A live-bottom device for the production of sponge titanium

Abstract

This utility model relates to the technical field of sponge titanium production equipment, specifically a movable-bottom device for sponge titanium production. It includes a shell, inside which a movable-bottom component is disposed. The movable-bottom component has several dividing ribs that divide the interior of the shell into five spaces. The movable-bottom component has a conical structure and can be ejected entirely from the top opening of the shell. A discharge hopper is disposed at the bottom of the shell, and a discharge port is disposed at the bottom of the discharge hopper. A lifting device is disposed below the discharge port to eject the movable-bottom component from the bottom upwards through the shell. In this movable-bottom device for sponge titanium production, the dividing ribs of the movable-bottom component evenly divide the interior of the shell into five spaces. Combined with the conical structure, this ensures that the generated sponge titanium is evenly dispersed during the reaction process, effectively preventing accumulation in the center and fundamentally preventing the formation of a hard core, thus improving the quality of the sponge titanium.

Description

Technical Field

[0001] This utility model relates to the technical field of sponge titanium production equipment, and more specifically, to a movable bottom device for sponge titanium production. Background Technology

[0002] In the field of titanium sponge production, current processes face numerous challenges. Domestically, the magnesothermic method is mainly used, employing titanium tetrachloride as raw material through reduction, distillation, and crushing to produce finished titanium sponge. However, as disclosed in patent CN202492558U, during the reduction process, a hard core easily forms in the center of the titanium sponge, severely impacting its downstream applications. This phenomenon stems from uneven heat distribution during the reaction process, leading to excessive sintering of the titanium sponge in the central region.

[0003] In existing technologies, sponge titanium often undergoes sintering and self-weight compression at high temperatures during production, leading to gradual densification, shrinkage and blockage of capillaries. This makes it difficult to distill and separate volatile components such as magnesium and magnesium chloride from the product, resulting in the formation of a core and a hard core, especially towards the bottom where the titanium agglomerate becomes denser. While the solution proposed in patent CN202705436U improves some issues to a certain extent, it still cannot effectively solve the key problem of the hard core. The presence of the hard core not only reduces the quality of the sponge titanium but also increases the difficulty of subsequent processing. For example, during the crushing process, the hard core is difficult to break, easily causing overheating, oxidation, and discoloration of the product, increasing the oxygen content in waste or impurities, and seriously affecting the product's pass rate and premium grade. Utility Model Content

[0004] The purpose of this invention is to provide a live-bottom device for the production of sponge titanium, in order to solve the problem mentioned in the background art that sponge titanium often undergoes sintering and self-weight compression under high temperature conditions during the production process, which causes the product to gradually become dense, the capillaries to shrink and become blocked, making it difficult to distill and separate volatile components such as magnesium and magnesium chloride from the product, thus leading to the formation of sandwich and hard cores in the product, especially the denser the titanium agglomerate is closer to the bottom.

[0005] To achieve the above objectives, this utility model provides a retractable bottom device for the production of sponge titanium, comprising a housing, an internal retractable bottom component, a plurality of partition ribs dividing the interior of the housing into five spaces, the retractable bottom component having a conical structure, the retractable bottom component being able to be ejected entirely from the top opening of the housing, a discharge bin being provided at the bottom of the housing, a discharge port being provided at the bottom of the discharge bin, and a lifting device being provided below the discharge port to eject the retractable bottom component from the housing from bottom to top.

[0006] This design element is the core of the device's structural design. Inside the housing, a conical, movable-bottom component with dividing ribs divides the interior into specific spaces. A discharge hopper and discharge port, in conjunction with a lifting device, use mechanical force to eject the movable-bottom component from the top opening. During the production of sponge titanium, the sponge titanium produced by the reaction of titanium tetrachloride and magnesium gradually accumulates on the movable-bottom component. Due to the partitioning and conical structure of the movable-bottom component, the sponge titanium is evenly distributed within each partitioned space, preventing concentrated accumulation. After the reaction is complete, the lifting device applies an upward force from below the discharge port, ejecting the movable-bottom component carrying the sponge titanium entirely out of the housing for subsequent processing.

[0007] Preferably, the number of the dividing ribs is 3-7, and the dividing ribs are arranged in a ring at equal intervals inside the shell.

