CN204309006U - A kind of pre-baked anode carbon block for aluminium bottom slot machine - Google Patents

Abstract

The utility model provides a slotting machine for the bottom of a prebaked anode carbon block for aluminum, comprising a feeding platform (1), a hydraulic push rod (2), a driving trolley (3), a guide rail (4), and a slotting host (5) ), block conveying roller (6), dust removal system (7) and manual automatic control system (8). The slotting machine for the bottom of the prebaked anode carbon block for aluminum can cut straight grooves, inclined grooves and arc grooves at the bottom of the carbon block by adjusting the height and inclination of the trolley according to the requirements of the carbon block products that need to be slotted. . The groove depth and spacing are adjustable, and the groove feed speed is adjustable. It can adapt to the slotting work of carbon blocks of different specifications, and has a high degree of electronic control, which can realize automatic upper computer operation.

Description

A slotting machine for the bottom of prebaked anode carbon block for aluminum

technical field

The utility model relates to a slotting machine for the bottom of a prebaked anode carbon block for aluminum, which is a novel, energy-saving and high-efficiency slotting device for the bottom of an anode carbon block, and belongs to the technical field of prebaked anode carbon block structure and shape processing.

Background technique

In the industrial production of aluminum electrolysis, the cryolite-alumina dissolved salt electrolysis method is widely used at present. In the production process of this electrolysis method, how to reduce power consumption and anode consumption has always been the two main issues people explore. The anode is the core of the electrolytic cell. The CO ₂ and CO and other volatiles produced by the electrolytic reaction are easy to form bubbles at the bottom of the anode. Some of the volatiles in the form of bubbles can escape along the four sides of the anode, and the rest It will gradually gather at the bottom of the anode to form a kind of gas film, which will affect the conductivity of the anode and increase the resistance of the electrolytic cell, thus increasing the power consumption of electrolysis; in addition, the electrolytic cell will sometimes cause fluctuations and Anode cracking and excessive consumption, in summary, technical innovation must be carried out on prebaked anodes.

The anode grooving technology is to open two grooves at the bottom of the anode for the discharge of the anode gas, which can improve the operation status of the electrolytic channel steel and improve the operation index.

Combined with production practice, slotted anodes have some advantages, as follows:

1) Reduce the overvoltage of the anode and save electric energy: Since the gas at the bottom of the anode is discharged smoothly, the overvoltage of the anode can be reduced, thereby saving electric energy;

2) It can reduce the actual current density of the pole and reduce the occurrence of anode effect: since a large part of the bottom of the anode is covered by gas, the actual current at the bottom of the anode is greater than the current density on the surface of the anode. After the anode is slotted, the gas can be discharged smoothly , can increase the contact area between the electrolyte and the anode, reduce the current density of the actual anode, and reduce the occurrence of the anode effect;

3) Improving the electrocutin flow field is beneficial to the formation of the furnace side: after the anode is slotted, the flow of the anode gas at the bottom of the electrolytic cell is directional, and the flow direction is the middle seam of the anode. Since the bottom of the anode is the area with the highest temperature in the electrolytic cell, Most of the heat is generated here, so these high-temperature and high-heat electrolytes flow to the middle seam of the electrolytic cell, which can improve the thermal balance state of the edge of the electrolytic cell and facilitate the formation of crusts on the edge;

4) Improve the dissolution of alumina and reduce precipitation: After the anode is slotted, the high-temperature and high-heat electrolyte flows to the middle of the electrolytic cell to increase the dissolution rate of alumina. In addition, since most of the anode gas is discharged from the middle slot. The rising airflow meets the sinking alumina, which supports the sinking alumina and reduces the precipitation of alumina;

5) It can reduce the occurrence of secondary reactions and improve the current efficiency: the anode gas is smoothly discharged from the groove, which can reduce the gas content of the electrolyte at the bottom of the anode and slow down the turbulence of the electrolyte, thereby reducing the oxidation of aluminum by CO ₂ gas The occurrence of the secondary reaction improves the current efficiency;

6) Improving the heat dissipation at the bottom of the anode is beneficial to the heat balance of the electrolytic cell: Since the high-temperature electrolyte at the bottom of the anode is discharged from the middle slit, the heat dissipation at the bottom of the anode is accelerated, making the heat balance of the electrolytic cell more stable.

