Environment-friendly prebaked anode carbon block and preparation method thereof

Abstract

The invention provides an environment-friendly prebaked anode carbon block and a preparation method, and relates to the technical field of prebaked anode carbon block production.The environment-friendly prebaked anode carbon block comprises a carbon block body, a groove is formed in the upper surface of the carbon block body, a boss is arranged in the groove, a carbon bowl is arranged in the boss, and the carbon bowl is arranged in the carbon block body. A plurality of through grooves are formed in the upper surface of the carbon block body, and the two ends of each through groove are communicated with the corresponding grooves respectively. A cooling agent is sprayed into the vibration hopper in the process that the spraying pipe moves along with the steel fork, so that raw materials are sprayed, in the spraying process, a worker starts a motor, an output shaft of the motor drives a two-way lead screw to rotate, the rotating two-way lead screw drives a sliding block to move in a thread screwing-in mode, and the cooling agent is sprayed into the vibration hopper. The spraying pipe moves along with the sliding block in the direction of the positioning rod, the spraying range of the spraying pipe is enlarged, raw materials in the vibration hopper can be fully cooled, and the dimensional accuracy and the structural stability of carbon blocks are prevented from being affected.

Description

Technical Field

[0001] The present invention relates to the technical field of prebaked anode carbon block production, and in particular to an environmentally friendly prebaked anode carbon block and a preparation method thereof. Background Art

[0002] Prebaked anode carbon blocks are made of petroleum coke and asphalt coke as aggregates and coal tar as binder, and are used as anode materials for prebaked aluminum electrolytic cells. This type of carbon block has a stable geometric shape and good electrical conductivity after high-temperature baking, so it is also called a carbon anode for aluminum electrolysis. When the existing prebaked anode carbon blocks are placed in the molding equipment for molding, the spray structure in the equipment needs to be used to spray the raw materials so that they can be quickly cooled and molded. The spray structure in the existing molding equipment is fixed in position, and the raw materials in some areas cannot be fully sprayed and cooled, resulting in too slow cooling speed. As a result, the shrinkage of different parts of the carbon block is inconsistent during the molding process, resulting in stress concentration, affecting the dimensional accuracy and structural stability of the carbon block. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides an environmentally friendly prebaked anode carbon block and a preparation method, which solves the problem that during the production process of anode carbon blocks, the spray structure in the molding equipment is fixed in position, and the raw materials in some areas cannot be fully spray-cooled, resulting in too slow cooling speed. As a result, different parts of the carbon block shrink inconsistently during the molding process, resulting in stress concentration, and affecting the dimensional accuracy and structural stability of the carbon block.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] An environmentally friendly prebaked anode carbon block comprises a carbon block body, wherein the upper surface of the carbon block body is provided with a groove, a boss is provided in the groove, and a carbon bowl is provided in the boss;

[0006] A plurality of through grooves are arranged on the upper surface of the carbon block body, and two ends of the through grooves are respectively connected with corresponding grooves.

[0007] A method for preparing an environmentally friendly prebaked anode carbon block, the method comprising the following steps:

[0008] S1: Raw material preparation, crushing and screening carbonaceous materials, carbon fibers and asphalt respectively;

[0009] S2: Mixing and stirring, mixing the above raw materials and stirring at a constant temperature;

[0010] S3: molding, pouring the mixed raw materials into the molding device through the feeding machine to mold the raw materials into green anodes;

[0011] S4: Grooving treatment, accurately cutting the required through grooves on the surface of the anode carbon block;

[0012] S5: Calcination, preheating the carbon block at low temperature, then adding a binder to form coke, and finally high-temperature heat treatment to coke the asphalt and form a whole with the dry material;

[0013] S6: Cooling: cooling the carbon block to obtain a finished product.

[0014] Preferably, the forming device in step 3 comprises a base, a right-angle frame is fixedly mounted on the upper surface of the base, a first guide rail is arranged on the top of the right-angle frame, a second guide rail is arranged on the movable end of the first guide rail, a cylinder is fixedly mounted on the movable end of the second guide rail through a bracket, a lifting frame is fixedly mounted on the output end of the cylinder, and a flat material assembly for flattening the material is arranged on the lower surface of the lifting frame;

[0015] Both sides of the lifting frame are provided with spraying components for spraying and cooling the raw materials sufficiently;

[0016] A vibrating hopper is arranged on one side of the upper surface of the base.

