High-temperature resistant special-shaped bricks, graphitization furnaces and movable graphitization production systems

Abstract

The present application relates to the technical field of graphitization, and provides a high-temperature resistant special-shaped brick, a graphitization furnace, and a movable graphitization production system. The high-temperature resistant special-shaped brick includes: a brick body portion; and at least one hollow groove formed in the brick body portion, wherein the brick body portion has opposite first and second surfaces in the width direction, the hollow groove communicates with the first surface, and the first surface is close to the outer surface of the graphitization furnace; the brick body portion has opposite third and fourth surfaces in the thickness direction, and the brick body portion is respectively provided with a clamping portion and a clamping groove portion on the third surface and the fourth surface, and the clamping groove portion is adapted to cooperate with the clamping portion.

Description

Technical Field

[0001] This application mainly relates to the field of graphitization, and particularly relates to a high-temperature resistant special-shaped brick, a graphitization furnace, and a movable graphitization production system. Background Art

[0002] Conventional graphitization furnace walls are usually built with solid brick walls. Due to the poor thermal conductivity of the materials and the large wall thickness, when the heat in the furnace core conducts outward, heat accumulates on the inner side of the refractory brick wall. When the heat conducted out of the furnace core reaches equilibrium with the heat conducted out of the furnace wall, the temperature on the inner side of the furnace wall reaches the highest point. Under normal circumstances, the highest temperature reached by the solid brick wall in the hollow furnace state (i.e., the non-working state without filling materials inside) is between 1200°C and 1250°C. This temperature is relatively high, and some brick walls often get damaged because they cannot withstand this high temperature. Moreover, the solid brick wall has a high weight, especially for some movable graphitization furnaces, which brings the disadvantage of difficult movement. Summary of the Invention

[0003] The technical problem to be solved by this application is to provide a high-temperature resistant special-shaped brick, a graphitization furnace, and a movable graphitization production system, which can naturally form an exhaust channel on the basis of lightweight design, and improve the safety, reliability, and mobility of the graphitization furnace.

[0004] To solve the above technical problem, this application provides a high-temperature resistant special-shaped brick, which is applied to a graphitization furnace. The high-temperature resistant special-shaped brick includes: a brick body part; and at least one hollow groove, which is opened in the brick body part. Wherein, the brick body part has opposite first and second surfaces in the width direction, the hollow groove communicates with the first surface, and the first surface is close to the outer surface of the graphitization furnace; the brick body part has opposite third and fourth surfaces in the thickness direction, and the brick body part has a clamping part and a clamping groove part on the third surface and the fourth surface respectively, and the clamping groove part is adapted to cooperate with the clamping part.

[0005] Optionally, the brick body part has the following dimensional parameters: the brick body length of the brick body part in the length direction is 400 mm to 500 mm; and / or the brick body width of the brick body part in the width direction is 250 mm to 300 mm; and / or the brick body thickness of the brick body part in the thickness direction is 80 mm to 120 mm.

[0006] Optionally, the clamping part extends in the length direction and the thickness direction, and the clamping part includes a first arc segment, and the radius range of the first arc segment is 20 mm to 28 mm.

[0007] Optionally, the clamping groove part extends in the length direction and the thickness direction, and the clamping groove part includes a second arc segment, and the radius range of the second arc segment is 20 mm to 28 mm.

[0008] Optionally, the hollow groove includes a ventilation groove, the ventilation groove has a ventilation groove opening on the first surface, and the opening length of the ventilation groove opening along the length direction of the brick body portion is 80 mm to 120 mm.

[0009] Optionally, the shape of the ventilation groove in the cross section of the plane where the width direction and the thickness direction are located includes a U shape.

[0010] Optionally, the opening depth of the ventilation groove along the width direction is less than 50% of the brick width of the brick body portion.

[0011] Optionally, in the high-temperature resistant special-shaped brick, the number of the hollow grooves is not more than 3.

[0012] Optionally, the material of the brick body portion includes aluminum oxide, wherein the content of the aluminum oxide is greater than 55%.

[0013] On the other hand, the present application also provides a graphitization furnace, including a furnace body area and a furnace wall. The furnace body area is suitable for firing a to-be-treated blank, and the furnace wall surrounds the furnace body area at least from all around and the bottom. Among them, at least a part of the furnace wall includes an exhaust furnace wall, and the exhaust furnace wall is built by a plurality of high-temperature resistant special-shaped bricks according to any embodiment of the present application. The hollow grooves of the plurality of high-temperature resistant special-shaped bricks are communicated to form an exhaust channel of the furnace wall of the graphitization furnace.

[0014] Optionally, the furnace wall includes an inner wall portion closer to the furnace body area and an outer wall portion located outside the inner wall portion. The inner wall portion includes the exhaust furnace wall. Further, the exhaust channel of the furnace wall is located between the outer wall portion and the exhaust furnace wall.

[0015] Optionally, an air inlet hole is further included, and the air inlet hole is opened below the furnace body area or at the bottom of the inner wall portion. Among them, the air inlet hole is communicated with the exhaust channel of the furnace wall.

[0016] Optionally, a support frame is further included, which is fixedly connected to the outside of the outer wall portion. Among them, the support frame includes a plurality of cross beams and / or a plurality of columns.

[0017] Optionally, the outer wall portion includes a steel structure or a brick wall structure. Among them, the steel structure includes steel support columns and steel plates, and the brick wall structure is built by heat-resistant concrete, red bricks and / or refractory clay bricks.

