Purification Method and Purification Device for Aluminum Slag in Mixing Furnace

Abstract

The present invention relates to the technical field of aluminum slag purification, specifically to a purification method and a purification device for aluminum slag in a mixing furnace. On the one hand, the present application provides a purification method for aluminum slag in a mixing furnace. On the other hand, the present application provides a purification device for aluminum slag in a mixing furnace, which includes a housing and a stirring assembly. The stirring assembly is installed inside the housing. The housing includes a direct current part and a conical part. The conical part has a wide mouth end and a narrow mouth end. The flared end of the conical part is connected to the direct current part. It further includes a filter element. The filter element is arranged at the narrow mouth end of the conical part and closes it. The filter element is a metal with a melting point greater than 1000 °C, and the filter element is a hollow sphere. The present invention sets a filter element at the narrow mouth end of the conical part. Based on a sufficient amount of molten aluminum, only the high-purity molten aluminum at the bottom is collected, forming a primary filtration of the molten aluminum, further reducing the impurity content in the molten aluminum, and ensuring the purity of the subsequent solidified aluminum ingot.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum slag purification, and specifically to a method and device for purifying aluminum slag in a mixing furnace. Background Art

[0002] Aluminum slag is generated in all processes where aluminum is melted. In order to further utilize aluminum slag, generally, the mixing furnace is used to stir-fry the ash to extract the elemental aluminum therein. The essence of stir-frying the ash is to utilize the characteristics that aluminum has a low melting point and high quality. During the stirring process, the aluminum liquid and impurities are separated. The aluminum liquid sinks and the impurities rise to form separation. However, the traditional mixing furnace outlet is not provided with a filtering mechanism, resulting in impurities being mixed into the aluminum liquid when it is discharged, which affects the purity of the solidified aluminum ingot. Summary of the Invention

[0003] In view of the problem that impurities are easily mixed into the aluminum liquid when the existing mixing furnace discharges aluminum liquid, the present invention provides a method and device for purifying aluminum slag in a mixing furnace. The specific technical solutions are as follows:

[0004] On the one hand, the present application provides a method for purifying aluminum slag in a mixing furnace, including the following steps:

[0005] Step 1: Add aluminum slag to the shell. When the furnace gas is heated to 800 °C, stir for 20 minutes.

[0006] Step 2: Let the aluminum slag simmer and heat up. When the furnace slag is also heated to 800 °C, stir again to separate the aluminum slag.

[0007] On the other hand, the present application provides a device for purifying aluminum slag in a mixing furnace, including a shell and a stirring component. The stirring component is installed inside the shell. The shell includes a straight part and a conical part. The conical part has a wide mouth end and a narrow mouth end. The flared end of the conical part is connected to the straight part. It further includes a filtering member. The filtering member is arranged at the narrow mouth end of the conical part and closes it. The filtering member is a metal with a melting point greater than 1000 °C, and the filtering member is a hollow sphere.

[0008] Through the above technical solution, a filtering member is arranged at the narrow mouth end of the conical part. Based on a sufficient amount of aluminum liquid, only the high-purity aluminum liquid at the bottom is collected, forming a primary filtration of the aluminum liquid, further reducing the impurity content in the aluminum liquid, and ensuring the purity of the subsequent solidified aluminum ingot.

[0009] The narrow mouth end of the conical part is connected to a liquid storage pipe. The end of the liquid storage pipe away from the conical part is provided with a liquid outlet. A sealing plate is covered above the liquid outlet. A chain is connected between the sealing plate and the filtering member. The chain is made of the same material as the filtering member.

[0010] Through the above technical scheme, on the basis of the primary filtration of the aluminum liquid, the filtered aluminum liquid is subjected to secondary filtration, which further improves the purity of the aluminum liquid. At the same time, different from the traditional method, the filter element will close the connection between the tapered part and the liquid storage tube when the liquid is discharged from the liquid outlet, so as to prevent the low-purity aluminum liquid from being discharged.

[0011] One end of the sealing plate is connected to an insertion rod, the insertion rod passes through a liquid storage tube, an outer wall of the liquid storage tube is connected to a sleeve, the sleeve is sleeved on the outside of the insertion rod, and one end of the insertion rod away from the sealing plate is connected to a piston plate, and the piston plate is slidably connected to the sleeve.

[0012] Through the above technical solution, the moving trajectory of the sealing plate is limited, ensuring that the sealing plate can seal the liquid outlet again after being reset.

