CN210004761U - Melting equipment for manufacturing vanadium sheets - Google Patents

Abstract

The utility model relates to a vanadium sheet preparation field, especially melt equipments of vanadium sheet preparation, which is characterized in that the melting equipment comprises a melting chamber, the melting chamber is of a closed structure and at least comprises a feed inlet and a discharge outlet, an electromagnetic heating device, the electromagnetic heating device is contacted with the outer wall of the melting chamber, a power supply, the power supply is electrically connected with the electromagnetic heating device through a control device, the heating of the electromagnetic heating device is controlled through the control device, an oxygen supply device comprises an oxygen supply fan, the oxygen supply fan is positioned outside the melting chamber, an oxygen supply pipe, the end of the oxygen supply pipe is connected with an air supply outlet of the oxygen supply fan, the other end of the oxygen supply pipe extends into the melting chamber, the pipe wall of the oxygen supply pipe positioned in the melting chamber is provided with the oxygen supply outlet, and melt equipments of vanadium sheet preparation with low energy consumption, high yield, short melting time and no pollution to the environment are provided.

Description

Melting equipment for manufacturing vanadium sheets

Technical Field

The utility model relates to a vanadium sheet preparation field, especially the melt equipment of kinds of vanadium sheet preparation.

Background

Vanadium is rare metals, 80% of vanadium in a metal furnace is applied to the steel industry in the form of ferrovanadium at present, tablet vanadium pentoxide occupies the main vanadium raw material in the ferrovanadium market, in nearly a century, a tablet vanadium pentoxide fuse piece device directly adopts the traditional reflection kiln production process, the energy consumption is large, the environmental pollution is serious, and the vanadium process loss is quite inappropriate to the current and future national clean production standard requirements.

In the existing melting mode, coal passes through a coal gas producer to generate coal gas, and then enters a reflecting kiln, the reflecting kiln is built into an arch by using refractory bricks, and the coal gas is combusted to heat and melt vanadium pentoxide.

The device has high original energy consumption, low recovery rate, serious environmental pollution, severe working conditions and high labor intensity, and particularly when the reverberatory furnace is pressurized and combusted by a high-power fan, dust flies, which not only wastes increasingly scarce resources, but also seriously affects the health of workers. The coal indirectly transmits heat, the heat utilization rate is low, the energy waste is serious, the time for melting materials by the equipment is relatively long, the energy consumption is large, the work conduction heat efficiency is low, the heating auxiliary time is long, and the like, the phenomena of high consumption and low yield are caused, and the smoke discharged by combustion can bring serious pollution to the surrounding environment. With the increasing demand of the steel market for vanadium, each vanadium processing enterprise urgently needs to modify the existing production equipment, reduce the production energy consumption and improve the direct pollution to the environment.

Disclosure of Invention

The utility model aims at providing kinds of low energy consumption, high productivity, short melting time and can not cause the melt equipment of the vanadium piece preparation of pollution to the environment.

The utility model solves the technical problem of adopting the technical proposal that melt equipment for manufacturing vanadium sheets is characterized by comprising:

the melting chamber is of a closed structure and at least comprises a feeding hole and a discharging hole;

the electromagnetic heating device is in contact with the outer wall of the melting chamber;

the power supply is electrically connected with the electromagnetic heating device through the control device, and the heating of the electromagnetic heating device is controlled through the control device;

an oxygen delivery device comprising:

an oxygen supply fan, the oxygen supply fan is positioned outside the melting chamber,

and the end of the oxygen supply pipe is connected with the air supply outlet of the oxygen supply fan, the other end of the oxygen supply pipe extends into the melting chamber, and the pipe wall of the oxygen supply pipe positioned in the melting chamber is provided with the oxygen supply outlet.

The oxygen supply pipe is an oxygen supply coil pipe which is spirally distributed in the melting chamber, and a plurality of oxygen supply openings are distributed on the lower surface of the spiral section at the lowest part of the oxygen supply coil pipe at intervals.