[0018] Optionally, it further includes a fixing pendant. The fixing pendant includes a connecting portion extending along the width direction of the brick body portion of the high-temperature resistant special-shaped brick and a fixing portion extending along the length direction of the brick body portion. Wherein, the fixing portion is connected to the connecting portion, and in multiple high-temperature resistant special-shaped bricks, at least a part of the hollow grooves include pendant grooves, and the fixing pendant is adapted to be inserted into the pendant grooves so that the high-temperature resistant special-shaped bricks are fixedly connected to the outer wall portion.

[0019] Optionally, the pendant groove includes an extending portion and a cavity portion communicating with the extending portion. The extending portion communicates with the first surface of the brick body portion so that the pendant groove communicates with the first surface. Wherein, the extending portion is adapted to accommodate the connecting portion, the cavity portion is adapted to accommodate the fixing portion, and the connection portion where the extending portion and the cavity portion communicate has a first diameter along the length direction, and the length of the first diameter along the length direction is less than the length of the fixing portion of the fixing portion along the length direction.

[0020] Optionally, the end face of the fixing portion is adapted to contact the inner wall of the cavity portion in the contact area. Wherein, the inner wall includes an arc surface in the contact area.

[0021] Optionally, the cross-section of the cavity portion in the plane where the width direction and the length direction are located includes a circle or an ellipse, and the cross-section of the extending portion in the plane where the width direction and the thickness direction are located includes a rectangle.

[0022] Optionally, the outer wall portion is arranged on the first surface of the high-temperature resistant special-shaped brick. Wherein, the outer wall portion is provided with fastening holes, and the connecting portion is adapted to pass through the fastening holes and the extending portion at the same time so that the high-temperature resistant special-shaped bricks are fixedly connected to the outer wall portion through the fixing pendant.

[0023] On the other hand, the present application also proposes a movable graphitization production system. The movable graphitization production system includes the graphitization furnace proposed in any embodiment of the present application.

[0024] Compared with the prior art, the present application has the following advantages: By designing high-temperature resistant special-shaped bricks with hollow grooves, an exhaust channel is naturally formed between adjacent bricks. When applied to a graphitization furnace, the ventilation and exhaust performance of the graphitization furnace can be significantly improved. Through the improved method, the maximum temperature that the high-temperature resistant special-shaped brick can reach in the hollow furnace state can be controlled at 950°C to 1000°C, significantly reducing the high-temperature tolerance requirement of the brick wall, and structurally solving the shortcoming that the furnace wall of the graphitization furnace is not resistant to high temperatures. According to relevant production verification, the possibility of the furnace wall of the graphitization furnace being damaged by high temperature is reduced by 50%, and the improvement effect of safety and reliability is remarkable. In addition, while the present application improves the heat dissipation speed of the furnace, it also significantly reduces the weight of the furnace wall, which can be reduced by 40% to 60% compared with traditional furnaces, making it more suitable for furnace movement and having better effects in some movable graphitization production industrial scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The inclusion of the drawings is to provide a further understanding of the present application. They are incorporated and constitute a part of the present application. The drawings illustrate embodiments of the present application and, together with this specification, serve to explain the principles of the present application. In the drawings:

[0026] Figure 1 is a schematic structural diagram of a high-temperature resistant special-shaped brick in a plane along the x-direction and y-direction according to an embodiment of the present application;

[0027] Figure 2 is a schematic structural diagram of a high-temperature resistant special-shaped brick in a plane along the y-direction and z-direction according to an embodiment of the present application;

[0028] Figure 3 is a schematic structural diagram of a high-temperature resistant special-shaped brick in a plane along the x-direction and y-direction according to another embodiment of the present application;

[0029] Figure 4 is a schematic structural diagram of a high-temperature resistant special-shaped brick in a plane along the y-direction and z-direction according to another embodiment of the present application;

[0030] Figure 5 is as in the present application Figures 1 to 4 a schematic structural diagram of the high-temperature resistant special-shaped brick in the graphitization furnace in a plane along the x-direction and y-direction according to the embodiment;

[0031] Figure 6 is as in the present application Figures 1 to 4 a schematic structural diagram of the high-temperature resistant special-shaped brick in the graphitization furnace in a plane along the y-direction and z-direction according to the embodiment;

[0032] Figure 7 is a partial schematic diagram of a graphitization furnace according to an embodiment of the present application;

[0033] Figure 8 is a partial schematic view of another perspective of a graphitization furnace in the embodiment shown in Figure 7 this application. Detailed implementation manners

[0034] In order to more clearly illustrate the technical solutions of the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some examples or embodiments of this application. For those of ordinary skill in the art, without creative efforts, this application can also be applied to other similar scenarios based on these drawings. Unless obvious from the language context or otherwise stated, the same reference numerals in the drawings represent the same structure or operation.

[0035] As shown in this application and the claims, unless the context clearly indicates an exception, words such as "a", "an", "one" and / or "the" are not specifically singular, but may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of the clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0036] Unless otherwise specifically stated, the relative arrangements, numerical expressions and values of the components and steps described in these embodiments do not limit the scope of this application. At the same time, it should be understood that for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and devices known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the said technologies, methods and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0037] In the description of this application, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing this application and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of this application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0038] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper", etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0039] In addition, it should be noted that the use of terms such as "first", "second", etc. to limit components is merely for the convenience of differentiating the corresponding components. Without further statement, the above terms have no special meaning, and thus should not be construed as limiting the scope of protection of this application. In addition, although the terms used in this application are selected from well-known and commonly used terms, some of the terms mentioned in the specification of this application may be selected by the applicant according to his or her judgment, and their detailed meanings are described in the relevant parts of this description. In addition, it is required to understand this application not only through the actual terms used, but also through the meaning implied by each term.

