Recycling environment-friendly magnesium-calcium brick production process and equipment

Abstract

The present application relates to the production technology field of magnesium calcium brick, especially to a recycling environment-friendly magnesium calcium brick production process and equipment, comprising the following steps: S1, material selection: magnesite sand 400 parts, magnesite 300 parts, two-step calcined magnesite 50 parts, dolomite sand 50 parts, fused magnesia 150 parts, industrial paraffin wax 3 parts, iron oxide 4.2 parts, apatite 3 parts, iron ore concentrate powder 5-7 parts and aluminum oxide 4.5 parts; the present application is driven by the air discharged in the use process to drive the storage group to rotate, when the storage group rotates, the bricks can be stably placed in the storage box, and multiple storage boxes are replaced and moved to the lower part of the stacking box to realize uniform heating, in addition, the cleaning group arranged in the ventilation group can also realize the cleaning effect of the ventilation group through the flow of air flow, reduce the dust deposition to affect the flow of air, solve the problem that the bricks are easy to knock and affect the quality of the bricks when the bricks are turned over with the brick storage mechanism in the use of the current part of the sintering equipment.

Description

Technical Field

[0001] This invention relates to the field of magnesium-calcium brick production technology, specifically to a recycling-type environmentally friendly magnesium-calcium brick production process and equipment. Background Technology

[0002] Magnesia-calcium bricks are alkaline refractory materials with periclase as the main mineral component and tricalcium silicate (C3S) and dicalcium silicate (C2S) as binders. They have better performance than ordinary magnesia bricks and are widely used in high-temperature equipment such as steelmaking furnaces.

[0003] A search revealed a Chinese patent document disclosing a sintering device for magnesia-calcium bricks [Application No.: CN202320416984.6]. This sintering device includes a combustion chamber, with a firing box located on the upper side of the combustion chamber. A push-pull plate is installed on both the left and right sides of the firing box, and a brick storage mechanism is installed on each push-pull plate. A transfer mechanism connects two brick storage mechanisms. Each brick storage mechanism includes a fixed plate, a storage mesh box, a cover plate, and a rotating shaft. There are two fixed plates, and multiple storage mesh boxes are connected between the two fixed plates. Each storage mesh box has a cover plate installed on its top, which is detachably connected to the storage mesh box by screws. A rotating shaft connected to the right side of the fixed plate is rotated via the push-pull plate. A flipping mechanism for rotating the brick storage mechanism is installed on the push-pull plate located on the right side of the firing box.

[0004] The sintering equipment disclosed in this patent uses a flipping mechanism to drive the brick storage mechanism to flip as a whole, thereby improving the heating effect of each brick. However, when the equipment is in use, there is a gap between the brick and the brick storage mechanism. When the brick storage mechanism is flipped, the brick is prone to significant shaking inside. Therefore, the surface of the brick is prone to collisions during this process, which affects the integrity of the brick surface and the quality of the subsequent finished product. Summary of the Invention

[0005] The purpose of this invention is to provide a process and equipment for the production of reusable and environmentally friendly magnesium-calcium bricks. During the process, the air discharged drives the storage group to rotate. When the storage group rotates, the bricks can be stably placed inside the storage box. Multiple storage boxes move in turn to the bottom of the stacking box to achieve uniform heating. In addition, the cleaning group set inside the ventilation group can also achieve the effect of cleaning the inside of the ventilation group through the airflow, reducing the impact of dust accumulation on airflow. This solves the problem that some sintering equipment is prone to brick collisions and other issues that affect the quality of bricks when the brick storage mechanism is turned over.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a process and equipment for producing reusable and environmentally friendly magnesia-calcium bricks, comprising the following steps: S1. Raw materials: 400 parts magnesia dolomite sand, 300 parts magnesite, 50 parts two-step calcined magnesia dolomite, 50 parts dolomite sand, 150 parts fused magnesia, 3 parts industrial paraffin wax, 4.2 parts iron oxide, 3 parts apatite, 5-7 parts iron concentrate powder, and 4.5 parts alumina. S2. Batching and mixing: The raw materials for this magnesium-calcium brick are prepared from the above-mentioned parts by weight. The above materials are put into a grinding and crushing machine for mechanical crushing in sequence, and the crushed and ground materials are fully mixed. S3. Molding: The mixed materials are placed into a mold, and a hydraulic brick press is used to press the materials in the mold into shape. The density of the finished product is controlled between 2.98-3.05 g / cm³. 3 ; S4. Firing treatment: The semi-finished brick blanks are placed in a sintering furnace at 200-400℃ and fired for 2-3 hours for preheating treatment. The temperature of the preheated sintering furnace is then raised to 1200-1350℃ and maintained for 5 hours. S5. Cooling treatment: Move the fired magnesia-calcium bricks to a cooling zone for slow cooling.

