A furnace gas bottom blowing refining and deoxidation equipment

Abstract

The present invention provides a furnace gas bottom blowing refining and deoxidation equipment, comprising a furnace body and a mounting frame for supporting the furnace body, the furnace body having an opening at the top and a furnace cover at the top opening, an air intake structure at the bottom of the furnace body, and an exhaust structure at the top of the furnace cover, wherein the impurity removal gas enters the furnace body from the air intake structure at the bottom and is discharged from the exhaust structure at the top, the air intake structure comprises a storage chamber fixedly arranged at the bottom of the furnace body, a permeable component is arranged between the storage chamber and the bottom of the furnace body, a partition block is fixedly connected to the inner wall of the storage chamber, wherein the storage chamber and the permeable component are divided into a plurality of storage chambers by the partition block, the plurality of storage chambers are sealed with each other, and a plurality of air intake pipes are fixedly connected to the outer wall at the bottom of the storage chamber. The invention solves the problem of how to control the impurity removal gas to enter the furnace body in an orderly manner for efficient deoxidation and impurity removal.

Description

Technical Field

[0001] The invention relates to the technical field of metal smelting equipment, and in particular to a furnace gas bottom blowing refining and deoxidation equipment. Background Art

[0002] The mined copper ore raw materials need to be melted at high temperature in a smelting furnace (the temperature in the furnace is 1200-1300 degrees), and high-purity copper ingots can only be obtained after deoxidation and impurity removal. The copper liquid that has not been purified contains a large amount of impurities such as oxygen, sulfur, and phosphorus. In the copper smelting process, the existing equipment uses bottom blowing nitrogen to enter the copper liquid from the bottom of the furnace to form nitrogen bubbles. During the flow of the copper liquid, the copper liquid is fully mixed to adsorb the impurity elements in the copper liquid, and finally discharged from the top of the copper liquid.

[0003] The existing refining furnace of our company is a vertical structure. A row of air-permeable bricks for conveying nitrogen is arranged at the bottom of the furnace body. Nitrogen is finally blown into the furnace body through the air-permeable bricks through the conveying pipe. Nitrogen is continuously input from the bottom to form bubbles to absorb impurities in the copper liquid. The bubbles float up under the action of buoyancy, and absorb impurities in the copper liquid in this process. However, in order to ensure the closed structure at the bottom of the furnace body, the paving area of ​​the air-permeable bricks at the bottom of the furnace body is narrow, and the gas is continuously input. The continuously input gas continuously generates smaller bubbles at the same position in the furnace body. Multiple bubbles combine with each other and gradually become larger, and finally float out of the copper liquid quickly. However, if the bubbles are too large, a gas explosion will be formed when leaving the copper liquid, which will allow some impurity gases (such as oxygen) to enter the copper liquid, and the copper liquid cannot be effectively refined and impurity-removed. Summary of the invention

[0004] In view of the above problems, the present invention provides a furnace gas bottom blowing refining and deoxidation equipment, which solves the problem of how to control the impurity removal gas to enter the furnace body in an orderly manner for efficient deoxidation and impurity removal.

[0005] To solve the above problems, the technical solution adopted by the present invention is:

[0006] A furnace gas bottom blowing refining and deoxidation equipment, comprising a furnace body and a mounting frame for supporting the furnace body, the furnace body having an opening at the top and a furnace cover at the top opening, an air intake structure at the bottom of the furnace body, and an exhaust structure at the top of the furnace cover, wherein the impurity-removing gas enters the furnace body from the air intake structure at the bottom and is discharged from the exhaust structure at the top, the air intake structure comprises a storage chamber fixedly arranged at the bottom of the furnace body, a ventilation component is arranged between the storage chamber and the bottom of the furnace body, a partition block is fixedly connected to the inner wall of the storage chamber, wherein the storage chamber and the ventilation component are separated into A plurality of storage chambers are sealed with each other, a plurality of air inlet pipes are fixedly connected to the outer wall of the bottom end of the storage chamber, and a gas control device is arranged at the bottom end of the furnace body, wherein impurity removal gas is introduced into different storage chambers in turn through the gas control device and the air inlet pipes, wherein nitrogen enters the furnace body through the air-permeable bricks to form dense nitrogen bubbles, which can be located at the bottom of the furnace body and mixed with the copper liquid inside the furnace body to remove impurities in the copper liquid, and the furnace body can rise under the action of buoyancy, thereby finally realizing a comprehensive impurity removal process for the copper liquid in the furnace body.

