A phosphogypsum drying oven arch and drying oven

Abstract

This utility model discloses a phosphogypsum drying oven arch and drying oven. The arch includes an arch body with an inner surface layer and an outer surface layer on both sides. The arch body includes a steel reinforcement frame in a mesh structure and a first insulation layer formed within the mesh. This utility model uses a steel reinforcement frame and a lightweight insulation layer (rock wool insulation material), which greatly reduces the overall weight of the arch. The reduced weight lowers the load-bearing pressure on the drying oven foundation, thereby reducing the cost and workload of foundation construction. At the same time, the lighter arch is more convenient to install and transport, reducing construction difficulty and related costs.

Description

Technical Field

[0001] This utility model relates to the technical field of phosphogypsum processing equipment, specifically to a phosphogypsum drying oven arch and drying oven. Background Technology

[0002] Phosphogypsum is a solid waste generated during the wet-process phosphoric acid production. With the continuous development of the phosphorus chemical industry, the amount of phosphogypsum emitted is increasing daily, making its effective treatment and utilization a key focus of the industry. In the production and processing of phosphogypsum, a drying oven is an essential piece of equipment, and its performance directly affects the production efficiency and quality of the phosphogypsum.

[0003] Traditional arched structures for drying ovens have several drawbacks: some arched structures utilize heavy building materials, resulting in a large overall weight. This not only increases the load on the drying oven foundation but also raises construction and maintenance costs. Furthermore, these traditional arched structures have poor insulation performance, allowing heat to easily dissipate during operation. This makes it difficult to maintain a stable temperature environment inside the drying oven, affecting the drying efficiency and quality of phosphogypsum and resulting in energy waste. In addition, the installation process of traditional arched structures is complex, requiring significant manpower and time, and has a long construction period, which is detrimental to improving project efficiency. Summary of the Invention

[0004] The purpose of this utility model is to provide a phosphogypsum drying oven arch to solve the problems of existing drying oven arches being heavy, having poor heat insulation, and being inconvenient to install.

[0005] Therefore, the arch provided by this utility model includes an arch body, the arch body having an inner surface layer and an outer surface layer on both sides; the arch body includes a steel reinforcement skeleton in a mesh structure and a first insulation layer formed in the mesh.

[0006] Furthermore, the inner surface layer is a mortar layer with a thickness of 20mm to 30mm.

[0007] Furthermore, the outer surface layer is a concrete layer with a thickness of 50mm to 100mm.

[0008] Furthermore, the concrete layer is formed by pouring concrete of grade C30P6 or higher.

[0009] Furthermore, the thickness of the first insulation layer is 100mm~300mm.

[0010] This utility model also provides a phosphogypsum drying room, which includes a load-bearing structure and an arched roof, wherein the arched roof is the arched roof provided by this utility model.

[0011] Furthermore, the load-bearing structure is a brick wall or a reinforced concrete wall, with a plaster layer on the inner side of the wall.

[0012] Furthermore, a second insulation layer is provided between the plaster layer and the inner surface of the wall.

[0013] Furthermore, when the drying room comprises multiple rooms, there is an insulation layer between the load-bearing structures of adjacent drying rooms.

[0014] The beneficial effects of this utility model include:

[0015] Compared with the traditional heavy arch structure of drying room, this utility model adopts a steel frame and a lightweight insulation layer (rock wool insulation material), which greatly reduces the overall weight of the arch. The reduced weight reduces the load-bearing pressure on the drying room foundation, thereby reducing the cost and workload of foundation construction. At the same time, the lighter arch is also more convenient to install and transport, reducing the difficulty of construction and related costs.

[0016] The insulation layer (rock wool insulation material) has excellent thermal insulation properties, effectively preventing heat transfer between the inside and outside of the drying chamber. During the drying process of phosphogypsum, good insulation helps maintain a stable temperature environment inside the drying chamber, reducing heat loss and improving energy efficiency. This not only helps improve the drying efficiency of phosphogypsum and ensure drying quality, but also reduces energy consumption, meeting the requirements of energy conservation and environmental protection.

[0017] The arch structure of this invention can be prefabricated in a factory, with the steel reinforcement frame formed and embedded in the rock wool insulation layer before being transported to the construction site. At the construction site, the prefabricated arch components are simply assembled and installed, followed by applying an inner mortar layer and pouring an outer concrete layer to complete the construction. This prefabricated assembly method reduces on-site workload and construction time, improves project efficiency, and facilitates quality control.

[0018] The steel reinforcement cage provides reliable support for the arch, ensuring sufficient strength and stability when bearing its own weight, internal thermal pressure, and potential external loads. The inner mortar layer and the outer concrete layer further enhance the overall structural performance of the arch, enabling it to adapt to complex working environments, extending its service life, and reducing later maintenance costs. Attached Figure Description

[0019] To more clearly illustrate the embodiments of this application, the accompanying drawings used or involved in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application, and other drawings can be obtained based on these drawings without creative effort:

[0020] Figure 1 This is a schematic diagram of the arch structure described in this utility model;

[0021] Figure 2-3 This is a schematic diagram of the steel reinforcement cage described in this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the drying room described in this utility model. Detailed Implementation

[0023] This section describes the invention more fully with reference to the accompanying drawings, in which illustrative embodiments of the invention are shown. However, the invention is also embodied in many different forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure is thorough and complete, and to fully convey the scope of the invention to those skilled in the art.

[0024] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprising” and “including,” as used herein, specify the presence of the illustrated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof.