[0017] Preferably, the flat material assembly comprises a steel fork, and the steel fork is fixedly mounted on the lower surface of the lifting frame.

[0018] Preferably, the spray assembly comprises a positioning frame, the positioning frame is fixedly mounted on a corresponding side of the lifting frame, a bidirectional screw is rotatably mounted between the two sides of the inner wall of the positioning frame, sliders are threadedly arranged on both sides of the bidirectional screw shaft, and a spray pipe is rotatably mounted on one side of the two sliders through a rotating shaft;

[0019] A motor is fixedly mounted on one side of the positioning frame, and one end of the bidirectional screw rod passes through the positioning frame and is fixedly connected to the output shaft end of the motor.

[0020] Preferably, positioning rods are fixedly installed between the inner walls of the two positioning frames, and the adjacent sliding blocks are slidably arranged on the two sides of the corresponding positioning rod bodies.

[0021] Preferably, each of the rotating shafts is sleeved with a gear;

[0022] First racks are fixedly mounted on both sides of the inner walls of the two positioning frames;

[0023] Support blocks are fixedly installed on both sides of the lifting frame, and second racks are fixedly installed on both sides of the two support blocks. Each of the gears is respectively meshed with the corresponding first rack and second rack.

[0024] Preferably, an arc groove is provided on the surface of each rotating shaft, and a limiting structure for limiting position is provided on the side of each sliding block close to the spray pipe.

[0025] Preferably, the limiting structure comprises two mounting columns, both of which are fixedly mounted on the side of the corresponding slider close to the spray pipe, and a mounting ring is fixedly mounted on one end of the two mounting columns, and a sliding column is penetrated through the outer wall of the mounting ring, and an arc block is fixedly mounted on the opposite end of the two sliding columns;

[0026] The two sliding column bodies are sleeved with springs capable of compression and reset on one side close to the corresponding arc-shaped blocks.

[0027] Preferably, connecting plates are fixedly mounted on both sides of the upper surface of the lifting frame, and a shielding cover is fixedly mounted on one side of the two connecting plates away from each other.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. During the movement of the steel fork, the staff controls the coolant in the water tank to enter the spray pipe, and sprays the coolant into the vibrating hopper as the spray pipe moves with the steel fork, thereby spraying the raw materials. During the spraying process, the staff starts the motor to make its output shaft drive the bidirectional screw to rotate. The rotating bidirectional screw drives the slider to move by screwing in the thread, so that the spray pipe follows the slider to move along the direction of the positioning rod, thereby increasing the spray range of the spray pipe. The raw materials in the vibrating hopper can be fully cooled to avoid affecting the dimensional accuracy and structural stability of the carbon blocks.

[0030] 2. When the slider drives the spray pipe to move, the gears are in contact and mesh with the first rack and the second rack respectively. At this time, the rotating shaft drives the spray pipe to rotate, so that the spray range of the spray pipe is further increased, so that the raw materials inside the vibrating hopper are cooled more evenly and fully.

[0031] 3. When the gear is out of contact with the first rack and the second rack, the arc groove moves to the position of the arc block. At this time, the spring is reset, and the elastic force generated makes the arc block tightly fit with the arc groove, thereby limiting the rotating shaft, thereby preventing the gear from being unable to mesh with the first rack and the second rack when in contact, thereby improving the stability of the device during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall structure of an environmentally friendly prebaked anode carbon block of the present invention;

[0033] Figure 2 It is a schematic diagram of the overall structure of the molding device of the present invention;

[0034] Figure 3 It is a front view structural schematic diagram of the molding device of the present invention;

[0035] Figure 4 It is a schematic diagram of the top view of the molding device of the present invention;

[0036] Figure 5 For the present invention Figure 3 Schematic diagram of the cross-section structure at AA in the middle;

[0037] Figure 6 For the present invention Figure 4 Schematic diagram of the cross-section structure at BB in the middle;

[0038] Figure 7 For the present invention Figure 5 The enlarged structural diagram at A in the middle;

[0039] Figure 8 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0040] Fig. 9 For the present invention Figure 6 Enlarged structural diagram at point C in the middle.

