Molten aluminum self-overflow chute for aluminum alloy production

Abstract

The utility model discloses a molten aluminum self-overflow chute for aluminum alloy production, which is based on safety production and quality control. According to the technical scheme, the self-constriction device is developed through the specially-made chute and the specially-made discharge port by utilizing the flowing characteristic of liquid, when the liquid level in the chute reaches a certain height, the higher part flows into the slag box through the self-constriction discharge port, the defect that the use is affected by the plate surface due to the too high liquid level or shutdown caused by aluminum leakage of a casting nozzle is avoided, and safe and stable production is ensured. According to the device, the defect that the use of products is affected due to the rising of the liquid level of the chute during furnace guiding is completely eradicated, the qualified rate of the products is improved, the waste shearing amount is reduced, and the production cost is saved; and potential safety hazards are greatly reduced, and meanwhile smooth production is ensured. The device can completely eradicate the risk of aluminum leakage shutdown and safety accidents caused by overhigh liquid level of the chute. After the device is used, almost no safety accidents such as shutdown and aluminum leakage of the casting nozzle caused by rising of the liquid level of the guide furnace occur.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum material production equipment, in particular to a self-overflowing chute for aluminum liquid in aluminum alloy production. Background Art

[0002] In normal smelting and casting production, in order to maintain the continuity of production, it is necessary to introduce the aluminum liquid that meets the production requirements from the smelting furnace into the holding furnace. During the furnace induction process, the aluminum liquid in the holding furnace increases with the introduced aluminum liquid, and the aluminum liquid in the entire chute system fluctuates.

[0003] During the converter process, the aluminum liquid height of the holding furnace changes, causing the liquid level and flow rate in the flow channel between the holding furnace and the front box to change. This causes the online coil width to increase, resulting in black spots, black lines, oxide films and other defects that affect the use of the product. In severe cases, aluminum leaks from the casting nozzle, causing shutdowns, aluminum leaks or major production safety accidents.

[0004] The existing tilting holding furnace is that after the chute liquid level automatic control system feeds back the model to the hydraulic system, the holding furnace hydraulic system automatically rises and falls according to the feedback information. Since the lifting speed is relatively slow, employees manually control the lifting speed of the holding furnace in order to adjust the abnormal flow and liquid level in time to prevent accidents. For enterprises with many furnace groups, it may be difficult to control multiple furnace groups at the same time. Utility Model Content

[0005] The utility model aims to provide a self-overflowing chute for molten aluminum in aluminum alloy production, which solves the problem of how to keep the liquid level in the slag box stable and not fluctuating when the liquid level in the chute fluctuates and the excess aluminum liquid is self-suspended into the slag box through the structure when the liquid level in the chute fluctuates when the aluminum liquid is introduced from the smelting furnace into the holding furnace.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model provides a self-overflowing chute for aluminum liquid in aluminum alloy production, comprising a "cross" shaped chute for guiding aluminum liquid from a smelting furnace into a holding furnace;

[0008] The "cross" shaped chute includes an X-direction chute and two Y-direction overflow troughs vertically connected to the X-direction chute;

[0009] The "cross" shaped chute is located below the degassing furnace; a discharge port is provided at the end of the Y-direction overflow trough, and a high temperature resistant gate is provided in the Y-direction overflow trough and in front of the discharge port.

[0010] Furthermore, the material of the high temperature resistant gate plate includes silicate fiber wool.

[0011] Furthermore, the blocking height of the high temperature resistant gate plate is lower than the overall chute height and is equal to the liquid level height setting value of the insulation furnace.

[0012] Furthermore, a slag box is arranged below the self-hanging flow outlet of the discharge outlet.

[0013] Compared with the prior art, the beneficial technical effects of the utility model are:

[0014] 1. This device completely eliminates the defects that affect the use of products due to the increase of chute liquid level during furnace induction, improves the qualified rate of products, reduces the amount of shear waste, and saves production costs; it greatly reduces safety hazards and ensures the smooth progress of production.

[0015] 2. This device can completely eliminate the risk of aluminum leakage and shutdown and safety accidents caused by excessively high liquid level in the chute.

