An energy-saving sintering trolley for an ultra-thick layer sintering process

Abstract

The utility model discloses a kind of super-thick material layer sintering process heat preservation energy-saving sintering trolley, it includes fixed base, sintering bin and heat insulation board, wherein heat insulation board includes core insulation layer, support layer and outer protective layer, and is respectively fixedly connected in the four around side surface of sintering bin, and the upper end of sintering bin is rotatably connected with heat preservation bin cover by pivot.The utility model forms full-enclosing heat preservation structure by four around heat insulation board and top heat preservation bin cover, adopts layered design, core insulation layer selects gas-phase silicon dioxide nanometer core material cooperate glass fiber mat support layer and aluminum foil outer protective layer, and thickness is controlled at 40-50mm, can maximize reduce the heat loss of sintering bin to outside;Heat preservation bin cover further blocks top heat loss, can reduce the additional heating energy consumption required in maintaining super-thick material layer during sintering process, realize energy-saving goal, and temperature in bin is more stable, avoid the problem of sintering uneven caused by local heat loss, ensure sintering quality.

Description

Technical Field

[0001] This utility model relates to the field of sintering technology, and in particular to a heat-insulating and energy-saving sintering trolley for ultra-thick material layer sintering process. Background Technology

[0002] In the process of greening and improving efficiency in the steel industry, the sintering process, as the core link in the high-temperature sintering of iron ore powder, directly affects the overall competitiveness of steel enterprises in terms of energy consumption and product quality. In recent years, ultra-thick sintering technology (with a sintering layer thickness typically ≥600mm) has become the mainstream development direction in the industry due to its core advantages of significantly increasing sintered ore production and reducing solid fuel consumption. However, the thermal insulation performance of the sintering trolley, as the core load-bearing and operating equipment of this technology, has become a key bottleneck restricting the full realization of the advantages of ultra-thick sintering technology.

[0003] The sintering trolleys widely used in the industry today exhibit multiple structural defects when adapted to ultra-thick material layer sintering processes: First, the integrity of the insulation structure is severely inadequate—existing trolleys only provide basic insulation design for the bottom and sides, completely lacking effective insulation coverage at the top. Furthermore, the insulation panels around the perimeter use traditional splicing techniques, resulting in significant heat leakage at the seams and failing to form a fully enclosed "bottom-side-top" insulation system. This leads to a large amount of heat loss during sintering through non-working surfaces. Second, the insulation materials and structural design are unreasonable—existing trolleys mostly use single traditional insulation materials, resulting in low insulation efficiency. At the same time, traditional insulation structures lack robust support and sealing designs, making them prone to insulation layer detachment and deformation under long-term high-temperature, high-frequency operation and material impact, leading to high annual maintenance costs.

[0004] Currently, the industry has widely recognized the prominent contradiction between ultra-thick material layer sintering technology and existing trolley insulation design. It has also attempted to improve the situation by locally thickening the insulation layer or replacing a single material, but none of these methods have fundamentally solved the synergistic problems of "lack of full-enclosure insulation, insufficient high-efficiency heat insulation, and poor structural stability." A systematic solution that can take into account the adaptability to all working conditions, long-term reliability, and energy-saving benefits has not yet been proposed. There is an urgent need to redesign the insulation system of the sintering trolley to address the characteristics of the ultra-thick material layer sintering process. Utility Model Content

[0005] The purpose of this invention is to provide a heat-insulating and energy-saving sintering trolley for ultra-thick material layer sintering process, which solves the problems of severe heat loss and high energy consumption for additional heating during the sintering process; at the same time, it solves the problems of uneven sintering and unstable sintering quality caused by local heat loss.

[0006] To achieve the above objectives, this utility model provides a heat-insulating and energy-saving sintering trolley for ultra-thick material layer sintering processes, comprising a fixed base, a sintering chamber, and heat-insulating panels; the sintering chamber is fixedly connected to the upper surface of the fixed base; four heat-insulating panels are fixedly connected to the four sides of the sintering chamber; each heat-insulating panel includes a core insulation layer, a support layer, and an outer protective layer; the upper end of the sintering chamber is rotatably connected to a heat-insulating chamber cover via a rotating shaft, and the outer surface of the heat-insulating chamber cover is provided with rectangular grooves.

[0007] As a further explanation of the above-mentioned heat-insulating and energy-saving sintering trolley for ultra-thick material layer sintering process of this utility model, the lower surface of the fixed base is fixedly connected with four casters, which are distributed at the four corners of the fixed base. This facilitates movement and improves ease of use.

[0008] As a further explanation of the above-mentioned heat-insulating and energy-saving sintering trolley for ultra-thick material layer sintering process of this utility model, the lower end of the heat insulation board is fixedly connected to the upper surface of the fixed base, so that the structure is stable and firm; the thickness of the heat insulation board is 40-50mm, which is conducive to stable heat preservation.