[0040] It should be understood that when a component is referred to as being "on another component", "connected to another component", "coupled to another component", or "in contact with another component", it can be directly on, connected to, or coupled to, or in contact with the other component, or there may be an intervening component. In contrast, when a component is referred to as being "directly on another component", "directly connected to", "directly coupled to", or "directly in contact with" another component, there is no intervening component. Similarly, when the first component is referred to as being "electrically in contact with" or "electrically coupled to" the second component, there is an electrical path allowing current to flow between the first component and the second component. The electrical path may include capacitors, coupled inductors, and / or other components allowing current to flow, even if there is no direct contact between the conductive components.

[0041] The present application provides a high-temperature resistant special-shaped brick, which is applied to a graphitization furnace. The high-temperature resistant special-shaped brick includes: a brick body part; and at least one hollow groove formed in the brick body part. The brick body part has opposite first and second surfaces in the width direction, and the hollow groove communicates with the first surface, where the first surface is close to the outer surface of the graphitization furnace; the brick body part has opposite third and fourth surfaces in the thickness direction, and the brick body part has a clamping part and a clamping groove part on the third surface and the fourth surface respectively, and the clamping groove part is adapted to cooperate with the clamping part. In the embodiments of the present application with reference to Figures 1 to 4 two different types of high-temperature resistant special-shaped bricks are respectively proposed. Therefore, different names are used in the following description for distinction. For example, the high-temperature resistant special-shaped brick is specifically the first high-temperature resistant special-shaped brick and the second high-temperature resistant special-shaped brick, the brick body part is specifically the first brick body part and the second brick body part, the hollow groove is specifically the first hollow groove and the second hollow groove, and the first surface, the second surface, the third surface, and the fourth surface are respectively the first surface of the first-type brick, the first surface of the second-type brick, the second surface of the first-type brick, the second surface of the second-type brick, the third surface of the first-type brick, the third surface of the second-type brick, the fourth surface of the first-type brick, and the fourth surface of the second-type brick.

[0042] Figure 1 And Figure 2 shows the first type of the high-temperature resistant special-shaped brick proposed in the present application, that is, the first high-temperature resistant special-shaped brick 10. Figure 1 is a schematic view of the front view angle of the first high-temperature resistant special-shaped brick 10. Figure 2 is a schematic view of the side view angle of the first high-temperature resistant special-shaped brick 10. Figure 1 And Figure 2 respectively mark the length direction x direction, the thickness direction z direction, and the width direction y direction of the first high-temperature resistant special-shaped brick 10. The first high-temperature resistant special-shaped brick 10 is suitable for application to a graphitization furnace, and the working temperature of the furnace core of the graphitization furnace is greater than 2000 degrees Celsius. As Figure 1 shown, the first high-temperature resistant special-shaped brick 10 includes a first brick body part 11 and a first hollow groove 12, where the first hollow groove 12 is formed in the first brick body part 11. It should be noted that as Figure 1In the illustrated embodiment, the first high-temperature resistant special-shaped brick 10 is provided with two first hollow grooves 12. However, the present application is not limited thereto. In different embodiments of the present application, for the same first high-temperature resistant special-shaped brick 10, the number of the first hollow grooves 12 can be set to only 1 or greater than 2. Considering the load-bearing capacity and exhaust performance comprehensively, the number of the first hollow grooves 12 in the same first high-temperature resistant special-shaped brick 10 is preferably 1 to 3. Further, the material of the first brick body portion 11 preferably includes aluminum oxide, that is, high-aluminum (aluminum oxide-based) refractory material, so as to better achieve the effect of high temperature resistance. In the embodiment of the present application, the content of AL2O3 in the first high-temperature resistant special-shaped brick 10 is relatively high, so it is called high-aluminum brick, such as super-grade high-aluminum brick LZ80, first-grade high-aluminum brick LZ75, second-grade high-aluminum brick LZ65, and third-grade high-aluminum brick LZ55. The numbers in the codes of the above high-aluminum bricks are the contents of AL2O3. In addition to AL2O3, the other materials in the first high-temperature resistant special-shaped brick 10 are mainly silicon dioxide. Through the above ratio, the first high-temperature resistant special-shaped brick 10 of the present application can effectively achieve the effect of high temperature resistance and can be applied to the graphitization production scenario.