[0007] Preferably, the air-permeable component is an air-permeable brick, and the air-permeable brick is divided into a plurality of mutually isolated areas.

[0008] Preferably, the gas control device includes a gas control pipeline located below the furnace body, a first end of the gas control pipeline is provided with a plurality of air holes, the end of the air inlet pipeline is connected with the air holes, a gas control component is arranged in the gas control pipeline, the top of the gas control component is sealed and rotatably connected with the first end of the gas control pipeline, the top of the gas control component is provided with air guide holes corresponding to the air holes, the inside of the gas control component is provided with an air guide channel connected with the air guide holes, the second end of the gas control pipeline is externally connected with an air inlet nozzle, wherein the gas control component is placed in different positions for ventilation with different air inlet pipelines by rotating, and by arranging the above components, nitrogen can be controlled to enter the storage chamber in sequence through different air inlet pipelines, thereby completing the orderly transportation of nitrogen and ensuring the area and efficiency of nitrogen bubble transportation.

[0009] Preferably, a positioning ring and a first control rod are provided at the second end of the gas control pipeline, the first control rod penetrates the positioning ring and the gas control pipeline and at least partially extends out, the positioning ring is rotatably connected to the inner wall of the gas control pipeline, a curved positioning groove is provided on the surface of the first control rod, a positioning protrusion is fixedly connected to the inner wall of the positioning ring, the positioning protrusion is located in the positioning groove and adapted thereto, the positioning ring is connected to the gas control component via a one-way rotating component, and by providing the above-mentioned component, the one-way rotating component can be used to drive the gas control component to rotate intermittently in one direction during the reciprocating rotation of the positioning protrusion, thereby controlling the directional rotation of the gas guide hole to different positions, thereby achieving the purpose of automatic steering.

[0010] Preferably, a gas pumping pipeline is fixedly connected to the outer wall of the second end of the gas control pipeline, and a pumping piston is sealingly and slidably connected inside the gas pumping pipeline. A second control rod is fixedly connected to the side wall of the first end of the pumping piston. The pumping piston divides the gas control pipeline into a first pumping chamber and a second pumping chamber. The first pumping chamber is connected to a first purified gas pumping interface and a second purified gas pumping interface. The second purified gas pumping interface is connected to the air inlet nozzle through a purified gas pumping pipe. The end of the first control rod is fixedly connected to the side wall of the second end of the pumping piston. A first one-way valve is provided in the first purified gas pumping interface and the second purified gas pumping interface. The above-mentioned components can act as a pump to ensure the normal delivery of nitrogen.

[0011] Preferably, the second pumping air chamber is connected to a first exhaust gas pumping interface and a second exhaust gas pumping interface. The first exhaust gas pumping interface is connected to the exhaust structure via a first exhaust gas pumping pipe, and the second exhaust gas pumping interface is externally connected to a second exhaust gas pumping pipe. A second one-way valve is provided in the first exhaust gas pumping interface and the second exhaust gas pumping interface. By arranging the above-mentioned components, they can act as a pump to ensure the normal transportation of exhaust gas.

[0012] Preferably, a serpentine heat exchange tube is wound around the outside of the gas control pipe, and the above-mentioned second exhaust gas pumping pipe is connected to one end of the serpentine heat exchange tube. By arranging the above-mentioned components, the serpentine heat exchange tube forms an insulation field around the gas control pipe, which can exchange heat with the nitrogen in the gas control pipe, thereby ensuring the temperature of the nitrogen to be input into the furnace body and reducing the temperature loss in the furnace body.

[0013] Preferably, a hydraulic telescopic rod is provided on one side of the gas pumping pipeline, and a telescopic end of the hydraulic telescopic rod is fixedly connected to the second control rod.

