Fire refining furnace for copper crude smelting

Abstract

The invention discloses a crude copper smelting fire refining furnace which comprises a furnace door, a furnace body and a flue, the furnace door is installed on the front face of the furnace body, the flue is installed on the side face of the furnace body, a maintenance assembly is arranged on the surface of the furnace body and comprises a flame partition plate and a plurality of partition plates, and a sealing fire partition frame is arranged at the top of the furnace body. The flame isolation plate is arranged in a sealed fire isolation frame at the upper end of the furnace body, the partition plates and the surface of the flame isolation plate are evenly installed, the furnace top is arranged in the flame isolation plate, the periphery of the lower end of the furnace body communicates with a plurality of discharge pipes, fire-resistant plugs are arranged in the discharge pipes, and a plurality of temperature monitors are evenly installed on the periphery of the lower end of the furnace body. According to the fire refining furnace for the crude smelting copper, the bursting refractory bricks are separated from the interior of the furnace body, so that workers can maintain the bursting refractory bricks under the condition that molten copper does not need to be discharged and cooled.

Description

Technical Field

[0001] The invention relates to the technical field of refining furnaces, in particular to a pyrometallurgical refining furnace for crude copper. Background Art

[0002] When smelting copper, the ore needs to be crushed, floated and roasted to make it into concentrated copper ore with a copper content of 25%-30%. Then silica sand is added to form matte with a copper content of 60%. Further blowing can form crude copper. Therefore, the crude copper pyrometallurgical refining furnace is a metal smelting equipment that can remove impurities from crude copper.

[0003] Since copper smelting requires high temperatures, the refining furnace needs to withstand high temperatures. Therefore, refractory bricks are usually installed inside the refining furnace. Since refractory bricks have low thermal conductivity, they can insulate temperature and reduce heat loss. However, the temperature gradient inside the refractory bricks is large, and because their strength is relatively low, thermal cracking is prone to occur during the smelting of copper ore, causing heat to be lost to the external environment. As the smelting environment temperature increases, heat is also wasted. During the smelting process, the temperature is high and the copper is in liquid form, making it difficult to repair damaged refractory bricks in a timely manner. Summary of the invention

[0004] The object of the present invention is to provide a crude copper pyrometallurgical refining furnace to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a crude copper pyrometallurgical refining furnace, comprising a furnace door, a furnace body and a flue, wherein the furnace door is installed on the front side of the furnace body, the flue is installed on the side of the furnace body, a maintenance component is arranged on the surface of the furnace body, the maintenance component comprises a flame muffle plate and a plurality of partition plates, a sealed fire isolation frame is arranged on the top of the furnace body, the flame muffle plate is arranged in the sealed fire isolation frame at the upper end of the furnace body, a plurality of partition plates are evenly installed on the surface of the flame muffle plate, a furnace top is arranged inside the flame muffle plate, a plurality of exhaust pipes are connected to the lower end of the furnace body, a plurality of exhaust pipes are arranged inside the plurality of exhaust pipes, a plurality of temperature monitors are evenly installed around the lower end of the furnace body.

[0006] As a preferred technical solution of the present invention, a lifting assembly is provided at the upper end of the furnace body, and the lifting assembly includes a first motor, a wire rope and a reel. The first motor is fixedly installed on the back of the furnace body, the reel is fixedly connected to the output end of the first motor, and one end of the wire rope is fixedly connected to the surface of the reel.

[0007] As a preferred technical solution of the present invention, two support frames are fixedly installed on the upper end of the furnace body, the transverse arm ends of the two support frames are fixedly connected with suspension rods, and the furnace top is fixedly connected to the lower ends of the two suspension rods.

[0008] As a preferred technical solution of the present invention, a support shaft is rotatably connected between the two support frames, guide cylinders are fixedly connected to the four corners of the furnace body, a guide frame is slidably inserted inside the guide cylinder, the other end of the steel wire rope is fixedly connected to the surface of the guide frame, and a cantilever frame is fixedly connected to the surface of the furnace body.

[0009] As a preferred technical solution of the present invention, a cooling component is arranged inside the flame baffle, and the cooling component includes a water inlet pipe and a floating frame. The flame baffle and the partition plate are both hollow structures, and multiple partition plates are connected to the flame baffle. The lower end of the partition plate of the flame baffle is fixedly connected to a refractory plate.

