A copper smelting waste heat recovery device and method

Abstract

The present invention belongs to the technical field of copper smelting, and discloses a copper smelting waste heat recovery and utilization device and method, including a support frame, and also including: a discharge assembly, the discharge assembly is installed on the support frame; a storage assembly, the storage assembly is arranged on the discharge assembly; a connecting assembly, the connecting assembly is sleeved on the discharge assembly. The present invention injects the flue gas generated during the smelting process of copper concentrate into the discharge assembly and moves up along the channel between the protective cover and the heat insulation cover. The heat carried by the flue gas in the process of moving up in the channel is conducted to the storage tube through the protective cover, so that the temperature of the storage tube gradually increases, and the copper concentrate in the storage tube is preheated. Since the protective cover and the heat insulation cover are corrugated, the channel formed is corrugated, which can effectively increase the residence time of the flue gas in the channel, maximize the utilization of the heat carried by the flue gas, and ensure the effect of preheating the copper concentrate through the continuous generation of flue gas.

Description

Technical Field

[0001] The present invention belongs to the technical field of copper smelting, and in particular relates to a device and method for recovering waste heat from copper smelting. Background Art

[0002] Copper smelting technology is mainly divided into two categories: pyrometallurgy and hydrometallurgy. Pyrometallurgy is the main method of copper production today, accounting for 80%-90% of copper production. It mainly processes sulfide ores. The advantages of pyrometallurgy are strong adaptability of raw materials, low energy consumption, high efficiency and high metal recovery rate. The pyrometallurgy process mainly includes the following four main steps: matte smelting, copper matte (matte) blowing, blister copper pyrometallurgy and anode copper electrolytic refining; copper concentrate is the main raw material of the smelting furnace. It contains high-grade copper elements, as well as other metal elements (such as iron, sulfur, etc.) and non-metal elements (such as silicon, oxygen, calcium). etc.), copper concentrate usually exists in the form of block or powder, and needs to undergo pretreatment steps such as crushing and screening to meet the charging requirements of the smelting furnace; currently, copper smelting is carried out by preheating and smelting copper concentrate, and the smelting furnace fuels include coke, coal, heavy oil, natural gas, etc., and the fuel will produce flue gas during the combustion process. The existing flue gas is directly discharged after being treated to meet the standards, and the heat in the flue gas is difficult to be effectively utilized, resulting in a waste of resources, which reduces the utilization rate of fuel. At the same time, the preheating of copper concentrate will increase energy loss. Therefore, a copper smelting waste heat recovery and utilization device and method are proposed. Summary of the invention

[0003] In order to solve the problems raised in the above background technology, the present invention provides a copper smelting waste heat recovery and utilization device and method, which solves the problem that the heat existing in the existing flue gas is difficult to effectively utilize, resulting in a waste of resources and reducing the utilization rate of fuel.

[0004] To achieve the above object, the present invention provides the following technical solution: a copper smelting waste heat recovery and utilization device, comprising a support frame, and also comprising:

[0005] A discharge assembly, the discharge assembly being mounted on the support frame;

[0006] A storage component, wherein the storage component is arranged on the discharge component;

[0007] A connecting component, wherein the connecting component is sleeved on the discharge component;

[0008] A guide assembly, the guide assembly being arranged between the discharge assembly and the storage assembly;

[0009] Wherein, the connection assembly comprises a docking frame movably sleeved on the discharge assembly, and a through hole is opened at the bottom of the docking frame;

[0010] The guide assembly includes a storage tube sleeved inside the storage assembly, a connecting frame is fixedly installed in the through hole, a through groove is opened on the surface of the connecting frame, a heat insulation cover is fixedly installed at the bottom of the connecting frame, and a protective cover is movably sleeved on the bottom of the connecting frame;

[0011] The inner wall of the protective cover is in contact with the outside of the storage tube, the bottom of the protective cover is fixedly connected to the outside of the storage tube, and the connecting frame is movably sleeved on the outside of the storage tube;

[0012] A channel is formed between the protective cover and the heat insulation cover, and the bottom of the channel is connected to the discharge assembly, and the top of the channel is connected to the docking frame;

[0013] The storage tube is made of copper and is used to store copper concentrate. The protective cover and the heat insulation cover are in the shape of a corrugated cylinder.