[0025] Unless defined to the contrary, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will be further understood that terms such as those defined in common dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant field, and will not be interpreted in an idealized or highly formal sense unless specifically defined herein.

[0026] The arched roof provided by this utility model achieves lightweight, high-efficiency insulation, and convenient installation of the drying chamber arched roof, improving the efficiency and quality of the phosphogypsum product drying process, and reducing energy consumption and costs. The drying chamber arched roof used in the phosphogypsum production process has an arched structure, such as... Figure 1 As shown, it mainly includes a steel reinforcement frame 1, an insulation layer, an inner surface layer 2 (the side of the arch facing the drying room, i.e., the concave arc surface of the arch), and an outer surface layer 3 (the convex arc surface of the arch); the specific components are as follows:

[0027] The steel bars, with specifications calculated according to structural requirements, are then bent and shaped according to the pre-designed arch width using specialized processing equipment and techniques. Figure 2 As shown. The steel reinforcement cage serves as the supporting framework for the entire arch structure, and its shape and dimensions are determined based on the actual space and design requirements of the drying chamber. The steel bars are connected and fixed together by welding or binding to form a stable mesh structure, such as... Figure 3As shown, this is to ensure that the arch has sufficient strength and stability when subjected to various loads.

[0028] The bent steel bars are connected together by welding or binding to form a complete arc-shaped steel skeleton. When welding, it is important to ensure the quality of the weld and that the weld is firm; when binding, appropriate binding wire should be used to bind the steel bars tightly to prevent displacement during subsequent construction.

[0029] Rock wool material is embedded in the mesh 11 of the processed steel reinforcement frame to form an insulation layer. The insulation layer can be made of any lightweight insulation material, such as rock wool. Rock wool is a commonly used, high-efficiency, heat-insulating, and flame-retardant material with advantages such as low thermal conductivity, good insulation performance, and light weight. The thickness of the insulation layer is reasonably selected according to the insulation requirements of the drying room and the actual working conditions, generally ranging from 100mm to 300mm. The insulation layers are tightly spliced ​​together to avoid gaps, preventing heat loss through the gaps and ensuring good insulation performance.

[0030] A layer of mortar is formed by spraying mortar onto the inner surface of the reinforcing steel frame after the insulation layer is embedded. The mortar used is M30 insulation mortar, which has good adhesion, and its thickness is generally 20mm to 30mm.

[0031] The inner surface layer has two main functions: firstly, it protects the insulation layer from mechanical damage or other factors during the use of the drying chamber; secondly, it provides a flat and smooth surface inside the drying chamber, facilitating the flow of materials and the drying process.

[0032] After the inner surface layer is constructed, a concrete layer of grade C30P6 or higher is poured on the outer surface of the arch to form the outer surface concrete layer. The thickness of the concrete layer is determined according to the stress conditions and protection requirements of the arch, and is generally 50 mm to 100 mm.

[0033] The outer surface layer can not only further enhance the structural strength and stability of the arch and improve its ability to resist external loads and environmental factors, but also provide better protection for the insulation layer and inner surface layer, thus extending the service life of the arch.

[0034] Please refer to Figure 4 As shown, this vault is used to construct a drying room, which includes a load-bearing structure 4. The load-bearing structure 4 is a brick wall or a reinforced concrete wall, with a plaster layer 5 on the inner side of the wall; there is a second insulation layer 6 between the plaster layer 4 and the inner side of the wall.

[0035] The drying room can be configured as a single room or multiple rooms (two or more rooms) as needed. When the drying room includes multiple rooms, there is an insulation layer between the load-bearing structures of adjacent drying rooms.

[0036] This disclosure has been described with reference to the foregoing embodiments; however, these embodiments are merely examples for implementing this disclosure. It must be noted that the disclosed embodiments do not limit the scope of this disclosure. On the contrary, any changes and modifications made without departing from the spirit and scope of this disclosure are within the scope of patent protection of this disclosure.

Claims

1. A vaulted roof for a phosphogypsum drying room, characterized in that, The arch includes an arch body, which has an inner surface layer and an outer surface layer on both sides; the arch body includes a steel reinforcement skeleton in a mesh structure and a first insulation layer formed in the mesh; the inner surface layer is a mortar layer and the outer surface layer is a concrete layer.

2. The dome-shaped roof of the phosphogypsum drying oven according to claim 1, characterized in that, The thickness of the inner surface layer is 20mm to 30mm.

3. The dome-shaped roof of the phosphogypsum drying oven according to claim 1, characterized in that, The outer surface layer has a thickness of 50mm to 100mm.

4. The dome-shaped roof of the phosphogypsum drying room according to claim 3, characterized in that, The concrete layer is formed by pouring concrete of grade C30P6 or higher.

5. The dome-shaped roof of the phosphogypsum drying room according to claim 1, characterized in that, The thickness of the first insulation layer is 100mm~300mm.

6. A phosphogypsum drying oven, characterized in that, The drying room includes a load-bearing structure and an arched roof, wherein the arched roof is the arched roof described in any one of claims 1-5.

7. The phosphogypsum drying oven according to claim 6, characterized in that, The load-bearing structure is a brick wall or a reinforced concrete wall, with a plaster layer on the inner side of the wall.

8. The phosphogypsum drying oven according to claim 7, characterized in that, There is a second insulation layer between the plaster layer and the inner side of the wall.

9. The phosphogypsum drying oven according to claim 6, characterized in that, When the drying room comprises multiple rooms, there is an insulation layer between the load-bearing structures of adjacent drying rooms.

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