A split-type heat-resistant air-cooled ingot mold

Abstract

This utility model relates to the field of ingot mold technology, specifically a split-type heat-resistant air-cooled ingot mold, including a frame, an insulation wall fixedly installed on the outer side of the frame, a centrifugal fan fixedly connected to the outer side of the frame, and an air supply duct fixedly connected to the outer side of the centrifugal fan, as well as a ferrosilicon mold structure. This ingot mold generates cooling airflow through the centrifugal fan, which is then transported through the air supply duct. The airflow enters the ferrosilicon mold structure through the air inlet pipe. The cooling airflow entering the air inlet pipe first flows into the air distribution groove at the bottom of the ferrosilicon mold frame. The air distribution groove evenly distributes the concentrated airflow into the air duct at the bottom of the ferrosilicon mold base plate. As the cooling airflow flows within the air duct, it comes into full contact with the ferrosilicon mold base plate and frame, which are heated after receiving molten iron, rapidly absorbing heat and achieving cooling. The high-temperature airflow, having completed heat exchange, is finally discharged from the ferrosilicon mold structure through the air outlet pipe, preventing the accumulation of high-temperature airflow inside and affecting the cooling effect.

Description

Technical Field

[0001] This utility model relates to the field of ingot mold technology, specifically a split-type heat-resistant air-cooled ingot mold. Background Technology

[0002] In the smelting and production of ferroalloys such as industrial silicon and ferrosilicon, ingot molds are the core equipment for receiving high-temperature molten iron (typically around 1500℃) and cooling it into shape. Their service life and cooling efficiency directly affect production continuity and cost control. Currently, most ferroalloy ingot molds widely used in the industry are integral or simple split structures, and they mainly rely on natural cooling methods for temperature reduction.

[0003] In existing technologies, ingot molds lack a forced cooling system, causing the mold body temperature to rise above 600℃ after molten iron is poured. Cooling through natural heat dissipation (radiation, natural convection) requires a long cooling cycle. Taking a 33000KVA submerged arc furnace production line as an example, with an iron tapping frequency of 3 hours per cycle and 8 sets of ingot molds used alternately per furnace, the mold body temperature before the next pour, even under natural cooling conditions, remains around 400℃. Prolonged exposure to high temperatures accelerates thermal fatigue damage to the mold material (mostly cast iron), leading to cracking and peeling of the mold base plate. The continuous service life is typically less than 3 months, requiring frequent mold replacements, which not only increases spare parts costs but also easily disrupts production due to the replacement process. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a split-type heat-resistant air-cooled ingot mold, which solves the problem of long cooling cycles in existing ingot molds.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a split-type heat-resistant air-cooled ingot mold, including a frame, an insulation wall fixedly installed on the outer side of the frame, a centrifugal fan fixedly connected to the outer side of the frame, and an air supply duct fixedly connected to the outer side of the centrifugal fan, and also including a silicon iron mold structure: the silicon iron mold structure is placed on the inner side of the frame, the bottom of the inner side of the frame is lined with a ceramic fiber blanket, and then an air-leakage-proof mold is placed on it. The mold is a steel mold shell used to support the silicon iron mold structure;

[0006] The silicon iron mold structure includes a silicon iron mold frame, a silicon iron mold base plate embedded at the bottom of the silicon iron mold frame, wedges that are engaged on both sides of the silicon iron mold frame through mounting slots, and the mounting slots are opened in the side walls of the silicon iron mold frame. An air inlet pipe is fixedly connected to one side of the silicon iron mold frame, and an air outlet pipe is fixedly connected to the other side of the silicon iron mold frame. The silicon iron mold base plate is embedded in the groove of the silicon iron mold frame, forming a snap-fit ​​connection. At this time, the air distribution groove is connected to the air duct, forming a complete airflow channel.

[0007] Preferably, the centrifugal fan is located on the side of the heat insulation wall away from the silicon iron mold structure. The heat insulation wall can block the high-temperature radiation generated by the silicon iron mold structure during operation, thus preventing the centrifugal fan from being damaged by high temperature.

[0008] Preferably, an air distribution groove is provided at the bottom of the silicon iron mold frame. The interior of the air distribution groove is connected to the side of the air inlet pipe and the air outlet pipe near the silicon iron mold frame, respectively. The air is collected through the air distribution groove and flows to the air outlet pipe on the other side of the silicon iron mold frame, and finally discharged from the silicon iron mold structure through the air outlet pipe, so as to avoid the accumulation of high temperature air inside and affect the cooling effect.

[0009] Preferably, the bottom of the silicon iron mold base plate is provided with an air duct, and the air duct is arranged linearly along the bottom of the silicon iron mold base plate. The interior of the air duct is connected to the interior of the air distribution groove, and the air distribution groove can evenly distribute the concentrated airflow into the air duct opened at the bottom of the silicon iron mold base plate.

[0010] Preferably, the end of the air supply duct away from the centrifugal fan is fixedly connected to the end of the air inlet duct away from the silicon iron mold frame. After the centrifugal fan is running, it generates cooling airflow, which is transported through the air supply duct and enters the interior of the silicon iron mold structure through the air inlet duct.

