Air-cooled ingot mould for industrial silicon casting

Abstract

The utility model belongs to the technical field of metallurgy and energy, and discloses an air cooling ingot mould for industrial silicon casting, which comprises a main body, a mounting groove is arranged on the top surface of the main body, refractory bricks are arranged on the bottom surface of the mounting groove, asbestos cloth is filled between the refractory bricks and the mounting groove, and a cast iron plate is arranged between the asbestos cloth and the mounting groove. A groove is formed in the top face of the cast iron plate, a steel pipe is laid in the groove, and an air outlet and an air inlet are formed in the front side and the rear side of the cast iron plate. Meanwhile, uniform cooling can be achieved, mold laying silicon is not used, silicon liquid segregation is reduced, and the product quality is improved; the ingot mold has the advantages of being safe to use, large in heat dissipation area, uniform in heat dissipation, not prone to causing local segregation, low in working temperature, free of silicon powder bottom padding, capable of reducing quality pollution, prolonging the service life of the ingot mold and improving operation safety.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgy and energy, and particularly relates to an air-cooled ingot mold for industrial silicon casting. Background Art

[0002] In industrial silicon production, liquid silicon needs to be cast and molded. Currently, the industry uses naturally air-cooled, circulating water-cooled, and air-cooled ingot molds. Naturally air-cooled ingot molds primarily cast the liquid silicon directly into the mold, followed by natural air cooling. Water-cooled ingot molds use cooling water introduced into the bottom and sides of the mold, allowing direct contact between the water and the mold exterior to reduce the temperature and accelerate the cooling and molding of the liquid silicon. Air cooling operates on a similar principle to water cooling, using circulating air to lower the mold temperature, thereby accelerating the cooling and molding of the liquid silicon.

[0003] The drawbacks of naturally cooled ingot molds are, first, the long cooling time and wasted waiting time. Second, the high-temperature silicone liquid can cause the mold to melt, affecting product quality and posing the risk of silicon leakage due to melting through the mold. The biggest drawback of water-cooled ingot molds is their lack of safety. Whether the mold cracks, causing silicone liquid to leak and come into contact with cooling water, or a cooling water system malfunction, causing cooling water to leak or splash and come into direct contact with silicone liquid, both can cause the high-temperature silicone liquid to explode. Furthermore, water-cooled ingot molds require extensive water piping, requiring high site requirements and significant investment costs. Utility Model Content

[0004] In view of the problems raised by the above background technology, the purpose of the present utility model is to provide an air-cooled ingot mold for industrial silicon casting.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by this utility model are as follows:

[0006] An air-cooled ingot mold for industrial silicon casting, comprising a main body, a mounting groove formed on the top surface of the main body, refractory bricks mounted on the bottom surface of the mounting groove, asbestos cloth filled between the refractory bricks and the mounting groove, and a cast iron plate mounted between the asbestos cloth and the mounting groove;

[0007] A groove is provided on the top surface of the cast iron plate, a steel pipe is laid in the groove, an air outlet and an air inlet are provided on the front and rear sides of the cast iron plate, and the steel pipe is connected to the air outlet and the air inlet.

[0008] It is further defined that the output end of the air outlet is bent upward to divert the air. With this design, the hot air from the air outlet flows upward, which can allow the heat to directly enter the dust collecting flue, thereby reducing the working temperature of the workshop employees.

[0009] It is further defined that the steel pipe is an S-shaped row pipe, and the steel pipe is laid in the groove in a tightly filled manner. Such a design increases the overall length of the steel pipe, thereby increasing the cold air flow distance, and the precise filling laying method increases the heat exchange area and improves the uniformity of heat dissipation at the bottom of the ingot mold.

[0010] The beneficial effects of adopting the utility model are:

[0011] The structural design of the utility model can achieve rapid cooling of the ingot mold, reduce waiting time, improve working efficiency, and reduce the risk of investment mold; at the same time, it can achieve uniform cooling and eliminate the need for mold-laying silicon, reduce silicon liquid segregation and improve product quality; it can also reduce the working environment temperature of employees, solve the problem of long natural cooling time, and avoid the risk of silicon liquid exploding when it comes into contact with water during the water cooling process;

[0012] The structural design of the utility model only uses compressed air for cooling, which neither wastes water resources nor pollutes the air; and the air inlet can be directly connected to the compressed air pipeline and controlled by a valve, which enhances the installation adaptability;