[0043] According to Figure 1 , the first brick body portion 11 has a first special-shaped brick first surface 101 and a first special-shaped brick second surface 102 that are opposite in the width direction y, and the first hollow groove 12 communicates with the first special-shaped brick first surface 101. When the first high-temperature resistant special-shaped brick 10 is applied to a graphitization furnace, the first special-shaped brick first surface 101 is close to the outer surface of the graphitization furnace. Further referring to Figure 2 , the first brick body portion 11 has a first special-shaped brick third surface 103 and a first special-shaped brick fourth surface 104 that are opposite in the thickness direction z. The first brick body portion 11 has a first clamping portion 1030 and a first clamping groove portion 1040 on the first special-shaped brick third surface 103 and the first special-shaped brick fourth surface 104 respectively, and the first clamping groove portion 1040 is adapted to cooperate with the first clamping portion 1030. When there are multiple first high-temperature resistant special-shaped bricks 10, adjacent first high-temperature resistant special-shaped bricks 10 can be masoned by the mutual clamping of the first clamping groove portion 1040 and the first clamping portion 1030. Compared with the direct masonry of a smooth surface, the setting of the first clamping portion 1030 and the first clamping groove portion 1040 can make the adjacent first high-temperature resistant special-shaped bricks 10 more stable after masonry.

[0044] In the present application, including Figure 1 and Figure 2 In different embodiments of the first high-temperature resistant special-shaped brick 10 shown, the first brick body portion 11 preferably has the following dimensional parameters. According to Figure 1 and Figure 2, the brick length L of the first brick body part 11 in the length direction x is 400 mm to 500 mm. The brick width W of the first brick body part 11 in the width direction y is 250 mm to 300 mm. The brick thickness T of the first brick body part 11 in the thickness direction z is 80 mm to 120 mm. The above numerical ranges comprehensively consider the structural characteristics of the first high-temperature resistant special-shaped brick 10 and the exhaust function to be achieved, and the effect is better in actual production time. Combining Figure 1 and Figure 2 , the first high-temperature resistant special-shaped brick 10 in this embodiment is integrally in the structure of a rectangular cube, and the x direction, y direction, and z direction can also be understood as three mutually perpendicular directions in a three-dimensional coordinate system. It can be understood that the numerical ranges of the above brick length L, brick width W, and brick thickness T do not necessarily need to be satisfied simultaneously. In some embodiments, only one or two of the numerical ranges can be satisfied according to different actual working conditions, and the present application does not limit this.

[0045] On this basis, referring to Figure 1 and Figure 2 , the first clamping part 1030 extends in the length direction x and the thickness direction z, and the cross-section in the plane where the width direction y and the thickness direction z are located includes a first arc segment, and the numerical range of the radius R1 of the first arc segment is 20 mm to 28 mm. Correspondingly, the first clamping groove part 1040 extends in the length direction x and the thickness direction z, and the cross-section in the plane where the width direction y and the thickness direction z are located includes a second arc segment, and the numerical range of the radius R2 of the second arc segment is 20 mm to 28 mm.

[0046] Furthermore, it should be noted that in the first high-temperature resistant special-shaped brick 10 as shown in Figure 1 and Figure 2 , both of the two first hollow grooves 12 are air vents, and the shape of the air vents in the cross-section in the plane where the width direction y and the thickness direction z are located preferably includes a U shape. However, the present application is not limited to this. In other embodiments, the U shape can also be replaced with other irregular shapes such as a rectangle or an approximately U shape, or for example, a straight-edge shape and a straight-edge shape with a chamfer, as long as it is connected to the first surface 101 of the first-type brick so that a naturally formed passage can be realized after multiple first high-temperature resistant special-shaped bricks 10 are laid, then it belongs to the spirit and scope of the present application. According to Figure 1, the first hollow groove 12 (venting groove) has a venting groove opening 120 on the first side 101 of the first-shaped brick. The opening length U1 of the venting groove opening 120 in the length direction x of the first brick body part 11 is 80 mm to 120 mm. Further preferably, the opening length U1 can also be limited to be less than or equal to 115 mm, so as to ensure the stability of the first high-temperature resistant special-shaped brick 10 on the basis of realizing the exhaust function during actual production work. During the actual production process, when multiple first high-temperature resistant special-shaped bricks 10 are arranged and masoned, the basic principle is to correspond to a grooving position according to the standard length of 230 mm, and each grooving position is provided with a first hollow groove 12. On the other hand, the opening depth U2 of the venting groove in the width direction y is less than 50% of the brick width W of the first brick body part 11.

[0047] When the graphitization furnace applies the first high-temperature resistant special-shaped brick 10 as shown in Figure 1 and Figure 2 , a passage for ventilation and exhaust can be naturally formed between adjacent first high-temperature resistant special-shaped bricks 10 through the first hollow groove 12. In the related prior art, the setting of the solid brick wall not only increases the weight of the graphitization furnace, but also cannot conduct ventilation and exhaust. When the graphitization furnace deforms due to temperature and pressure changes, etc., the solid brick wall is prone to cracking. The first high-temperature resistant special-shaped brick 10 in this application can not only achieve the characteristics of heat preservation and heat insulation through the first brick body part 11, but also realize natural exhaust ventilation through the first hollow groove 12, and such a first high-temperature resistant special-shaped brick 10 has the characteristics of light weight, and can be applied not only to traditional fixed graphitization furnaces, but also to movable graphitization furnaces. According to the verification of relevant production tests, after applying the above-mentioned first high-temperature resistant special-shaped brick 10, the possibility of the furnace wall of the graphitization furnace being damaged by high temperature is reduced by 50%, and the effect is remarkable.