[0014] The flue gas moves upward along the channel between the protective cover and the heat insulation cover through the discharge assembly, and the heat is conducted to the storage tube to preheat the copper concentrate.

[0015] Preferably, the discharge assembly comprises a dispersion box mounted on the support frame, a baffle is connected to the bottom of the dispersion box by bolts so that the dispersion box is in a sealed cavity, and a smoke inlet pipe is installed outside the dispersion box;

[0016] A guide rod is fixedly mounted on the top of the dispersion box.

[0017] Preferably, the lower end of the storage tube passes through the dispersion box and the inside of the baffle, a threaded rod is installed at the bottom of the baffle, and a blocking plate for blocking the bottom of the storage tube is installed on the outside of the threaded rod through a nut;

[0018] A stabilizing frame is fixedly mounted on the top of the dispersion box, and the stabilizing frame is movably sleeved on the outside of the storage tube.

[0019] Preferably, the storage assembly includes a storage box installed on the upper end of the guide rod, a protective plate is installed in the middle of the storage box, a top cover is provided on the upper movable sleeve of the storage box, and a filling pipe connected to the interior of the storage box is provided in the middle of the top cover.

[0020] Preferably, a protrusion is fixedly mounted on the bottom of the storage box, the protrusion is kept coaxial and vertical with the injection tube, and the inner diameter of the storage box gradually increases from the upper and lower ends to the middle.

[0021] Preferably, a support rod is installed on the top of the storage tube, and a auger is fixedly installed on the inner wall of the storage tube, and the top of the auger is connected to the top of the support rod;

[0022] The top end of the storage tube is sleeved inside the storage box.

[0023] Preferably, a second transmission gear is fixedly mounted on the top of the support rod, and a first transmission gear meshing with the second transmission gear is fixedly mounted on the inner wall of the top cover.

[0024] Preferably, the connection assembly further comprises a docking nut movably arranged outside the docking frame;

[0025] The docking frame is sleeved on the outside of the guide rod, and a thread groove is opened on the upper end of the guide rod. The docking nut cooperates with the thread groove outside the guide rod so that the top of the docking frame fits with the bottom of the storage box.

[0026] Preferably, the guide assembly further comprises a sliding block fixedly mounted on the inner wall of the protective cover, and a vertical groove for vertical sliding of the sliding block is formed on the outside of the storage tube.

[0027] The present invention also provides a method for recovering waste heat from copper smelting, comprising the following steps:

[0028] S1. The bottom end of the storage tube is sealed by installing a sealing plate on the outside of the threaded rod, and the copper concentrate is injected into the storage box through the injection pipe. The auger is rotated to facilitate the copper concentrate to enter the storage tube;

[0029] S2. The flue gas generated during the copper concentrate smelting process is injected into the discharge assembly and moves upward along the channel between the protective cover and the heat insulation cover. The heat carried by the flue gas during the upward movement in the channel is conducted through the protective cover to the cavity between the protective cover and the storage tube, so that the temperature of the storage tube gradually increases, and the copper concentrate in the storage tube is preheated. After the copper concentrate is preheated, the sealing plate can be removed to discharge it;

[0030] S3. When the flue gas moves in the channel between the protective cover and the heat insulation cover, the particulate impurities carried in the flue gas adhere to the protective cover and the heat insulation cover. The docking frame is moved down along the guide rod by rotating the docking nut regularly, thereby driving the connecting frame, the heat insulation cover and the protective cover to move down, and the slider moves down along the slider opened on the surface of the storage tube;

[0031] S4. Since the protective cover and the heat insulation cover are in the shape of a corrugated cylinder, the protective cover and the heat insulation cover are compressed and contacted with each other. By rotating the top cover and the first transmission gear, the first transmission gear cooperates with the second transmission gear to drive the second transmission gear and the storage tube to rotate, and at the same time drive the protective cover to rotate, so that friction is formed between the protective cover and the heat insulation cover, and the smoke and dust attached to the protective cover and the heat insulation cover are separated by friction;