[0011] The beneficial effects of this utility model are as follows:

[0012] (I) This air-cooled ingot mold generates cooling airflow through a centrifugal fan and delivers it via an air supply duct. The airflow enters the interior of the ferrosilicon mold structure through the air inlet pipe. The cooling airflow entering the air inlet pipe first flows into the air distribution groove at the bottom of the ferrosilicon mold frame. The air distribution groove evenly distributes the concentrated airflow into the air duct at the bottom of the ferrosilicon mold base plate. When the cooling airflow flows in the air duct, it comes into full contact with the ferrosilicon mold base plate and ferrosilicon mold frame, which are heated after receiving the high-temperature molten iron, and quickly absorbs heat to achieve cooling. The high-temperature airflow that has completed heat exchange is collected through the air distribution groove to the air outlet pipe on the other side of the ferrosilicon mold frame, and finally discharged from the ferrosilicon mold structure through the air outlet pipe, avoiding the accumulation of high-temperature airflow inside and affecting the cooling effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the present invention;

[0015] Figure 3 This is a cross-sectional view of the silicon iron mold structure of this utility model;

[0016] Figure 4 This is a bottom view of the silicon iron mold structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the silicon iron mold structure of this utility model;

[0018] Figure 6 This is a schematic diagram of the silicon iron mold structure of this utility model from another perspective;

[0019] Figure 7 This is a schematic diagram of the structure of the silicon iron mold frame of this utility model.

[0020] In the diagram: 1. Chassis; 2. Insulation wall; 3. Centrifugal fan; 4. Air supply duct; 5. Silicon iron mold structure; 51. Silicon iron mold frame; 52. Silicon iron mold base plate; 53. Wedge block; 54. Air duct; 55. Air inlet pipe; 56. Air outlet pipe; 57. Air distribution groove; 58. Mounting groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Please refer to Figures 1-7 This utility model provides a technical solution: a split-type heat-resistant air-cooled ingot mold, including a frame 1, an insulation wall 2 fixedly installed on the outside of the frame 1, a centrifugal fan 3 fixedly connected to the outside of the frame 1, an air supply duct 4 fixedly connected to the outside of the centrifugal fan 3, and a silicon iron mold structure 5: the silicon iron mold structure 5 is placed inside the frame 1, a ceramic fiber blanket is laid at the bottom of the inside of the frame 1, and then an air-leakage-proof mold is placed on it. The mold is a steel mold shell used to support the silicon iron mold structure 5. The silicon iron mold structure 5 is placed in the air-leakage-proof mold inside the frame 1.

[0023] The ferrosilicon mold structure 5 includes a ferrosilicon mold frame 51, with a ferrosilicon mold base plate 52 embedded at the bottom of the frame 51. Wedges 53 are engaged on both sides of the frame 51 via mounting grooves 58, which are located in the side walls of the frame 51. An air inlet pipe 55 is fixedly connected to one side of the frame 51, and an air outlet pipe 56 is fixedly connected to the other side. When the centrifugal fan 3, fixed to the outside of the frame 1, is started, the heat insulation wall 2 blocks the high-temperature radiation generated during the operation of the ferrosilicon mold structure 5, preventing damage to the centrifugal fan 3 due to high temperatures. After the centrifugal fan 3 starts, it generates cooling airflow, which is transported through the air supply pipe 4 and enters the interior of the ferrosilicon mold structure 5 via the air inlet pipe 55.

[0024] Centrifugal fan 3 is located on the side of heat insulation wall 2 away from silicon iron mold structure 5. Heat insulation wall 2 can block the high temperature radiation generated by silicon iron mold structure 5 during operation, and prevent centrifugal fan 3 from being damaged by high temperature. A distribution groove 57 is opened at the bottom of silicon iron mold frame 51. The interior of distribution groove 57 is connected to the side of air inlet pipe 55 and air outlet pipe 56 near silicon iron mold frame 51. A duct 54 is opened at the bottom of silicon iron mold base plate 52, and the duct 54 is arranged linearly along the bottom of silicon iron mold base plate 52. The interior of duct 54 is connected to the interior of distribution groove 57. The end of air supply pipe 4 away from centrifugal fan 3 is fixedly connected to the end of air inlet pipe 55 away from silicon iron mold frame 51. Cooling airflow entering air inlet pipe 55 first flows into distribution groove 57 opened at the bottom of silicon iron mold frame 51. Distribution groove 57 evenly distributes concentrated airflow into duct 54 opened at the bottom of silicon iron mold base plate 52. When the cooling airflow flows in the air duct 54, it comes into full contact with the silicon iron mold base plate 52 and silicon iron mold frame 51, which are heated after receiving the high temperature molten iron. It quickly absorbs heat to achieve cooling. The high temperature airflow that has completed heat exchange is collected through the air distribution groove 57 to the air outlet pipe 56 on the other side of the silicon iron mold frame 51, and finally discharged from the silicon iron mold structure 5 through the air outlet pipe 56, so as to avoid the high temperature airflow accumulating inside and affecting the cooling effect.

