitating the collection of carbon monoxide; meanwhile, the whole furnace burden is always in a disordered rotation state in the production process through different rotations between the upper furnace body and the lower furnace body, and the bonding of the furnace burden is reduced.

Description

Two-section type rotary silicon-series iron alloy ore thermoelectric furnace

Technical Field

The invention relates to the technical field of electric furnaces, in particular to a two-section type rotary silicon-series iron alloy ore thermoelectric furnace.

Background

The conventional silicon-based ferroalloy ore thermoelectric furnace requires reduction reaction of silicon dioxide in silica by carbon during the production process, and silicon and carbon monoxide are obtained at this time. Silica is easy to be in a molten state when reduction reaction is not carried out, so that furnace burden adhesion is caused, heat exchange and reduction reaction in a furnace are influenced, a furnace door needs to be opened to smash the furnace in the furnace, furnace burden adhesion in the furnace is avoided, therefore, sealing of a furnace body cannot be realized, air enters the furnace, and meanwhile, carbon monoxide generated in the production process is easy to contact with air to burn, production of silicon-based ferroalloy is influenced, a large amount of carbon dioxide is discharged, the environment is influenced, a large amount of chemical energy generated during carbon monoxide burning cannot be utilized, production benefit cannot be improved, and low-carbon and double-control production cannot be achieved.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: provided is an electric furnace device which can reduce the bonding of furnace burden in a furnace and can facilitate the collection of carbon monoxide.

The invention is realized by the following technical scheme:

a two-section type rotary silicon-series iron-alloy ore thermoelectric furnace comprises a furnace cover, an upper furnace body and a lower furnace body which are sequentially arranged along the axis of the device, wherein the upper furnace body and the lower furnace body are matched to form a hearth for placing furnace materials;

the upper furnace body is provided with a first rotating mechanism for driving the upper furnace body to rotate around the axis of the device;

and the lower furnace body is provided with a second rotating mechanism for driving the lower furnace body to rotate around the axis of the device.

Optionally, an electrode rod inserted into the hearth is arranged on the furnace cover, and the end of the electrode rod is close to the bottom of the hearth.

Optionally, a flue for discharging carbon monoxide is connected to the furnace cover.

Optionally, the first rotating mechanism includes a driving rotating member and a driven rotating member, the driving rotating member is used for driving the upper furnace body to rotate, and the driven rotating member is used for supporting the upper furnace body and positioning a rotating path of the upper furnace body.

Further optionally, the driven rotating part comprises a rotating support and a first circular ring part fixed at the edge of the upper furnace body, and the rotating support is provided with at least three riding wheels and at least three blocking wheels;

the riding wheel is circumferentially arranged at the bottom of the first circular ring part around the axis of the device and supports the bottom of the first circular ring part; the catch wheels are uniformly arranged on the outer side of the first circular part around the axis of the device and extrude the outer side surface of the first circular part;

when the upper furnace body rotates, the riding wheel and the blocking wheel are driven by the first circular ring part to synchronously rotate.

Further optionally, the driving rotating member includes a first driving device and a second circular ring portion fixed at the edge of the upper furnace body, and the first driving device is connected with a thumb wheel in a transmission manner; the outer side circumference of second ring portion evenly is provided with a plurality of pins, the thumb wheel with the pin adaptation, when first drive arrangement drive thumb wheel rotates, the thumb wheel pushes in proper order the pin removes and drives the upper portion furnace body is rotatory.

Optionally, the second rotating mechanism includes a supporting member and a base, the supporting member is connected to the bottom of the lower furnace body, and a rotating portion for driving the supporting member and the base to rotate relatively is disposed between the supporting member and the base;

the rotation portion includes second drive arrangement, transfer shaft and at least three supporting wheel, second drive arrangement with the transfer shaft transmission is connected and can be driven the transfer shaft rotates around the device axis, the transfer shaft pass through the pull rod with the pivot of supporting wheel is connected, the supporting wheel is in around device axis circumference setting on the base and right support piece supports, works as the drive of second drive arrangement when the transfer shaft rotates, the transfer shaft drives the supporting wheel rolls along the removal route around the device axis.