The inner bottom surface of the melting chamber is fixed with a partition piece which divides the melting chamber into a plurality of melting tanks, two adjacent melting tanks are communicated, a melting channel is formed between the first melting tank and the tail melting tank through the adjacent communicated melting tanks, the feeding port of the melting chamber is positioned above the first melting tank, and the discharging port of the melting chamber is positioned side below the tail melting tank.

The separator is a separation tube fixed at the center of the lower bottom surface in the melting chamber, a plurality of baffles are fixed on the outer wall of the separation tube, each baffle is fixed with the outer wall of the separation tube at the end, the end extends to the position close to the inner wall of the melting chamber, the lower surface of the baffle is fixed with the lower bottom surface of the melting chamber, a melting pool is enclosed by the separation tube and the inner wall of the melting chamber between two adjacent baffles, and a gap between the baffle and the inner wall of the melting chamber forms an overflowing channel communicated between two adjacent melting pools.

The flow passage is 2-5 mm.

Four baffles which are arranged oppositely in pairs are fixed on the outer wall of the isolation pipe, a -grade melting tank is formed between two adjacent baffles, two melting tanks adjacent to two sides of a -grade melting tank are second-grade melting tanks, two melting tanks adjacent to the two second-grade melting tanks are third-grade melting tanks opposite to a -grade melting tank, a -grade melting tank is a first melting tank, and a third-grade melting tank is a tail melting tank.

The baffle fixed on the outer wall of the isolation pipe is lower than the isolation pipe, the part of the oxygen supply pipe in the melting chamber at least comprises an oxygen supply coil coiled outside the isolation pipe in a spiral shape, the oxygen supply coil is positioned above the baffle, and a plurality of oxygen supply ports for supplying oxygen to each melting tank are distributed on the lower surface of the spiral section at the lowest part of the oxygen supply coil at intervals.

The part of the oxygen delivery pipe in the melting chamber comprises a straight pipe section extending from the top of the melting chamber to the upper edge of the isolation pipe and an oxygen delivery coil spirally coiled outside the isolation pipe and communicated with the straight pipe section.

The upper top of the melting chamber is respectively provided with a safety valve and an observation port.

The melting chamber is a furnace tube made of nickel-based alloy.

The invention has the beneficial effects that: oxygen is required to be continuously fed in the process of melting vanadium pentoxide, the oxygen feeding device is used for finally feeding oxygen into the melting chamber from an oxygen feeding port formed in the pipe wall of the oxygen feeding pipe through an oxygen feeding fan positioned outside the melting chamber through the oxygen feeding pipe, and the oxygen feeding pipe absorbs heat in the melting chamber and can blow high-temperature oxygen, so that the vanadium pentoxide can be melted.

Drawings

The invention is further illustrated in the following figures with reference to examples.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the structure within the melting chamber;

fig. 3 is a cross-sectional view of fig. 2.

In the figure, the device comprises a pelleter 1, a pelleter 2, a discharge port 3, an oxygen supply fan 4, a melting furnace body 5, a feed port 6, an oxygen supply pipe 7, a safety valve 8, an observation port 9, an isolation pipe 10, a melting chamber 11, a discharge pipe 12, an insulating and heat-preserving pipe 13, a hollow copper pipe 14, a heat-preserving body 15, a screw feeder 16, a circulating water tank 17, a power supply 18, a control device 19, a discharge valve 20, a storage bin 21, an -level melting tank 22, a secondary melting tank 23, a tertiary melting tank 23 and a baffle 24.

Detailed Description

For purposes of promoting a better understanding of the objects, aspects and advantages of the disclosure, reference is made to the following detailed description which forms a further detailed description of the disclosure in conjunction with the accompanying drawings wherein like reference numerals correspond to like elements.

In the present disclosure, the terms "include" and "comprise," as well as derivatives thereof, mean inclusion without limitation; the term "or" is inclusive, meaning and/or.