[0016] 3. After using this device, our company has not had any major or minor safety incidents such as shutdown caused by increased furnace liquid level and aluminum leakage from the casting nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 This is a top view structural diagram of a "cross" chute of a self-overflowing chute for aluminum alloy production of the utility model;

[0019] Figure 2 It is a schematic diagram of the installation cross section of the "cross" chute of the aluminum alloy production aluminum liquid self-overflow chute of the utility model;

[0020] Figure 3 for Figure 1 Schematic diagram of the cross section at AA;

[0021] Figure 4 for Figure 1 Schematic diagram of the cross section at BB;

[0022] Figure 5 This is a schematic diagram of the installation position of the high temperature resistant gate.

[0023] Explanation of reference numerals: 1. X-direction chute; 2. Y-direction overflow chute. DETAILED DESCRIPTION

[0024] This embodiment discloses a self-overflowing chute for aluminum liquid in aluminum alloy production, including a "cross" shaped chute for guiding aluminum liquid from a smelting furnace into a holding furnace;

[0025] The "cross" shaped chute includes an X-direction chute 1 and two Y-direction overflow troughs 2 vertically connected to the X-direction chute 1;

[0026] The "cross" shaped chute is located below the degassing furnace; a discharge port is provided at the end of the Y-direction overflow trough 2, and a high temperature resistant gate is installed in the Y-direction overflow trough 2 and in front of the discharge port;

[0027] In the prior art, the entire overflow port is blocked layer by layer with high temperature resistant aluminum silicate fiber wool. Due to the wide blocking width, the overflow effect is not obvious. In this embodiment, a high temperature resistant aluminum silicate fiber board is combined with aluminum silicate fiber wool for blocking, wherein a groove flows out from the middle of the high temperature resistant fiber board to facilitate the overflow of aluminum water; its installation position is as follows: Figure 5 shown.

[0028] The materials of the high temperature resistant gate plate include silicate fiber wool, high temperature resistant ceramics, and other high temperature resistant materials.

[0029] In this embodiment, the blocking height of the high temperature resistant gate is lower than the overall chute height and is equal to the liquid level setting value of the insulation furnace. A slag box is installed below the self-hanging flow outlet of the discharge port to recover the slag.

[0030] This device can also be installed in any furnace group for molten aluminum smelting, especially for aluminum processing enterprises with multiple production lines, which can greatly reduce the occurrence of safety incidents. At the same time, it can also reduce the production cost of shutdown and aluminum leakage caused by increased liquid level; this device can also be used in other metal smelting furnace groups similar to aluminum smelting.

[0031] In this embodiment, a group of special chutes in the shape of a cross are custom made, such as Figure 1 ; It is installed at the inlet and outlet of the degassing furnace; Figure 2 , the discharge port is divided and welded on the supporting shell at the overflow port of the corresponding chute. Before the vertical plate is discharged, it is blocked with silicate fiber cotton or other high-temperature resistant gates. The blocking height cannot be higher than the overall chute height and should be equal to the setting value of the holding furnace liquid level height. In normal and stable production, a thick oxide film will form at the self-hanging flow port, which will hinder the overflow of molten aluminum. When encountering a guide furnace or the liquid level rises, the molten aluminum will break through the oxide film at the overflow port, allowing the excess molten aluminum to flow from the self-hanging flow port into the slag box below. The operator can handle it according to the production situation.

[0032] The above embodiments are only descriptions of the preferred methods of the invention of the utility model, and are not intended to limit the scope of the utility model. Without departing from the design spirit of the utility model, various modifications and improvements made to the technical solution of the utility model by ordinary technicians in this field should fall within the protection scope determined by the claims of the utility model.

Claims

1. A self-overflowing chute for aluminum liquid in aluminum alloy production, characterized by: It includes a "cross" shaped chute for introducing molten aluminum from the smelting furnace into the holding furnace; The "cross" shaped chute comprises an X-direction chute (1) and two Y-direction overflow troughs (2) vertically connected to the X-direction chute (1); The "cross" shaped chute is located below the degassing furnace; a discharge port is provided at the end of the Y-direction overflow trough (2); and a high temperature resistant gate is provided in the Y-direction overflow trough (2) and in front of the discharge port.

2. The aluminum alloy production aluminum liquid self-overflow chute according to claim 1, characterized in that: The material of the high temperature resistant gate plate includes silicate fiber wool.

3. The aluminum alloy production aluminum liquid self-overflow chute according to claim 2, characterized in that: The blocking height of the high temperature resistant gate is lower than the overall chute height and is equal to the liquid level height setting value of the insulation furnace.

4. The aluminum alloy production aluminum liquid self-overflow chute according to claim 1, characterized in that: A slag box is arranged below the self-hanging flow outlet of the discharge outlet.

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