[0048] On the other hand, this application proposes a graphitization furnace, including a furnace body area and a furnace wall. The furnace body area is suitable for firing the to-be-treated green body, and the furnace wall surrounds the furnace body area at least from all around and the bottom. Among them, at least a part of the furnace wall includes an exhaust furnace wall, and the exhaust furnace wall is masoned by the high-temperature resistant special-shaped bricks in any embodiment of this application, for example, as shown in Figure 1 and Figure 2The first high-temperature resistant special-shaped brick 10 shown. The hollow grooves of multiple high-temperature resistant special-shaped bricks are connected to form the furnace wall exhaust passage of the graphitization furnace. In different embodiments of the present application, the furnace wall in the graphitization furnace includes an inner wall part closer to the furnace body area and an outer wall part located outside the inner wall part. The inner wall part includes an exhaust furnace wall. Among them, the furnace wall exhaust passage is located between the outer wall part and the exhaust furnace wall. The outer wall part includes a steel structure or a brick wall structure. Among them, the steel structure includes steel support columns and steel plates, and the brick wall structure is formed by masonry of heat-resistant concrete, red bricks and / or refractory clay bricks. Specifically, when the graphitization furnace is a traditional fixed graphitization furnace, the outer wall part can adopt the above-mentioned brick wall structure, and when the graphitization furnace is a movable graphitization furnace, in order to reduce weight and facilitate movement, the outer wall part adopts the above-mentioned steel structure. By adopting the above furnace wall structure, the furnace wall of the graphitization furnace can not only withstand high temperatures but also provide sufficient support strength.

[0049] To better implement the above graphitization furnace solution, the high-temperature resistant special-shaped brick proposed in the present application can also include a second type, that is, as Figure 3 and Figure 4 shown second high-temperature resistant special-shaped brick 20. Further, Figure 1 and Figure 2 shown first high-temperature resistant special-shaped brick 10 and Figure 3 and Figure 4 shown second high-temperature resistant special-shaped brick 20 are combined with each other and applied to the graphitization furnace, and a fixed installation structure as Figure 5 and Figure 6 shown can be formed.

[0050] First refer to Figure 5 and Figure 6 , the graphitization furnace includes an outer wall part 30, and the outer wall part 30 is located on the outer side of the furnace wall. The furnace wall also includes an inner wall part on the inner side. At least a part of the inner wall part is formed by masonry of the first high-temperature resistant special-shaped brick 10 and the second high-temperature resistant special-shaped brick 20. According to Figure 6, the furnace wall exhaust passage S formed by laying the first high-temperature resistant special-shaped brick 10 and the second high-temperature resistant special-shaped brick 20 is located between the outer wall part 30 and the first brick body part 11 of the first high-temperature resistant special-shaped brick 10, and between the outer wall part 30 and the second brick body part 21 of the second high-temperature resistant special-shaped brick 20. Through this furnace wall exhaust passage S, the flue gas generated during the operation of the graphitization furnace can be effectively discharged, and natural exhaust ventilation can be achieved, reducing the upper temperature limit that the first high-temperature resistant special-shaped brick 10 and the second high-temperature resistant special-shaped brick 20 need to bear. At the same time, since the first brick body part 11 and the second brick body part 21 of the first high-temperature resistant special-shaped brick 10 and the second high-temperature resistant special-shaped brick 20 have properties such as high-temperature resistance and heat insulation, a good heat preservation effect can be achieved, the masonry cost of the graphitization furnace is low, and the safety performance is high. Other details about the second high-temperature resistant special-shaped brick 20 can also refer to the description of the first high-temperature resistant special-shaped brick 10 in the previous text, which will not be elaborated here.

[0051] Combined with Figures 3 to 6 , the graphitization furnace in this embodiment further includes a fixing pendant 40. The fixing pendant 40 includes a connecting part 41 extending along the width direction y of the second brick body part 21 of the second high-temperature resistant special-shaped brick 20, and a fixing part 42 connected to the connecting part 41 and extending along the length direction x of the second brick body part 21. In this embodiment, as shown in Figure 3 and Figure 4 ]>In the second high-temperature resistant special-shaped brick 20 shown, the second hollow groove 22 is specifically implemented as a pendant groove, and the fixing pendant 40 shown in Figure 5 and Figure 6 is suitable for being inserted into the pendant groove to fixedly connect the second high-temperature resistant special-shaped brick 20 with the outer wall part 30.

[0052] Further referring to Figure 3 and Figure 4 , the second brick body part 21 has opposite first two-brick surfaces 201 and second two-brick surfaces 202 in the width direction y. The second hollow groove 22 communicates with the first two-brick surface 201, wherein the first two-brick surface 201 is close to the outer surface of the graphitization furnace. Combined with Figure 5 and Figure 6 , the first two-brick surface 201 is close to the outer wall part 30. Further referring to Figure 4 , the second brick body part 21 has opposite third two-brick surfaces 203 and fourth two-brick surfaces 204 in the thickness direction z. The second brick body part 21 has a second clamping part 2030 and a second clamping groove part 2040 on the third two-brick surface 203 and the fourth two-brick surface 204 respectively. The second clamping groove part 2040 is suitable for cooperating with the second clamping part 2030. When there are multiple second high-temperature resistant special-shaped bricks 20, adjacent second high-temperature resistant special-shaped bricks 20 can be masoned through the mutual cooperation of the second clamping groove part 2040 and the second clamping part 2030, and the stability is higher. And in this embodiment, combined with Figure 5, adjacent to the second high-temperature resistant special-shaped brick 20 is as Figure 1 and Figure 2 shown by the first high-temperature resistant special-shaped brick 10. The two types of high-temperature resistant special-shaped bricks can be mutually matched through the clamping parts and slot parts with the same designed size to achieve masonry.