In this specification, the various embodiments described below which are used to describe the principles of the present disclosure are by way of illustration only and should not be construed in any way to limit the scope of the invention. The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the present disclosure as defined by the claims and their equivalents. The following description includes various specific details to aid understanding, but such details are to be regarded as illustrative only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Moreover, descriptions of well-known functions and constructions are omitted for clarity and conciseness. Moreover, throughout the drawings, the same reference numerals are used for similar functions and operations.

Example 1

As shown in fig. 1, the present embodiment provides a melting apparatus for manufacturing vanadium sheets, which includes:

the melting chamber 10 is of a closed structure and at least comprises a feeding hole 5 and a discharging hole 2, the electromagnetic heating device is in contact with the outer wall of the melting chamber 10, the power supply 17 is electrically connected with the electromagnetic heating device through a control device 18 and controls the heating of the electromagnetic heating device through the control device 18, the oxygen supply device comprises an oxygen supply fan 3, the oxygen supply fan 3 is positioned outside the melting chamber 10, an oxygen supply pipe 6 is arranged, the end of the oxygen supply pipe 6 is connected with an air supply opening of the oxygen supply fan 3, the other end of the oxygen supply pipe 6 extends into the melting chamber 10, and the pipe wall of the oxygen supply pipe 6 positioned in the melting chamber 10 is provided with the oxygen supply opening.

Oxygen is required to be continuously fed in the melting process of vanadium pentoxide, the oxygen feeding device is used for finally feeding oxygen into the melting chamber 10 from an oxygen feeding port formed in the pipe wall of the oxygen feeding pipe 6 through the oxygen feeding fan 3 positioned outside the melting chamber 10 through the oxygen feeding pipe 6, and the oxygen feeding pipe 6 absorbs heat in the melting chamber 10 and can blow high-temperature oxygen, so that the vanadium pentoxide can be melted.

The vanadium sheet melting method of the vanadium sheet melting device for manufacturing the vanadium sheet comprises the following steps:

at step , the melting chamber 10 is heated,

heating the melting chamber 10 to a temperature of 700 ℃ to 1000 ℃ by an electromagnetic heating device;

step two, blanking,

conveying powder vanadium pentoxide into a melting chamber 10;

step three, melting the mixture,

under the condition that the electromagnetic heating device maintains the melting temperature in the melting chamber 10 and the oxygen feeding device of the melting chamber 10 feeds oxygen, vanadium pentoxide is melted in the melting chamber 10,

step four, discharging the materials,

the vanadium pentoxide flows out through the discharge port 2 of the melting chamber 10 after being melted.

And the melted vanadium material flowing out of the discharge port 2 in the step four enters a sheet making machine 1 to make vanadium sheets.

Compared with the original reflection anti-melting sheet making equipment and method, the material melting equipment and method for making the vanadium sheet and the method for making the vanadium sheet have the advantages that:

1. energy-saving high-efficiency

Because the electromagnetic heating device is directly contacted with the outer wall of the melting chamber 10 and generates a high-frequency alternating magnetic field, the wall of the melting chamber 10 generates induced current with the same frequency, the melting chamber 10 generates heat, the vanadium pentoxide powder conveyed into the melting chamber 10 can be instantly melted, the original reverberatory furnace melts the vanadium pentoxide powder, coal gas generated by coal is pressurized and combusted, the heat energy utilization rate is extremely low, the consumption time is long, and the relative labor intensity is higher.

2. The product quality is stable

The vanadium sheet manufactured by the equipment and the method has the advantages that the process temperature can be between 700 ℃ and 1000 ℃, the electromagnetic heating device is controlled by the control device 18, the temperature can be automatically and manually adjusted at will, the temperature control precision is high, and the temperature range can be adjusted according to the melting quality. The use temperature of the electromagnetic melting equipment can reach 1000 ℃, the melting point of vanadium pentoxide is 680 ℃, the melting of the reverberatory furnace is gas combustion heating, so that the accurate temperature control effect cannot be achieved, and the quality of the molten vanadium is difficult to strictly ensure.