[0032] S5. When the docking frame is out of contact with the storage box, the dust on the inner wall of the docking frame can be cleaned, and the baffle can be removed to clean the inside of the dispersion box.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention injects the flue gas generated during the copper concentrate smelting process into the discharge assembly and moves it upward along the channel between the protective cover and the heat insulation cover. The heat carried by the flue gas during the upward movement in the channel is conducted to the storage tube through the protective cover, so that the temperature of the storage tube is gradually increased, and the copper concentrate in the storage tube is preheated. Since the protective cover and the heat insulation cover are corrugated, the channel formed is corrugated, which can effectively increase the residence time of the flue gas in the channel, maximize the utilization of the heat carried by the flue gas, and ensure the preheating effect of the copper concentrate through the continuous generation of flue gas.

[0035] The present invention seals the bottom end of the storage tube by installing a sealing plate on the outside of the threaded rod, and the copper concentrate is injected into the storage box through the injection pipe. The copper concentrate is located at the outer edge of the storage box under the guidance of the protrusion, and the top cover and the first transmission gear are rotated to drive the second transmission gear, the storage tube and the auger to rotate, so that the copper concentrate can enter the storage tube through the rotation of the auger.

[0036] The present invention causes the docking frame to be separated from the storage box by rotating the docking nut, and the docking frame moves downward along the guide rod, thereby driving the connecting frame, the heat insulation cover and the protective cover to move downward, and the slider moves downward along the slider provided on the surface of the storage tube, so that the protective cover and the heat insulation cover are compressed and contacted with each other. At this time, the storage tube is driven to rotate by rotating the top cover and the first transmission gear, and the protective cover is driven to rotate at the same time, so that friction is formed between the protective cover and the heat insulation cover, and the smoke attached to the protective cover and the heat insulation cover is separated by friction, thereby improving the conduction of smoke heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0038] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0039] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0040] Figure 4 For the present invention Figure 2 The enlarged structural diagram at B in the middle;

[0041] Figure 5 For the present invention Figure 2 The enlarged structural diagram at C in the middle;

[0042] Figure 6 It is a schematic diagram of the cross-sectional structure of the heat insulation cover and the protective cover of the present invention;

[0043] Figure 7 This is a schematic diagram of the disassembled structure of the guide assembly of the present invention;

[0044] Figure 8 This is a schematic diagram of the disassembled structure of the storage component of the present invention;

[0045] Fig. 9 It is a schematic diagram of the internal structure of the discharge assembly of the present invention.

[0046] In the figure: 1. support frame; 4. connecting assembly; 41. docking frame; 42. smoke exhaust pipe; 43. docking nut; 5. storage assembly; 51. top cover; 52. injection pipe; 53. storage box; 54. first transmission gear; 55. protective plate; 56. bump; 6. discharge assembly; 61. dispersion box; 62. smoke inlet pipe; 63. guide rod; 64. baffle; 65. sealing plate; 66. threaded rod; 67. stabilizing frame; 7. guide assembly; 71. second transmission gear; 72. storage pipe; 73. auger; 74. support rod; 75. connecting frame; 76. heat insulation cover; 77. protective cover; 78. vertical groove; 79. slider. DETAILED DESCRIPTION

[0047] 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.

[0048] like Figures 1 to 9 As shown, the present invention provides a copper smelting waste heat recovery and utilization device, including a support frame 1, and also including:

[0049] A discharge assembly 6, which is mounted on the support frame 1;

[0050] A storage component 5, the storage component 5 is arranged on the discharge component 6;

[0051] A connecting component 4, wherein the connecting component 4 is sleeved on the discharge component 6;

[0052] A guide assembly 7, wherein the guide assembly 7 is disposed between the discharge assembly 6 and the storage assembly 5;

[0053] The connection assembly 4 includes a docking frame 41 movably sleeved on the discharge assembly 6, and a through hole is opened at the bottom of the docking frame 41;