[0014] Preferably, the gas control pipeline and the gas pumping pipeline are connected by a sealing component, and the sealing component includes a first sealing disk and a second sealing disk. The first sealing disk is fixedly connected to the gas pumping pipeline, and the second sealing disk is fixedly connected to the gas control pipeline. The first sealing disk and the second sealing disk are fixedly connected by a connecting piece.

[0015] The beneficial effects of the present invention are:

[0016] 1. Compared with a row of air-permeable structures at the bottom of the furnace body in the prior art, a disc-shaped storage chamber is arranged at the bottom of the furnace body, and the storage chamber can extend in all directions, so as to expand the area when the gas enters the furnace body, increase the relative amount of air intake, and improve the efficiency of gas impurity removal; and the interior of the storage chamber is divided into a plurality of storage chambers, and impurity removal gas is pumped into different storage chambers in turn through a gas control device and an air intake pipe, which can realize gas pumping to different positions at the bottom of the furnace body in turn and in an orderly manner, so that the impurity removal gas can contact with the copper liquid at different positions of the furnace body, so that the two are mixed more fully, and the bubbles can expand at a predetermined designed rate in the furnace body, and finally float out of the copper liquid with a suitable size, so as to ensure that it can more effectively remove impurities in the copper liquid per unit time.

[0017] 2. By arranging components such as a gas pumping pipeline, a pumping piston, a second control rod, and a hydraulic telescopic rod, in the process of controlling the reciprocating movement of the pumping piston through the hydraulic telescopic rod and the second control rod, the first pumping chamber and the second pumping chamber can be intermittently and orderly contracted to complete the pumping of the impurity-removing gas and the synchronous discharge of the exhaust gas, thereby improving production efficiency; and the exhaust gas is discharged through the serpentine heat exchange tube wrapped around the outside of the gas control pipeline, and the exhaust gas can realize a heat exchange process with the impurity-removing gas in the gas control pipeline, and the impurity-removing gas can be heated to ensure its temperature when it subsequently enters the furnace body, thereby reducing the energy loss in the furnace body and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 A schematic diagram of the front view structure of

[0020] Figure 3 For the present invention Figure 1 A schematic diagram of a top view structure;

[0021] Figure 4 For the present invention Figure 2 AA line cross-sectional structural diagram;

[0022] Figure 5 It is a schematic diagram of the enlarged structure of point B of the present invention;

[0023] Figure 6 It is a schematic diagram of the explosion structure of the gas control pipeline and the gas pumping pipeline of the present invention;

[0024] Figure 7 For the present invention Figure 6 Schematic diagram of the side structure.

[0025] In the figure: 1, mounting frame; 2, furnace body; 201, furnace cover; 2011, exhaust structure; 202, storage room; 2021, partition block; 2022, ventilation component; 301, gas control pipeline; 3011, air inlet nozzle; 3012, air vent; 302, gas pumping pipeline; 3021, first exhaust gas pumping interface; 3022, second exhaust gas pumping interface; 3023, first purified gas pumping interface; 3024 , second purified gas pumping interface; 4, hydraulic telescopic rod; 5, pumping piston; 501, second control rod; 502, first control rod; 5021, control groove; 601, first sealing disk; 602, second sealing disk; 603, connecting piece; 7, gas control component; 701, air guide hole; 702, air guide channel; 703, one-way rotating component; 704, control ring; 7041, control protrusion; 8, serpentine heat exchange tube. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Reference Figure 1-7 A furnace gas bottom blowing refining and deoxidation equipment comprises a furnace body 2 and a mounting frame 1 for supporting the furnace body 2, the furnace body 2 is open at the top and a furnace cover 201 is arranged at the top opening, the furnace body 2 is provided with an air intake structure at the bottom, and an exhaust structure 2011 is arranged at the top of the furnace cover 201, wherein the impurity removal gas enters the furnace body 2 from the air intake structure at the bottom and is discharged from the exhaust structure 2011 at the top, wherein the impurity removal gas is selected as nitrogen, and the nitrogen enters the furnace body 2 through the air intake mechanism at the bottom of the furnace body 2 to form nitrogen bubbles, which are mixed with the copper liquid in the furnace body 2 and can absorb the impurity elements in the copper liquid, which can float out of the copper liquid along with the nitrogen bubbles, thereby finally purifying the copper liquid.