3. High environmental protection degree

According to the vanadium sheet manufactured by the equipment and the method, the heating source is electric energy, the electric energy is directly converted into required heat energy, 85% of the generated heat energy can be absorbed by materials to be melted, the heat loss is less, the temperature of the working environment of workers is low, the melting process of the materials is completely finished in a closed container, dust flying caused by leakage of vanadium pentoxide dust can not be caused, and the physical health of the workers can not be influenced by the temperature of the working environment and the pollution of the dust in the air.

The original reverberatory furnace is melted, and because the structures of equipment and facilities have inevitable technical problems, the heat utilization rate is low, the heat loss is large, the temperature of the working environment is high, the field dust pollution is large, and the discharged soot seriously pollutes the surrounding environment.

4. Low running cost

For a specific comparison, see Table 1

Melting vanadium pentoxide	Gas generator and reverberatory kiln	Melting apparatus of the invention
			Working efficiency	27-35%	90%
Quality of fusion	1 ton of	1 ton of
			Amount of coal used	1.43 ton	/
Labor cost	480 yuan	60 Yuan
			Recovery rate	98.50%	99.50%
Running cost	1572.5 yuan	739 yuan

TABLE 1

In Table 1, the average coal price is 750 Yuan/ton, the electricity price is 0.7 Yuan/degree and the labor cost is 180 Yuan/class.

The recovery rate can be improved by percentage points, and 2300 yuan can be brought per ton corresponding to the price of vanadium tablets.

Example 2

The part of the oxygen feeding pipe 6 in the melting chamber 10 is an oxygen feeding coil pipe which is distributed spirally, a plurality of oxygen feeding openings are distributed at intervals on the lower surface of the spiral section at the lowest part of the oxygen feeding coil pipe, and the oxygen feeding coil pipe which is distributed spirally can increase the stroke length of the oxygen feeding pipe 6 in the melting chamber 10 at high temperature, so that the oxygen in the oxygen feeding pipe 6 can absorb heat more fully.

Example 3

The inner bottom surface of the melting chamber 10 is fixed with a separator, the separator divides the inside of the melting chamber 10 into a plurality of melting tanks, two adjacent melting tanks are communicated, a melting channel is formed between the first melting tank and the tail melting tank through the adjacent communicated melting tanks, the feeding port 5 of the melting chamber 10 is positioned above the first melting tank, and the discharging port of the melting chamber 10 is positioned on the side below the tail melting tank.

As shown in fig. 3, the partition is an isolation tube 9 fixed at the center of the lower bottom surface in the melting chamber 10, a plurality of baffles 24 are fixed on the outer wall of the isolation tube 9, each baffle 24 is end fixed with the outer wall of the isolation tube 9, another end extends to the position close to the inner wall of the melting chamber 10, the lower surface of the baffle 24 is fixed with the lower bottom surface of the melting chamber 10, a melting pool is enclosed by the adjacent two baffles 24, the isolation tube 9 and the inner wall of the melting chamber 10, the gap between the baffle 24 and the inner wall of the melting chamber 10 forms a flow passage communicated between the adjacent two melting pools, and the flow passage is 2-5 mm.

As shown in fig. 2, four baffles 24 arranged in pairs in opposite are fixed on the outer wall of the isolation tube 9, wherein a -stage melting tank 21 is formed between two adjacent baffles 24, two melting tanks adjacent to both sides of the -stage melting tank 21 are second-stage melting tanks 22, two melting tanks adjacent to the two second-stage melting tanks 22 and opposite to the -stage melting tank 21 are third-stage melting tanks 23, the -stage melting tank 21 is a first melting tank, and the third-stage melting tank 23 is a last melting tank.