[0053] More specifically, the hanging part groove includes an extension part 221 and a cavity part 222 communicated with the extension part 221. The extension part 221 is communicated with the first surface 201 of the second-type brick of the second brick body part 21 so that the hanging part groove is communicated with the first surface 201 of the second-type brick. Combining Figure 5 and Figure 6 , the extension part 221 is adapted to accommodate the connecting part 41, and the cavity part 222 is adapted to accommodate the fixing part 42. For a clearer reference Figure 3 , the connection part where the extension part 221 is communicated with the cavity part 222 has a first aperture d1 in the length direction x. The length of the first aperture d1 in the length direction x is less than the fixing part length d2 of the fixing part 42 in the length direction x as shown in Figure 5 . Combining Figure 5 and Figure 6 shown by the views from two perspectives, the fixing part 42 of the fixing hanging part 40 has certain dimensions in both the length direction x and the thickness direction z of the second brick body part 21. That is to say, the shape of the fixing part 42 on the plane where the x direction and the z direction are located can be implemented as a rectangle, so as to improve the fixing effect.

[0054] Preferably in this embodiment, referring to Figure 5 , the end face of the fixing part 42 in the fixing hanging part 40 is adapted to contact the inner wall of the cavity part 222 in the contact area 420. Preferably in this embodiment, the inner wall of the cavity part 222 includes an arc surface in the contact area 420. In this way, it can be ensured that the fixing hanging part 40 has a good degree of freedom of movement while fixing the second high-temperature resistant special-shaped brick 20 and the outer wall part 30 to each other. When the second brick body part 21 generates deformation or position change due to temperature or pressure changes even under the high-temperature working state of the graphitization furnace, it can well adapt to the above changes to ensure better reliability and stability of the overall graphitization furnace. Preferably in this embodiment, the cross-section of the cavity part 222 in the plane where the width direction y and the length direction x are located includes a circle or an ellipse, and the cross-section of the extension part 221 in the plane where the width direction y and the thickness direction z are located includes a rectangle.

[0055] According to Figure 5 , the outer wall part 30 is arranged against the first surface 101 of the first-type brick of the first high-temperature resistant special-shaped brick 10 and the first surface 201 of the second-type brick of the second high-temperature resistant special-shaped brick 20. Among them, more clearly according to Figure 6As shown, the outer wall portion 30 is provided with fastening holes 301, and the connecting portion 41 is adapted to pass through the fastening holes 301 and the extending portion 221 simultaneously so that the second high-temperature resistant special-shaped brick 20 is fixedly connected to the outer wall portion 30 through the fixing hanging member 40. More specifically, Figure 5 A fastener 410 is also shown, which can fix the connecting portion 41 to the outer wall portion 30 after passing through the fastening holes 301 and the extending portion 221.

[0056] As described above, referring to Figure 6 , through the stacking design of the first high-temperature resistant special-shaped brick 10 and the second high-temperature resistant special-shaped brick 20, an exhaust furnace wall (i.e., the above-mentioned inner wall portion or a part of the inner wall portion) can be formed. A furnace wall exhaust passage S can be naturally formed between the exhaust furnace wall and the outer wall portion 30 through the settings of the first hollow groove 12 and the second hollow groove 22. Further preferably, referring to Figure 7 and Figure 8 , Figure 7 shows a schematic view of the graphitization furnace in the present embodiment regarding the furnace bottom area part, that is, the furnace body area 50 and the partial area below it. Figure 8 shows a partial schematic view of another perspective including the furnace body area and the furnace wall exhaust passage S around it. In the present embodiment, preferably, the graphitization furnace is further provided with an air inlet hole 302, and the air inlet hole 302 is communicated with the furnace wall exhaust passage S. As described above, the graphitization furnace can be fixed or movable, and in different embodiments, the opening position of the air inlet hole 302 may also be different. For example, Figure 7 and Figure 8 show examples of movable graphitization furnaces. According to Figure 7 and Figure 8 , the air inlet hole 302 is located below the furnace body area 50. However, the present application is not limited thereto. For a fixed graphitization furnace, the opening position of the air inlet hole 302 can be adjusted according to the actual production scenario. For example, it can be opened at the bottom position A of the outer wall portion 30 as shown in Figure 8 (the mark A in Figure 8 is only for illustration), so as to facilitate the intake of the furnace wall exhaust passage S. In actual production work, the flue gas during the operation of the graphitization furnace can enter the furnace wall exhaust passage S jointly formed by the first high-temperature resistant special-shaped brick 10 and the second high-temperature resistant special-shaped brick 20 from the air inlet hole 302 and further flow outside the furnace wall. It should be noted that Figure 7 and Figure 8 only show the reference numeral illustration of the first high-temperature resistant special-shaped brick 10, but the same position can also be replaced with, for example, Figure 3 and Figure 4The second high-temperature resistant special-shaped brick 20 shown. It can be understood that the outlet for flue gas circulation can be arranged in other areas of the furnace wall or the furnace top, and a device for flue gas recovery can be further designed, etc., so as to completely realize the flue gas recovery process of the graphitization furnace. Since these contents are not the focus of this application, they will not be elaborated here. For the relevant prior art, the bottom of the furnace body area of the traditional graphitization furnace usually has flue gas accumulation, which is prone to safety hazards. After adopting the above solution of this application, the flue gas can be discharged on the basis of light weight only by improving the brick design in the furnace wall, which not only reduces the production cost of the graphitization furnace, but also improves the reliability and safety with multiple benefits.