[0010] As a preferred technical solution of the present invention, the floating frame is arranged inside the flame baffle plate, the water inlet pipe is fixedly inserted inside the top of the flame baffle plate, two pull rods are fixedly connected to the upper surface of the floating frame, and the upper ends of the pull rods are fixedly connected to water plugs, and the two water plugs are respectively arranged inside the two short arm ends of the water inlet pipe, the water plugs and the water inlet pipe form a piston mechanism, and the two short arm ends of the water inlet pipe are provided with multiple water outlet holes.

[0011] As a preferred technical solution of the present invention, a heating component is provided on the side of the furnace body away from the flue, and the heating component includes an air pipe, a heat transfer pipe and a fan blade. The air pipe is connected to the side of the furnace body away from the flue, and the end of the air pipe away from the furnace body is connected to the air inlet pipe, the heat transfer pipe is connected to the surface of the air inlet pipe, and the long arm end of the heat transfer pipe is connected to the surface of the furnace body.

[0012] As a preferred technical solution of the present invention, a support plate is fixedly connected inside the heat transfer tube, a rotating shaft is rotatably connected to the middle of the support plate, and the fan blade is fixedly connected to one end of the rotating shaft.

[0013] As a preferred technical solution of the present invention, the other end of the rotating shaft is fixedly connected to a second sprocket, a second motor is fixedly installed on the side of the furnace body, the output end of the second motor is fixedly connected to the first sprocket, and chains are arranged on the surfaces of the first sprocket and the second sprocket.

[0014] As a preferred technical solution of the present invention, a plurality of baffles are fixedly connected to both the upper and lower surfaces inside the gas transmission pipe, and the two groups of the plurality of baffles are arranged in a staggered manner.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention sets a maintenance component. Since the heat in the furnace body will be lost from the burst refractory bricks, it will be monitored by the temperature monitor to determine the position. Then, the partition plate is moved to the bottom of the furnace body, and the refractory bricks can be separated by the flame muffle plate and the partition plate. Then, the molten copper at the corresponding position is discharged, and the burst refractory bricks can be repaired without discharging the molten copper and cooling the molten copper.

[0017] 2. The present invention provides a cooling component to discharge water into the partition plate and the flame baffle plate, thereby reducing the temperature of the partition plate and the flame baffle plate and improving the safety of the staff during the maintenance process. In addition, because the floating frame can rise and fall with the water level, water can flow out of the water outlet when the water level is too low, thereby achieving the purpose of automatically replenishing water.

[0018] 3. The present invention provides a heating component, which can transport the hot air inside the furnace body to the air inlet pipe through rotating fan blades. In this way, when the inert gas flows through the air inlet pipe and the air delivery pipe, the hot air and the inert gas can be mixed to increase the temperature of the inert gas, thereby preventing the refractory bricks from bursting due to excessive temperature difference when the inert gas temperature is too low and contacts with the refractory bricks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure inside the furnace body of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the flame baffle and the partition plate of the present invention;

[0022] Figure 4 For the present invention Figure 2 Enlarged view of point A in the middle;

[0023] Figure 5 It is a structural schematic diagram of the floating board part of the present invention;

[0024] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle;

[0025] Figure 7 It is a structural schematic diagram of the back side of the furnace body of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the lifting component part of the present invention;

[0027] Fig. 9 It is a structural schematic diagram of the heating component part of the present invention;

[0028] Fig.10 For the present invention Fig. 9 Enlarged view of center C.

[0029] In the figure: 1, furnace body; 2, furnace door; 3, flue; 401, partition plate; 402, flame baffle; 403, fireproof board; 404, furnace top; 405, floating frame; 406, water inlet pipe; 407, discharge pipe; 408, temperature monitor; 409, fireproof plug; 410, water plug; 411, pull rod; 412, water outlet; 502, suspension rod; 503, support frame; 504, support shaft ; 505, overhead frame; 506, guide frame; 507, guide cylinder; 508, wire rope; 509, reel; 510, first motor; 601, air inlet pipe; 602, air delivery pipe; 603, baffle; 604, heat transfer pipe; 605, chain; 606, first sprocket; 607, second motor; 608, second sprocket; 609, fan blades; 610, support plate; 611, rotating shaft. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] See also Figure 1-10 The present invention provides a technical solution for a crude copper pyrometallurgical refining furnace:

[0034] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, a crude copper pyrometallurgical refining furnace comprises a furnace door 2, a furnace body 1 and a flue 3, wherein the furnace door 2 is installed on the front of the furnace body 1, and the flue 3 is installed on the side of the furnace body 1. A maintenance component is arranged on the surface of the furnace body 1, and the maintenance component comprises a flame muffle plate 402 and a plurality of partition plates 401. A sealed fireproof frame is arranged on the top of the furnace body 1, and the flame muffle plate 402 is arranged in the sealed fireproof frame at the upper end of the furnace body 1. A plurality of partition plates 401 are evenly installed on the surface of the flame muffle plate 402, and the burst refractory bricks can be separated by the flame muffle plate 402 and the partition plates 401;

[0035] Among them, a furnace top 404 is arranged inside the flame baffle 402, and multiple exhaust pipes 407 are connected around the lower end of the furnace body 1. Refractory plugs 409 are arranged inside the multiple exhaust pipes 407. The refractory plugs 409 at the corresponding positions are taken out from the exhaust pipes 407 to facilitate the staff to repair the burst refractory bricks. Multiple temperature monitors 408 are evenly installed around the lower end of the furnace body 1. The position of the burst refractory bricks can be determined by the temperature monitors 408;

[0036] Among them, a lifting assembly is arranged at the upper end of the furnace body 1, and the lifting assembly includes a first motor 510, a steel wire rope 508 and a reel 509. The first motor 510 is fixedly installed on the back of the furnace body 1, and the reel 509 is fixedly connected to the output end of the first motor 510. One end of the steel wire rope 508 is fixedly connected to the surface of the reel 509. The reel 509 is driven to rotate by the first motor 510, and the steel wire rope 508 is wound or unwound by the reel 509, so as to achieve the purpose of controlling the lifting and lowering of the partition plate 401 and the flame baffle plate 402.

[0037] Among them, two support frames 503 are fixedly installed on the upper end of the furnace body 1, and the horizontal arm ends of the two support frames 503 are fixedly connected with the suspension rods 502, the furnace top 404 is fixedly connected to the lower ends of the two suspension rods 502, and a support shaft 504 is rotatably connected between the two support frames 503, and the four corners of the furnace body 1 are fixedly connected with guide cylinders 507, and the guide frame 506 is slidably inserted inside the guide cylinder 507, the other end of the wire rope 508 is fixedly connected to the surface of the guide frame 506, and the surface of the furnace body 1 is fixedly connected with a cantilever frame 505.

[0038] During specific use, when the refractory bricks inside the furnace body 1 burst, the heat in the furnace body 1 will be lost from the burst refractory bricks, causing the temperature of the burst part to rise rapidly and significantly, which will be monitored by the temperature monitor 408. The position of the burst refractory bricks can be determined by the temperature monitor 408 at the corresponding position, and then the reel 509 is driven to rotate by the first motor 510 to spread the steel wire rope 508 wound on the reel 509, so that the partition plate 401 can be moved downward to the bottom of the furnace body 1, and the burst refractory bricks can be separated by the flame isolation plate 402 and the partition plate 401, and then the refractory plug 409 at the corresponding position is taken out from the discharge pipe 407 to discharge the copper water in the isolated part, and then the sealed fire isolation frame on the top of the furnace body 1 is removed, and the staff can use repair tools and equipment to repair the burst refractory bricks after wearing protective equipment.

[0039] according to Figure 5 and Figure 6 As shown, a cooling component is arranged inside the flame muffle plate 402, and the cooling component includes a water inlet pipe 406 and a floating frame 405. The flame muffle plate 402 and the partition plate 401 are both hollow structures, and a plurality of partition plates 401 are connected to the flame muffle plate 402. The lower end of the partition plate 401 of the flame muffle plate 402 is fixedly connected with a refractory plate 403. The material of the refractory plate 403 is the same as that of the refractory brick, and the refractory plate 403 can reduce the loss of heat;

[0040] Among them, the floating frame 405 is arranged inside the flame baffle plate 402, and the water plug 410 can be driven to move by the floating frame 405. The water inlet pipe 406 is fixedly inserted into the top of the flame baffle plate 402. Two pull rods 411 are fixedly connected to the upper surface of the floating frame 405. The upper end of the pull rod 411 is fixedly connected to the water plug 410. The flow of water can be controlled by the position of the water plug 410. The two water plugs 410 are respectively arranged inside the two short arm ends of the water inlet pipe 406. The water plug 410 and the water inlet pipe 406 form a piston mechanism. The two short arm ends of the water inlet pipe 406 are provided with multiple water outlet holes 412.