Further optionally, one side of the supporting piece facing the supporting wheel is provided with a first limiting track, one side of the base facing the supporting wheel is provided with a second limiting track, the supporting wheel faces the two side wheel faces of the supporting piece and the base are respectively clamped in the first limiting track and the second limiting track, and the first limiting track and the second limiting track are used for enabling the supporting wheel to roll only along a moving path around the axis of the device.

Optionally, the support member includes a bracket and a spoke beam, the bracket is connected to the lower furnace body, the spoke beam is disposed on one side of the bracket away from the lower furnace body, and an insulating pad is disposed between the spoke beam and the lower furnace body.

Optionally, a gas seal is adopted between the upper furnace body and the lower furnace body.

The invention has the following advantages and beneficial effects:

1. according to the two-section type rotary silicon-series iron-alloy ore thermoelectric furnace provided by the embodiment of the invention, the furnace cover, the upper furnace body and the lower furnace body are matched to form a relatively sealed furnace chamber so as to isolate the communication between the furnace chamber and the outside, so that air is prevented from entering the furnace, carbon monoxide is prevented from being discharged and being contacted with the air to combust, and therefore, the carbon monoxide is conveniently collected and the generation of carbon dioxide is reduced; through rotation that upper portion furnace body and lower part furnace body go on with different gyrotary or different rotational speeds drives the interior furnace charge that is in upper strata and lower floor respectively of stove and rotates with different gyrotary or different rotational speeds, and then makes whole furnace charge be in a comparatively unordered rotation state all the time in process of production, reduces the possibility that the furnace charge bonded each other, realizes reducing or avoids the production process of pounding the stove, avoids pounding the revealing or burning of stove in-process carbon monoxide. Meanwhile, the rotation of the furnace burden can make the whole heating process more uniform, and the finished product yield of the furnace burden is further improved;

2. according to the two-section type rotary silicon-based iron alloy ore thermoelectric furnace provided by the embodiment of the invention, the electrode bar forms a three-phase electrode to heat the furnace burden, the electrode bar is relatively fixed at the moment, the electrode bar and the upper furnace body and the lower furnace body move relatively when the upper furnace body and the lower furnace body rotate, and the electrode bar can further stir the furnace burden in the hearth, so that the furnace burden rotates more disorderly, and the bonding of the furnace burden is further reduced; simultaneously, the tip of electrode bar is close the bottom of furnace, can further ensure the stirring effect of electrode bar, the furnace charge mixes more evenly this moment, and furnace charge resistance between the electrode tends to unanimity, is favorable to guaranteeing the temperature of furnace lower part, is favorable to going on of carborundum decomposition reaction and the sediment is arranged at the bottom of the stove in the furnace, avoids the sediment of stove bottom to pile up.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic front view of example 1 of the present invention;

FIG. 2 is a schematic view at A in FIG. 1;

FIG. 3 is a front sectional view of example 1 of the present invention;

FIG. 4 is a cross-sectional view taken at B-B of FIG. 3;

fig. 5 is a schematic view at C in fig. 3.

Reference numbers and corresponding part names in the drawings:

1-furnace cover, 11-electrode bar, 2-upper furnace body, 211-rotating bracket, 212-riding wheel, 213-blocking wheel, 214-first circular part, 221-first driving device, 222-vertical shaft, 223-shifting wheel, 224-second circular part, 225-pin, 3-lower furnace body, 311-bracket, 312-spoke beam, 313-first limit track, 314-second limit track, 315-base, 321-second driving device, 322-middle rotating shaft, 323-supporting wheel, 324-pull rod, 4-furnace chamber and 5-shell.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.

Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present invention.