[0054] The guide assembly 7 includes a storage tube 72 sleeved inside the storage assembly 5, a connecting frame 75 is fixedly installed in the through hole, a through groove is opened on the surface of the connecting frame 75, a heat insulation cover 76 is fixedly installed at the bottom of the connecting frame 75, and a protective cover 77 is movably sleeved on the bottom of the connecting frame 75;

[0055] The inner wall of the protective cover 77 contacts the outside of the storage tube 72, the bottom of the protective cover 77 is fixedly connected to the outside of the storage tube 72, and the connecting frame 75 is movably sleeved on the outside of the storage tube 72;

[0056] A channel is formed between the protective cover 77 and the heat insulation cover 76, and the bottom of the channel is connected to the discharge assembly 6, and the top end is connected to the docking frame 41;

[0057] The storage tube 72 is made of copper and is used to store copper concentrate. The protective cover 77 and the heat insulation cover 76 are in the shape of a corrugated cylinder.

[0058] The flue gas moves upward along the passage between the protective cover 77 and the heat insulation cover 76 through the discharge assembly 6, and the heat is transferred to the storage tube 72 to preheat the copper concentrate.

[0059] The flue gas generated during the smelting process of the copper concentrate is injected into the discharge assembly 6 and moves upward along the channel between the protective cover 77 and the heat insulation cover 76. The heat carried by the flue gas during the upward movement in the channel is conducted through the protective cover 77 to the cavity between the protective cover 77 and the storage tube 72, so that the temperature of the storage tube 72 gradually increases, and the copper concentrate in the storage tube 72 is preheated. Since the protective cover 77 and the heat insulation cover 76 are corrugated, the channel formed is corrugated, which can effectively increase the residence time of the flue gas in the channel, maximize the utilization of the heat carried by the flue gas, and ensure the preheating effect of the copper concentrate through the continuous generation of flue gas. The flue gas enters the connecting assembly 4 through the channel and is discharged for the next step of processing.

[0060] like Figure 2 , Figure 3 , Figure 8 and Fig. 9 As shown, the discharge assembly 6 includes a dispersion box 61 mounted on the support frame 1, a baffle 64 is bolted to the bottom of the dispersion box 61 so that the dispersion box 61 is in a sealed cavity, and a smoke inlet pipe 62 is installed outside the dispersion box 61;

[0061] A guide rod 63 is fixedly mounted on the top of the dispersion box 61;

[0062] The lower end of the storage tube 72 passes through the dispersion box 61 and the baffle 64. A threaded rod 66 is installed at the bottom of the baffle 64. A blocking plate 65 for blocking the bottom of the storage tube 72 is installed on the outside of the threaded rod 66 through a nut.

[0063] A stabilizing frame 67 is fixedly mounted on the top of the dispersion box 61, and the stabilizing frame 67 is movably sleeved on the outside of the storage tube 72;

[0064] The storage assembly 5 includes a storage box 53 mounted on the upper end of the guide rod 63, a protective plate 55 is installed in the middle of the storage box 53, a top cover 51 is movably sleeved on the upper end of the storage box 53, and a material injection pipe 52 connected to the inside of the storage box 53 is arranged in the middle of the top cover 51;

[0065] A protrusion 56 is fixedly mounted on the bottom of the storage box 53. The protrusion 56 and the injection tube 52 are kept coaxial and vertical. The inner diameter of the storage box 53 gradually increases from the upper and lower ends to the middle part.

[0066] A support rod 74 is installed on the top of the storage tube 72, and an auger 73 is fixedly installed on the inner wall of the storage tube 72, and the top end of the auger 73 is connected to the top end of the support rod 74;

[0067] The top end of the storage tube 72 is sleeved inside the storage box 53;

[0068] The second transmission gear 71 is fixedly mounted on the top of the support rod 74 , and the first transmission gear 54 meshing with the second transmission gear 71 is fixedly mounted on the inner wall of the top cover 51 .