The baffle 24 that the fixed outer wall of isolation tube 9 is highly less than the height of isolation tube 9, and the part that oxygen feed pipe 6 is located melting chamber 10 is at least including being the heliciform and coiling the oxygen feed coil pipe outside isolation tube 9, and oxygen feed coil pipe is located baffle 24 top, and the lower surface interval distribution of the spiral section below the oxygen feed coil pipe is to a plurality of oxygen feeding mouths that each melting tank sent oxygen.

The part of the oxygen feeding pipe 6 in the melting chamber 10 comprises a straight pipe section extending from the top of the melting chamber 10 to the upper edge of the isolation pipe 9 and an oxygen feeding coil which is communicated with the straight pipe section and spirally coiled outside the isolation pipe 9.

In the structure of the embodiment, the electromagnetic heating device is coated outside the melting chamber 10, so the temperature of the inner wall of the melting chamber 10 is high, the middle temperature of the melting chamber 10 is degrees lower, the isolating piece adopts the isolating pipe 9 at the central position of the lower bottom surface in the melting chamber 10, the middle low-temperature zone in the melting chamber 10 can be isolated, materials do not flow through the middle low-temperature zone and are always in the high-temperature zone close to the inner wall, the heat between the isolating pipe 9 and the inner wall of the melting chamber 10 can be more concentrated, the part of the oxygen feeding pipe 6 in the melting chamber 10 is an oxygen feeding coil spirally wound outside the isolating pipe 9, so the longest stroke section of the oxygen feeding pipe 6 is concentrated in the zone with the highest temperature, the heating effect of the oxygen in the oxygen feeding pipe 6 is improved by steps, and finally high-temperature gas with the same melting temperature as the melting temperature in the melting chamber 10 is sent from the oxygen feeding port.

Example 4

The electromagnetic heating device comprises an insulating heat-preservation pipe 12, induction coils 13 and a cooling system, wherein the insulating heat-preservation pipe 12 is in contact with the outer wall of the melting chamber 10, the induction coils 13 are distributed outside the insulating heat-preservation pipe 12, the induction coils 13 are electrically connected with a power supply 17 through a control device 18, and the cooling system is arranged on the induction coils 13.

The melting chamber 10 is wrapped in the insulating heat-insulating pipe 12, the induction coil 13 is a spiral hollow copper pipe wound outside the insulating heat-insulating pipe 12, the spiral hollow copper pipe forms an electromagnetic induction coil, and the spiral hollow copper pipe is connected with a cooling system.

In this embodiment, the melting chamber 10 is a furnace tube made of nickel-based alloy. The working frequency of the induction coil 13 is 500-5000Hz, and the melting chamber 10 can be heated to the temperature of 700-1000 ℃ by the alternating magnetic field generated by the induction coil 13 of the electromagnetic heating device.

The insulating and heat-preserving pipe 12 is made of refractory mortar, and the insulating and heat-preserving pipe 12 can transfer heat generated by the induction coil 13 into the melting chamber 10.

The spiral hollow copper pipe is wrapped in the heat insulator 14, and the heat insulator 14 is made of aluminum silicate fiber cotton, so that temperature emission can be avoided to the maximum degree, and the heat efficiency is ensured.

The heat insulator 14 is fixed in the melting furnace body 4, the melting furnace body 4 is a cabinet frame structure for fixedly supporting the heat insulator 14, and the melting chamber 10 is coated in the electromagnetic heating device, and the electromagnetic heating device is coated in the heat insulator 14, so that the melting furnace body 4 can support the whole equipment by supporting the heat insulator 14.