[0028] The air intake structure includes a storage chamber 202 fixedly arranged at the bottom of the furnace body 2. The storage chamber 202 is preferably circular, located in the middle of the bottom of the furnace body 2, and extends outward to occupy most of the bottom of the furnace body 2. A ventilation component 2022 is arranged between the storage chamber 202 and the bottom of the furnace body 2. A partition block 2021 is fixedly connected to the inner wall of the storage chamber 202. The storage chamber 202 and the ventilation component 2022 are divided into a plurality of storage chambers by the partition block 2021. The plurality of storage chambers are sealed to each other. The breathable component 2022 is a breathable brick, through which nitrogen can enter the interior of the furnace body 2. By setting the structure of the storage chamber 202, the breathable brick can be fixed and supported to ensure the sealing and stability of the bottom structure of the furnace body 2 to avoid accidents. After the nitrogen enters the furnace body 2 through the breathable brick, dense nitrogen bubbles are formed. The nitrogen bubbles can be located at the bottom of the furnace body 2 and mix with the copper liquid inside the furnace body 2 to remove impurities in the copper liquid. The furnace body 2 can rise under the action of buoyancy, thereby finally realizing a comprehensive impurity removal process for the copper liquid in the furnace body 2.

[0029] A plurality of air intake pipes are fixedly connected to the outer wall of the bottom end of the storage chamber 202, and a gas control device is provided at the bottom end of the furnace body 2, wherein the impurity removal gas is introduced into different storage chambers in turn through the above-mentioned gas control device and the air intake pipes, and the nitrogen is controlled to enter each storage chamber from different air intake pipes through the gas control device, so that the rate at which the nitrogen enters the storage chamber can be controlled; wherein excessive nitrogen enters the furnace body 2 synchronously, and it will cover the bottom of the furnace body 2, and the nitrogen bubbles will accelerate the mixing of dense nitrogen bubbles with the flow of the copper liquid, accelerate it to become medium-sized nitrogen bubbles, and finally become too large nitrogen bubbles at the top of the copper liquid, and cannot effectively remove impurities; on the one hand, after the nitrogen bubbles are accelerated and enlarged, their rising rate becomes larger, and their discharge rate from the furnace body 2 becomes larger, and they cannot be mixed and contacted with the copper liquid in the furnace body 2 for a longer time, and on the other hand, the nitrogen bubbles are too large when leaving the copper liquid, which will cause some impurity gases (such as oxygen) to enter the copper liquid, and cannot be effectively Impurities are removed; nitrogen is controlled to enter the furnace body 2 in different regions, so that the nitrogen can be more fully mixed with the copper liquid in the furnace body 2, and the size of the nitrogen bubbles after mixing in the furnace body 2 is controlled to achieve the best impurity removal effect; it should be noted here that when the nitrogen enters the furnace body 2 through a plurality of breathable components 2022, the pressurized nitrogen enters and drives the copper liquid in the furnace body 2 to flow in a local range after entering the furnace body 2, and the flowing copper liquid can be fully mixed with the nitrogen bubbles entering the furnace body 2, and the nitrogen bubbles flow in the furnace body 2. The path of the nitrogen bubbles is longer, the position of the change is more diverse, and the contact with the copper liquid is more sufficient, which accelerates the discharge of oxidized impurities in the copper liquid, and can shorten the time of oxygen-free copper impurity removal and improve the efficiency of oxygen-free copper impurity removal; the position of the breathable outlet in the breathable structure is dispersed, which can drive the copper liquid in the furnace body 2 to form more flow circuits in a small range, realize the stirring process of the copper liquid, and further accelerate the removal of impurities such as oxygen in the copper liquid.

