Edge protection structure for industrial silicon ingot mould

Abstract

The utility model discloses an edge protection structure for an industrial silicon ingot mould, which relates to the technical field of industrial silicon production and comprises an ingot mould body, a high-temperature-resistant brick is arranged in the ingot mould body, a heat insulation plate is arranged on the surface of the ingot mould body, forklift jacks are symmetrically arranged on two sides of the ingot mould body, and the heat insulation plate is tightly attached to the inner wall of the edge of the ingot mould body. A protective screen is formed to isolate high-temperature silicon liquid from the edge of the ingot mold body, direct scouring and corrosion of the high-temperature silicon liquid to the edge of the ingot mold body are reduced, in the whole cooling forming process, the protective structure continuously plays a role until the silicon liquid is cooled into an ingot, a traditional ingot mold is integrally scrapped due to edge corrosion, and materials are seriously wasted. According to the protection structure, the independent and replaceable heat insulation plate assembly is adopted, only the corroded heat insulation plate needs to be replaced, the ingot mold body can be repeatedly used, the production cost is reduced, the heat insulation plate and the high-temperature-resistant bricks form double-layer protection, and direct scouring of high-temperature silicon liquid is effectively isolated.

Description

Technical Field

[0001] This utility model relates to the field of industrial silicon production technology, and in particular to an edge protection structure for industrial silicon ingot molds. Background Technology

[0002] In the production of industrial silicon, the industrial silicon ingot mold is a key piece of equipment used to cast and cool molten silicon to obtain industrial silicon ingots that meet the requirements. It plays a crucial role in the entire industrial silicon production process, directly affecting the quality of the silicon ingots and production efficiency. An industrial silicon ingot mold typically has the following main structures:

[0003] 1. The main body of the ingot mold is generally made of high-temperature resistant cast iron. It is the main part that contains molten silicon. Its structural strength and high-temperature resistance have an important impact on the quality of silicon ingot forming.

[0004] 2. High-temperature resistant bricks are filled at the bottom of the ingot mold to form a silicon liquid cooling chamber, providing a suitable environment for silicon liquid cooling and withstanding the thermal shock of high-temperature silicon liquid.

[0005] 3. Forklift ports are symmetrically provided on both sides of the ingot mold to facilitate the use of forklifts to move ingot molds filled with molten silicon or shaped silicon ingots.

[0006] 4. Plugs are installed at both ends of the forklift inlet to prevent molten silicon from leaking during the pouring process.

[0007] Currently, various technical means are employed in the industry to ensure the normal operation of industrial silicon ingot molds and the quality of silicon ingot production. Some companies have improved the casting process of ingot molds to enhance the quality and high-temperature resistance of the mold body; some manufacturers have selected higher-quality high-temperature resistant bricks to enhance the heat insulation and corrosion resistance of the bottom; and other companies have focused on the sealing design of the plugs to reduce the risk of silicon melt leakage.

[0008] However, the above-described implementation still has the following problems. Regarding ingot mold edge protection, after repeated use, the edge area between the two plugs of a traditional ingot mold, due to direct contact with high-temperature molten silicon and the influence of concentrated cooling stress, experiences a much higher corrosion rate than other parts. This leads to the complete scrapping of the ingot mold, resulting in significant material waste and increased production costs. The traditional solution is to replace the entire ingot mold, which is not only costly but also has extremely low resource utilization. In terms of operational convenience and safety, traditional ingot molds are complex to maintain and replace due to a lack of reasonable structural design, resulting in high labor intensity for workers and certain safety risks. This application proposes a solution to these problems: an edge protection structure for industrial silicon ingot molds. This structure, through its unique design, effectively solves the problem of severe corrosion at the ingot mold edges, extends the service life of the ingot mold, reduces production costs, and ensures safe and reliable operation, reducing labor intensity and safety risks for workers and improving the overall efficiency of the production process. Utility Model Content

[0009] To address the shortcomings of existing technologies, this utility model provides an edge protection structure for industrial silicon ingot molds. This structure solves the problem that, in traditional ingot molds, after repeated use, the edge area between the two plugs corrodes much faster than other parts due to direct contact with high-temperature molten silicon and the effects of concentrated cooling stress. This leads to the complete scrapping of the ingot mold, resulting in a large waste of materials and increased production costs.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] An edge protection structure for an industrial silicon ingot mold includes an ingot mold body, a high-temperature resistant brick disposed within the ingot mold body, a heat insulation plate disposed on the surface of the ingot mold body, forklift slots symmetrically disposed on both sides of the ingot mold body, the heat insulation plate matching the contour of the inner wall of the edge of the ingot mold body, ear-type hooks disposed on the outer side of the heat insulation plate, the ear-type hooks being U-shaped ear plate structures, the high-temperature resistant brick being disposed at the bottom of the industrial silicon ingot mold, the high-temperature resistant brick having a groove formed thereon, an embedded fixing part extending from the bottom of the heat insulation plate, and the heat insulation plate having a thickness of 2.5 cm.