[0007] Using the above process, with magnesia dolomite sand as the main component, the refractoriness and slag resistance of magnesia-calcium bricks can be improved. The raw materials can be crushed by grinding and crushing machine, and multiple materials can be mixed during the crushing process to ensure the uniformity of the material mixture. After the material is formed by hydraulic brick press, it can be sent to sintering furnace for firing. After firing, the finished magnesia-calcium bricks can be obtained by cooling.

[0008] Preferably, the grinding and mixing time in step S2 is more than 20 minutes.

[0009] Preferably, the pressure of the hydraulic brick press in step S3 is 160-180 MPa.

[0010] Preferably, the high-temperature furnace equipment used in step S4 is a reusable and environmentally friendly magnesia-calcium brick production equipment, including: The combustion chamber has stacking boxes welded to both sides of its top. A ventilation assembly is welded between two stacking boxes. The ventilation assembly includes an air supply component welded to the surface of the stacking box. Both ends of the air supply component are respectively connected to the top of the two stacking boxes. A rotating shaft is rotatably passed through the surface of the air supply component. Several blades are fixedly connected to the surface of the rotating shaft. Storage units, installed inside stacking crates and capable of rotation; Anti-blocking unit, installed inside the stacking box and can be raised and lowered; A cleaning assembly is installed on top of the gas delivery component. The cleaning assembly includes a filter section detachably connected to the top of the gas delivery component, a positioning section installed inside the gas delivery component, and a movable scraping section located inside the gas delivery component.

[0011] Preferably, the storage group includes: A fixing bracket is fixedly sleeved on the surface of the rotating shaft. There are four fixing brackets, and the four fixing brackets are arranged in pairs. The crossbar is rotatably connected between two adjacent fixed frames; The reinforcement is fixedly sleeved on the surface of the crossbar. A storage box is welded to the surface of the reinforcement, and a ventilation groove is formed on the surface of the storage box.

[0012] Preferably, the anti-blocking group includes: The rotating component is fixedly sleeved on the surface of the rotating shaft; A sliding component is slidably connected to the inner wall of the stacking box, and the inner wall of the sliding component is in contact with the surface of the rotating component; The lifting frame is slidably connected to the lower inner wall of the stacking box and welded to the sliding component; The connector is welded to the top of the combustion chamber wall.

[0013] Preferably, the filter section includes: A top plate is in contact with the top of the gas transmission component, and a sealing component is welded to the bottom of the top plate, the sealing component penetrating the top of the gas transmission component; A vertical rod is welded to the bottom of the top plate, and a filter element is welded to the bottom of the vertical rod.

[0014] Preferably, the positioning part includes: The protrusion is welded to the inner wall of the gas transmission component, and a filling frame is detachably connected to the top of the protrusion. The surface of the filling frame is in contact with the inner wall of the gas transmission component, and the surface of the filter element is in contact with the inner wall of the filling frame. An elastic element is welded to the top of the filling frame, and a locking block is welded to the top of the elastic element, with one end of the locking block penetrating the interior of the gas supply element.

[0015] Preferably, the scraping portion includes: Connector, penetrating the fill frame; The conical component and the counterweight are welded to both ends of the connector, and the conical component is in contact with the inner wall of the gas transmission component; The scraper is fixedly sleeved on the surface of the connector and fits against the inner wall of the gas delivery component.