There are two main methods of anode slotting commonly used at present, one is mold forming slotting, and the other is slotting machine slotting. Mold slotting is to add a mold to the bottom of the anode during the forming process of the anode, so that the bottom of the formed anode has grooves, and then the anode is baked. The slotting machine slotting is to cut the normally roasted anode on the slotting machine to open two grooves. The advantage of mold forming slotting is that the slotting is convenient and simple, and the slotting is completed during the molding process, without adding redundant processes and less investment. The disadvantages are mainly manifested in two aspects: one is that the slotted anode is not easy to guarantee, and it is easy to cause anode cracking and falling off during use; the other is that the anode groove is easily blocked by carbon filler during the anode roasting process. Difficult to clean up. If the groove is deformed or blocked, it will not function as it should in use.

The anode is grooved during the molding process, and stress is likely to be generated at the bottom of the groove, and cracks are likely to occur in the places where these stresses are concentrated during the firing process. Grooving the anode before the anode is baked is equal to adding two defects on the anode green body, which will have some impact on the anode's firing quality. At present, the anode forming and slotting process has been eliminated in anode manufacturers.

The advantage of slotting by the slotting machine is that it can reduce the influence of the quality of the slotted steel anode. The slotted anode is not easy to crack or fall off during use, and the size of the slot can be adjusted at will.

The slotting machine slotting is driven by the motor to drive the saw blade to run at high speed to cut the bottom of the anode carbon block to open two grooves. During the cutting process, due to the friction between the high-speed operation of the saw blade and the carbon body, the saw blade is prone to heat and redness, resulting in deformation, unusable or irregular grooves. In order to make the saw blade not generate heat during the cutting process, the current slotting machine sprays water on the saw blade to cool the saw blade during cutting. In this way, the dust generated during the cutting process is mixed with water and cannot be directly recycled. It needs to go through processes such as filtration, extrusion, drying, and crushing before it can be recycled to the production line for use, which not only increases production costs, but also increases environmental pollution.

Contents of the invention

The purpose of the utility model is to solve the problems that the existing aluminum anode carbon block bottom slotting machine uses water spray to cool the saw blade during the slotting process, resulting in difficult recovery of dust, increased production costs and environmental pollution, etc., to provide a non-toxic It is a multifunctional anode carbon block slotting machine that needs water spray cooling and can adapt to different specifications and slot types.

The slotting machine for the bottom of the prebaked anode carbon block for aluminum of the utility model includes a feeding platform (1), a hydraulic push rod (2), a driving trolley (3), a guide rail (4), a slotting main machine (5), an outlet Block conveying roller (6), dust removal system (7) and manual automatic control system (8),

The feeding platform (1) includes a frame (1-1) and a driving roller (1-2) arranged on the frame (1-1). It can be adjusted according to the size of the carbon block to be slotted, and can hold 1-7 blocks at a time;

The hydraulic push rod (2) includes a hydraulic station (2-1), a hydraulic rod (2-2) inside the hydraulic push rod (2), and a forward limiter connected with the hydraulic rod (2-2) (2-3) and back stopper (2-4). The forward limiter (2-3) is used to adjust the center position of the carbon block; the backward limiter (2-4) is used to adjust the backward limit of the hydraulic rod;

The driving trolley (3) includes a feed frame (3-1), a driver (3-2), a driving wheel (3-3), a lifting adjustment device (3-4) and a bracket (3-5). The feed frame (3-1), driver (3-2), drive wheel (3-3) and lifting adjustment device (3-4) are all set on the support (3-5), and the feed The inner end surface of the material frame (3-1) is provided with a spring clamping device (3-1a).

The driving trolley drives the driving wheel (3-3) to rotate through the driver (3-2), and pushes the driving trolley to move forward and backward along the guide rail (4). The feeding frame (3-1) is used to install the carbon block, and the inner end surface is equipped with a spring clamping device (3-1a), which will be automatically clamped after the carbon block of any specification is put into the frame to prevent the carbon block from cutting swing in the process. The lifting adjustment device (3-4) is used to adjust the height and inclination of the driving trolley (straight slots, inclined slots, and arc slots can be opened); the drive (3-2) is controlled by frequency conversion, and the speed of advancing and retreating is adjustable. work efficiency;

The guide rail (4) is used to guide the driving trolley to keep it on the same parallel line when moving forward and backward, so as to ensure that the grooves opened are regular.

