Heat treatment furnace for magnesite-chrome bricks

Abstract

The heat treatment furnace comprises a furnace body, a ventilation pipe, a fan, an exhaust pipe, a purification box, a mixing mechanism and a dust filter screen, a coal combustion chamber is arranged at the bottom end of the interior of the furnace body, the ventilation pipe communicated with the coal combustion chamber is arranged on one side of the furnace body, the fan is installed in the ventilation pipe, and the purification box is communicated with the mixing mechanism. A dust filter screen is fixed on the inner side of the furnace body, a plurality of supporting plates are fixed in the furnace body above the dust filter screen, the supporting plates are used for placing magnesite-chrome bricks, an exhaust pipe is mounted at the top of the furnace body, the purification box is fixed on the side surface of the furnace body, ammonia water is stored in the purification box, and the purification box is used for purifying the magnesite-chrome bricks. A mixing mechanism extending into the purifying box is mounted on the purifying box. According to the magnesite-chrome brick firing device, magnesite-chrome bricks can be conveniently heated and fired, tail gas generated during firing can be conveniently purified, and pollution to air is reduced.

Description

Technical Field

[0001] This utility model relates to the field of magnesia-chrome brick production technology, and in particular to a heat treatment furnace for magnesia-chrome bricks. Background Technology

[0002] Magnesia-chrome bricks are refractory materials with magnesium oxide and chromium trioxide as the main components, and periclase and spinel as the main mineral components. These bricks have high refractoriness, high high-temperature strength, strong resistance to alkaline slag erosion, excellent thermal stability, and some adaptability to acidic slag.

[0003] When making magnesia-chrome bricks, they need to be heated and fired in a furnace. Existing magnesia-chrome brick heating furnaces mostly use coal combustion as a heat source. However, the exhaust gas produced by coal combustion contains nitrogen dioxide and sulfur dioxide, which pollute the air. Therefore, in view of the above situation, there is an urgent need to develop a heat treatment furnace for magnesia-chrome bricks that is convenient for heating and firing, and also convenient for purifying the exhaust gas produced during firing, thereby reducing air pollution. This would overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0004] The purpose of this invention is to provide a heat treatment furnace for magnesia-chrome bricks to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A heat treatment furnace for magnesia-chrome bricks includes a furnace body, a ventilation pipe, a fan, an exhaust pipe, a purification box, a mixing mechanism, and a dust filter. A coal combustion chamber is located at the bottom of the furnace body. A ventilation pipe connected to the coal combustion chamber is located on one side of the furnace body, and a fan is installed inside the ventilation pipe. A dust filter is fixed to the inner side of the furnace body. Multiple support plates are fixed above the dust filter inside the furnace body for placing magnesia-chrome bricks. An exhaust pipe is installed at the top of the furnace body. The purification box is fixed to the side of the furnace body and stores [materials / materials]. The ammonia water purification chamber is equipped with a mixing mechanism extending into it. The mixing mechanism includes a drive motor, a first gear, a second gear, a diverter pipe, and an exhaust nozzle. The drive motor is fixed to the top of the purification chamber. A first gear is fixed on the output shaft of the drive motor. A second gear is provided on one side of the first gear and meshes with it. The second gear is fixed to the diverter pipe. The diverter pipe is rotatably connected to the purification chamber. The upper end of the diverter pipe is inserted into and rotatably connected to the exhaust pipe. Multiple exhaust nozzles are provided at the lower end of the diverter pipe.

[0007] Preferably, a dust filter screen is fixed on the inner side of the furnace body, and an air vent is provided on the top of the purification box.

[0008] Preferably, the top of the purification box is detachably fitted with a plug via threads.

[0009] Preferably, a drain pipe is installed on the side of the purification box, and a valve is installed on the drain pipe.

[0010] The beneficial effects of this utility model are as follows: In the heat treatment furnace for magnesia-chrome bricks, the magnesia-chrome bricks are placed on a support plate, and then coal is placed in the coal combustion chamber for combustion. A fan ventilates the coal combustion chamber, ensuring more complete combustion of the coal. Heat flows upwards to heat the magnesia-chrome bricks. Exhaust gas is discharged from the exhaust pipe into a distribution pipe, and then transported to ammonia water in the purification tank through multiple outlets. Simultaneously, a drive motor rotates the first and second gears, which in turn rotate the distribution pipe and outlets, ensuring more thorough contact between the exhaust gas and ammonia water. This eliminates sulfur dioxide and nitrogen dioxide in the exhaust gas through the reaction with ammonia water, and the purified exhaust gas is discharged from the outlet, reducing air pollution. In summary, this utility model facilitates the heating and firing of magnesia-chrome bricks and provides convenient purification of the exhaust gas generated during firing, reducing air pollution. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 .

[0012] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 .

[0013] Figure 3 This is an internal cross-sectional view of the purification box in this utility model.

[0014] Legend:

[0015] 1. Furnace body; 101. Coal combustion chamber; 102. Support plate; 2. Ventilation pipe; 3. Fan; 4. Exhaust pipe; 5. Purification box; 501. Air outlet; 502. Plug; 503. Drain pipe; 504. Valve; 6. Mixing mechanism; 601. Drive motor; 602. First gear; 603. Second gear; 604. Diverter pipe; 605. Air outlet; 7. Dust filter. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Specific implementation examples are given below.