[0069] The bottom end of the storage tube 72 is sealed by installing a sealing plate 65 on the outside of the threaded rod 66, and the copper concentrate is injected into the storage box 53 through the injection pipe 52. The copper concentrate is located on the outer edge of the storage box 53 under the guidance of the protrusion 56. At the same time, the top cover 51 and the first transmission gear 54 are rotated to drive the second transmission gear 71, the storage tube 72 and the auger 73 to rotate. The rotation of the auger 73 facilitates the copper concentrate to enter the storage tube 72. The copper concentrate is located in the storage tube 72 and is separated by the auger 73, which can improve the efficiency of copper concentrate preheating.

[0070] like Figure 2-Figure 8 As shown, the connection assembly 4 further includes a docking nut 43 movably disposed outside the docking frame 41;

[0071] The docking frame 41 is sleeved on the outside of the guide rod 63. A thread groove is provided on the upper end of the guide rod 63. The docking frame 41 is fitted with the bottom of the storage box 53 by the cooperation between the docking nut 43 and the thread groove on the outside of the guide rod 63.

[0072] The guide assembly 7 further includes a slider 79 fixed to the inner wall of the protective cover 77 , and a vertical groove 78 for the slider 79 to slide vertically is provided on the outside of the storage tube 72 .

[0073] The copper concentrate is injected into the storage tube 72, and the flue gas generated by the smelting of the copper concentrate enters the dispersion box 61 through the smoke inlet pipe 62, and moves upward along the channel of the protective cover 77 and the heat insulation cover 76. During the upward movement, the heat in the flue gas preheats the copper concentrate in the storage tube 72, and the flue gas moves upward into the docking frame 41 and is discharged through the exhaust pipe 42. During the movement of the flue gas in the channel between the protective cover 77 and the heat insulation cover 76, the particulate impurities carried by the flue gas adhere to the protective cover 77 and the heat insulation cover 76. The docking frame 41 is separated from the contact with the storage box 53 by rotating the docking nut 43 regularly, and the docking frame 41 moves downward along the guide rod 63, thereby driving the connecting frame 75, the heat insulation cover 76 and the protective cover 77 to move downward, and the slider 79 moves downward along the slider 79 opened on the surface of the storage tube 72;

[0074] Since the protective cover 77 and the heat insulation cover 76 are in a corrugated cylindrical shape, the protective cover 77 and the heat insulation cover 76 are compressed and contacted with each other. At this time, the storage tube 72 is driven to rotate by rotating the top cover 51 and the first transmission gear 54, and the protective cover 77 is driven to rotate at the same time, so that friction is formed between the protective cover 77 and the heat insulation cover 76. The smoke and dust attached to the protective cover 77 and the heat insulation cover 76 are separated by friction, and the smoke and dust on the protective cover 77 and the heat insulation cover 76 are cleaned, thereby improving the conduction of flue gas heat and ensuring the preheating effect of the copper concentrate;

[0075] When the docking frame 41 is out of contact with the storage box 53, the dust on the inner wall of the docking frame 41 can be cleaned, and the baffle plate 64 can be removed to clean the inside of the dispersion box 61. After the copper concentrate is preheated, the sealing plate 65 can be removed to discharge it.

[0076] The present invention also provides a method for recovering waste heat from copper smelting, comprising the following steps:

[0077] S1. The bottom end of the storage tube 72 is blocked by installing the blocking plate 65 on the outside of the threaded rod 66. The copper concentrate is injected into the storage box 53 through the injection pipe 52. The auger 73 is rotated to facilitate the copper concentrate to enter the storage tube 72.

[0078] S2. The flue gas generated during the smelting process of the copper concentrate is injected into the discharge assembly 6 and moves upward along the channel between the protective cover 77 and the heat insulation cover 76. The heat carried by the flue gas during the upward movement in the channel is conducted through the protective cover 77 to the cavity between the protective cover 77 and the storage tube 72, so that the temperature of the storage tube 72 gradually increases, and the copper concentrate in the storage tube 72 is preheated. After the preheating of the copper concentrate is completed, the sealing plate 65 can be removed to discharge it;