Example 1:

a two-section type rotary silicon-series iron-alloy ore thermoelectric furnace is shown in figures 1 to 5 and comprises a furnace cover 1, an upper furnace body 2 and a lower furnace body 3 which are sequentially arranged from top to bottom along the axis of the device, wherein the lower furnace body 3 is generally in a cylindrical structure with an open end, the upper furnace body 2 is generally in an annular structure matched with the lower furnace body 3, the upper furnace body 2 and the lower furnace body 3 are matched to form a hearth 4 for placing furnace burden, and the furnace cover 1 covers the opening of the hearth 4 and is used for sealing the hearth 4;

the upper furnace body 2 is provided with a first rotating mechanism for driving the upper furnace body 2 to rotate around the axis of the device;

and a second rotating mechanism for driving the lower furnace body 3 to rotate around the axis of the device is arranged on the lower furnace body 3, and the rotating directions of the upper furnace body 2 and the lower furnace body 3 are opposite or the rotating speeds of the upper furnace body and the lower furnace body are different.

Through the cooperation of bell 1, upper portion furnace body 2 and lower part furnace body 3, form sealed furnace 4 relatively to this isolated furnace 4 and external intercommunication have avoided the air to get into the stove from this, and then avoid the discharge of carbon monoxide and take place the burning with the air contact, are convenient for collect carbon monoxide and reduce the production of carbon dioxide from this.

At the moment, the furnace burden in the upper layer and the lower layer in the furnace is driven to rotate in different rotation directions or different rotation speeds through the rotation of the upper furnace body 2 and the lower furnace body 3 in different rotation directions or different rotation speeds, so that the whole furnace burden is always in a disordered rotation state in the production process, the possibility of mutual bonding of the furnace burden is reduced, the production process of furnace charge smashing is reduced or avoided, and the leakage or combustion of carbon monoxide in the furnace charge smashing process is avoided. Meanwhile, the rotation of the furnace burden can make the whole heating process more uniform, and the finished product yield of the furnace burden is further improved.

The first rotating mechanism and the second rotating mechanism can be connected into a PLC control system of the electric furnace so as to adjust the rotating speed or the rotating direction of the upper furnace body 2 and the lower furnace body 3 according to the requirement of the production process.

The silicon-based iron alloy includes, but is not limited to, ferrosilicon, industrial silicon, silicon-aluminum alloy, silicon-aluminum-iron, silicon-calcium alloy, silicon-calcium-iron, silicon-calcium-aluminum alloy, silicon-barium-aluminum alloy, silicon-barium-calcium alloy, silicon-calcium-barium-aluminum alloy, silicon-chromium alloy, and the like.

Wherein the furnace cover 1 is supported and fixed by a fixed bracket fixed relative to the ground or a platform and is relatively fixed when the upper furnace body 2 and the lower furnace body 3 rotate, so that corresponding accessories or pipelines participating in heating furnace burden are arranged on the furnace cover 1.

Wherein, the outer side of the lower furnace body 3 is sleeved with a furnace shell which can protect the rotation process of the lower furnace body 3.

At this time, a plurality of electrode rods 11 inserted into the hearth 4 are arranged on the furnace cover 1, three-phase electrodes are formed by the electrode rods 11 to heat the furnace burden, at this time, the electrode rods 11 are relatively fixed, when the upper furnace body 2 and the lower furnace body 3 rotate, the electrode rods 11 rotate relative to the upper furnace body 2 and the lower furnace body 3, at this time, the electrode rods 11 can further stir the furnace burden in the hearth 4, so that the furnace burden rotates more disorderly, and the bonding of the furnace burden is further reduced. Simultaneously, the tip of electrode bar 11 is close the bottom of furnace 4 can further ensure the stirring effect of electrode bar 11, and the furnace charge mixes more evenly this moment, and furnace charge resistance between the electrode tends to unanimity, is favorable to guaranteeing the temperature of furnace 4 lower part, is favorable to going on of carborundum decomposition reaction and the sediment of stove bottom in furnace 4, avoids stove bottom dregs to pile up.

In one or more embodiments, a flue for discharging carbon monoxide is connected to the furnace cover 1. The carbon monoxide can be directly led out through the flue, so that the carbon monoxide can be conveniently received, the flue can be directly communicated with a coal gas power generation system, the carbon monoxide directly enters the coal gas power generation system for power generation, and about 50% of the input electric quantity of the electrode rod 11 can be recovered through inspection, so that the energy consumption in production operation is greatly reduced, the product cost is reduced, corresponding resources are saved, and the production is in a low-carbon and double-control state.

