Sintering device for magnesia-calcium brick production

Abstract

The utility model discloses a sintering device for magnesia-calcium brick production, which comprises a sintering box, a sintering tray is arranged in the sintering box, a filtering mechanism is arranged on a pipeline, the filtering mechanism is composed of a connecting pipe, first filter cotton and second filter cotton, the first filter cotton and the second filter cotton are arranged in the connecting pipe, and the first filter cotton and the second filter cotton are arranged in the connecting pipe. A plate heat exchanger is arranged on one side of the outer portion of the sintering box, and the air inlet end of the plate heat exchanger and the air outlet end of the fan are connected with an air inlet pipe. Heat in the sintering box is absorbed by the fan, the absorbed heat is conveyed to the plate heat exchanger for further heat exchange and treatment, and recycled waste heat can be converted into hot water, so that direct emission and waste of the heat are avoided, flue gas waste heat generated in the sintering process can be efficiently recycled and utilized, and the utilization rate of the flue gas waste heat is improved. And the energy is converted into available energy, so that the energy consumption of the sintering process can be obviously reduced, the carbon emission is reduced, and the energy consumption and the environmental pollution are favorably reduced.

Description

Technical Field

[0001] This utility model relates to the field of magnesium-calcium brick sintering technology, specifically to a sintering device for magnesium-calcium brick production. Background Technology

[0002] Magnesia-calcium bricks, also known as high-calcium magnesia bricks, are a high-quality magnesia refractory material. During production, magnesia-calcium bricks require sintering. Sintering removes moisture and volatiles from the raw materials, causing them to soften gradually. When the temperature reaches a certain level, the mineral components in the raw materials undergo chemical reactions, forming new mineral structures. These new mineral structures gradually densify at high temperatures, forming a sintered body with a certain strength and hardness, thus improving its compressive strength and wear resistance. This is crucial for the application of magnesia-calcium bricks in high-temperature environments.

[0003] Existing sintering equipment generates a large amount of high-temperature waste gas during the production process. This waste gas contains a lot of heat energy, which will be directly discharged into the atmosphere if it is not recovered, resulting in energy waste.

[0004] For example, a porous brick sintering device disclosed in patent CN221259491U uses heat generated by a heating plate to sinter porous bricks. It can only use the directly provided heat energy for sintering and cannot recover or reuse the generated waste heat. If the waste gas, waste residue and other pollutants generated during the sintering process are not effectively treated, they may pollute the environment. Therefore, the heat energy in the waste gas is directly emitted into the atmosphere, which not only wastes energy but may also aggravate environmental pollution.

[0005] Therefore, it is necessary to invent a sintering device for the production of magnesium-calcium bricks to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a sintering device for the production of magnesium-calcium bricks, in order to solve the problem of the lack of heat recovery function in the technology.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sintering device for producing magnesium-calcium bricks, comprising a sintering box, a filtration mechanism, and a plate heat exchanger. The sintering box contains a sintering plate, and a fan is mounted on the top surface of the sintering box. An air suction hood is mounted on the top surface of the sintering box. A pipe connects the air inlet of the fan to the air outlet of the air suction hood. A filtration mechanism is mounted on the pipe, consisting of a connecting pipe, a first filter cotton, and a second filter cotton. The first and second filter cottons are disposed inside the connecting pipe. A plate heat exchanger is mounted on one side of the sintering box, and an air inlet pipe connects the air inlet of the plate heat exchanger to the air outlet of the fan.

[0008] Preferably, the sintering box is hinged to a sealed door on the front side, and the surface of the sealed door is provided with a transparent glass window, which is made of borosilicate glass, allowing the operator to directly observe the inside of the sintering box during the sintering process.

[0009] Preferably, a resistance heater is provided at the bottom of the sintering box, and four casters are provided at the bottom of the outer side of the sintering box. The resistance heater is used to provide the heat required during the sintering process, thereby realizing the sintering and solidification of the magnesium-calcium bricks.

[0010] Preferably, multiple sintering discs are provided, and several ventilation holes are opened at the bottom of the multiple sintering discs. The arrangement of multiple sintering discs can accommodate more magnesium-calcium brick material and increase the output of a single sintering.

[0011] Preferably, the sidewalls of the plurality of sintering trays are provided with sliders, and the contact positions between the sliders and the inner walls on both sides of the sintering box are provided with grooves. The sliders and the grooves are slidably connected. The sliding connection design between the sliders and the grooves makes it easy to pull out and insert the sintering trays into the sintering box, which facilitates the loading and unloading of magnesia-calcium brick materials and the cleaning of the sintering trays.

[0012] Preferably, the first filter cotton is a HEPA filter layer, and the second filter cotton is made of stainless steel fiber. The outer diameters of the first and second filter cottons are tightly attached to the inner wall of the connecting pipe. The combination of the two types of filter cotton ensures the cleanliness of the heat.