[0016] Preferably, a guide is welded to the top of the filling frame, a guide is provided on the inner wall of the gas delivery component, and the surface of the connector is in contact with both the guide and the guide.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention uses the air discharged during the process to drive the storage group to rotate. When the storage group rotates, the bricks can be stably placed inside the storage box. Multiple storage boxes move in turn to the bottom of the stacking box to achieve uniform heating. In addition, the cleaning group set inside the ventilation group can also achieve the effect of cleaning the inside of the ventilation group through the airflow, reducing the impact of dust accumulation on airflow. This solves the problem that bricks are prone to bumping and knocking when they are turned over with the brick storage mechanism in some current sintering equipment, which affects the quality of the bricks. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the firing method steps of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the invention for opening the sealed door of the stacking box; Figure 4 This is a three-dimensional structural diagram of the stacking box and ventilation assembly cut apart according to the present invention; Figure 5 This is a three-dimensional structural diagram of the storage group and the anti-blocking group in this invention; Figure 6 This is a three-dimensional structural diagram of the stacking box and gas transmission component of the present invention. Figure 7 This is a three-dimensional structural diagram of the gas conveying component and the dust scraping component of the present invention. Figure 8 This is a three-dimensional structural diagram of the present invention with the gas delivery component cut open and the filter section removed; Figure 9 This is a three-dimensional structural diagram of the present invention with a partial cross-section; Figure 10 For the present invention Figure 5 A magnified structural diagram of point A in the middle.

[0019] In the diagram: 100, Stacking box; 200, Combustion chamber; 300, Ventilation assembly; 310, Gas delivery component; 320, Rotating shaft; 330, Blade; 400, Storage assembly; 410, Fixing frame; 420, Crossbar; 430, Reinforcing component; 440, Storage box; 500, Anti-clogging assembly; 510, Rotating component; 520, Sliding component; 530, Lifting frame; 540, Receiving component; 600, Cleaning assembly; 610, Filter section 611. Top plate; 612. Vertical rod; 613. Filter element; 620. Positioning part; 621. Filler frame; 622. Elastic element; 623. Protrusion; 630. Scraping part; 631. Connecting part; 632. Conical part; 633. Counterweight; 634. Scraping part; 640. Hollow ring; 650. Limiting plate; 660. Guide element; 670. Extension element; 680. Guide element; 690. Isolation net. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-10 A process for producing recycled and environmentally friendly magnesium-calcium bricks includes the following steps: S1. Raw materials: 400 parts magnesia dolomite sand, 300 parts magnesite, 50 parts two-step calcined magnesia dolomite, 50 parts dolomite sand, 150 parts fused magnesia, 3 parts industrial paraffin wax, 4.2 parts iron oxide, 3 parts apatite, 5-7 parts iron concentrate powder, and 4.5 parts alumina. S2. Batching and mixing: The raw materials for this magnesium-calcium brick are prepared from the above-mentioned parts by weight. The above materials are put into a grinding and crushing machine for mechanical crushing in sequence. The crushed and ground materials are fully mixed, and the grinding and mixing time is more than 20 minutes. S3. Molding: The mixed materials are placed into a mold and pressed into shape using a hydraulic brick press. The pressure during this process is 160-180 MPa, and the density of the finished product is controlled between 2.98-3.05 g / cm³. 3 ; S4. Firing treatment: The semi-finished brick blanks are placed in a sintering furnace at 200-400℃ and fired for 2-3 hours for preheating treatment. The temperature of the preheated sintering furnace is then raised to 1200-1350℃ and maintained for 5 hours. S5. Cooling treatment: Move the fired magnesia-calcium bricks to a cooling zone for slow cooling.

[0022] Using the above process, with magnesia dolomite sand as the main component, the refractoriness and slag resistance of magnesia-calcium bricks can be improved. The raw materials can be crushed by grinding and crushing machine, and multiple materials can be mixed during the crushing process to ensure the uniformity of the material mixture. After the material is formed by hydraulic brick press, it can be sent to sintering furnace for firing. After firing, the finished magnesia-calcium bricks can be obtained by cooling.