[0041] During specific use, when the partition plate 401 and the flame baffle plate 402 are in use, water can be discharged into the partition plate 401 and the flame baffle plate 402 through the water inlet pipe 406 connected to the external water source, that is, the temperature of the partition plate 401 and the flame baffle plate 402 can be lowered by water, thereby improving the safety of the staff during the maintenance process. When the water in the partition plate 401 and the flame baffle plate 402 evaporates and causes the water level to drop, since the floating frame 405 floats on the water surface, it can rise and fall with the water level. In this way, when the water level is too low, the floating frame 405 drives the water plug 410 to move downward until the water outlet 412 is no longer blocked, so that water can flow out of the water outlet 412, thereby achieving the purpose of automatically replenishing water.

[0042] according to Fig. 9 and Fig.10 As shown, a heating component is provided on the side of the furnace body 1 away from the flue 3, and the heating component includes an air delivery pipe 602, a heat transfer pipe 604 and a fan blade 609. The air delivery pipe 602 is connected to the side of the furnace body 1 away from the flue 3, and one end of the air delivery pipe 602 away from the furnace body 1 is connected to the air inlet pipe 601, and the heat transfer pipe 604 is connected to the surface of the air inlet pipe 601. The long arm end of the heat transfer pipe 604 is connected to the surface of the furnace body 1, and the interior of the heat transfer pipe 604 is fixedly connected to a support plate 610, and the middle part of the support plate 610 is rotatably connected to a rotating shaft 611. The fan blade 609 is fixedly connected to one end of the rotating shaft 611, and the inert gas and the hot air can be mixed by the rotating fan blade 609;

[0043] Among them, the other end of the rotating shaft 611 is fixedly connected to the second sprocket 608, and the side of the furnace body 1 is fixedly installed with a second motor 607. The output end of the second motor 607 is fixedly connected to the first sprocket 606. The surfaces of the first sprocket 606 and the second sprocket 608 are provided with a chain 605. The cooperation between the first sprocket 606, the second sprocket 608 and the chain 605 can drive the fan blade 609 to rotate. The upper and lower surfaces inside the gas pipe 602 are fixedly connected with a plurality of baffles 603. The two groups of multiple baffles 603 are staggered. The staggered baffles 603 can increase the gas flow distance and make the hot air and inert gas mixed more evenly.

[0044] During specific use, in order to reduce the amount of oxygen entering the refining furnace and causing oxidation of oxygen and copper, an inert gas is sometimes injected into the furnace body 1 during the smelting process to reduce the amount of oxygen retained in the furnace body 1. In the process of injecting the inert gas into the furnace body 1 through the air inlet pipe 601, the first sprocket 606 can be driven to rotate by the second motor 607. Since the transmission between the first sprocket 606, the second sprocket 608 and the chain 605 is an existing commonly used structure, the rotating shaft 611 and the fan blades 609 can be driven to rotate to transport the hot air inside the furnace body 1 to the air inlet pipe 601. In this way, when the inert gas flows through the air inlet pipe 601 and the air delivery pipe 602, the hot air and the inert gas can be mixed to increase the temperature of the inert gas, thereby preventing the refractory bricks from bursting due to excessive temperature difference when the inert gas temperature is too low and contacts with the refractory bricks.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A crude copper pyrometallurgical refining furnace, comprising a furnace door (2), a furnace body (1) and a flue (3), characterized in that: The furnace door (2) is installed on the front side of the furnace body (1), the flue (3) is installed on the side of the furnace body (1), a maintenance component is arranged on the surface of the furnace body (1), the maintenance component comprises a flame muffle plate (402) and a plurality of partition plates (401), a sealed fire isolation frame is arranged on the top of the furnace body (1), the flame muffle plate (402) is arranged in the sealed fire isolation frame at the upper end of the furnace body (1), a plurality of partition plates (401) are evenly installed on the surface of the flame muffle plate (402), a furnace top (404) is arranged inside the flame muffle plate (402), a plurality of exhaust pipes (407) are connected to the lower end of the furnace body (1), a plurality of exhaust pipes (407) are arranged inside the plurality of exhaust pipes (407), and a plurality of temperature monitors (408) are evenly installed around the lower end of the furnace body (1).