[0012] Preferably, the groove on the surface of the high-temperature resistant brick engages with the embedded fixing part, and the groove depth is millimeters.

[0013] Preferably, the ingot mold body and the heat insulation plate are made of high-chromium cast iron, and the heat insulation plate is tightly fitted to the inner wall of the edge of the ingot mold body, with a gap between them of less than or equal to 0.5 mm.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Throughout the entire cooling and molding process, the protective structure continues to function until the molten silicon cools into an ingot. Traditional ingot molds have to be scrapped entirely due to edge corrosion, resulting in significant material waste. However, this protective structure uses an independent and replaceable heat insulation plate assembly. Only the corroded heat insulation plate needs to be replaced, and the ingot mold body can be reused, greatly reducing material waste, lowering production costs, and conforming to the concept of green manufacturing.

[0016] 2. The heat insulation board and high-temperature resistant bricks form a double layer of protection, effectively isolating the direct impact of high-temperature molten silicon. Furthermore, the heat insulation board and the ingot mold body are made of the same material and have the same coefficient of thermal expansion, avoiding the failure of protection due to temperature difference deformation and significantly improving the overall service life of the ingot mold. Attached Figure Description

[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0018] Figure 1 This is an overall structural diagram of the present invention;

[0019] Figure 2 This is an exploded view of the overall structure of this utility model;

[0020] Figure 3 This is a structural diagram of the heat insulation panel of this utility model;

[0021] Figure 4 This is a cross-sectional view of the installation of this utility model.

[0022] Illustration: 1. Ingot mold body; 2. Heat insulation board; 3. High temperature resistant brick. Detailed Implementation

[0023] This application provides an edge protection structure for industrial silicon ingot molds, effectively solving the problem that in traditional ingot molds, after repeated use, the edge area between the two plugs corrodes much faster than other parts due to direct contact with high-temperature molten silicon and the effect of concentrated cooling stress. This leads to the scrapping of the entire ingot mold, resulting in a large amount of material waste and increased production costs. The proposed edge protection structure for industrial silicon ingot molds, through its unique design, effectively solves the problem of severe edge corrosion, extends the service life of the ingot mold, reduces production costs, and ensures safe and reliable operation, reducing the labor intensity and safety risks for workers and improving the overall efficiency of the production process.

[0024] Example

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the problem that, in terms of ingot mold edge protection, the edge area between the two plugs of a traditional ingot mold, after repeated use, suffers from a much higher corrosion rate than other parts due to direct contact with high-temperature molten silicon and the influence of concentrated cooling stress. This leads to the complete scrapping of the ingot mold, resulting in a large amount of material waste and increased production costs. The overall approach is as follows:

[0026] To address the problems existing in the prior art, this utility model provides an edge protection structure for industrial silicon ingot molds, including an ingot mold body 1, a high-temperature resistant brick 3 disposed inside the ingot mold body 1, a heat insulation plate 2 disposed on the surface of the ingot mold body 1, forklift slots symmetrically disposed on both sides of the ingot mold body 1, the heat insulation plate 2 matching the contour of the inner wall of the edge of the ingot mold body 1, ear-type hooks disposed on the outer side of the heat insulation plate 2, the ear-type hooks being U-shaped ear plate structures, the high-temperature resistant brick 3 disposed at the bottom of the industrial silicon ingot mold, the high-temperature resistant brick 3 having grooves formed on it, an embedded fixing part extending from the bottom of the heat insulation plate 2, the heat insulation plate 2 having a thickness of 2.5 cm, in the industrial silicon smelting and casting process, when the molten silicon liquid (14 When the ingot is poured into the mold at a temperature of 00-1600℃, the edge protection structure begins to function. The heat insulation plate 2, made of the same material as the ingot mold body 1 (such as high-chromium cast iron), is hung on the pre-set slot on the edge of the ingot mold body 1 by the ear-shaped hooks (U-shaped ear plate structure) on the outside, so as to achieve horizontal fixation. The embedded fixing part extending from the bottom of the heat insulation plate 2 is inserted into the 50 mm deep groove pre-made in the high-temperature resistant brick 3 below, so as to complete the longitudinal limiting support. In this way, the heat insulation plate 2 is tightly attached to the inner wall of the edge of the ingot mold body 1, forming a protective barrier to isolate the high-temperature silicon liquid from the edge of the ingot mold body 1, reducing the direct scouring and corrosion of the edge of the ingot mold body 1 by the high-temperature silicon liquid.