The cooling system is a water circulation system, the water circulation system at least comprises a circulation water tank 16, a plate heat exchanger, a water pump, a water return pipe and a water inlet pipe, the induction coil 13 is a spiral hollow copper pipe, the spiral hollow copper pipe is provided with a water inlet end and a water outlet end, the water outlet of the circulation water tank 16 is connected with the water inlet of the plate heat exchanger through a pipeline, the water outlet of the plate heat exchanger is connected with the water inlet of the water pump through a pipeline, the water outlet of the water pump is connected with the water inlet end of the spiral hollow copper pipe through a water inlet pipe, the water outlet end of the spiral hollow copper pipe is connected with the water inlet of the circulation water tank 16 through the water return pipe, the circulating water of the water circulation system enters the plate heat exchanger through the water outlet through a pipeline under the action of the water pump, the circulating, the high-temperature water is returned to the circulation tank 16 to be circulated.

The upper top of the melting chamber 10 is respectively provided with a safety valve 7 and an observation port 8, the observation port 8 is used for observing the condition in the melting chamber 10, and the safety valve 7 is used for discharging the pressure in the melting chamber 10 to ensure the working safety.

Example 5

On the basis of the above embodiment, melting chamber 10 bottom has still arranged insulating layer, melting chamber 10 and the insulating layer of its bottom all wraps in insulating tube 12, induction coil 13 is the spiral hollow copper pipe of coiling outside insulating tube 12, spiral hollow copper pipe constitutes electromagnetic induction coil, spiral hollow copper pipe is connected with cooling system, the temperature of melting chamber 10 bottom can be guaranteed to the insulating layer of melting chamber 10 bottom, and induction coil 13 divide into upper and lower two sets of in this embodiment, sets of cooling system are respectively connected to every group, the life of induction coil 13 is prolonged, the material that insulating layer adopted and insulating tube 12 send, be fire-resistant daub, induction coil 13 is not limited to the upper and lower two sets of distribution form in this embodiment, specifically can be according to factors such as the size of melting chamber 10 along twine the multiunit respectively at different heights, every group connects sets of independent cooling system respectively.

Example 6

The automatic feeding device at least comprises a bin 20, a discharging valve 19, a screw feeder 15 and a discharging pipe 11, wherein the lower portion of the bin 20 is connected above the 15 end of the screw feeder 15 through the discharging valve 19, the lower portion of the other end of the screw feeder 15 is connected with the discharging pipe 11, and the discharging pipe 11 extends into the melting chamber 10 through a feeding hole 5 of the melting chamber 10.

The discharging valve 19 is a star-shaped discharging valve, a discharging control motor of the star-shaped discharging valve and a feeding driving motor of the screw feeder 15 are electrically connected with the power supply 17 through the control device 18, and the discharging valve and the screw feeder 15 are controlled through the control device 18, so that the discharging amount of the feeding device is controlled.

When the device works, vanadium pentoxide materials are placed into the stock bin 20, the control device 18 controls the star-shaped discharging valve to send the vanadium pentoxide materials in the stock bin 20 into the screw feeder 15, the control device 18 controls the screw feeder 15 to spirally convey the vanadium pentoxide materials sent from the feeding end of the screw feeder 15 to the discharging pipe 11 at the discharging end, and the vanadium pentoxide materials are sent into the melting chamber 10 through the discharging pipe 11 and the feeding hole 5 of the melting chamber 10.

The blanking valve 19 and the screw feeder 15 send the materials into the totally-enclosed melting chamber 10, the materials are automatically melted and flow into the sheet making machine 1, the feeding amount is accurately controlled, the melting speed and the production quality of the materials are effectively improved, the reflection kiln needs to be manually operated by workers to add pulverized coal into a coal furnace for combustion so as to generate heat, and then vanadium pentoxide is sent into the reflection kiln, and the procedures need to be manually operated, so that the labor intensity of the operators is high.