[0030] Reference Figure 5 - Figure 7, wherein the gas control device comprises a gas control pipeline 301 located below the furnace body 2, a plurality of air holes 3012 are opened at the first end of the gas control pipeline 301, the end of the air inlet pipeline is in communication with the air holes 3012, a gas control component 7 is arranged in the gas control pipeline 301, the top of the gas control component 7 is sealed and rotatably connected with the first end of the gas control pipeline 301, wherein a chamber is opened at the top of the first end of the gas control pipeline 301, the top of the gas control component 7 is located in the chamber, sealed therewith, and can rotate, when the gas control component 7 rotates to a different position, the air guide hole 701 on one side thereof can be opposite to one of the air holes 3012, and the air permeable Hole 3012 is in a connected state, and is in a sealed and isolated state with other air holes 3012; an air guide hole 701 corresponding to the air hole 3012 is provided at the top of the gas control component 7, and an air guide channel 702 connected to the air guide hole 701 is provided inside the gas control component 7, and the second end of the gas control pipeline 301 is externally connected to the air inlet nozzle 3011, wherein the gas control component 7 is rotated to be in different positions and ventilated with different air inlet pipelines, wherein nitrogen is input into the gas control pipeline 301 from the air inlet nozzle 3011, and the nitrogen passes through the air guide channel 702 and the air hole 3012 in turn and finally enters the interior of the storage chamber, which can control the gas entry and finally complete the gas pumping.

[0031] The second end of the gas control pipeline 301 is provided with a control ring 704 and a first control rod 502, the first control rod 502 penetrates the control ring 704 and the gas control pipeline 301 and at least partially extends out, the control ring 704 is rotatably connected to the inner wall of the gas control pipeline 301, a curved control groove 5021 is opened on the surface of the first control rod 502, and a control protrusion 7041 is fixedly connected to the inner wall of the control ring 704, the above-mentioned control protrusion 7041 is located in the control groove 5021 and adapted thereto, wherein the first control rod 502 can pass through the control ring 704 and cooperate with it during the reciprocating movement, and the control groove 5021 on the surface of the first control rod 502 can cooperate with the control protrusion 704 on the inner wall of the control ring 704 during the process of the first control rod 502 passing through the control ring 704. 1, thereby controlling the reciprocating rotation of the positioning ring 704; the positioning ring 704 is connected to the gas control component 7 through a one-way rotating component 703, and the one-way rotating component is preferably a one-way bearing, a first side of the one-way bearing is fixedly connected to the positioning ring 704, and a second side of the one-way bearing is fixedly connected to the side wall of the gas control component 7. During the reciprocating rotation of the positioning protrusion 7041, the one-way rotating component 703 can drive the gas control component 7 to rotate intermittently in one direction, thereby controlling the directional rotation of the air guide hole 701 to different positions, thereby achieving the purpose of automatic steering; it should be noted that during the reciprocating movement of the first control rod 502, the positioning groove 5021 part is always located inside the gas control pipeline 301, thereby ensuring the sealing of the opening of the gas control pipeline 301.

[0032] The outer wall of the second end of the gas control pipeline 301 is fixedly connected to the gas pumping pipeline 302, and the inside of the gas pumping pipeline 302 is sealed and slidably connected to the pumping piston 5, and the side wall of the first end of the pumping piston 5 is fixedly connected to the second control rod 501. The pumping piston 5 divides the gas control pipeline 301 into a first pumping chamber and a second pumping chamber. The first pumping chamber is connected to the first purified gas pumping interface 3023 and the second purified gas pumping interface 3024, wherein nitrogen is transported through the first purified gas pumping interface 3023 and the second purified gas pumping interface 3024 to move in a direction and enter the gas pumping pipeline 302 to play the role of a pump; The second purified gas pumping interface 3024 is connected to the air inlet nozzle 3011 through a purified gas pumping pipe, and the end of the first control rod 502 is fixedly connected to the second end side wall of the pumping piston 5. The first purified gas pumping interface 3023 and the second purified gas pumping interface 3024 are both provided with a first one-way valve, wherein the pumping piston 5 can control the first pumping chamber to intermittently expand and shrink during the reciprocating movement. Since the first purified gas pumping interface 3023 and the second purified gas pumping interface 3024 are both provided with the first one-way valve, the first pumping chamber and the surrounding components can act as a pump to ensure the normal delivery of nitrogen.