[0013] A spring is wound around the outer wall of the insertion rod, one end of the spring is connected to the piston plate, and the other end of the spring is connected to the outer wall of the liquid storage tube.

[0014] Through the above technical solution, a continuous downward force can be applied to the sealing plate to prevent the sealing plate from being affected by the aluminum liquid and unable to be reset.

[0015] A damping hole is provided in the piston plate, and petroleum is filled in the sleeve.

[0016] Through the above technical solution, on the basis of the sealing plate being affected by the continuous downward force, the resetting speed of the sealing plate is slowed down to ensure that the liquid outlet can discharge a sufficient amount of aluminum liquid at one time to meet the conditions for forming aluminum ingots. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front cross-sectional structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the front cross-sectional structure of the liquid storage tube of the present invention;

[0019] Figure 3 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0020] Description of the drawings: 100, shell; 110, direct current part; 120, conical part; 130, liquid storage tube; 131, liquid outlet; 200, stirring assembly; 310, filter element; 320, chain; 330, sealing plate; 340, plug rod; 350, sleeve; 360, piston plate; 370, spring; 380, damping hole. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0022] Purification method of aluminum slag in a mixing furnace, comprising the following steps:

[0023] Step 1: Add aluminum slag to the housing 100. When the furnace gas temperature rises to 800 °C, stir for 20 minutes;

[0024] Step 2: Let the aluminum slag smolder and heat up. When the furnace slag also rises to 800 °C, stir again to separate the aluminum slag.

[0025] Figure 1 The figure shows a front sectional structural schematic diagram of this embodiment; Figure 2 The figure shows a front sectional structural schematic diagram at the liquid storage pipe of this embodiment; Figure 3 For this embodiment Figure 2 The enlarged structural schematic diagram at position A; Figure 1 、 Figure 2 and Figure 3 In, the purification device for aluminum slag in the mixing furnace includes a housing 100 and a stirring assembly 200. The stirring assembly 200 is installed inside the housing 100. The housing 100 includes a straight-flow part 110 and a conical part 120. The conical part 120 has a wide-mouth end and a narrow-mouth end. The flared end of the conical part 120 is connected to the straight-flow part 110. It also includes a filter element 310. The filter element 310 is arranged at the narrow-mouth end of the conical part 120 and closes it. The filter element 310 is a metal with a melting point greater than 1000 °C. The filter element 310 is a hollow sphere.

[0026] It should be noted that the filter element 310 can be tungsten, molybdenum, tantalum, niobium, vanadium, chromium, titanium, zirconium, etc.

[0027] In specific use, start the stirring assembly 200 to stir and separate the aluminum slag in the housing 100. Since when the aluminum slag is separated, the weight of the aluminum liquid is high and the weight of the impurities is low, therefore, the aluminum liquid sinks and the impurities rise. And as the liquid level of the aluminum liquid gradually rises, the impurity content gradually increases;

[0028] Based on this, the aluminum liquid slides downward along the trajectory of the conical part 120 and wraps around the outside of the filter element 310. As time accumulates, the liquid level gradually rises, and the buoyancy of the aluminum liquid on the filter element 310 gradually increases until the filter element 310 rises. At this time, there is a gap between the filter element 310 and the narrow-mouth end of the conical part 120. The high-purity aluminum liquid at the bottom flows out along the gap. As the aluminum liquid flows out, the liquid level drops, and the buoyancy of the aluminum liquid on the filter element 310 gradually decreases. The filter element 310 fits again with the inner wall of the conical part 120, forming a closure of the narrow-mouth end of the conical part 120. In this way, high-purity aluminum liquid is extracted to form a primary filtration.

[0029] The narrow end of the conical portion 120 is connected to a liquid storage tube 130 , and an end of the liquid storage tube 130 away from the conical portion 120 is provided with a liquid outlet 131 , a sealing plate 330 is covered above the liquid outlet 131 , and a chain 320 is connected between the sealing plate 330 and the filter element 310 , and the chain 320 and the filter element 310 are made of the same material.

[0030] In specific use, the aluminum liquid flowing out of the narrow end of the tapered portion 120 enters the liquid storage tube 130. As time accumulates, the liquid storage tube 130 is filled with aluminum liquid, which lifts up the filter element 310. As the aluminum liquid gradually accumulates, the filter element 310 continues to rise, and the chain 320 is straightened to lift the sealing plate 330. As the sealing plate 330 rises, the liquid outlet 131 is unblocked. On the basis of the primary filtration, the aluminum liquid at the bottom layer of the liquid storage tube 130 is discharged from the liquid outlet 131 again, forming a secondary filtration.