[0013] The utility model has the advantages of safe use, large heat dissipation area, uniform heat dissipation, not easy to cause local segregation, low working temperature, no need for silicon powder padding, reduced quality pollution, extended ingot mold service life and increased operation safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention can be further described by way of non-limiting examples given in the accompanying drawings;

[0015] Figure 1 This is a schematic top view of an embodiment of an air-cooled ingot mold for industrial silicon casting according to the present invention;

[0016] Figure 2 This is a structural diagram of a cast iron plate and a steel pipe in an embodiment of an air-cooled ingot mold for industrial silicon casting according to the utility model;

[0017] Figure 3 This is a schematic cross-sectional view of an embodiment of an air-cooled ingot mold for industrial silicon casting according to the present invention. Figure 1 ;

[0018] Figure 4 This is a schematic cross-sectional view of an embodiment of an air-cooled ingot mold for industrial silicon casting according to the present invention. Figure 2 ;

[0019] The main component symbols are described as follows:

[0020] Main body 1; mounting groove 2; refractory brick 3; asbestos cloth 4; cast iron plate 5; groove 6; steel pipe 7; air outlet 8; air inlet 9. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 4 As shown, the utility model is an air-cooled ingot mold for industrial silicon casting, comprising a main body 1, a mounting groove 2 is formed on the top surface of the main body 1, a refractory brick 3 is installed on the bottom surface of the mounting groove 2, asbestos cloth 4 is filled between the refractory brick 3 and the mounting groove 2, and a cast iron plate 5 is installed between the asbestos cloth 4 and the mounting groove 2;

[0023] A groove 6 is provided on the top surface of the cast iron plate 5 , and a steel pipe 7 is laid in the groove 6 . An air outlet 8 and an air inlet 9 are provided on the front and rear sides of the cast iron plate 5 , and the steel pipe 7 is connected to the air outlet 8 and the air inlet 9 .

[0024] In this embodiment, when an air-cooled ingot mold for industrial silicon casting is used, compressed cold air enters the steel pipe 7 from the air inlet 9 and is discharged from the air outlet 8;

[0025] When the cold air is in the steel pipe 7, the steel pipe 7 cools the cast iron plate 5, the asbestos cloth 4 and the refractory bricks 3 by heat exchange, thereby accelerating the cooling and forming of the silicon liquid flowing over the refractory bricks 3, and the asbestos cloth 4 effectively absorbs the water vapor.

[0026] It is preferred that the output end of the air outlet 8 bends upward to divert the air. With this design, the hot air from the air outlet 8 flows upward, allowing the heat to directly enter the dust collecting flue, thereby reducing the working temperature of the workshop employees. In fact, diversion measures can also be considered according to specific circumstances.

[0027] Preferably, the steel pipe 7 is an S-shaped pipe, and the steel pipe 7 is laid in the groove 6 in a tightly packed manner. This design increases the overall length of the steel pipe 7, thereby increasing the cold air flow distance, and the precise filling laying method increases the heat exchange area and improves the uniformity of heat dissipation at the bottom of the ingot mold. In fact, the laying structure of the steel pipe 7 can also be considered according to specific circumstances.

[0028] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by persons skilled in the art without departing from the spirit and technical principles disclosed herein shall be covered by the claims of the present invention.

Claims

1. An air-cooled ingot mold for industrial silicon casting, comprising a main body (1), characterized in that: The main body (1) has a mounting groove (2) on its top surface, a refractory brick (3) is installed on the bottom surface of the mounting groove (2), asbestos cloth (4) is filled between the refractory brick (3) and the mounting groove (2), and a cast iron plate (5) is installed between the asbestos cloth (4) and the mounting groove (2); The top surface of the cast iron plate (5) is provided with a groove (6), a steel pipe (7) is laid in the groove (6), and the front and rear sides of the cast iron plate (5) are provided with an air outlet (8) and an air inlet (9), and the steel pipe (7) is connected to the air outlet (8) and the air inlet (9).

2. The air-cooled ingot mold for industrial silicon casting according to claim 1, characterized in that: The output end of the air outlet (8) bends upward to guide the air.

3. The air-cooled ingot mold for industrial silicon casting according to claim 2, characterized in that: The steel pipe (7) is an S-shaped pipe, and the steel pipe (7) is laid in the groove (6) in a tightly packed manner.

Images