[0041] In the figure: 1. base; 101. vibrating hopper; 2. right-angle frame; 3. first guide rail; 4. second guide rail; 5. bracket; 501. cylinder; 6. lifting frame; 7. flat material assembly; 701. steel fork; 8. spray assembly; 801. positioning frame; 802. two-way screw rod; 803. slider; 804. rotating shaft; 805. spray pipe; 806. motor; 9. positioning rod; 10. gear; 11. first rack; 12. support block; 13. second rack; 14. arc groove; 15. limiting structure; 1501. mounting column; 1502. mounting ring; 1503. sliding column; 1504. arc block; 1505. spring; 16. connecting plate; 17. shielding cover; 18. carbon block body; 19. groove; 20. boss; 21. carbon bowl; 22. through groove. DETAILED DESCRIPTION

[0042] The following will be combined with 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 making creative work are within the scope of protection of the present invention.

[0043] like Figure 1-Figure 9 As shown, an environmentally friendly prebaked anode carbon block includes a carbon block body 18, a groove 19 is provided on the upper surface of the carbon block body 18, a boss 20 is provided in the groove 19, and a carbon bowl 21 is provided in the boss 20;

[0044] A plurality of through grooves 22 are disposed on the upper surface of the carbon block body 18 , and two ends of the through grooves 22 are respectively connected to the corresponding grooves 19 .

[0045] A method for preparing an environmentally friendly prebaked anode carbon block, the method comprising the following steps:

[0046] S1: Raw material preparation, crushing and screening carbonaceous materials, carbon fibers and asphalt respectively;

[0047] S2: Mixing and stirring, mixing the above raw materials and stirring at a constant temperature;

[0048] S3: molding, pouring the mixed raw materials into the molding device through the feeding machine to mold the raw materials into green anodes;

[0049] S4: Grooving process, precisely cutting the required through grooves 22 on the surface of the anode carbon block;

[0050] S5: Calcination, preheating the carbon block at low temperature, then adding a binder to form coke, and finally high-temperature heat treatment to coke the asphalt and form a whole with the dry material;

[0051] S6: Cooling: cooling the carbon block to obtain a finished product.

[0052] By setting through grooves 22 between adjacent grooves 19 of the carbon block main body 18, after the through grooves 22 are set between adjacent grooves 19 of the carbon block main body 18, during the combustion process, the through grooves 22 are set to increase the channel for heat conduction, and the heat can be transferred more quickly inside the carbon block through the through grooves 22, making the temperature distribution inside the carbon block more uniform, thereby making fuller use of the carbon block main body 18 and achieving environmental protection.

[0053] The forming device in step 3 includes a base 1, a right angle frame 2 is fixedly installed on the upper surface of the base 1, a first guide rail 3 is arranged on the top of the right angle frame 2, a second guide rail 4 is arranged on the movable end of the first guide rail 3, a cylinder 501 is fixedly installed on the movable end of the second guide rail 4 through a bracket 5, a lifting frame 6 is fixedly installed on the output end of the cylinder 501, and a flat material assembly 7 for flattening the material is arranged on the lower surface of the lifting frame 6;

[0054] Both sides of the lifting frame 6 are provided with spraying components 8 for spraying and cooling the raw materials sufficiently;

[0055] A vibrating hopper 101 is provided on one side of the upper surface of the base 1 .

[0056] The flat material assembly 7 includes a steel fork 701 , which is fixedly mounted on the lower surface of the lifting frame 6 .

[0057] The spray assembly 8 includes a positioning frame 801, which is fixedly mounted on the corresponding side of the lifting frame 6. A bidirectional screw rod 802 is rotatably mounted between the two sides of the inner wall of the positioning frame 801. Slide blocks 803 are threadedly arranged on both sides of the bidirectional screw rod 802. Spray pipes 805 are rotatably mounted on one side of the two slide blocks 803 through a rotating shaft 804.

[0058] A motor 806 is fixedly mounted on one side of the positioning frame 801 , and one end of the bidirectional screw rod 802 passes through the positioning frame 801 and is fixedly connected to the output shaft end of the motor 806 .

[0059] Positioning rods 9 are fixedly installed between the inner walls of the two positioning frames 801 , and adjacent sliding blocks 803 are slidably arranged on the two sides of the corresponding positioning rods 9 .

