Radiation reflection type heat preservation cover device of energy-saving high-temperature slag groove

Abstract

This utility model discloses a radiation-reflective heat-insulating cover device for an energy-saving high-temperature slag trench. It includes a shell, an insulation layer, and a reflective layer. The shell has an arched structure with a radius of curvature adapted to the width of the slag trench. The shell is made of heat-resistant steel plate or heat-resistant iron plate. Flanges are provided on both sides of the shell, with one flange connected to a pre-embedded base on the side wall of the slag trench via a hinge structure. The shell is closable and positioned above the slag trench, forming a sealed cavity with the slag trench. The insulation layer is cast onto the inner wall of the shell, and anchors are provided on the inner wall, securing the insulation layer to the inner wall. The inner surface of the insulation layer is coated with a reflective coating to form a reflective layer with a reflectivity ≥85% in the 2-10μm wavelength band and a temperature resistance ≥1600℃. This utility model has the advantages of low heat loss, preventing contamination, and ensuring safety when opening the cover.

Description

Technical fields:

[0001] This utility model belongs to the field of high-temperature slag treatment technology, and specifically relates to a radiation-reflective heat preservation cover device for an energy-saving high-temperature slag trench. Background technology:

[0002] In the metallurgical industry, high-temperature molten slag is typically transported to processing stations via open-air slag trenches dug in the ground. These open-air slag trenches have the following disadvantages: 1. Severe heat loss: These trenches are often tens of meters long, with the surface of the high-temperature molten slag directly exposed to the air. Radiation and convection cause a rapid drop in slag temperature, increasing energy consumption for subsequent processing; 2. Pollution diffusion: The high-temperature molten slag releases large amounts of sulfur-containing high-temperature waste gas and dust into the air, worsening the working environment; 3. Safety hazards: The uncovered nature of the open-air slag trenches increases the risk of burns and slag splashes.

[0003] To address these issues, the traditional method involves partially covering open slag trenches with fire-resistant blankets or simple covers. However, this traditional approach also suffers from low insulation efficiency, poor weather resistance, and inconvenient maintenance. Therefore, designing an open slag trench cover that combines high-efficiency insulation, pollution control, and safe operation is an urgent problem to be solved.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content:

[0005] The purpose of this invention is to provide an energy-saving high-temperature slag trench radiation-reflective heat-insulating cover device, thereby overcoming the defects in the prior art.

[0006] To achieve the above objectives, this utility model provides an energy-saving high-temperature slag trench radiation-reflective insulation cover device, comprising a shell, an insulation layer, and a reflective layer; the shell has an arched structure, the radius of curvature of which is adapted to the width of the slag trench, the shell is made of heat-resistant steel plate or heat-resistant iron plate, and flanges are provided on both sides of the shell, one of which is connected to a pre-embedded base on the side wall of the slag trench via a hinge structure; the shell is closable and installed above the slag trench, forming a sealed cavity with the slag trench; the insulation layer is cast on the inner wall of the shell, and anchors are provided on the inner wall of the shell, securing the insulation layer to the inner wall of the shell via the anchors; the inner surface of the insulation layer is coated with a reflective coating to form a reflective layer, the reflectivity of which is ≥85% in the 2-10μm band, and the temperature resistance of the reflective layer is ≥1600℃.

[0007] Preferably, in the technical solution, the insulation layer is cast using zirconium fiber castable, and the density of the insulation layer is ≤0.4g / cm³. 3Thermal conductivity ≤0.3W / (m·K), insulation layer thickness 30-50mm.

[0008] Preferably, in the technical solution, the reflective layer adopts an aluminate-based composite coating, and the thickness of the reflective layer is 1-2 mm.

[0009] Preferably, in the technical solution, the anchor is a Y-shaped heat-resistant steel anchor, and the anchors are distributed in a matrix on the inner wall of the shell.

[0010] Preferably, in the technical solution, a cover opening hook is provided on the outer surface of the housing to facilitate the operator to open the cover from a distance.

[0011] Preferably, in the technical solution, a heat insulation layer is sprayed on the outer surface of the shell. The heat insulation layer is a hollow glass microsphere coating with a thickness of 1-3mm. The heat insulation is achieved by using the gas inside the hollow glass microspheres to further reduce the surface temperature of the shell and prevent burns to the operator.

[0012] Preferably, in the technical solution, a high-temperature resistant sealing strip is embedded on the edge of the shell. The high-temperature resistant sealing strip is made of ceramic fiber cotton to further improve the airtightness of the slag ditch.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The reflective layer reflects over 85% of the infrared heat energy back to the molten slag in the slag trench. Combined with the insulation layer, this reduces radiative heat loss and suppresses convective heat loss. Compared to traditional methods, the slag temperature increases by 80-120°C after transporting over the same distance, which is beneficial for subsequent processing. The shell and slag trench form a sealed cavity, preventing waste gas from diffusing into the external environment. Waste gas is collected directionally by a gas collection pipe connected to the slag trench. Operators can open the cover remotely via a hook, reducing safety risks. Attached image description:

[0015] Figure 1 This is a schematic diagram of the structure of the radiation-reflective heat-insulating cover device for the energy-saving high-temperature slag ditch of this utility model.

[0016] Figure 2 This is a schematic diagram of the open state of the radiation-reflective heat-insulating cover device of the energy-saving high-temperature slag ditch of this utility model.