The slotting host (5) includes a motor (5-1), a reduction box (5-2) connected to the motor (5-1), a saw blade (5-3) connected to the reduction box (5-2) ). The slotting host (5) is powered by the motor to drive the transmission and the saw blade to cut the carbon block. The slotting host can be manually installed and adjusted horizontally and vertically, and the slot depth and slot spacing can be adjusted according to the slotting size of the carbon block. There are two saw blades installed on the host machine, each saw blade is driven by a 22KW motor and a reducer, and the speed of the saw blade can be adjusted through a frequency converter.

The block conveying roller (6) is used to transport the slotted carbon block to the designated position or finished product warehouse.

The dust removal system (7) is a bag filter, which mainly collects the dust generated during the cutting process uniformly and returns it for use.

After the carbon block is installed, the manual and automatic control system can realize fully automatic control only by pressing a start button, and can also be converted to manual control during maintenance.

The hydraulic push rod (2), the driving trolley (3) and the slotting host (5) are all connected to the feeding platform (1), and the driving trolley (3) is connected to the guide rail (4), the slotting host ( 5) are connected, the transmission roller (1-2) and the block conveying roller (6) are connected with the feeding frame (3-1).

The multifunctional slotting machine of the utility model is a special equipment for cutting slots at the bottom of prebaked anode carbon blocks. According to the requirements of slotted carbon block products, it can cut straight slots at the bottom of the carbon block by adjusting the height and inclination of the trolley. Chute, arc groove. The groove depth and spacing are adjustable, and the groove feed speed is adjustable. It can adapt to the slotting work of carbon blocks of different specifications, and has a high degree of electronic control, which can realize automatic upper computer operation. The specific technical effects are as follows:

1. The existing slotting machine uses power rollers to transport carbon blocks, and the carbon blocks can only move forward during the cutting process, so chute or arc grooves cannot be opened. After using the equipment of the utility model, it has been realized that various groove types can be opened, which reduces the investment of equipment;

2. The saw blade used by the existing slotting machine is a common saw blade with a diameter of 700mm, and the maximum number of slots for each pair of saw blades is 2,500 tons. Calculated at 3,400 yuan/payment, the cost of each ton of product saw blades is 1.36 yuan and the saw blade of the equipment of the present utility model has a slotting capacity of more than 8000 tons, and the cost of each cutter head is 1200 yuan (the saw blade can be reused). The saw blade cost per ton of product is 0.15 yuan; Can save 1.21 yuan;

3. The existing slotting machine is cooled by water, and the water is about 0.3m ³ per ton of product. According to the current water fee of 1.7 yuan/m ³ , the water fee per ton of product is 0.51 yuan. After using the equipment of the utility model, no water cooling is required, and the product cost per ton is reduced by 0.51 yuan/ton;

4. The existing slotting machine adopts water cooling, and the dust generated in the production process needs investment in equipment such as filtering, drying, and crushing. The investment of these equipments is 600,000 yuan/set; after using the equipment of the utility model, the Invest and save.

5. The dust produced by water cooling in the prior art needs to be filtered, dried, and crushed before it can be returned to use, and the required labor cost is 100 yuan/ton; after using the equipment of the utility model, these costs will not be generated.

6. The discharge of waste water produced in the process of dust filtration will cause secondary pollution to the environment, while the dust produced in the production process of the equipment of the utility model is collected by a bag filter, and the dust concentration of the exhaust gas at the outlet: <50mg/Nm ^3. Meet the requirements of national emission standards.

7. When slotting with water, there are 3 workers per shift, while the current utility equipment of the present invention has 1 worker per shift, which can reduce both labor costs and labor intensity.