For the first rotating mechanism, in one or more embodiments, the first rotating mechanism includes a driving rotating member and a driven rotating member, the driving rotating member is used for driving the upper furnace body 2 to rotate, and the driven rotating member is used for supporting the upper furnace body 2 so as to avoid or reduce friction between the upper furnace body 2 and the lower furnace body 3, so that the service life of the electric furnace is prolonged, and the rotating path of the upper furnace body 2 is positioned, so that the upper furnace body 2 can only rotate around the axis of the device all the time.

For the driven rotation piece, can be the position that upper portion furnace body 2 and lower part furnace body 3 draw close each other respectively along vertical be provided with the slider and with the annular spout of slider adaptation the tank bottom of annular spout set up in with the gyro wheel of slider contact, at this moment upper portion furnace body 2 obtains supporting through the cooperation of slider with the gyro wheel to sliding friction that produces when contacting each other between upper portion furnace body 2 and the lower part furnace body 3 changes rolling friction into, wearing and tearing when having greatly reduced the rotation, the slider only can move along the direction around the device axis in the annular spout simultaneously, through the restriction of annular spout to the slider, makes upper portion furnace body 2 only can rotate around the device axis. Furthermore, the sliding block may also be in an annular structure, and the sliding block is engaged with the annular chute to seal a gap therebetween, so as to prevent gas or burden from leaking out from the gap therebetween (the driven rotating member is not shown in the figure).

As shown in fig. 2, the furnace body may include a rotating bracket 211 and a first circular ring 214 fixed to the edge of the upper furnace body 2, the first circular ring 214 takes the axis of the device as an axis, and the rotating bracket 211 is provided with at least 3 riding wheels 212 and at least 3 catch wheels 213; the riding wheel 212 is circumferentially arranged at the bottom of the first circular part 214 around the axis of the device, and supports the bottom of the first circular part 214; the catch wheels 213 are uniformly arranged outside the first circular part 214 around the axis of the device and extrude the outer side surface of the first circular part 214; when the upper furnace body 2 rotates, the riding wheels 212 and the catch wheels 213 are driven by the first circular part 214 to rotate synchronously.

The outer side referred to in this embodiment is the side of the counterpart facing away from the axis of the device.

At this time, the upper furnace body 2 is supported by the riding wheels 212 to form a certain gap with the lower furnace body 3, so that friction between the upper furnace body and the lower furnace body 3 in the rotating process is avoided. The whole upper furnace body 2 is limited in the rotation range through the extrusion of the baffle wheel 213 on the first circular ring part 214 and the support of the riding wheel 212 on the first circular ring part 214, so that the upper furnace body 2 is prevented from shifting in the rotation process. The rollers 212 and the catch rollers 213 are provided to ensure smooth rotation of the upper furnace body 2.

In this case, the gap between the upper furnace body 2 and the lower furnace body 3 can be sealed in a non-contact manner to prevent leakage at the gap and reduce friction, and it is preferable to seal the gap between the object and the lower furnace body 3 with gas.

Wherein, for the driving rotation piece, in one or more embodiments, the driving rotation piece comprises a first driving device 221 fixed on the ground or a platform and positioned at one side of the whole furnace body and a second circular ring part 224 fixed at the edge part of the upper furnace body 2, the second circular ring part 224 comprises an upper ring part and a lower ring part fixed on the upper furnace body 2, a plurality of pins 225 are fixed between the upper ring part and the lower ring part, and the pins 225 are uniformly and circumferentially arranged around the axis of the device; an output shaft of the first driving device 221 is coaxially provided with a vertical shaft 222, the vertical shaft 222 is vertically arranged, a thumb wheel 223 is coaxially connected to the vertical shaft 222, and the thumb wheel 223 is in a gear-shaped structure; the thumb wheel 223 is adapted to the pin 225, and when the thumb wheel 223 is driven by the driving device to rotate, the gear teeth of the thumb wheel 223 can sequentially push the pin 225 to move, so as to drive the upper furnace body 2 to rotate around the axis of the device under the limitation of the catch wheel 213.