[0023] The high-temperature furnace used in step S4 is a reusable and environmentally friendly magnesia-calcium brick production equipment, including a combustion chamber 200 and a stacking box 100 welded to the top and sides of the combustion chamber 200 and equipped with sealed doors. Fuel burns inside the combustion chamber 200, providing heat for the sintering process. A blower, as in existing technology, can be installed on one side of the combustion chamber 200, continuously injecting air into the combustion chamber 200 during fuel combustion to provide oxygen. The heated air inside the combustion chamber 200 is discharged into the stacking box 100. The magnesia-calcium bricks are sintered and rotated inside the stacking box 100, improving the overall efficiency of the magnesia-calcium brick sintering process. A ventilation group 300 is installed between the two stacking boxes 100, through which the hot air inside the stacking box 100 is discharged. The ventilation assembly 300 includes an air supply component 310 welded to the surface of the stacking box 100. A rotating shaft 320 rotatably passes through the surface of the air supply component 310. The rotating shaft 320 rotatably passes through the stacking box 100 and is rotatably connected to the inner wall of the stacking box 100. Several blades 330 are fixedly connected to the surface of the rotating shaft 320. The blades 330 are disposed inside the air supply component 310. Both ends of the air supply component 310 are respectively connected to the top of the two stacking boxes 100. The air inside the stacking box 100 is discharged through the air supply component 310 and blows the blades 330 to rotate. The rotating shaft 320 rotates accordingly. Then the air can be discharged through the other end of the air supply component 310. The discharged air is filtered and then discharged to the outside. A rotatable storage assembly 400 is installed inside the stacking box 100.

[0024] Magnesia-calcium bricks are placed inside storage group 400 and rotate continuously during sintering to ensure better contact between each group of bricks and the hot air, reducing the difference in sintering efficiency between groups and improving the overall sintering speed. Storage group 400 includes four fixed frames 410 fixedly mounted on the surface of rotating shaft 320, arranged in pairs. Several crossbars 420 are rotatably connected between adjacent frames 410. Reinforcing members 430 are fixedly mounted on the surface of the crossbars 420, and storage boxes 440 are welded to the surface of the reinforcing members 430. Ventilation grooves are formed on the surface of the storage boxes 440. Magnesia-calcium bricks are placed in the storage boxes 440, allowing hot air to better contact them through the ventilation grooves. As the rotating shaft 320 rotates, the fixed frames 410 rotate accordingly, and the crossbars 420 rotate alternately downwards. The reinforcing members 430 and the storage boxes 440 are held in place by gravity. Figure 4The arrangement shown allows for the storage of magnesia-calcium bricks placed in storage boxes 440. When storage boxes 440 are moved to the lower position, the magnesia-calcium bricks can be brought closer to the hot air source for rapid heating. This alternating heating reduces the problem of inefficient heating of magnesia-calcium bricks in multiple storage boxes 440. Furthermore, the reinforcement 430 and storage boxes 440 reduce impacts on the bricks, ensuring their surface integrity. An anti-blocking assembly 500 is installed inside the stacking box 100; when the storage assembly 400 rotates, the anti-blocking assembly 500 rises and falls accordingly. A receiving component 540 is welded to the top of the inner wall of the combustion chamber 200, separating the stacking box 100 from the combustion chamber 200. This facilitates the loading and unloading process. If some magnesia-calcium bricks accidentally fall, the receiving component 540 can catch the fallen magnesia-calcium bricks so that workers can pick them up. The anti-blocking assembly 500 includes a rotating component 510 fixedly sleeved on the surface of the rotating shaft 320 and a sliding component 520 slidably connected to the inner wall of the stacking box 100. A lifting frame 530 is slidably connected to the lower part of the inner wall of the stacking box 100. The bottom of the sliding component 520 is welded to the top of the lifting frame 530. When the rotating component 510 rotates, the inner wall of the sliding component 520 is continuously in contact with the surface of the rotating component 510. Accordingly, the sliding component 520 and the lifting frame 530 can be indirectly lifted and moved under the influence of gravity and the push of the rotating component 510. The bottom of the lifting frame 530 can... A through-hole support 540 is provided to facilitate internal cleaning of the support 540, preventing blockages and ensuring smooth airflow. This allows air from the combustion chamber 200 to be better introduced into the stacking box 100 for heating and sintering the magnesia-calcium bricks. The support 540 is used to install a cleaning assembly 600 on the top of the air supply component 310. The cleaning assembly 600 includes a filter section 610 detachably connected to the top of the air supply component 310. The filter section 610 includes a top plate 611 in contact with the top of the air supply component 310. A sealing element is welded to the bottom of the top plate 611, penetrating the top of the air supply component 310 to improve the sealing effect of the top plate 611 after installation. A vertical rod 612 is welded to the bottom of the top plate 611. A filter element 613 is welded to the bottom of the vertical rod 612. The vertical rod 612 is used to connect the top plate 611 and the filter element 613. The flue gas inside the stacking box 100 is discharged into the gas conveying component 310. At this time, the filter element 613 can filter the dust in the flue gas. The staff can remove the filter element 610 regularly to clean the filter element 613. A positioning part 620 that can be used with the filter element 613 is installed at the top inside the gas conveying component 310. The positioning part 620 includes a protrusion 623 welded to the inner wall of the gas conveying component 310. A filling frame 621 is detachably connected to the top of the protrusion 623. An elastic element 622 is welded to the top of the filling frame 621. The surface of the filling frame 621 is in contact with the inner wall of the gas conveying component 310.