[0057] In this embodiment, further preferably, referring to Figure 7 , the graphitization furnace may further include a support frame 70, fixedly connected to the outside of the outer wall portion 30. Exemplarily, the support frame 70 may include a plurality of cross beams and / or a plurality of columns, where Figure 7 shows a part of the column. On this basis, Figure 7 also shows the base 60. Exemplarily, the base 60 may be a concrete structure to improve the support effect on the furnace body area 50. Through the above design, the stability of the graphitization furnace can be further improved.

[0058] The service life of the furnace wall of a graphitization furnace mainly depends on the thickness of the heat-insulating material between the furnace core and the furnace wall. When the thickness reaches a certain level, the furnace wall will not be damaged. However, as the thickness increases, the production cost and production cycle will increase significantly. The above technical solution of this application aims to improve the damage resistance of the furnace wall on the premise of minimizing the heat-insulating thickness as much as possible. In a graphitization system, the original service life of the furnace wall was 6 - 8 cycles of production. After using the high-temperature resistant special-shaped bricks of this application, there was no damage after 10 cycles of production. In actual production, the inventor of this application recorded the following measurement results during a production process: the highest temperature at the inner side of the furnace wall in the existing solution was 1190°C; after using the high-temperature resistant special-shaped bricks of this application, under the same production conditions, the highest temperature measured at the same temperature measurement point dropped to 980°C. It can be understood that for the refractory bricks used in the graphitization furnace, they are not easily damaged in a lower temperature environment. Due to too many uncertain factors in production, such as the deviation of the furnace core current causing the deviation of the furnace core temperature to form local high temperature, etc., these will all increase the probability of damaging the corresponding furnace wall. Therefore, depending on different production conditions, the above parameters do not limit the production parameters of the graphitization furnace proposed in this application. From the perspective of the heat-insulating material layer, the industry usually adopts the production method of 1000mm to 1200mm in the prior art. After applying the technical solution of this application to actual production, the production method is to use a heat-insulating material layer with a thickness of 800mm to 900mm inside the furnace wall for production. Even though the thickness of the heat-insulating material layer is reduced, the furnace wall has not shown obvious damage after multiple cycles of use. This means that the technical solution of this application can significantly reduce the production cost brought by the heat-insulating material on the basis of ensuring safe and reliable graphitization production.

[0059] On this basis, considering the above-mentioned lightweight characteristics of the high-temperature resistant special-shaped bricks, another aspect of this application also proposes a mobile graphitization production system, and this mobile graphitization production system includes the graphitization furnace of any embodiment of this application. It can be considered that, Figure 7 and Figure 8 both show partial schematic diagrams of the graphitization furnace of one of the embodiments. For the scenario of the mobile graphitization production system, after using the lightweight high-temperature resistant special-shaped bricks, the weight of the furnace wall is reduced, which can better facilitate the movement of the graphitization furnace.

[0060] The basic concepts have been described above. Obviously, for those skilled in the art, the above application disclosure is only an example and does not constitute a limitation to this application. Although not explicitly stated here, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are proposed in this application, so such modifications, improvements, and corrections still belong to the spirit and scope of the exemplary embodiments of this application.

[0061] Meanwhile, this application uses specific terms to describe the embodiments of this application. For example, "an embodiment", "one embodiment", and / or "some embodiments" mean a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that the "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more at different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application can be appropriately combined.

[0062] Similarly, it should be noted that, in order to simplify the description of this application disclosure and thus help the understanding of one or more application embodiments, in the previous description of the embodiments of this application, sometimes multiple features are grouped into one embodiment, drawing, or description thereof. However, this disclosure method does not mean that the features required by the object of this application are more than those mentioned in the claims. In fact, the features of the embodiment are less than all the features of the single embodiment disclosed above.

[0063] In some embodiments, numbers are used to describe the components and the quantity of attributes. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximate", or "substantially" in some examples. Unless otherwise stated, "about", "approximate", or "substantially" indicate that the said numbers allow a variation of ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, and these approximate values can change according to the characteristics required by individual embodiments. In some embodiments, the numerical parameters should consider the specified significant digits and adopt the method of retaining the general number of digits. Although the numerical ranges and parameters used to confirm the scope breadth in some embodiments of this application are approximate values, in specific embodiments, such numerical settings are as precise as possible within the feasible range.

[0064] Although this application has been described with reference to the current specific embodiments, those of ordinary skill in the art in this technical field should recognize that the above embodiments are only used to illustrate this application, and various equivalent changes or substitutions can be made without departing from the spirit of this application. Therefore, as long as the changes and variations of the above embodiments are within the scope of the spirit of this application, they will fall within the scope of the claims of this application.

Claims

1. A high-temperature resistant special-shaped brick, characterized in that, Applied to a graphitization furnace, the high-temperature resistant special-shaped brick includes: A brick body part; and At least one hollow groove, which is opened in the brick body part, wherein, The brick body part has opposite first and second surfaces in the width direction, and the hollow groove communicates with the first surface, wherein the first surface is close to the outer surface of the graphitization furnace; The brick body part has opposite third and fourth surfaces in the thickness direction, and the brick body part has a clamping part and a clamping groove part on the third surface and the fourth surface respectively, and the clamping groove part is adapted to cooperate with the clamping part; The hollow groove includes a ventilation groove, the ventilation groove has a ventilation groove opening on the first surface, and the shape of the ventilation groove in the cross-section along the plane where the width direction and the thickness direction are located includes a U shape. The opening depth of the ventilation groove along the width direction is less than 50% of the brick width of the brick body part. The hollow groove is used to form the furnace wall exhaust channel in the graphitization furnace.