[0031] At the same time, when the aluminum liquid is discharged from the liquid outlet 131, the liquid level drops, the filter element 310 fits against the inner wall of the conical portion 120, and the connection between the conical portion 120 and the liquid storage tube 130 is closed, so as to prevent the aluminum liquid that has not been purified in the conical portion 120 from being discharged with the suction of the liquid outlet 131, thereby ensuring the purification effect.

[0032] One end of the sealing plate 330 is connected to an insertion rod 340, which passes through the liquid storage tube 130. The outer wall of the liquid storage tube 130 is connected to a sleeve 350, which is sleeved on the outside of the insertion rod 340. The end of the insertion rod 340 away from the sealing plate 330 is connected to a piston plate 360, and the piston plate 360 ​​is slidably connected to the sleeve 350.

[0033] In actual use, the sealing plate 330 is lifted up by the pulling of the filter element 310 , driving the insertion rod 340 and the piston plate 360 ​​to slide along the trajectory of the sleeve 350 to ensure the stability of the trajectory of the sealing plate 330 when it falls, and to ensure that the sealing plate 330 can form a closure for the liquid outlet 131 .

[0034] A spring 370 is wound around the outer wall of the insertion rod 340 , one end of the spring 370 is connected to the piston plate 360 ​​, and the other end of the spring 370 is connected to the outer wall of the liquid storage tube 130 .

[0035] During specific use, as the piston plate 360 ​​slides along the trajectory of the sleeve 350 toward the sealing plate 330, the spring 370 is squeezed by the piston plate 360 ​​and deformed. When the pulling force of the filter element 310 on the sealing plate 330 disappears, the elastic force of the spring 370 drives the sealing plate 330 and the piston plate 360 ​​to reset, ensuring that the sealing plate 330 is not affected by buoyancy to form a seal on the liquid outlet 131.

[0036] A damping hole 380 is formed in the piston plate 360 ​​, and the sleeve 350 is filled with petroleum.

[0037] In specific use, affected by the elastic force of the spring 370, the piston plate 360 is subjected to a continuously downward force. During the reset process of the piston plate 360, the oil flows through the damping hole 380 to slow down the piston plate 360, so that the sealing plate 330 slowly descends, ensuring that enough molten aluminum can be discharged from the liquid outlet 131 to achieve the purpose of forming aluminum ingots.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting it.

Claims

1. Aluminum slag purification device in mixing furnace, It is characterized in that The invention comprises a housing (100) and a stirring assembly (200), wherein the stirring assembly (200) is installed inside the housing (100), and the housing (100) comprises a direct current portion (110) and a conical portion (120), wherein the conical portion (120) has a wide end and a narrow end, and the wide end of the conical portion (120) is connected to the direct current portion (110); It also includes a filter element (310), the filter element (310) is arranged at the narrow end of the conical portion (120) and seals it, the filter element (310) is a metal with a melting point greater than 1000° C., and the filter element (310) is a hollow sphere; The narrow end of the conical portion (120) is connected to a liquid storage tube (130), an end of the liquid storage tube (130) away from the conical portion (120) is provided with a liquid outlet (131), a sealing plate (330) is covered above the liquid outlet (131), a chain (320) is connected between the sealing plate (330) and the filter element (310), and the chain (320) and the filter element (310) are made of the same material; One end of the sealing plate (330) is connected to an insertion rod (340), and the insertion rod (340) passes through the liquid storage tube (130). The outer wall of the liquid storage tube (130) is connected to a sleeve (350), and the sleeve (350) is sleeved on the outside of the insertion rod (340). The end of the insertion rod (340) facing away from the sealing plate (330) is connected to a piston plate (360), and the piston plate (360) is slidably connected to the sleeve (350).

2. The device for purifying aluminum slag in a mixing furnace according to claim 1, Features: A spring (370) is wound around the outer wall of the insertion rod (340), one end of the spring (370) is connected to the piston plate (360), and the other end of the spring (370) is connected to the outer wall of the liquid storage tube (130).

3. The device for purifying aluminum slag in a mixing furnace according to claim 1, Features: The piston plate (360) is provided with a damping hole (380), and the sleeve (350) is filled with petroleum.

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