[0025] A locking block is welded to the top of the elastic element 622. One end of the locking block penetrates the interior of the air supply element 310, thus limiting the height of the filling frame 621. At this time, the protrusion 623 can support the filling frame 621, and the filling frame 621 is stably placed in the air supply element 310. The surface of the filter element 613 is in contact with the inner wall of the filling frame 621. The filling frame 621 can seal the gap between the filter element 613 and the air supply element 310, ensuring the filtering effect of the filter element 613 on dust in the air. A movable scraping part 630 is provided inside the air supply element 310. The air flow drives the scraping part 630 to move, releasing the blockage of the scraping part 630 on the air supply element 310, allowing air to flow normally. After that, the scraping part 630... The reverse movement of part 30 allows for cleaning of the horizontally placed section of the gas conveying component 310, reducing the impact of dust accumulation on airflow. The scraping section 630 includes a connector 631 penetrating the filling frame 621. The connector 631 can be made of high-temperature resistant materials such as high-temperature fiberglass rope to ensure normal operation during sintering. A conical part 632 and a counterweight 633 are welded to both ends of the connector 631. The surface of the conical part 632 contacts the inner wall of the gas conveying component 310, sealing the interior of the gas conveying component 310. When air from inside the stacking box 100 enters the gas conveying component 310, the air pressure pushes the conical part 632 downwards. As the component descends and approaches the blade 330, the blockage on the gas delivery component 310 is released, allowing air to blow onto the surface of the blade 330 and rotate it. A limit plate 650 is welded to the inner wall of the gas delivery component 310. The top of the counterweight 633 contacts the bottom of the limit plate 650, which limits its movement and prevents the conical component 632 from descending excessively and contacting the blade 330. A dust scraper 634 is fixedly fitted onto the surface of the connecting component 631. The surface of the dust scraper 634 is in contact with the inner wall of the gas delivery component 310. One side of the inner wall of the dust scraper 634 is inclined, allowing dust deposited on the inner wall of the gas delivery component 310 to be scraped away by the dust scraper 634 during the sintering process. The movement of the counterweight 633 is cleaned to prevent dust from accumulating inside the air supply component 310 for a long time and causing blockage in the horizontally placed section inside the air supply component 310. A hollow ring 640 is welded to the inner wall of the air supply component 310. The surface of the conical component 632 is in contact with the inner wall of the hollow ring 640. The hollow ring 640 can restrict the movement of the conical component 632 to prevent the counterweight 633 from falling too low. An isolation net 690 is welded to the inner wall of the stacking box 100. The bottom of the counterweight 633 is in contact with the top of the isolation net 690. The isolation net 690 can support the counterweight 633 and prevent the counterweight 633 from contacting the crossbar 420, ensuring the normal use of the subsequent storage group 400 and the positioning part 620.