[0009] As a further explanation of the above-mentioned ultra-thick material layer sintering process heat preservation and energy-saving sintering trolley of this utility model, the core heat insulation layer is located on the side of the heat insulation board closer to the sintering chamber; the outer protective layer is located on the side of the heat insulation board away from the sintering chamber; and the support layer is located between the core heat insulation layer and the outer protective layer. This is beneficial for stable heat insulation.

[0010] As a further explanation of the above-mentioned heat-insulating and energy-saving sintering trolley for ultra-thick material layer sintering process of this utility model, the inner surface of the core insulation layer is in contact with the side surface of the sintering chamber; the inner surface of the support layer is in contact with the outer surface of the core insulation layer; and the outer surface of the support layer is in contact with the inner surface of the outer protective layer. This makes the structure of the heat insulation board tight and stable.

[0011] As a further explanation of the above-mentioned ultra-thick material layer sintering process heat preservation and energy-saving sintering trolley of this utility model, the core insulation layer is made of fumed silica nanomaterial; the support layer is made of glass fiber felt; and the outer protective layer is made of aluminum foil. This ensures the heat insulation performance of the insulation board.

[0012] Through the above technical solution, this utility model achieves the following beneficial effects: 1. Compared with the prior art, the present invention provides an energy-saving sintering trolley for ultra-thick material layer sintering process, which forms a fully enclosed insulation structure through the surrounding heat insulation boards and the top heat insulation chamber cover; adopting a layered design, the core heat insulation layer uses fumed silica nanomaterial combined with glass fiber felt support layer and aluminum foil outer protective layer, and the thickness is controlled at 40-50mm, which can minimize the loss of heat from the sintering chamber to the outside; the heat insulation chamber cover further blocks the heat loss from the top, which can reduce the additional heating energy consumption required to maintain the ultra-thick material layer during sintering, achieve the energy saving goal, and the temperature inside the chamber is more stable, avoiding the problem of uneven sintering caused by local heat loss, thus ensuring the sintering quality.

[0013] 2. Compared with the prior art, the heat-insulating and energy-saving sintering trolley for ultra-thick material layer sintering process provided by this utility model can easily realize the transfer of the trolley between different workstations in the sintering production line without relying on large hoisting or traction devices, saving manpower and time costs for equipment transportation, and can also flexibly adjust the position of the trolley according to the production rhythm, thereby improving the flexibility and efficiency of the overall production operation. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the overall structure of a heat-insulating and energy-saving sintering trolley for an ultra-thick material layer sintering process according to this utility model. Figure 2 This is a top view of the heat-insulating and energy-saving sintering trolley for the ultra-thick material layer sintering process according to the present invention. Figure 3 This is a longitudinal three-dimensional cross-sectional view of a heat-insulating and energy-saving sintering trolley for an ultra-thick material layer sintering process according to the present invention. Figure 4 This is a schematic diagram of the transverse three-dimensional cross-sectional structure of a heat-insulating and energy-saving sintering trolley for an ultra-thick material layer sintering process according to the present invention.

[0015] Legend: 1. Fixed base; 2. Rotating shaft; 3. Rectangular groove; 4. Insulated chamber cover; 5. Sintering chamber; 6. Casters; 7. Thermal insulation board; 8. Core insulation layer; 9. Support layer; 10. Outer protective layer. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment provides a heat-insulating and energy-saving sintering trolley for ultra-thick material layer sintering process, including a fixed base 1, a sintering chamber 5, and heat insulation boards 7. The sintering chamber 5 is fixedly connected to the upper surface of the fixed base 1. There are four heat insulation boards 7, which are fixedly connected to the four sides of the sintering chamber 5. The heat insulation boards 7 include a core heat insulation layer 8, a support layer 9, and an outer protective layer 10. The upper end of the sintering chamber 5 is rotatably connected to a heat insulation chamber cover 4 through a rotating shaft 2. The outer surface of the heat insulation chamber cover 4 is provided with rectangular grooves 3.

[0018] Furthermore, four casters 6 are fixedly connected to the lower surface of the fixed base 1, and are distributed at the four corners of the fixed base 1.

[0019] Specifically, the fixed base 1 provides overall support and fixation, and the four casters 6 installed on its lower surface facilitate the flexible movement and positioning of the trolley; at the same time, the sintering chamber 5 is the main container for sintering materials, and the heat preservation chamber cover 4 is opened and closed through the pivot 2, which facilitates loading and unloading of materials and forms a sealed space after closing. The rectangular grooves 3 on its surface are used to open the heat preservation chamber cover 4.