In summary, it can be calculated that the processing cost per ton of products can be reduced by about 110 yuan/ton by using the equipment of the utility model. In 2013, the output of electrolytic aluminum in my country was 22 million tons, and the consumption of anode carbon blocks per ton of electrolytic aluminum was about 450 kg. In 2013, the consumption of prebaked anode carbon blocks was about 10 million tons. According to this calculation, the contribution of the equipment of the present utility model to the industry no matter it is social and economic efficiency every year is huge.

Description of drawings

Fig. 1 is the front view of the utility model;

Fig. 2 is the top view of the utility model;

Fig. 3 is a slotting shape diagram of the slotting machine of the present invention.

Among them, 1 is the feeding platform, 2 is the hydraulic push rod, 3 is the driving trolley, 4 is the guide rail, 5 is the slotting host, 6 is the block conveying roller, 7 is the dust removal system, 8 is the manual automatic control system, 1 -1 is the frame, 1-2 is the transmission roller, 2-1 is the hydraulic station, 2-2 is the hydraulic rod, 2-3 is the forward limiter, 2-4 is the backward limiter, 3-1 is Feeding frame, 3-1a is a spring clamping device, 3-2 is a driver, 3-3 is a driving wheel, 3-4 is a lifting adjustment device, 3-5 is a bracket, 5-1 is a motor, 5-2 is Speed changer, 5-3 is saw blade.

Detailed ways

As shown in Figures 1 and 2, the slotting machine for the bottom of the aluminum prebaked anode carbon block of the present utility model includes a feeding platform (1), a hydraulic push rod (2), a driving trolley (3), a guide rail (4), Grooving host (5), block conveying roller (6), dust removal system (7) and manual automatic control system (8),

The feeding platform (1) includes a frame (1-1) and a driving roller (1-2) arranged on the frame (1-1). It can be adjusted according to the size of the carbon block to be slotted, and can hold 1-7 blocks at a time;

The hydraulic push rod (2) includes a hydraulic station (2-1), a hydraulic rod (2-2) inside the hydraulic push rod (2), and a forward limiter connected with the hydraulic rod (2-2) (2-3) and back stopper (2-4). The forward limiter (2-3) is used to adjust the center position of the carbon block; the backward limiter (2-4) is used to adjust the backward limit of the hydraulic rod;

The driving trolley (3) includes a feed frame (3-1), a driver (3-2), a driving wheel (3-3), a lifting adjustment device (3-4) and a bracket (3-5). The feed frame (3-1), driver (3-2), drive wheel (3-3) and lifting adjustment device (3-4) are all set on the support (3-5), and the feed The inner end surface of the material frame (3-1) is provided with a spring clamping device (3-1a).

The driving trolley drives the driving wheel (3-3) to rotate through the driver (3-2), and pushes the driving trolley to move forward and backward along the guide rail (4). The feeding frame (3-1) is used to install the carbon block, and the inner end surface is equipped with a spring clamping device (3-1a), which will be automatically clamped after the carbon block of any specification is put into the frame to prevent the carbon block from cutting swing in the process. The lifting adjustment device (3-4) is used to adjust the height and inclination of the driving trolley (straight slots, inclined slots, and arc slots can be opened); the drive (3-2) is controlled by frequency conversion, and the speed of advancing and retreating is adjustable. work efficiency;

The guide rail (4) is used to guide the driving trolley to keep it on the same parallel line when moving forward and backward, so as to ensure that the grooves opened are regular.

The slotting host (5) includes a motor (5-1), a reduction box (5-2) connected to the motor (5-1), a saw blade (5-3) connected to the reduction box (5-2) ). The slotting main engine (5) is powered by the motor to drive the transmission and the saw blade to cut the carbon block. The slotting host can be manually installed and adjusted horizontally and vertically, and the slot depth and slot spacing can be adjusted according to the slotting size of the carbon block. There are two saw blades installed on the main machine, each saw blade is driven by a 22KW motor and a reducer, and the speed of the saw blade can be adjusted through a frequency converter.

The block conveying roller (6) is used to transport the slotted carbon block to the designated position or finished product warehouse.

The dust removal system (7) is a bag filter, which mainly collects the dust generated during the cutting process uniformly and returns it for use.

After the carbon block is installed, the manual and automatic control system can realize fully automatic control only by pressing a start button, and can also be converted to manual control during maintenance.