[0033] The second pumping air chamber is connected to the first exhaust gas pumping interface 3021 and the second exhaust gas pumping interface 3022. The first exhaust gas pumping interface 3021 is connected to the exhaust structure 2011 through the first exhaust gas pumping pipe, and the second exhaust gas pumping interface 3022 is externally connected to the second exhaust gas pumping pipe. The first exhaust gas pumping interface 3021 and the second exhaust gas pumping interface 3022 are both provided with a second one-way valve. Similarly, the second pumping air chamber can also act as a pump, and the exhaust gas generated at the top of the furnace body 2 is sucked and transported therethrough, and the exhaust gas is discharged in time to ensure the normal impurity removal process of the copper liquid.

[0034] It should be noted here that the above-mentioned gas pumping pipeline 302 can be set in many ways. It can be set as two isolated pipelines, and pistons are set in the two isolated pipelines, so that the delivery of nitrogen and the delivery of exhaust gas are located in two different pipelines, ensuring the sealing effect of the two.

[0035] Reference Figure 5 A serpentine heat exchange tube 8 is wound around the outside of the gas control pipe 301, and the above-mentioned second exhaust gas pumping pipe is connected to one end of the serpentine heat exchange tube 8. The exhaust gas generated in the furnace body 2 is discharged through the second exhaust gas pumping interface 3022 and finally discharged through the serpentine heat exchange tube 8. The exhaust gas has a certain amount of heat in the initial stage of discharge. The serpentine heat exchange tube 8 forms an insulation field around the gas control pipe 301, which can exchange heat with the nitrogen in the gas control pipe 301, thereby ensuring the temperature of the nitrogen to be input into the furnace body 2 and reducing the temperature loss in the furnace body 2.

[0036] As one of the preferred methods, a hydraulic telescopic rod 4 is arranged on one side of the gas pumping pipeline 302, and the telescopic end of the hydraulic telescopic rod 4 is fixedly connected to the second control rod 501. The extension and retraction of the second control rod 501 is controlled by the hydraulic telescopic rod 4, so that the pumping process of the gas pumping piston 5 can be realized. Compared with other driving structures, the hydraulic telescopic rod 4 is stable and reliable, can adapt to the high temperature environment around the furnace body 2 and can ensure stable operation.

[0037] As one of the optional methods, the gas control pipeline 301 and the gas pumping pipeline 302 are connected by a sealing component, and the sealing component includes a first sealing disk 601 and a second sealing disk 602. The first sealing disk 601 is fixedly connected to the gas pumping pipeline 302, and the second sealing disk 602 is fixedly connected to the gas control pipeline 301. The first sealing disk 601 and the second sealing disk 602 are fixedly connected by a connecting piece 603. The first sealing disk 601 and the second sealing disk extend toward the outside, and the two can increase the connection area between the gas control pipeline 301 and the gas pumping pipeline 302, ensure the overall sealing effect, and avoid nitrogen leakage.

[0038] Finally, it should be noted that the project goal is to achieve ton-level industrial verification, which is 100% scrap electronic-grade copper, Cu+Ag content>99.95%, oxygen content in copper<0.001%, i.e. 10 ppm, and no requirement for hydrogen content; the hydrogen and oxygen content of oxygen-free copper produced in the traditional production process is an average of 2-3 ppm for hydrogen and 5-6 ppm for oxygen; the optimized solution can maintain the hydrogen content stably below 2.2 ppm and the oxygen content stably below 5.1 ppm, which can improve the quality of finished oxygen-free copper; the traditional furnace melting furnace has a designed melting rate of ≥8t / h and an actual melting rate of 6 tons / hour; it is adjusted according to the melting rate of the furnace, where the nitrogen flow rate of the furnace is greater than 45L per minute and the pressure is 3426 mbar; this solution can speed up the efficiency of nitrogen pumping and effectively shorten the time required for furnace production.