[0013] Preferably, the two ends of the connecting pipe are installed to the pipeline via flanges and multiple fixing bolts. This connection method facilitates the disassembly and replacement of the filter mechanism.

[0014] Preferably, a hot water outlet is provided on the lower side of the plate heat exchanger. The provision of the hot water outlet allows the waste heat recovered by the plate heat exchanger to be effectively utilized, such as for heating domestic water or as a heat source for other production processes.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] 1. This utility model uses a fan to absorb heat inside the sintering box and then transports the absorbed heat to a plate heat exchanger for further heat exchange and processing. The recovered waste heat can be converted into hot water, avoiding direct heat discharge and waste. It can efficiently recover and utilize the waste heat of flue gas generated during the sintering process and convert it into usable energy. This can not only significantly reduce the energy consumption of the sintering process and reduce carbon emissions, but also help reduce energy consumption and environmental pollution.

[0017] 2. This utility model has a filtration mechanism installed at the pipe, so that heat can be filtered before entering the fan and plate heat exchanger. When the heat enters the inside of the connecting pipe, it is filtered through layers of internal No. 1 and No. 2 filter cotton, which ensures that the heat entering the fan and plate heat exchanger is purer. The pure heat can exchange heat with the medium in the heat exchanger more efficiently, thus improving the heat exchange efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall front structure of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the air intake hood of this utility model from a bottom view;

[0021] Figure 4 This is a three-dimensional cross-sectional view of the connecting pipe of this utility model;

[0022] Figure 5 This is a three-dimensional structural diagram of the plate heat exchanger of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Sintering box; 2. Sealed door; 3. Resistance heater; 4. Sintering plate; 5. Sliding block; 6. Slide rail; 7. Fan; 8. Suction hood; 9. Pipe; 10. Filter mechanism; 1001. Connecting pipe; 1002. No. 1 filter cotton; 1003. No. 2 filter cotton; 11. Air inlet pipe; 12. Plate heat exchanger; 13. Hot water outlet. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figure 1-5 The sintering apparatus shown includes a sintering box 1, a filtration mechanism 10, and a plate heat exchanger 12. A sealing door 2 is hinged to the front of the sintering box 1. A transparent glass window, which is made of borosilicate glass, is provided on the surface of the sealing door 2. A resistance heater 3 is provided at the bottom of the sintering box 1. Four casters are provided at the bottom of the sintering box 1. A sintering plate 4 is provided inside the sintering box 1. A fan 7 is provided on the top surface of the sintering box 1. An air suction hood 8 is provided on the top surface of the sintering box 1. A pipe 9 is connected between the air inlet of the fan 7 and the air outlet of the air suction hood 8. A filtration mechanism 10 is provided on the pipe 9.

[0027] Multiple sintering plates 4 are provided, and several ventilation holes are opened at the bottom of the multiple sintering plates 4. Slider 5 is provided on the side wall of the multiple sintering plates 4. Sliding grooves 6 are opened at the contact position between the slider 5 and the inner wall on both sides of the sintering box 1. The slider 5 and the sliding grooves 6 are slidably connected. A plate heat exchanger 12 is provided on one side of the outside of the sintering box 1. The air inlet end of the plate heat exchanger 12 is connected to the air outlet end of the fan 7 by an air inlet pipe 11. A hot water outlet 13 is provided on the lower side of the plate heat exchanger 12.

[0028] Multiple sintering trays 4 are provided for placing magnesia-calcium brick materials to be sintered. The ventilation holes on the sintering trays 4 allow gas and heat to flow between the trays during the sintering process, which helps to achieve a more uniform sintering effect. The sliders on the side walls of the sintering trays 4 match the sliding grooves 6 on the inner walls of both sides of the sintering box 1, so that the sintering trays 4 can be easily pulled out and inserted into the sintering box 1, which facilitates the loading and unloading of magnesia-calcium brick materials and the cleaning of the sintering trays 4. At the same time, the fan 7 introduces the hot air in the sintering box 1 into the plate heat exchanger 12 for heat exchange. The heated hot water after heat exchange can be discharged through the hot water outlet 13 for use in other production processes or for recycling.

[0029] The filtration mechanism 10 consists of a connecting pipe 1001, a first filter cotton 1002, and a second filter cotton 1003. The first filter cotton 1002 and the second filter cotton 1003 are arranged inside the connecting pipe 1001. The first filter cotton 1002 is a HEPA filter layer, and the second filter cotton 1003 is made of stainless steel fiber. The outer diameter of the first filter cotton 1002 and the second filter cotton 1003 is tightly attached to the inner wall of the connecting pipe 1001. The two ends of the connecting pipe 1001 are connected to the pipe 9 by flanges and multiple fixing bolts.