[0026] An extension 670 is welded to the inner wall of the gas delivery component 310. The surface of the scraper 634 contacts the surface of the extension 670, which can block the scraper 634 and limit its movement range. A guide 660 is welded to the top of the filling frame 621, and the surface of the connector 631 contacts the surface of the guide 660. The guide 660 can guide the movement of the connector 631, increasing its smoothness during movement. Furthermore, the guide 660 can support the connector 631 and limit its angle of movement. The connector 631 passes through the filling frame 621 and can move smoothly. As the flow rate decreases, a protective frame is fixedly fitted onto the surface of the guide 660. The connector 631 passes through the protective frame and can move normally. The protective frame can shield and protect the guide 660. The staff periodically pushes the elastic member 622 to disconnect the connection between the elastic member 622 and the inner wall of the gas delivery component 310. After that, the staff pulls the elastic member 622 upward to lift the filling frame 621 and cleans the surface of the positioning part 620 to reduce dust accumulation. The inner wall of the gas delivery component 310 is provided with a guide 680. The surface of the connector 631 contacts the surface of the guide 680. The guide 680 can support and guide the connector 631.

[0027] Working principle: Workers first place the magnesium-calcium bricks in the storage box 440 inside the stacking box 100, then close the stacking box 100 and ignite the fuel inside the combustion chamber 200. During this process, workers can inject air into the combustion chamber 200 using a blower to ensure normal combustion. The heated air inside the combustion chamber 200 is then discharged into the stacking box 100. The used hot air is discharged through the air conveyor 310. During this process, the air pushes the conical component 632 downwards, releasing the blockage of the conical component 632 on the air conveyor 310. The air is then discharged into the air conveyor 310, causing the blades 330 to rotate, and the rotating shaft 320 to rotate accordingly. The storage group 400 is stored in the stacking box. The internal rotation of the stacking box 100 reduces the heating efficiency difference of the magnesia-calcium bricks in each storage box 440, improving the overall work efficiency. At the same time, the rotating part 510 rotates with the rotating shaft 320 and drives the lifting frame 530 to move up and down through the sliding part 520, avoiding blockage of the receiving part 540. After the sintering operation is completed, the counterweight 633 descends and pulls the scraper 634 and the conical part 632 to move in the opposite direction through the connecting part 631. The scraper 634 cleans the inner wall of the horizontal section of the air supply part 310, reducing the blockage caused by dust accumulation, in preparation for subsequent use. Accordingly, the exhaust air can be reused and drive the magnesia-calcium bricks to rotate inside the stacking box 100, improving work efficiency.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A process for producing recycled and environmentally friendly magnesium-calcium bricks, comprising the following steps: S1. Raw materials: 400 parts magnesia dolomite sand, 300 parts magnesite, 50 parts two-step calcined magnesia dolomite, 50 parts dolomite sand, 150 parts fused magnesia, 3 parts industrial paraffin wax, 4.2 parts iron oxide, 3 parts apatite, 5-7 parts iron concentrate powder, and 4.5 parts alumina. S2. Batching and mixing: The raw materials for this magnesium-calcium brick are prepared from the above-mentioned parts by weight. The above materials are put into a grinding and crushing machine for mechanical crushing in sequence, and the crushed and ground materials are fully mixed. S3, molding: the mixed material is put into a mold, and the material in the mold is pressed and molded by a hydraulic brick press, and the density of the finished product is controlled at 2.98-3.05 g / cm 3 ; S4. Firing treatment: The semi-finished brick blanks are placed in a sintering furnace at 200-400℃ and fired for 2-3 hours for preheating treatment. The temperature of the preheated sintering furnace is then raised to 1200-1350℃ and maintained for 5 hours. S5. Cooling treatment: Move the fired magnesia-calcium bricks to a cooling zone for slow cooling.

2. The process for producing the recycled environmentally friendly MgO-CaO brick according to claim 1, characterized in that: The grinding and mixing time in step S2 is more than 20 minutes.

3. The process for producing the recycled environmentally friendly MgO-CaO brick according to claim 1, characterized in that: In step S3, the pressure of the hydraulic brick press is 160-180 MPa.