The hydraulic push rod (2), the driving trolley (3) and the slotting host (5) are all connected to the feeding platform (1), and the driving trolley (3) is connected to the guide rail (4), the slotting host ( 5) are connected, the transmission roller (1-2) and the block conveying roller (6) are connected with the feeding frame (3-1).

The working process of the equipment of the present utility model is as follows:

Adjust the height and spacing of the saw blades (5-3) of the slotting host (5) and adjust the height and inclination of the driving trolley (3) according to the size requirements of the slotting of the carbon block. The carbon block is hoisted to the position of the feeding platform (1) by the crane (single block or multiple blocks), and the hydraulic rod advance limiter (2-3) is set according to the size of the carbon block (the center line of the carbon block is aligned with the two centerline of the saw blade). The carbon block is pushed into the feed frame (3-1) of the driving trolley (3) by the hydraulic rod (2-2), and the carbon block is clamped by the end surface spring clamping device (3-1a). Start the working button, the driving trolley (3) is driven by the cycloidal pinwheel reducer as the driver (3-2) to rotate the sprocket as the driving wheel (3-3), and the driving trolley (3) advances along the guide rail with the carbon block . At the same time, the saw disc starts to rotate and cut. When the driving trolley (3) moves forward until it touches the set limit switch (that is, the length of the slotting of the carbon block is set, straight slots, inclined slots, and arc slots can be adjusted), the driving trolley (3) stops moving forward , the saw blade (5-3) stops working. At the same time, the driving trolley (3) automatically retreats to the initial position, when the driving trolley (3) retreats to the backward limiter (2-4). Push the hydraulic rod (2-2) through the command to push the carbon block installed on the feeding platform (1) into the feeding frame (3-1) of the driving trolley (3), and put the original carbon block in the feeding frame (3- 1) The carbon blocks that have been slotted are pushed onto the block delivery roller (6) to complete the entire slotting process.

The slotting machine for the bottom of the aluminum prebaked anode carbon block of this utility model can be used for slots of the shape shown in Figure 3, including straight slots, arc slots and inclined slots:

The slotting machine of the utility model can be adjusted within the following parameter range

●Saw blade diameter: Φ900 mm -Φ1600mm

●Cutting depth: 200-400mm (adjustable)

●Slot spacing: 200-400mm (adjustable)

●Slotting work feed speed: 0-800mm/min (adjustable)

●Work efficiency: 8-10 blocks/h

●Adopt alloy diamond cutter head for carbon material cutting, each pair of cutter head can slot 8

000 or more. After the cutter head is worn to a certain extent, a new cutter head can be re-welded, and the saw blade can be reused.

Claims (1)

1. pre-baked anode carbon block for aluminium bottom slot machine, it is characterized in that, comprise feeding platform (1), hydraulic push rod (2), driving dolly (3), guide rail (4), fluting main frame (5), go out block transport roller (6), dust pelletizing system (7) and hand automatic control system (8)

Described feeding platform (1) comprises frame (1-1) and is located at the Live roller (1-2) in frame (1-1);

Described hydraulic push rod (2) comprises Hydraulic Station (2-1), the hydraulic stem (2-2) be located in hydraulic push rod (2), the advance stop (2-3) be connected with hydraulic stem (2-2) and retreat stop (2-4);

Described driving dolly (3) comprises charging frame (3-1), driver (3-2), driving wheel (3-3), elevation and subsidence regulating device (3-4) and support (3-5);

Described charging frame (3-1), driver (3-2), driving wheel (3-3) and elevation and subsidence regulating device (3-4) are all located on support (3-5), and described charging frame (3-1) inner face is provided with fixture of the spring (3-1a);

Described fluting main frame (5) comprises motor (5-1), the reduction box (5-2) be connected with motor (1), the saw blade (5-3) that is connected with reduction box (5-2);

Described hydraulic push rod (2), driving dolly (3) and fluting main frame (5) are all connected with feeding platform (1), described driving dolly (3) is connected with guide rail (4), main frame (5) of slotting, and described Live roller (1-2) is all connected with charging frame (3-1) with transport roller (6).