[0018] See Figures 1-3 In this embodiment of the present invention, a heat treatment furnace for magnesia-chrome bricks includes a furnace body 1, a ventilation pipe 2, a fan 3, an exhaust pipe 4, a purification box 5, a mixing mechanism 6, and a dust filter 7. A coal combustion chamber 101 is located at the bottom of the furnace body 1. A ventilation pipe 2, connected to the coal combustion chamber 101, is located on one side of the furnace body 1. A fan 3 is installed inside the ventilation pipe 2. A dust filter 7 is fixed inside the furnace body 1 to filter out dust particles. Multiple support plates 102 are fixed above the dust filter 7 inside the furnace body 1. The support plates 102 are used to place magnesia-chrome bricks. An exhaust pipe 4 is installed on the top of the furnace body 1. The purification box 5 is fixed to the side of the furnace body 1 and stores ammonia water. A dust filter 7 is installed on the purification box 5. A mixing mechanism 6 extends into the interior of the purification chamber 5. The mixing mechanism 6 includes a drive motor 601, a first gear 602, a second gear 603, a diversion pipe 604, and an air outlet 605. The drive motor 601 is fixed to the top of the purification chamber 5. The switch button of the drive motor 601 is installed on the purification chamber 5 (not shown in the figure). The first gear 602 is fixed on the output shaft of the drive motor 601. A second gear 603 is provided on one side of the first gear 602 and meshes with it. The second gear 603 is fixed on the diversion pipe 604. The diversion pipe 604 is rotatably connected to the purification chamber 5. The upper end of the diversion pipe 604 is inserted into the exhaust pipe 4 and rotatably connected to it. The lower end of the diversion pipe 604 is provided with multiple air outlets 605.

[0019] The purification box 5 is provided with an air vent 501 on the top. A plug 502 is detachably installed on the top of the purification box 5 by means of threads. Ammonia water can be added into the plug 502 by removing the plug 502. A drain pipe 503 is installed on the side of the purification box 5. A valve 504 is installed on the drain pipe 503. The liquid in the purification box 5 can be discharged by opening the valve 504.

[0020] Working principle: The magnesia-chrome brick heat treatment furnace is used by placing the magnesia-chrome bricks on the support plate 102 and then placing coal into the coal combustion chamber 101 for combustion. The fan 3 ventilates the coal combustion chamber 101 to make the coal combustion more complete. The heat flows upward to heat the magnesia-chrome bricks. The exhaust gas is discharged from the exhaust pipe 4 into the diversion pipe 604 and is transported to the ammonia water in the purification box 5 through multiple air outlets 605. At the same time, the drive motor 601 drives the first gear 602 and the second gear 603 to rotate. The second gear 603 drives the diversion pipe 604 and the air outlets 605 to rotate, so that the exhaust gas discharged from the air outlets 605 has more complete contact with the ammonia water. The sulfur dioxide and nitrogen dioxide in the exhaust gas react with the ammonia water and are eliminated (nitrogen dioxide reacts with ammonia water to produce ammonium nitrate, ammonium nitrite and water, etc., and sulfur dioxide reacts with ammonia water to produce ammonium sulfite, which is then oxidized to ammonium sulfate). The purified exhaust gas is discharged from the air outlet 501, reducing air pollution.

[0021] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heat treatment furnace for magnesite-chrome brick, characterized by comprising: The furnace includes a furnace body (1), a ventilation pipe (2), a fan (3), an exhaust pipe (4), a purification box (5), a mixing mechanism (6), and a dust filter (7). A coal combustion chamber (101) is located at the bottom of the furnace body (1). A ventilation pipe (2) connected to the coal combustion chamber (101) is located on one side of the furnace body (1). A fan (3) is installed inside the ventilation pipe (2). A dust filter (7) is fixed to the inside of the furnace body (1). Multiple support plates (102) are fixed above the dust filter (7) inside the furnace body (1). The support plates (102) are used to place magnesia-chrome bricks. An exhaust pipe (4) is installed on the top of the furnace body (1). The purification box (5) is fixed to the side of the furnace body (1). The purification box (5) stores ammonia water. A dust filter (7) is installed on the top of the purification box (5). The device is equipped with a mixing mechanism (6) extending into its interior. The mixing mechanism (6) includes a drive motor (601), a first gear (602), a second gear (603), a diverter pipe (604), and an air outlet (605). The drive motor (601) is fixed to the top of the purification box (5). The first gear (602) is fixed on the output shaft of the drive motor (601). A second gear (603) is provided on one side of the first gear (602) and meshes with it. The second gear (603) is fixed on the diverter pipe (604). The diverter pipe (604) is rotatably connected to the purification box (5). The upper end of the diverter pipe (604) is inserted into the exhaust pipe (4) and rotatably connected thereto. The lower end of the diverter pipe (604) is provided with multiple air outlets (605).

2. The heat treatment furnace for magnesia-chrome bricks according to claim 1, characterized in that, The top of the purification box (5) is provided with an air outlet (501).

3. The furnace for heat treating magnesia-chrome bricks according to claim 1, characterized in that, The top of the purification box (5) is detachably fitted with a plug (502) by means of threads.

4. The furnace for heat treating magnesia-chrome bricks according to claim 3, characterized in that, A drain pipe (503) is installed on the side of the purification box (5), and a valve (504) is installed on the drain pipe (503).

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