[0025] Working principle: The core working principle of this split-type heat-resistant air-cooled ingot mold is to provide forced cooling airflow through centrifugal fan 3, which is a 5.5kW centrifugal fan; the main body of the silicon iron mold structure 5 is formed by the silicon iron mold frame 51, silicon iron mold base plate 52 and wedge block 53, which is used to receive high-temperature molten iron. The heat is quickly discharged by the interconnected air supply system inside the silicon iron mold structure 5, while the split structure ensures the installation sealing and heat resistance stability.

[0026] During installation, a ceramic fiber blanket is first laid on the bottom of the inner side of the frame 1, and then an air-proof mold is placed on it. This mold is a steel mold shell used to support the silicon iron mold structure 5. The silicon iron mold structure 5 is placed in the air-proof mold inside the frame 1. The silicon iron mold base plate 52 is embedded in the groove of the silicon iron mold frame 51 to form a snap-fit ​​connection. At this time, the air distribution groove 57 is connected to the air duct 54 to form a complete airflow channel. After the silicon iron mold frame 51 and the silicon iron mold base plate 52 are installed, the wedge block 53 is installed on the silicon iron mold frame 51 through the installation groove 58. The gap between the silicon iron mold frame 51 and the silicon iron mold base plate 52 is filled with aluminum silicate fiber or electrode paste to prevent the centrifugal fan 3 from blowing open the sealed gap and causing air leakage after it is started. After the silicon iron mold structure 5 and the centrifugal fan 3 are installed, the gap between the silicon iron mold structure 5 and the air-proof mold is filled and sealed with refractory castable to prevent air leakage when the ingot mold is cooled.

[0027] During use, the centrifugal fan 3, which is fixed to the outside of the frame 1, is started. The heat insulation wall 2 can block the high-temperature radiation generated by the silicon iron mold structure 5 during operation, thus preventing the centrifugal fan 3 from being damaged by high temperature. After the centrifugal fan 3 is running, it generates cooling airflow, which is transported through the air supply pipe 4 and enters the interior of the silicon iron mold structure 5 through the air inlet pipe 55.

[0028] The cooling airflow entering the air inlet duct 55 first flows into the air distribution groove 57 at the bottom of the silicon iron mold frame 51. The air distribution groove 57 evenly distributes the concentrated airflow into the air duct 54 at the bottom of the silicon iron mold base plate 52. When the cooling airflow flows in the air duct 54, it comes into full contact with the silicon iron mold base plate 52 and silicon iron mold frame 51, which are heated after receiving the high-temperature molten iron, and quickly absorbs heat to achieve cooling. The high-temperature airflow that has completed heat exchange is collected through the air distribution groove 57 to the air outlet duct 56 on the other side of the silicon iron mold frame 51, and finally discharged from the silicon iron mold structure 5 through the air outlet duct 56, avoiding the accumulation of high-temperature airflow inside and affecting the cooling effect.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A split-type heat-resistant air-cooled ingot mold, comprising a frame (1), wherein a heat insulation wall (2) is fixedly installed on the outer side of the frame (1), a centrifugal fan (3) is fixedly connected to the outer side of the frame (1), and an air supply duct (4) is fixedly connected to the outer side of the centrifugal fan (3), characterized in that, It also includes a silicon iron mold structure (5): the silicon iron mold structure (5) is placed inside the frame (1); The silicon iron mold structure (5) includes a silicon iron mold frame (51), a silicon iron mold base plate (52) is embedded at the bottom of the silicon iron mold frame (51), wedges (53) are snapped into the two sides of the silicon iron mold frame (51) through mounting grooves (58), and the mounting grooves (58) are opened in the side wall of the silicon iron mold frame (51). An air inlet pipe (55) is fixedly connected to one side of the silicon iron mold frame (51), and an air outlet pipe (56) is fixedly connected to the other side of the silicon iron mold frame (51).

2. The split-type heat-resistant air-cooled ingot mold according to claim 1, characterized in that: The centrifugal fan (3) is located on the side of the heat insulation wall (2) away from the silicon iron mold structure (5).

3. A split-type heat-resistant air-cooled ingot mold according to claim 1, characterized in that: The bottom of the silicon iron mold frame (51) is provided with an air distribution groove (57), and the interior of the air distribution groove (57) is connected to the side of the air inlet pipe (55) and the air outlet pipe (56) near the silicon iron mold frame (51).

4. A split-type heat-resistant air-cooled ingot mold according to claim 1, characterized in that: The bottom of the silicon iron mold base plate (52) is provided with an air duct (54), and the air duct (54) is arranged linearly along the bottom of the silicon iron mold base plate (52).

5. A split-type heat-resistant air-cooled ingot mold according to claim 4, characterized in that: The interior of the air duct (54) is connected to the interior of the air distribution groove (57).

6. A split-type heat-resistant air-cooled ingot mold according to claim 1, characterized in that: The end of the air supply pipe (4) away from the centrifugal fan (3) is fixedly connected to the end of the air inlet pipe (55) away from the silicon iron mold frame (51).

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