[0060] The staff connected the bellows at the output end of the water tank to the spray pipe 805, and then started the first guide rail 3, the second guide rail 4 and the cylinder 501, so that the steel fork 701 could move into the vibrating hopper 101 and reciprocate. At this time, the staff started the vibration motor inside the vibrating hopper 101. Under the vibration of the vibrating hopper 101 and the reciprocating movement of the steel fork 701, the raw materials were leveled. During the movement of the steel fork 701, the staff controlled the coolant in the water tank to enter the spray pipe 805. When the spray pipe 805 followed During the movement of the steel fork 701, the coolant is sprayed into the inside of the vibrating hopper 101, thereby spraying the raw materials. During the spraying process, the staff starts the motor 806 to make its output shaft drive the bidirectional screw 802 to rotate. The rotating bidirectional screw 802 drives the slider 803 to move by screwing in the thread, so that the spray pipe 805 follows the slider 803 to move along the direction of the positioning rod 9, thereby increasing the spray range of the spray pipe 805. The raw materials in the vibrating hopper 101 can be fully cooled to avoid affecting the dimensional accuracy and structural stability of the carbon blocks.

[0061] Each shaft 804 is sleeved with a gear 10;

[0062] First racks 11 are fixedly mounted on both sides of the inner walls of the two positioning frames 801;

[0063] Support blocks 12 are fixedly installed on both sides of the lifting frame 6, and second racks 13 are fixedly installed on both sides of the two support blocks 12. Each gear 10 is meshed with the corresponding first rack 11 and second rack 13 respectively.

[0064] When the slider 803 drives the spray pipe 805 to move, the gear 10 contacts and meshes with the first rack 11 and the second rack 13 respectively. At this time, the rotating shaft 804 drives the spray pipe 805 to rotate, so that the spray range of the spray pipe 805 is further increased, so that the raw materials inside the vibrating hopper 101 are cooled more evenly and fully.

[0065] An arc groove 14 is provided on the shaft surface of each rotating shaft 804 , and a limiting structure 15 for limiting position is provided on the side of each sliding block 803 close to the spray pipe 805 .

[0066] The limiting structure 15 includes two mounting columns 1501, and the two mounting columns 1501 are fixedly mounted on the corresponding slider 803 near the spray pipe 805. A mounting ring 1502 is fixedly mounted on one end of the two mounting columns 1501. The outer wall of the mounting ring 1502 is penetrated by a sliding column 1503. The two sliding columns 1503 are fixedly mounted on the opposite ends with an arc block 1504.

[0067] The two sliding columns 1503 are sleeved with springs 1505 that can be compressed and reset on one side of the column body close to the corresponding arc block 1504.

[0068] When the gear 10 loses contact with the first rack 11 and the second rack 13, the arc groove 14 moves to the position of the arc block 1504. At this time, the spring 1505 resets, and the elastic force generated makes the arc block 1504 tightly fit with the arc groove 14, so that the rotating shaft 804 is limited to avoid the gear 10 from being unable to mesh with the first rack 11 and the second rack 13 when they are in contact, thereby improving the stability of the device during operation.

[0069] Wherein, connecting plates 16 are fixedly installed on both sides of the upper surface of the lifting frame 6, and a shielding cover 17 is fixedly installed on one side of the two connecting plates 16 away from each other.

[0070] By providing the shielding cover 17, it is prevented that the cooling liquid in contact with the raw material splashes into the surrounding working environment due to excessively high flow rate.

[0071] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. An environmentally friendly prebaked anode carbon block, comprising a carbon block body (18), characterized in that: The upper surface of the carbon block body (18) is provided with a groove (19), a boss (20) is provided in the groove (19), and a carbon bowl (21) is provided in the boss (20); A plurality of through grooves (22) are provided on the upper surface of the carbon block body (18), and two ends of the through grooves (22) are respectively connected to corresponding grooves (19).