[0017] Figure 3 This is a schematic diagram of the closed state of the radiation-reflective heat-insulating cover device of the energy-saving high-temperature slag ditch of this utility model. Detailed implementation method:

[0018] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0019] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0020] like Figure 1 As shown, an energy-saving high-temperature slag trench radiation-reflective insulation cover device includes a shell 1, an insulation layer 2, a reflective layer 3, a heat insulation layer 4, and a cover hook 5. The shell 1 is an arched structure with a thickness of 4-6 mm, and the radius of curvature of the shell 1 is adapted to the width of the slag trench 6. The shell 1 is made of heat-resistant steel plate or heat-resistant iron plate. Flange edges 10 are provided on both sides of the shell 1, and one of the flange edges 10 is connected to the pre-embedded base 60 on the side wall of the slag trench through a hinge structure 11. The shell 1 is closable and installed above the slag trench 6, and the shell 1 and the slag trench 6 form a sealed cavity. The insulation layer 2 is cast on the inner wall of the shell 1. The insulation layer 2 is made of zirconium fiber castable and has a density of 0.3 g / cm³. 3 The thermal conductivity is ≤0.3W / (m·K), the thickness of the insulation layer 2 is 30mm, and the inner wall of the shell 1 is provided with anchors 12, which are Y-shaped anchors made of 253MA. The anchors 12 are welded to the inner wall of the shell 1 at a spacing of 20×20cm. The insulation layer 2 is locked to the inner wall of the shell 1 by the anchors 12. The inner surface of the insulation layer 2 is coated with an aluminate-based composite coating to form a reflective layer 3, which is 1.5mm thick. The reflective layer 3 has a reflectivity ≥85% in the 2-10μm band and a temperature resistance ≥1600℃. The outer surface of the housing 1 is provided with a cover opening hook 5, which facilitates the operator to open the cover from a distance; the edge of the housing 1 is embedded with a high-temperature resistant sealing strip, which is made of ceramic fiber cotton, to further improve the airtightness of the slag ditch; the outer surface of the housing 1 is sprayed with a heat insulation layer 4, which is a hollow glass microsphere coating with a thickness of 1-3mm. The heat insulation layer 4 utilizes the gas inside the hollow glass microspheres for heat insulation, further reducing the surface temperature of the housing and preventing burns to the operator.

[0021] like Figure 2-3As shown, during use, the operator places and secures the 3-6m long insulated cover device above the slag trough 6. The operator then hooks the cover opening hook 5 with a pull hook, lowering and sealing the open side of the shell 1. The high-temperature molten slag is then transported through the slag trough 6 to the processing station. During transport, the reflective layer 3 reflects over 85% of the infrared heat energy back into the high-temperature molten slag within the slag trough 6. Combined with the insulation layer 2, this reduces radiative heat loss and suppresses convective heat loss. Compared to traditional methods, the slag temperature increases by 80-120℃ after transporting over the same distance, which is beneficial for subsequent processing. The shell 1 and the slag trough 6 form a sealed cavity, preventing exhaust gases from diffusing into the external environment of the slag trough 6. The gases are collected directionally by a gas collection pipe connected to the slag trough 6. After the high-temperature molten slag transport is complete, the operator can open the shell 1 using the pull hook, allowing the shell 1 to open at an angle of ≥135°.

[0022] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A radiation-reflective heat-insulating cover device for an energy-saving high-temperature slag trench, characterized in that: The system comprises a shell, an insulation layer, and a reflective layer. The shell is an arched structure with a radius of curvature adapted to the width of the slag trench. The shell is made of heat-resistant steel or iron plate, and flanges are provided on both sides of the shell. One flange is connected to a pre-embedded base on the side wall of the slag trench via a hinge structure. The shell is closable and positioned above the slag trench, forming a sealed cavity with the slag trench. The insulation layer is cast onto the inner wall of the shell, and anchors are provided on the inner wall, securing the insulation layer to the inner wall. The inner surface of the insulation layer is coated with a reflective coating to form a reflective layer with a reflectivity ≥85% in the 2-10μm wavelength band and a temperature resistance ≥1600℃.

2. The energy-saving high-temperature slag trench radiation-reflective insulation cover device according to claim 1, characterized in that: The insulation layer is made of zirconium fiber castable, and its density is ≤0.4g / cm³. 3 Thermal conductivity ≤0.3W / (m·K), insulation layer thickness 30-50mm.

3. The energy-saving high-temperature slag trench radiation-reflective insulation cover device according to claim 1, characterized in that: The reflective layer uses an aluminate-based composite coating, and the thickness of the reflective layer is 1-2 mm.

4. The energy-saving high-temperature slag trench radiation-reflective insulation cover device according to claim 1, characterized in that: The anchors are Y-shaped heat-resistant steel anchors, which are distributed in a matrix on the inner wall of the shell.

5. The energy-saving high-temperature slag trench radiation-reflective insulation cover device according to claim 1, characterized in that: A hook for opening the cover is provided on the outer surface of the casing.

6. The energy-saving high-temperature slag trench radiation-reflective insulation cover device according to claim 1, characterized in that: The shell edge is fitted with a high-temperature resistant sealing strip, which is made of ceramic fiber cotton.

7. The energy-saving high-temperature slag trench radiation-reflective insulation cover device according to any one of claims 1-6, characterized in that: The outer surface of the shell is coated with a heat insulation layer, which is a hollow glass microsphere coating with a thickness of 1-3mm.

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