4. A process for producing a recycled environmentally friendly MgO-CaO brick according to any one of claims 1 to 3, characterized in that, The high-temperature furnace equipment used in step S4 is a reusable and environmentally friendly magnesium-calcium brick production equipment, including: Combustion chamber (200), with stacking boxes (100) welded to both sides of the top of the combustion chamber (200); A ventilation assembly (300) is welded between two stacking boxes (100). The ventilation assembly (300) includes an air conveying component (310) welded to the surface of the stacking box (100). The two ends of the air conveying component (310) are respectively connected to the top of the two stacking boxes (100). A rotating shaft (320) is rotatably passed through the surface of the air conveying component (310). Several blades (330) are fixedly connected to the surface of the rotating shaft (320). Storage unit (400), installed inside stacking box (100) and rotatable; Anti-blocking assembly (500), installed inside stacking container (100) and adjustable in height; A cleaning assembly (600) is installed on top of the gas delivery unit (310). The cleaning assembly (600) includes a filter (610) detachably connected to the top of the gas delivery unit (310), a positioning part (620) installed inside the gas delivery unit (310), and a scraping part (630) disposed inside the gas delivery unit (310) and movable.

5. The process for producing the recycled environmentally friendly MgO-CaO brick according to claim 4, characterized in that: The storage group (400) includes: A fixing bracket (410) is fixedly sleeved on the surface of the rotating shaft (320). There are four fixing brackets (410), and the four fixing brackets (410) are arranged in pairs. A crossbar (420) is rotatably connected between two adjacent fixed frames (410); The reinforcement component (430) is fixedly sleeved on the surface of the crossbar (420). A storage box (440) is welded to the surface of the reinforcement component (430), and a ventilation groove is provided on the surface of the storage box (440).

6. The process for producing the recycled environmentally friendly MgO-CaO brick according to claim 4, characterized in that: The anti-blocking assembly (500) includes: The rotating component (510) is fixedly sleeved on the surface of the rotating shaft (320); A sliding member (520) is slidably connected to the inner wall of the stacking box (100), and the inner wall of the sliding member (520) is in contact with the surface of the rotating member (510); The lifting frame (530) is slidably connected to the lower inner wall of the stacking box (100) and welded to the sliding part (520); The receiving part (540) is welded to the top of the inner wall of the combustion chamber (200).

7. The process for producing the recycled environmentally friendly MgO-CaO brick according to claim 4, characterized in that: The filter section (610) includes: The top plate (611) is in contact with the top of the gas transmission component (310), and a sealing component is welded to the bottom of the top plate (611), the sealing component penetrating the top of the gas transmission component (310); A vertical rod (612) is welded to the bottom of the top plate (611), and a filter element (613) is welded to the bottom of the vertical rod (612).

8. The environmentally friendly production process for recycled magnesium-calcium bricks according to claim 7, characterized in that: The positioning part (620) includes: The protrusion (623) is welded to the inner wall of the gas delivery component (310). The top of the protrusion (623) is detachably connected to a filling frame (621). The surface of the filling frame (621) is in contact with the inner wall of the gas delivery component (310). The surface of the filter element (613) is in contact with the inner wall of the filling frame (621). An elastic element (622) is welded to the top of the filling frame (621), and a locking block is welded to the top of the elastic element (622), one end of which penetrates the interior of the gas supply element (310).

9. The environmentally friendly production process for recycled magnesium-calcium bricks according to claim 8, characterized in that: The scraping section (630) includes: Connector (631) penetrates the filler frame (621); The conical component (632) and the counterweight (633) are respectively welded to both ends of the connector (631), and the conical component (632) is in contact with the inner wall of the gas conveying component (310); The scraper (634) is fixedly sleeved on the surface of the connector (631) and fits against the inner wall of the gas delivery component (310).

10. The production process for a reusable and environmentally friendly magnesium-calcium brick according to claim 9, characterized in that: The top of the filling frame (621) is welded with a guide (660), and the inner wall of the gas supply component (310) is provided with a guide (680). The surface of the connector (631) is in contact with the surfaces of the guide (660) and the guide (680).

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