[0020] Furthermore, the lower end of the heat insulation board 7 is fixedly connected to the upper surface of the fixed base 1, and the thickness of the heat insulation board 7 is 40-50mm; the heat insulation board 7 includes a core heat insulation layer 8, a support layer 9, and an outer protective layer 10; the core heat insulation layer 8 is located on the side of the heat insulation board 7 close to the sintering chamber 5, the outer protective layer 10 is located on the side of the heat insulation board 7 away from the sintering chamber 5, and the support layer 9 is located between the core heat insulation layer 8 and the outer protective layer 10; the inner surface of the core heat insulation layer 8 is in contact with the side surface of the sintering chamber 5, the inner surface of the support layer 9 is in contact with the outer surface of the core heat insulation layer 8, and the outer surface of the support layer 9 is in contact with the inner surface of the outer protective layer 10; the material of the core heat insulation layer 8 is fumed silica nanomaterial, the material of the support layer 9 is glass fiber felt, and the material of the outer protective layer 10 is aluminum foil.

[0021] Specifically, four thermal insulation panels 7 arranged around the sintering chamber 5 together form a highly efficient insulation system, with a thickness of 40 to 50 millimeters ensuring excellent thermal insulation performance. The core insulation layer 8 uses fumed silica nanomaterials, directly facing the high temperature of the sintering chamber 5, and utilizes its extremely low thermal conductivity to minimize heat transfer outwards. The support layer 9 is made of fiberglass felt, providing mechanical support for the core insulation layer 8 and further enhancing the insulation effect. The outermost protective layer 10 uses aluminum foil, which can reflect heat radiation to assist in insulation and protect the internal structure from damage by the external environment. The layers are tightly bonded together, working together to achieve long-lasting and efficient insulation of the sintering chamber 5, thereby achieving energy saving.

[0022] Working principle: Open the insulation chamber cover 4, load the sintering material into the sintering chamber 5, and then close the insulation chamber cover 4. During the sintering process, the sintering chamber 5 generates a large amount of heat, and the heat insulation boards 7 around it begin to play a key role. The core heat insulation layer 8 effectively blocks the heat from being conducted outward using its nanoporous structure. The support layer 9 maintains the overall structural stability and assists in heat insulation. The outer protective layer 10 reflects some heat radiation and protects the internal structure. This can retain heat inside the sintering chamber 5 to the maximum extent, significantly reduce heat loss, improve heat utilization, and achieve heat preservation and energy saving in the ultra-thick material layer sintering process.

[0023] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A heat-insulating and energy-saving sintering trolley for ultra-thick material layer sintering process, comprising a fixed base (1), a sintering chamber (5), and a heat-insulating plate (7), characterized in that, The upper surface of the fixed base (1) is fixedly connected to a sintering chamber (5); there are four heat insulation boards (7), which are fixedly connected to the four sides of the sintering chamber (5); the heat insulation board (7) includes a core heat insulation layer (8), a support layer (9) and an outer protective layer (10); the upper end of the sintering chamber (5) is rotatably connected to a heat insulation chamber cover (4) through a rotating shaft (2), and the outer surface of the heat insulation chamber cover (4) is provided with a rectangular groove (3).

2. The heat-insulating and energy-saving sintering trolley for ultra-thick material layer sintering process according to claim 1, characterized in that, The lower surface of the fixed base (1) is fixedly connected with casters (6); there are four casters (6), which are distributed at the four corners of the fixed base (1).

3. The heat-insulating and energy-saving sintering trolley for ultra-thick material layer sintering process according to claim 1, characterized in that, The lower end of the heat insulation board (7) is fixedly connected to the upper surface of the fixed base (1), and the thickness of the heat insulation board (7) is 40-50mm.

4. The heat-insulating and energy-saving sintering trolley for ultra-thick material layer sintering process according to claim 1, characterized in that, The core insulation layer (8) is located on the side of the heat insulation board (7) close to the sintering chamber (5); the outer protective layer (10) is located on the side of the heat insulation board (7) away from the sintering chamber (5); the support layer (9) is located between the core insulation layer (8) and the outer protective layer (10).

5. The heat-insulating and energy-saving sintering trolley for ultra-thick material layer sintering process according to claim 4, characterized in that, The inner surface of the core insulation layer (8) is in contact with the side surface of the sintering chamber (5); the inner surface of the support layer (9) is in contact with the outer surface of the core insulation layer (8); and the outer surface of the support layer (9) is in contact with the inner surface of the outer protective layer (10).

6. The heat-insulating and energy-saving sintering trolley for ultra-thick material layer sintering process according to claim 4, characterized in that, The core insulation layer (8) is made of fumed silica nanomaterial; the support layer (9) is made of glass fiber felt; and the outer protective layer (10) is made of aluminum foil.

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