[0039] During the operation of the present invention, when it is necessary to remove impurities from gases such as nitrogen input into the furnace body 2, the hydraulic telescopic rod 4 is used to control its telescopic end and the second control rod 501 to move back and forth in an orderly manner, and the second control rod 501 is used to drive the pumping piston 5 to move up and down synchronously. During this process, the first pumping chamber and the second pumping chamber are intermittently and reciprocally enlarged and reduced. Due to the presence of the first one-way valve and the second one-way valve, nitrogen can be pumped into the gas control pipeline 301 through the first purified gas pumping interface 3023 and the second purified gas pumping interface 3024; the gas at the exhaust structure 2011 is discharged through the first exhaust gas pumping interface 3021 and the second exhaust gas pumping interface 3022, so that nitrogen delivery and exhaust gas discharge can be carried out simultaneously.

[0040] When nitrogen enters the gas control pipe 301 through the air inlet nozzle 3011, the gas pressure in the gas control pipe 301 increases, and the gas can pass through the gas guide channel 702, the gas guide hole 701, and the air vent 3012 in sequence and finally enter the storage chamber through the air inlet pipe. The nitrogen enters the storage chamber, increasing the internal pressure, and can enter the furnace body 2 from the air permeable component 2022 at the top to mix with the copper liquid and remove impurities in the copper liquid.

[0041] The pump piston 5 can control the reciprocating rotation of the control ring 704 through the first control rod 502 during the reciprocating movement. When the control ring 704 rotates in the first direction, the one-way rotating component 703 can drive the gas control component 7 to rotate synchronously, so that the air guide hole 701 at the top of the gas control component 7 corresponds to the position of different air holes 3012. Since the top of the air guide hole 701 is sealed and rotated with the corresponding position of the gas control pipeline 301, when the air guide hole 701 is relative to the position of different air holes 3012, nitrogen can be controlled to enter different storage chambers from different air inlet pipes, and then enter the furnace body 2 from different storage chambers. Different positions inside the furnace body 2; nitrogen can enter different positions in the furnace body 2 through different breathable components 2022, and it can mix with the copper liquid at various positions in the furnace body 2, and smaller nitrogen bubbles can mix with each other in the copper liquid, and eventually become medium bubbles, and finally pay the copper liquid and be discharged from the top. Through the above-mentioned setting method, the bubbles can be distributed in various positions of the furnace body 2, and the nitrogen bubbles can be mixed with different copper liquids to achieve more efficient impurity removal; the intermittent and orderly entry of nitrogen in different regions can be controlled, which can make smaller nitrogen bubbles regularly grow larger, and finally float out of the copper liquid with a suitable size, so as to avoid the bubbles from combining too much and bursting in the copper liquid, which causes the impurities to mix with the copper liquid again.

[0042] The exhaust gas discharged through the second exhaust gas pumping interface 3022 can be heat exchanged through the serpentine heat exchange tube 8. The exhaust gas in the serpentine heat exchange tube 8 can heat up the gas control pipe 301 and keep the gas control pipe 301 at a constant temperature. It can preheat the nitrogen to be input into the furnace body 2, increase its temperature and avoid energy loss.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A furnace gas bottom blowing refining and deoxidation equipment, comprising a furnace body (2) and a mounting frame (1) for supporting the furnace body (2), wherein the furnace body (2) has an opening at the top and a furnace cover (201) is arranged at the top opening, an air intake structure is arranged at the bottom of the furnace body (2), and an exhaust structure (211) is arranged at the top of the furnace cover (201), wherein impurity removal gas enters the furnace body (2) from the air intake structure at the bottom and is discharged from the exhaust structure (211) at the top, characterized in that: The air intake structure comprises a storage chamber (202) fixedly arranged at the bottom end of the furnace body (2), a ventilation component (2022) being arranged between the storage chamber (202) and the bottom end of the furnace body (2), and a partition block (2021) being fixedly connected to the inner wall of the storage chamber (202), wherein the storage chamber (202) and the ventilation component (2022) are divided into a plurality of storage chambers by the partition block (2021), and the plurality of storage chambers are sealed to each other; The outer wall at the bottom end of the storage chamber (202) is fixedly connected to a plurality of air intake pipes, and the bottom end of the furnace body (2) is provided with a gas control device, wherein the impurity-removing gas is sequentially introduced into different storage chambers through the gas control device and the air intake pipes; The permeable component (2022) is a permeable brick, and the permeable brick is divided into a plurality of mutually isolated areas; The gas control device comprises a gas control pipeline (301) located below the furnace body (2); a plurality of air holes (3012) are formed at a first end of the gas control pipeline (301); the end of the air intake pipeline is in communication with the air holes (3012); a gas control component (7) is arranged in the gas control pipeline (301); the top end of the gas control component (7) is sealingly and rotatably connected to the first end of the gas control pipeline (301); a gas guide hole (701) corresponding to the air hole (3012) is formed at the top end of the gas control component (7); a gas guide channel (702) in communication with the gas guide hole (701) is formed inside the gas control component (7); and a second end of the gas control pipeline (301) is externally connected to an air intake nozzle (3011); the gas control component (7) is placed at different positions to ventilate different air intake pipelines by rotating; A positioning ring (704) and a first control rod (502) are provided at the second end of the gas control pipeline (301); the first control rod (502) penetrates the positioning ring (704) and the gas control pipeline (301) and at least partially extends out; the positioning ring (704) is rotatably connected to the inner wall of the gas control pipeline (301); a curved positioning groove (5021) is provided on the surface of the first control rod (502); a positioning protrusion (7041) is fixedly connected to the inner wall of the positioning ring (704); the positioning protrusion (7041) is located in the positioning groove (5021) and is adapted thereto; the positioning ring (704) is connected to the gas control component (7) via a one-way rotating component (703).