2. A method for preparing an environmentally friendly prebaked anode carbon block, characterized in that: The method of use includes the following steps: S1: Raw material preparation, crushing and screening carbonaceous materials, carbon fibers and asphalt respectively; S2: Mixing and stirring, mixing the above raw materials and stirring at a constant temperature; S3: molding, pouring the mixed raw materials into the molding device through the feeding machine to mold the raw materials into green anodes; S4: Grooving treatment, precisely cutting the required through grooves (22) on the surface of the anode carbon block; S5: Calcination, preheating the carbon block at low temperature, then adding a binder to form coke, and finally high-temperature heat treatment to coke the asphalt and form a whole with the dry material; S6: Cooling: cooling the carbon block to obtain a finished product.

3. The method for preparing an environmentally friendly prebaked anode carbon block according to claim 2, characterized in that: The forming device in step 3 comprises a base (1), a right angle frame (2) is fixedly mounted on the upper surface of the base (1), a first guide rail (3) is arranged at the top of the right angle frame (2), a second guide rail (4) is arranged at the movable end of the first guide rail (3), a cylinder (501) is fixedly mounted at the movable end of the second guide rail (4) through a bracket (5), a lifting frame (6) is fixedly mounted at the output end of the cylinder (501), and a flat material assembly (7) for flattening the material is arranged on the lower surface of the lifting frame (6); Both sides of the lifting frame (6) are provided with spraying components (8) for spraying and cooling the raw materials sufficiently; A vibrating hopper (101) is provided on one side of the upper surface of the base (1).

4. The method for preparing an environmentally friendly prebaked anode carbon block according to claim 3, characterized in that: The flat material assembly (7) comprises a steel fork (701), and the steel fork (701) is fixedly mounted on the lower surface of the lifting frame (6).

5. The method for preparing an environmentally friendly prebaked anode carbon block according to claim 4, characterized in that: The spray assembly (8) comprises a positioning frame (801), wherein the positioning frame (801) is fixedly mounted on a corresponding side of the lifting frame (6), a bidirectional screw rod (802) is rotatably mounted between two sides of the inner wall of the positioning frame (801), sliders (803) are threadedly mounted on both sides of the rod body of the bidirectional screw rod (802), and a spray pipe (805) is rotatably mounted on one side of the two sliders (803) via a rotating shaft (804); A motor (806) is fixedly mounted on one side of the positioning frame (801), and one end of the bidirectional screw rod (802) passes through the positioning frame (801) and is fixedly connected to the output shaft end of the motor (806).

6. The method for preparing an environmentally friendly prebaked anode carbon block according to claim 5, characterized in that: A positioning rod (9) is fixedly installed between the inner walls of the two positioning frames (801), and the adjacent sliding blocks (803) are slidably arranged on both sides of the corresponding positioning rod (9).

7. The method for preparing an environmentally friendly prebaked anode carbon block according to claim 6, characterized in that: Each of the rotating shafts (804) is sleeved with a gear (10); First racks (11) are fixedly mounted on both sides of the inner walls of the two positioning frames (801); Support blocks (12) are fixedly mounted on both sides of the lifting frame (6), and second racks (13) are fixedly mounted on both sides of the two support blocks (12), and each of the gears (10) is respectively meshed with the corresponding first rack (11) and second rack (13).

8. The method for preparing an environmentally friendly prebaked anode carbon block according to claim 7, characterized in that: An arc groove (14) is provided on the shaft surface of each rotating shaft (804), and a limiting structure (15) for limiting position is provided on the side of each sliding block (803) close to the spray pipe (805).

9. The method for preparing an environmentally friendly prebaked anode carbon block according to claim 8, characterized in that: The limiting structure (15) comprises two mounting columns (1501), the two mounting columns (1501) are fixedly mounted on the side of the corresponding sliding block (803) close to the spray pipe (805), a mounting ring (1502) is fixedly mounted on one end of the two mounting columns (1501), a sliding column (1503) is penetrated through the outer wall of the mounting ring (1502), and an arc block (1504) is fixedly mounted on the opposite end of the two sliding columns (1503); The two sliding columns (1503) are sleeved with springs (1505) capable of compression and reset on one side of the column body close to the corresponding arc block (1504).

10. The method for preparing an environmentally friendly prebaked anode carbon block according to claim 3, characterized in that: Connecting plates (16) are fixedly mounted on both sides of the upper surface of the lifting frame (6), and a shielding cover (17) is fixedly mounted on one side of the two connecting plates (16) away from each other.

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