2. The high-temperature resistant special-shaped brick according to claim 1, wherein The brick body part has the following dimensional parameters: The brick length of the brick body part along the length direction is 400 mm to 500 mm; and / or the brick width of the brick body part along the width direction is 250 mm to 300 mm; and / or the brick thickness of the brick body part along the thickness direction is 80 mm to 120 mm.

3. The high-temperature resistant special-shaped brick according to claim 2, wherein, The clamping part extends along the length direction and the thickness direction, and the clamping part includes a first arc section, and the radius range of the first arc section is 20 mm to 28 mm.

4. The high-temperature resistant special-shaped brick according to claim 2, wherein The clamping groove part extends along the length direction and the thickness direction, and the clamping groove part includes a second arc section, and the radius range of the second arc section is 20 mm to 28 mm.

5. The high-temperature resistant special-shaped brick according to claim 1, characterized in that, The opening length of the ventilation groove opening along the length direction of the brick body part is 80 mm to 120 mm.

6. The high-temperature resistant special-shaped brick according to claim 1, wherein In the high-temperature resistant special-shaped brick, the number of the hollow grooves is not more than 3.

7. The high-temperature resistant special-shaped brick according to claim 1, characterized in that, The material of the brick body part includes aluminum oxide, wherein the content of the aluminum oxide is greater than 55%.

8. A graphitization furnace, characterized in that, It includes a furnace body area and a furnace wall. The furnace body area is suitable for firing a to-be-treated blank, and the furnace wall surrounds the furnace body area at least from all around and the bottom. Among them, at least a part of the furnace wall includes an exhaust furnace wall, and the exhaust furnace wall is built by a plurality of high-temperature resistant special-shaped bricks as described in any one of claims 1 to 7. The hollow grooves of the plurality of high-temperature resistant special-shaped bricks communicate to form the furnace wall exhaust channel of the graphitization furnace.

9. The graphitization furnace according to claim 8, wherein The furnace wall includes an inner wall part closer to the furnace body area and an outer wall part located outside the inner wall part. The inner wall part includes the exhaust furnace wall. Among them, the furnace wall exhaust channel is located between the outer wall part and the exhaust furnace wall.

10. The graphitization furnace according to claim 9, characterized in that, It further includes an air inlet hole, which is opened below the furnace body area or at the bottom of the inner wall part, wherein the air inlet hole communicates with the furnace wall exhaust channel.

11. The graphitization furnace according to claim 9, wherein, It further includes a support frame, which is fixedly connected to the outside of the outer wall part, and the support frame includes a plurality of cross beams and / or a plurality of columns.

12. The graphitization furnace according to claim 9, characterized in that, The outer wall part includes a steel structure or a brick wall structure. The steel structure includes steel support columns and steel plates, and the brick wall structure is built by heat-resistant concrete, red bricks and / or refractory clay bricks.

13. The graphitization furnace according to any one of claims 9 to 12, characterized in that, It further includes a fixed hanging member, the fixed hanging member includes a connecting portion extending along the width direction of the brick body portion of the high-temperature resistant special-shaped brick and a fixing portion extending along the length direction of the brick body portion, wherein, the fixing portion is connected to the connecting portion, and among a plurality of the high-temperature resistant special-shaped bricks, at least a part of the hollow grooves include hanging member grooves, and the hanging member grooves are adapted to insert the fixed hanging member so that the high-temperature resistant special-shaped bricks are fixedly connected to the outer wall portion.

14. The graphitization furnace according to claim 13, characterized in that, The hanging member groove includes an extending portion and a cavity portion communicating with the extending portion, and the extending portion communicates with the first surface of the brick body portion so that the hanging member groove communicates with the first surface. Wherein, the extending portion is adapted to accommodate the connecting portion, the cavity portion is adapted to accommodate the fixing portion, and a connection portion where the extending portion communicates with the cavity portion has a first diameter along the length direction, and the length of the first diameter along the length direction is smaller than the length of the fixing portion of the fixing portion along the length direction.

15. The graphitization furnace according to claim 14, wherein, An end surface of the fixing portion is adapted to contact an inner wall of the cavity portion in a contact area, wherein, the inner wall includes an arc surface in the contact area.

16. The graphitization furnace according to claim 15, wherein, A cross-section of the cavity portion in a plane where the width direction and the length direction are located includes a circle or an ellipse, and a cross-section of the extending portion in a plane where the width direction and the thickness direction are located includes a rectangle.

17. The graphitization furnace according to claim 14, characterized in that, The outer wall portion is arranged on the first surface of the high-temperature resistant special-shaped brick, wherein, the outer wall portion is provided with a fastening hole, and the connecting portion is adapted to pass through the fastening hole and the extending portion simultaneously so that the high-temperature resistant special-shaped brick is fixedly connected to the outer wall portion through the fixed hanging member.

18. A movable graphitization production system, characterized in that, The movable graphitization production system includes a graphitization furnace according to any one of claims 8 to 17.

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