The worn part can be replaced when the driving rotating part is worn by the matching mode of the pin 225 and the thumb wheel 223, and the service life of the device is prolonged.

In addition, the top end of the vertical shaft 222 is rotatably connected with the fixed support, and the shaft body of the vertical shaft 222 is positioned through the structure, so that the shaft body is prevented from being deformed under the influence of external force in the transmission process, and the matching of the thumb wheel 223 and the pin 225 is further prevented from being influenced.

In one or more embodiments, the second rotating mechanism includes a support and a base 315, the lower furnace body 3 is seated on the support, and a rotating part for driving the support and the base 315 to rotate relatively is arranged between the support and the base 315;

the rotating part comprises a second driving device 321, a middle rotating shaft 322 and a plurality of supporting wheels 323, the second driving device 321 is in transmission connection with the middle rotating shaft 322 and can drive the middle rotating shaft 322 to rotate around the axis of the device, the middle rotating shaft 322 is connected with the rotating shaft of the supporting wheels 323 through a pull rod 324, the supporting wheels 323 are circumferentially arranged on the base 315 around the axis of the device and support the edge part of the bottom of the supporting piece, when the second driving device 321 drives the middle rotating shaft 322 to rotate, the middle rotating shaft 322 drives the pull rod 324 and the rotating shafts of the supporting wheels 323 to synchronously rotate, and the supporting wheels 323 are driven by the rotating shafts to roll along the moving path around the axis of the device, so that the whole lower furnace body 3 is driven to rotate.

The axis of the middle rotating shaft 322 coincides with the axis of the device, and the two ends of the middle rotating shaft can be respectively and rotatably connected with the base 315 and the supporting piece, so that the coaxiality of the whole lower furnace body 3 is improved.

On the basis, in order to avoid the offset of the lower furnace body 3, in one or more embodiments, as shown in fig. 5, a first limiting rail 313 is arranged on one side of the supporting member facing the supporting wheel 323, a second limiting rail 314 is arranged on one side of the base 315 facing the supporting wheel 323, wheel surfaces of the supporting wheel 323 facing the supporting member and the base 315 are respectively clamped in the first limiting rail 313 and the second limiting rail 314, and the first limiting rail 313 and the second limiting rail 314 are used for enabling the supporting wheel 323 to roll only along a moving path around the axis of the device.

The first limiting rail 313 and the second limiting rail 314 are of circular ring structures, and the relative positions of the supporting wheels 323, the base 315 and the supporting pieces are limited by the arrangement of the first limiting rail 313 and the second limiting rail 314, so that the supporting pieces are prevented from deflecting or deviating in the rotating process of the lower furnace body 3, and the rotating stability of the whole lower furnace body 3 is improved. Meanwhile, the supporting wheel 323 can only move along a moving path around the axis of the device, so that pulling force required when the supporting wheel 323 is driven by the pull rod 324 to move is shared, the requirement on the strength of the pull rod 324 is reduced, and the service life of the rotating part is prolonged.

The supporting member comprises a bracket 311 and a spoke beam 312, the bracket 311 is connected with the lower furnace body 3, the spoke beam 312 is arranged on one side of the bracket 311 far away from the lower furnace body 3, and an insulating pad is arranged between the lower furnace body 3 and the bracket 311.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The two-section type rotary silicon-series ferroalloy ore thermoelectric furnace is characterized by comprising a furnace cover (1), an upper furnace body (2) and a lower furnace body (3) which are sequentially arranged along the axis of the device, wherein the upper furnace body (2) and the lower furnace body (3) are matched to form a hearth (4) for placing furnace burden, and the furnace cover (1) covers an opening of the hearth (4) for sealing the hearth (4);

the upper furnace body (2) is provided with a first rotating mechanism for driving the upper furnace body (2) to rotate around the axis of the device;

and a second rotating mechanism for driving the lower furnace body (3) to rotate around the axis of the device is arranged on the lower furnace body (3).