[0079] S3, while the smoke moves in the channel between the protective cover 77 and the heat insulation cover 76, the particulate impurities carried in the smoke adhere to the protective cover 77 and the heat insulation cover 76, and the docking frame 41 is moved down along the guide rod 63 by rotating the docking nut 43 regularly, thereby driving the connecting frame 75, the heat insulation cover 76 and the protective cover 77 to move down, and the slider 79 moves down along the slider 79 opened on the surface of the storage tube 72;

[0080] S4. Since the protective cover 77 and the heat insulation cover 76 are in the shape of a corrugated cylinder, the protective cover 77 and the heat insulation cover 76 are compressed and contacted with each other. By rotating the top cover 51 and the first transmission gear 54, the first transmission gear 54 cooperates with the second transmission gear 71 to drive the second transmission gear 71 and the storage tube 72 to rotate, and at the same time drive the protective cover 77 to rotate, so that friction is formed between the protective cover 77 and the heat insulation cover 76, and the smoke and dust attached to the protective cover 77 and the heat insulation cover 76 are separated by friction;

[0081] S5. When the docking frame 41 is out of contact with the storage box 53, the dust on the inner wall of the docking frame 41 can be cleaned, and at the same time, the baffle 64 can be removed to clean the inside of the dispersion box 61.

[0082] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0083] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A copper smelting waste heat recovery and utilization device, comprising a support frame (1), characterized in that: Also includes: A discharge assembly (6), the discharge assembly (6) being mounted on the support frame (1); A storage component (5), the storage component (5) being arranged on the discharge component (6); A connecting component (4), wherein the connecting component (4) is sleeved on the discharge component (6); A guide assembly (7), wherein the guide assembly (7) is arranged between the discharge assembly (6) and the storage assembly (5); Wherein, the connecting component (4) comprises a docking frame (41) movably sleeved on the discharge component (6), and a through hole is formed at the bottom of the docking frame (41); The guide assembly (7) comprises a storage tube (72) sleeved inside the storage assembly (5); a connecting frame (75) is fixedly mounted in the through hole; a through groove is provided on the surface of the connecting frame (75); a heat insulation cover (76) is fixedly mounted on the bottom of the connecting frame (75); and a protective cover (77) is movably sleeved on the bottom of the connecting frame (75); The inner wall of the protective cover (77) contacts the outside of the storage tube (72), the bottom of the protective cover (77) is fixedly connected to the outside of the storage tube (72), and the connecting frame (75) is movably sleeved on the outside of the storage tube (72); A channel is formed between the protective cover (77) and the heat insulation cover (76), and the bottom of the channel is connected to the discharge assembly (6), and the top of the channel is connected to the inside of the docking frame (41); The storage tube (72) is made of copper and is used to store copper concentrate. The protective cover (77) and the heat insulation cover (76) are in the shape of a corrugated cylinder. The flue gas moves upward along the passage between the protective cover (77) and the heat insulation cover (76) through the discharge assembly (6), and the heat is transferred to the storage tube (72) to preheat the copper concentrate.

2. The copper smelting waste heat recovery and utilization device according to claim 1 is characterized in that: The discharge assembly (6) comprises a dispersion box (61) mounted on the support frame (1); a baffle (64) is connected to the bottom of the dispersion box (61) via bolts so that the dispersion box (61) is in a sealed cavity; and a smoke inlet pipe (62) is installed outside the dispersion box (61); A guide rod (63) is fixedly mounted on the top of the dispersion box (61).

3. The copper smelting waste heat recovery and utilization device according to claim 2 is characterized in that: The lower end of the storage tube (72) passes through the dispersion box (61) and the baffle (64); a threaded rod (66) is installed at the bottom of the baffle (64); and a blocking plate (65) for blocking the bottom of the storage tube (72) is installed on the outside of the threaded rod (66) via a nut; A stabilizing frame (67) is fixedly mounted on the top of the dispersion box (61), and the stabilizing frame (67) is movably sleeved on the outside of the storage tube (72).