Claims (10)

1, kind of melt equipment of vanadium piece preparation, its characterized in that includes:

the melting chamber (10) is of a closed structure and at least comprises a feeding hole (5) and a discharging hole (2);

the electromagnetic heating device is in contact with the outer wall of the melting chamber (10);

the power supply (17), the power supply (17) is electrically connected with the electromagnetic heating device through the control device (18), and the heating of the electromagnetic heating device is controlled through the control device (18);

an oxygen delivery device comprising:

an oxygen supply fan (3), the oxygen supply fan (3) is positioned outside the melting chamber (10),

the end of the oxygen feeding pipe (6) is connected with the air supply outlet of the oxygen supply fan (3), the other end end of the oxygen feeding pipe (6) extends into the melting chamber (10), and the pipe wall of the oxygen feeding pipe (6) positioned in the melting chamber (10) is provided with the oxygen supply outlet.

2. The melting equipment for kinds of vanadium tablets according to claim 1, wherein the oxygen supply pipe (6) is an oxygen supply coil pipe spirally distributed in the melting chamber (10), and a plurality of oxygen supply ports are distributed at intervals on the lower surface of the spiral section at the lowest part of the oxygen supply coil pipe.

3. The melting equipment for kinds of vanadium tablets in accordance with claim 1, wherein a partition is fixed on the inner bottom surface of the melting chamber (10), the partition divides the inside of the melting chamber (10) into a plurality of melting tanks, two adjacent melting tanks are communicated with each other, a melting channel is formed between the head melting tank and the tail melting tank through each adjacent communicated melting tank, the feed inlet (5) of the melting chamber (10) is located above the head melting tank, and the discharge outlet of the melting chamber (10) is located side below the tail melting tank.

4. The kind of vanadium sheet melting equipment of claim 3, wherein the spacer is a spacer tube (9) fixed at the center of the lower bottom surface in the melting chamber (10), the outer wall of the spacer tube (9) is fixed with a plurality of baffle plates (24), each baffle plate (24) is fixed with the outer wall of the spacer tube (9) at the end , the other end extends to the position near the inner wall of the melting chamber (10), the lower surface of the baffle plate (24) is fixed with the lower bottom surface of the melting chamber (10), the adjacent two baffle plates (24) and the spacer tube (9) and the inner wall of the melting chamber (10) enclose a melting pool together, and the gaps at the positions of the baffle plates (24) and the inner wall of the melting chamber (10) form an overflowing channel communicated between the adjacent two melting pools.

5. The melting apparatus for kinds of vanadium flakes according to claim 4, wherein the flow channel is 2-5 mm.

6. The melting apparatus for kinds of vanadium flakes according to claim 4, wherein four baffles (24) are fixed on the outer wall of the isolation tube (9), two baffles (24) are arranged oppositely, wherein a -grade melting tank (21) is formed between two adjacent baffles (24), two melting tanks adjacent to two sides of the -grade melting tank (21) are second-grade melting tanks (22), a third-grade melting tank (23) is arranged adjacent to two second-grade melting tanks (22) and opposite to the -grade melting tank (21), the -grade melting tank (21) is a first melting tank, and the third-grade melting tank (23) is a tail melting tank.

7. The melting apparatus for kinds of vanadium flakes according to claim 4, wherein the baffle (24) fixed on the outer wall of the isolation tube (9) is lower than the isolation tube (9), the oxygen supply tube (6) in the melting chamber (10) at least comprises an oxygen supply coil spirally wound around the isolation tube (9), the oxygen supply coil is located above the baffle (24), and a plurality of oxygen supply ports for supplying oxygen to each melting tank are distributed on the lower surface of the spiral section at the lowest part of the oxygen supply coil at intervals.

8. The melting equipment for V pellets as claimed in claim 7, wherein the oxygen supply tube (6) is located inside the melting chamber (10) and includes a straight tube section extending from the top of the melting chamber (10) to the upper edge of the isolating tube (9), and an oxygen supply coil spirally wound around the isolating tube (9) and communicating with the straight tube section.

9. The melting apparatus for kinds of vanadium flakes according to claim 1, wherein the top of the melting chamber (10) is provided with a safety valve (7) and a viewing port (8).

10. The melting apparatus for kinds of vanadium flakes according to claim 1, wherein the melting chamber (10) is a furnace tube made of nickel-based alloy.

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