[0030] The filter mechanism 10 can filter and remove impurities from the absorbed heat, preventing dust and impurities generated during the sintering process from damaging the fan 7 and the plate heat exchanger 12. The first filter cotton 1002 has high-efficiency filtration performance and can remove fine particles in the air. The second filter cotton 1003 has higher temperature resistance and mechanical strength, ensuring that the air is fully filtered when it passes through, effectively reducing the emission of dust and impurities, and contributing to environmental protection.

[0031] Working principle of this utility model:

[0032] Refer to the instruction manual appendix Figure 1-2When using this utility model, first open the sealing door 2 on the front side of the sintering box 1, slide multiple sintering trays 4 into the sintering box 1 in sequence, place the pre-prepared magnesia-calcium brick material on each sintering tray 4, close the sealing door 2, and then start the resistance heater 3 at the bottom of the sintering box 1 to start heating the sintering box 1. As the temperature rises, the magnesia-calcium brick material begins to sinter gradually. When the temperature inside the sintering box 1 reaches the predetermined value and the magnesia-calcium brick material is completely sintered, the resistance heater 3 can be turned off.

[0033] Refer to the instruction manual appendix Figure 3-5 When using this utility model, the fan 7 is then started. The fan 7 draws in the hot air and generated gas inside the sintering box 1 through the suction hood 8. The hot air and gas enter the filtration mechanism 10 through the pipe 9. In the filtration mechanism 10, the first filter cotton 1002 first removes the small particles in the air, and the second filter cotton 1003 further filters to ensure that impurities in the gas are effectively removed. The filtered gas is transported to the plate heat exchanger 12 through the pipe 9. Cold water or low-temperature fluid is introduced into the plate heat exchanger 12. The hot air exchanges heat with the cold water or low-temperature fluid, and the heat in the hot air is transferred to the cold water or low-temperature fluid, causing it to heat up. After the heat exchange, the heated hot water is discharged through the hot water outlet 13 below the plate heat exchanger 12. This part of the hot water can be collected and used for the heating needs of other production processes, thereby realizing the effective recovery and utilization of heat.

Claims

1. A sintering apparatus for producing magnesium-calcium bricks, comprising a sintering box (1), a filtration mechanism (10), and a plate heat exchanger (12), characterized in that: The sintering box (1) is equipped with a sintering plate (4) inside. A fan (7) is installed on the top surface of the sintering box (1) outside. An air suction hood (8) is installed on the top surface inside the sintering box (1). A pipe (9) is connected between the air inlet end of the fan (7) and the air outlet end of the air suction hood (8). A filter mechanism (10) is installed on the pipe (9). The filter mechanism (10) consists of a connecting pipe (1001), a first filter cotton (1002), and a second filter cotton (1003). The first filter cotton (1002) and the second filter cotton (1003) are installed inside the connecting pipe (1001). A plate heat exchanger (12) is installed on one side of the sintering box (1). An air inlet pipe (11) is connected between the air inlet end of the plate heat exchanger (12) and the air outlet end of the fan (7).

2. The sintering apparatus for producing magnesium-calcium bricks according to claim 1, characterized in that: The sintering box (1) is hinged to a sealing door (2) on the front side. The surface of the sealing door (2) is provided with a transparent glass window, which is borosilicate glass.

3. The sintering apparatus for producing magnesium-calcium bricks according to claim 2, characterized in that: A resistance heater (3) is provided at the bottom of the sintering box (1), and four casters are provided at the bottom of the sintering box (1).

4. A sintering apparatus for producing magnesium-calcium bricks according to claim 3, characterized in that: The sintering discs (4) are provided in multiple ways, and the bottom of each sintering disc (4) has several ventilation holes.

5. A sintering apparatus for producing magnesium-calcium bricks according to claim 4, characterized in that: The sidewalls of the multiple sintering discs (4) are provided with sliders (5), and the sliders (5) are provided with grooves (6) at the contact positions with the inner walls on both sides of the sintering box (1). The sliders (5) and the grooves (6) are slidably connected.

6. A sintering apparatus for producing magnesium-calcium bricks according to claim 1, characterized in that: The first filter cotton (1002) is a HEPA filter layer, and the second filter cotton (1003) is made of stainless steel fiber. The outer diameters of the first filter cotton (1002) and the second filter cotton (1003) are tightly attached to the inner wall of the connecting pipe (1001).

7. A sintering apparatus for producing magnesium-calcium bricks according to claim 6, characterized in that: The two ends of the connecting pipe (1001) are connected to the pipe (9) by flanges and multiple fixing bolts.

8. A sintering apparatus for producing magnesium-calcium bricks according to claim 1, characterized in that: The plate heat exchanger (12) is provided with a hot water outlet (13) on the lower side of the outlet end.

Images