2. The furnace gas bottom blowing refining and deoxidation equipment according to claim 1, characterized in that: The outer wall of the second end of the gas control pipeline (301) is fixedly connected to a gas pumping pipeline (302), and the gas pumping pipeline (302) is sealed and slidably connected to a pumping piston (5) inside. The side wall of the first end of the pumping piston (5) is fixedly connected to a second control rod (501). The pumping piston (5) divides the gas control pipeline (301) into a first pumping chamber and a second pumping chamber. The first pumping chamber is connected to a first purified gas pumping interface (3023) and a second purified gas pumping interface (3024). The second purified gas pumping interface (3024) is connected to the air inlet nozzle (3011) through a purified gas pumping pipe. The end of the first control rod (502) is fixedly connected to the side wall of the second end of the pumping piston (5). The first purified gas pumping interface (3023) and the second purified gas pumping interface (3024) are both provided with a first one-way valve.

3. The furnace gas bottom blowing refining and deoxidation equipment according to claim 2, characterized in that: The second pumping chamber is connected to a first exhaust gas pumping interface (3021) and a second exhaust gas pumping interface (3022); the first exhaust gas pumping interface (3021) is connected to the exhaust structure (2011) via a first exhaust gas pumping pipe; the second exhaust gas pumping interface (3022) is externally connected to a second exhaust gas pumping pipe; and a second one-way valve is provided in the first exhaust gas pumping interface (3021) and the second exhaust gas pumping interface (3022).

4. The furnace gas bottom blowing refining and deoxidation equipment according to claim 3, characterized in that: A serpentine heat exchange tube (8) is wound around the outside of the gas control pipeline (301), and the second exhaust gas pumping pipeline is connected to one end of the serpentine heat exchange tube (8).

5. A furnace gas bottom blowing refining and deoxidation equipment according to any one of claims 2 to 4, characterized in that: A hydraulic telescopic rod (4) is provided on one side of the gas pumping pipeline (302), and the telescopic end of the hydraulic telescopic rod (4) is fixedly connected to the second control rod (501).

6. A furnace gas bottom blowing refining and deoxidation equipment according to any one of claims 2 to 4, characterized in that: The gas control pipeline (301) and the gas pumping pipeline (302) are connected via a sealing component, wherein the sealing component comprises a first sealing disk (601) and a second sealing disk (602), wherein the first sealing disk (601) is fixedly connected to the gas pumping pipeline (302), and the second sealing disk (602) is fixedly connected to the gas control pipeline (301), and the first sealing disk (601) and the second sealing disk (602) are fixedly connected via a connector (603).

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