2. The crude copper pyrometallurgical refining furnace according to claim 1, characterized in that: A lifting assembly is provided at the upper end of the furnace body (1), the lifting assembly comprising a first motor (510), a steel wire rope (508) and a reel (509), the first motor (510) being fixedly mounted on the back of the furnace body (1), the reel (509) being fixedly connected to the output end of the first motor (510), and one end of the steel wire rope (508) being fixedly connected to the surface of the reel (509).

3. The crude copper pyrometallurgical refining furnace according to claim 1, characterized in that: Two support frames (503) are fixedly mounted on the upper end of the furnace body (1), the transverse arm ends of the two support frames (503) are fixedly connected to suspension rods (502), and the furnace top (404) is fixedly connected to the lower ends of the two suspension rods (502).

4. The crude copper pyrometallurgical refining furnace according to claim 3, characterized in that: A support shaft (504) is rotatably connected between the two support frames (503), and guide cylinders (507) are fixedly connected to the four corners of the furnace body (1). A guide frame (506) is slidably inserted inside the guide cylinder (507), and the other end of the steel wire rope (508) is fixedly connected to the surface of the guide frame (506), and a cantilever frame (505) is fixedly connected to the surface of the furnace body (1).

5. The crude copper pyrometallurgical refining furnace according to claim 1, characterized in that: A cooling component is arranged inside the flame baffle plate (402), and the cooling component comprises a water inlet pipe (406) and a floating frame (405). The flame baffle plate (402) and the partition plate (401) are both hollow structures, and a plurality of partition plates (401) are connected to the flame baffle plate (402). The lower end of the partition plate (401) of the flame baffle plate (402) is fixedly connected to a fireproof plate (403).

6. A crude copper pyrometallurgical refining furnace according to claim 5, characterized in that: The floating frame (405) is arranged inside the flame baffle (402), and the water inlet pipe (406) is fixedly inserted inside the top of the flame baffle (402). Two pull rods (411) are fixedly connected to the upper surface of the floating frame (405), and the upper ends of the pull rods (411) are fixedly connected to water plugs (410). The two water plugs (410) are respectively arranged inside the two short arm ends of the water inlet pipe (406). The water plugs (410) and the water inlet pipe (406) form a piston mechanism, and the two short arm ends of the water inlet pipe (406) are both provided with a plurality of water outlet holes (412).

7. The crude copper pyrometallurgical refining furnace according to claim 1, characterized in that: A heating component is provided on the side of the furnace body (1) away from the flue (3), and the heating component comprises an air supply pipe (602), a heat transfer pipe (604) and a fan blade (609); the air supply pipe (602) is connected to the side of the furnace body (1) away from the flue (3); one end of the air supply pipe (602) away from the furnace body (1) is connected to an air inlet pipe (601); the heat transfer pipe (604) is connected to the surface of the air inlet pipe (601); and the long arm end of the heat transfer pipe (604) is connected to the surface of the furnace body (1).

8. The crude copper pyrometallurgical refining furnace according to claim 7, characterized in that: A support plate (610) is fixedly connected inside the heat transfer tube (604), a rotating shaft (611) is rotatably connected to the middle of the support plate (610), and the fan blade (609) is fixedly connected to one end of the rotating shaft (611).

9. A crude copper pyro-refining furnace according to claim 8, characterized in that: The other end of the rotating shaft (611) is fixedly connected to a second sprocket (608), a second motor (607) is fixedly installed on the side of the furnace body (1), an output end of the second motor (607) is fixedly connected to a first sprocket (606), and chains (605) are arranged on the surfaces of the first sprocket (606) and the second sprocket (608).

10. The crude copper pyrometallurgical refining furnace according to claim 7, characterized in that: A plurality of baffles (603) are fixedly connected to both the upper and lower surfaces inside the gas delivery pipe (602), and two groups of the plurality of baffles (603) are arranged in a staggered manner.

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