4. The copper smelting waste heat recovery and utilization device according to claim 2 is characterized in that: The storage assembly (5) comprises a storage box (53) mounted on the upper end of the guide rod (63), a protective plate (55) being mounted in the middle of the storage box (53), a top cover (51) being movably sleeved on the upper end of the storage box (53), and a material injection pipe (52) communicating with the interior of the storage box (53) being disposed in the middle of the top cover (51).

5. The copper smelting waste heat recovery and utilization device according to claim 4 is characterized in that: A protrusion (56) is fixedly mounted on the bottom of the storage box (53), and the protrusion (56) and the injection tube (52) are kept coaxial and vertical. The inner diameter of the storage box (53) gradually increases from the upper and lower ends to the middle.

6. The copper smelting waste heat recovery and utilization device according to claim 5 is characterized in that: A support rod (74) is installed on the top of the storage tube (72), an auger (73) is fixedly installed on the inner wall of the storage tube (72), and the top end of the auger (73) is connected to the top end of the support rod (74); The top end of the storage tube (72) is sleeved inside the storage box (53).

7. The copper smelting waste heat recovery and utilization device according to claim 6 is characterized in that: A second transmission gear (71) is fixedly mounted on the top of the support rod (74), and a first transmission gear (54) meshing with the second transmission gear (71) is fixedly mounted on the inner wall of the top cover (51).

8. The copper smelting waste heat recovery and utilization device according to claim 7 is characterized in that: The connecting assembly (4) further comprises a docking nut (43) movably arranged outside the docking frame (41); The docking frame (41) is sleeved on the outside of the guide rod (63), and a thread groove is formed on the upper end of the guide rod (63). The docking nut (43) and the thread groove on the outside of the guide rod (63) cooperate to make the top of the docking frame (41) fit with the bottom of the storage box (53).

9. The copper smelting waste heat recovery and utilization device according to claim 8, characterized in that: The guide assembly (7) further comprises a sliding block (79) fixedly mounted on the inner wall of the protective cover (77), and a vertical groove (78) for the sliding block (79) to slide vertically is provided on the outside of the storage tube (72).

10. A method for recovering waste heat from copper smelting, using the device for recovering waste heat from copper smelting as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, a sealing plate (65) is installed on the outside of the threaded rod (66) to seal the bottom end of the storage tube (72), and the copper concentrate is injected into the storage box (53) through the injection pipe (52), and the auger (73) is rotated to facilitate the copper concentrate to enter the storage tube (72); S2. Flue gas generated during the smelting process of the copper concentrate is injected into the discharge assembly (6) and moves upward along the channel between the protective cover (77) and the heat insulation cover (76). The heat carried by the flue gas during the upward movement in the channel is conducted through the protective cover (77) to the cavity between the protective cover (77) and the storage tube (72), so that the temperature of the storage tube (72) gradually increases, and the copper concentrate in the storage tube (72) is preheated. After the preheating of the copper concentrate is completed, the sealing plate (65) can be removed to discharge it; S3, while the smoke moves in the channel between the protective cover (77) and the heat insulation cover (76), particulate impurities carried in the smoke adhere to the protective cover (77) and the heat insulation cover (76), and the docking frame (41) is moved downward along the guide rod (63) by rotating the docking nut (43) periodically, thereby driving the connecting frame (75), the heat insulation cover (76) and the protective cover (77) to move downward, and the slider (79) moves downward along the slider (79) provided on the surface of the storage tube (72); S4. Since the protective cover (77) and the heat insulation cover (76) are in the shape of a corrugated cylinder, the protective cover (77) and the heat insulation cover (76) are compressed and contact each other. By rotating the top cover (51) and the first transmission gear (54), the first transmission gear (54) and the second transmission gear (71) cooperate to drive the second transmission gear (71) and the storage tube (72) to rotate, and at the same time drive the protective cover (77) to rotate, so that friction is generated between the protective cover (77) and the heat insulation cover (76), and smoke and dust attached to the protective cover (77) and the heat insulation cover (76) are separated by friction; S5, the docking frame (41) is separated from the storage box (53), and the dust on the inner wall of the docking frame (41) can be cleaned, and the baffle (64) can be removed to clean the inside of the dispersion box (61).

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