[0027] The groove on the surface of the high-temperature resistant brick 3 engages with the embedded fixing part. The groove depth is 50 mm. The ingot mold body 1 and the heat insulation plate 2 are made of high-chromium cast iron. The heat insulation plate 2 is tightly fitted to the inner wall of the edge of the ingot mold body 1, and the gap between the two is less than or equal to 0.5 mm. The protective structure continues to play a role throughout the cooling and forming process until the silicon liquid cools into an ingot. Traditional ingot molds have to be scrapped as a whole due to edge corrosion, resulting in serious material waste. However, this protective structure uses an independent and replaceable heat insulation plate 2 component. Only the corroded heat insulation plate 2 needs to be replaced, and the ingot mold body 1 can be reused, which greatly reduces material waste, lowers production costs, and conforms to the concept of green manufacturing. The heat insulation plate 2 and the high-temperature resistant brick 3 form a double layer of protection, effectively isolating the direct impact of high-temperature silicon liquid. In addition, the heat insulation plate 2 and the ingot mold body 1 are made of the same material and have the same coefficient of thermal expansion, avoiding the failure of protection due to temperature difference deformation, and significantly improving the overall service life of the ingot mold.

[0028] Working principle:

[0029] In the industrial silicon smelting and casting process, when molten silicon (1400-1600℃) is poured into the ingot mold, the edge protection structure begins to function. The heat insulation plate 2, made of the same material as the ingot mold body 1 (such as high-chromium cast iron), is hung on pre-set slots on the edge of the ingot mold body 1 via its outer ear-type hooks (U-shaped ear plate structure) for lateral fixation. The embedded fixing part extending from the bottom of the heat insulation plate 2 inserts into a 50mm deep groove pre-made in the high-temperature resistant brick 3 below, completing the longitudinal limiting support. In this way, the heat insulation plate 2 fits tightly against the inner wall of the edge of the ingot mold body 1, forming a protective barrier that isolates the high-temperature silicon liquid from the edge of the ingot mold body 1, reducing the impact of the high-temperature silicon liquid on the ingot mold body 1. The protective structure continues to function throughout the entire cooling and molding process, from direct erosion and corrosion of the edges to the cooling of the molten silicon into an ingot. Traditional ingot molds are scrapped entirely due to edge corrosion, resulting in significant material waste. However, this protective structure uses an independently replaceable heat insulation plate 2 component. Only the corroded heat insulation plate 2 needs to be replaced, while the ingot mold body 1 can be reused, greatly reducing material waste and production costs, which aligns with the concept of green manufacturing. The heat insulation plate 2 and the high-temperature resistant brick 3 form a double layer of protection, effectively isolating the direct erosion of the high-temperature molten silicon. Furthermore, the heat insulation plate 2 and the ingot mold body 1 are made of the same material and have the same coefficient of thermal expansion, preventing the protection from failing due to temperature difference deformation, and significantly improving the overall service life of the ingot mold.

[0030] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An edge protection structure for industrial silicon ingot molds, comprising an ingot mold body (1), characterized in that, The ingot mold body (1) is provided with high temperature resistant bricks (3), the surface of the ingot mold body (1) is provided with heat insulation plate (2), and forklift slots are symmetrically provided on both sides of the ingot mold body (1). The heat insulation plate (2) matches the inner wall contour of the ingot mold body (1), and the heat insulation plate (2) is provided with ear-shaped hooks on the outside. The ear-shaped hooks are U-shaped ear plate structures. The high-temperature resistant brick (3) is set at the bottom of the industrial silicon ingot mold, and the high-temperature resistant brick (3) has grooves.

2. The edge protection structure for industrial silicon ingot molds as described in claim 1, characterized in that: The heat insulation plate (2) extends into an embedded fixing part at its bottom; The insulation board (2) has a thickness of 2.5 cm.

3. The edge protection structure for industrial silicon ingot molds as described in claim 2, characterized in that: The groove on the surface of the high-temperature resistant brick (3) is engaged with the embedded fixing part.

4. The edge protection structure for industrial silicon ingot molds as described in claim 1, characterized in that: The groove depth is 50 mm.

5. The edge protection structure for industrial silicon ingot molds as described in claim 1, characterized in that: The ingot mold body (1) and the heat insulation plate (2) are made of high-chromium cast iron.

6. The edge protection structure for industrial silicon ingot molds as described in claim 1, characterized in that: The heat insulation plate (2) is closely fitted to the inner wall of the edge of the mold body (1), and the gap between the two is less than or equal to 0.5 mm.

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