2. A two-stage rotary ferrosilicon ore-smelting thermoelectric furnace according to claim 1, wherein the furnace cover (1) is provided with an electrode rod (11) inserted into the hearth (4), and the end of the electrode rod (11) is close to the bottom of the hearth (4).

3. The two-stage rotary ferrosilicon ore thermoelectric furnace as claimed in claim 1, wherein a flue for discharging carbon monoxide is connected to the furnace cover (1).

4. The two-stage rotary ferrosilicon ore-thermal electric furnace according to claim 1, wherein the first rotary mechanism comprises a driving rotary member for driving the upper furnace body (2) to rotate and a driven rotary member for supporting the upper furnace body (2) and positioning a rotation path of the upper furnace body (2).

5. The two-stage rotary ferrosilicon ore-heating furnace according to claim 4, wherein the driven rotary member comprises a rotary support (211) and a first circular ring (214) fixed to the edge of the upper furnace body (2), and at least three riding wheels (212) and at least three catch wheels (213) are provided on the rotary support (211);

the riding wheel (212) is arranged at the bottom of the first circular ring part (214) in the circumferential direction of the axis of the device and supports the bottom of the first circular ring part (214); the catch wheels (213) are uniformly arranged on the outer side of the first circular part (214) around the axis of the device and extrude the outer side surface of the first circular part (214);

when the upper furnace body (2) rotates, the riding wheel (212) and the blocking wheel (213) are driven by the first circular part (214) to synchronously rotate.

6. The two-stage rotary ferrosilicon ore-smelting thermoelectric furnace according to claim 5, wherein the driving rotary member comprises a first driving device (221) and a second circular ring part (224) fixed at the edge of the upper furnace body (2), the first driving device (221) is in transmission connection with a thumb wheel (223); the outer side circumference of second ring portion (224) evenly is provided with a plurality of pins (225), thumb wheel (223) with pin (225) adaptation, when first drive arrangement (221) drive thumb wheel (223) rotate, thumb wheel (223) promote in proper order pin (225) remove and drive upper portion furnace body (2) are rotatory.

7. The two-stage rotary ferrosilicon alloy ore thermoelectric furnace according to claim 1, wherein the second rotary mechanism comprises a support and a base (315), the support is connected with the bottom of the lower furnace body (3), a rotary part for driving the support and the base (315) to rotate relatively is arranged between the support and the base (315);

the rotating part comprises a second driving device (321), a middle rotating shaft (322) and at least three supporting wheels (323), the second driving device (321) is connected with the middle rotating shaft (322) in a transmission mode and can drive the middle rotating shaft (322) to rotate around the axis of the device, the middle rotating shaft (322) is connected with the rotating shaft of the supporting wheels (323) through a pull rod (324), the supporting wheels (323) are circumferentially arranged around the axis of the device on the base (315) and are supported by the supporting pieces, and when the second driving device (321) drives the middle rotating shaft (322) to rotate, the middle rotating shaft (322) drives the supporting wheels (323) to roll along the moving path around the axis of the device.

8. The two-stage rotary ferrosilicon ore thermoelectric furnace according to claim 7, wherein a first limit rail (313) is provided on a side of the supporting member facing the supporting wheel (323), a second limit rail (314) is provided on a side of the base (315) facing the supporting wheel (323), two side surfaces of the supporting wheel (323) facing the supporting member and the base (315) are respectively clamped in the first limit rail (313) and the second limit rail (314), and the first limit rail (313) and the second limit rail (314) are used for enabling the supporting wheel (323) to roll only along a moving path around the axis of the device.

9. A two-stage rotary ferrosilicon ore-thermal electric furnace according to claim 7, wherein the support comprises a bracket (311) and a spoke (312), the bracket (311) is connected to the lower furnace body (3), the spoke (312) is disposed on the side of the bracket (311) away from the lower furnace body (3), and an insulating pad is disposed between the lower furnace body (3) and the bracket (311).

10. A two-stage rotary ferrosilicon ore thermoelectric furnace according to claim 1, wherein the upper furnace body (2) and the lower furnace body (3) are sealed by gas.