[0008] The design of setting the number of dividing prisms to 3-7 in a ring with equal spacing is based on considerations of reasonable division of the internal space of the shell and uniform distribution of sponge titanium. Within this range, it can ensure effective division of the internal space while avoiding structural complexity and impaired heat transfer and material flow due to too many prisms, or insufficient division effect due to too few prisms. The equal spacing arrangement ensures the consistency of each divided space, so that the reaction conditions of the material in each space are similar during the reaction process, thereby ensuring the uniform formation and distribution of sponge titanium.

[0009] Preferably, the height of the movable bottom component is 1 / 3 to 1 / 2 of the internal height of the housing.

[0010] The height of the retractable bottom component is set to 1 / 3 to 1 / 2 of the internal height of the shell. This setting was determined after comprehensively considering factors such as material accumulation, heat distribution, and utilization of the reaction space during the reaction process. This height range ensures sufficient space for the formation of sponge titanium on the retractable bottom component, while preventing the reaction space from becoming too cramped due to excessive height, or too low to fully utilize the separation and support functions for the sponge titanium. At this height, the heat generated by the reaction can be transferred relatively evenly in the space above and below the retractable bottom component, promoting a uniform reaction.

[0011] Preferably, during use, the internal temperature of the housing is controlled at 700-900℃ and the internal pressure is controlled at 5-35kPa.

[0012] In the production of sponge titanium, reaction temperature and pressure have a crucial impact on the reaction rate and product quality. Controlling the internal temperature of the shell at 700-900℃ and the internal pressure at 5-35kPa is determined based on the chemical reaction characteristics of sponge titanium production via the magnesothermic process. Within this temperature and pressure range, the reaction between titanium tetrachloride and magnesium can proceed at a suitable rate, ensuring a complete reaction while avoiding excessive sintering and increased energy consumption due to excessively high temperatures, or excessively slow reaction rates that affect production efficiency due to excessively low temperatures. Pressure control helps maintain the stability of the reaction system, ensuring the reaction proceeds smoothly towards the formation of sponge titanium.

[0013] Preferably, each of the partition plates is a right-angled triangle structure, with a groove on the outer bottom of the partition plate, and a horizontal clamping rod inside the groove. The outer end of the clamping rod is pressed against the inner wall of the housing, and a clamping spring is installed on the other end of the clamping rod.

[0014] This design incorporates a right-angled triangular structure for the partition plate, combined with a clamping rod and clamping spring within the bottom outer groove. This utilizes the stability of the triangular structure and the elastic clamping effect of the spring. When subjected to pressure from the deposited titanium sponge above, the right-angled triangular structure effectively distributes the force in all directions, ensuring the structural stability of the partition plate. The outer end of the clamping rod is pressed against the inner wall of the housing, while the other end is connected via a clamping spring. Under conditions of thermal expansion or material pressure, the clamping spring automatically adjusts the clamping force, ensuring the partition plate remains tightly fitted to the inner wall of the housing, preventing displacement or loosening due to thermal expansion and contraction or material impact.

[0015] Preferably, the separating prism plate comprises a three-layer structure, namely an outer layer, a middle layer, and an inner layer. The outer layer is made of a high-temperature resistant and corrosion-resistant nickel-based alloy material to resist the high-temperature and chemical corrosion environment during the production of sponge titanium. The middle layer is made of a high-strength ceramic material to enhance the structural strength and stability of the separating prism plate. The inner layer is made of a copper alloy material with good thermal conductivity, which helps to transfer heat evenly and promotes the uniform reaction and distribution of sponge titanium.

[0016] This three-layer structure design with partition plates fully utilizes the properties of different materials to adapt to the titanium sponge production environment. The outer layer uses a high-temperature and corrosion-resistant nickel-based alloy material, which can directly resist the high temperatures during the production process and the corrosion of chemicals such as titanium tetrachloride, protecting the internal structure from damage. The middle layer of high-strength ceramic material has high strength and stability, providing solid structural support for the partition plates, enabling it to withstand the weight of the accumulated titanium sponge and the pressure changes during the reaction process. The inner layer of copper alloy material has excellent thermal conductivity, which can quickly and evenly transfer the heat generated by the reaction to the entire partition plates, promoting the uniform reaction and distribution of titanium sponge on its surface and avoiding uneven reaction caused by local overheating or overcooling.

[0017] Preferably, the inner wall of the discharge hopper is provided with an anti-stick coating made of polytetrafluoroethylene, which reduces the adhesion of sponge titanium to the inner wall of the discharge hopper and facilitates the discharge operation.

[0018] This design incorporates a polytetrafluoroethylene (PTFE) anti-stick coating on the inner wall of the discharge hopper, leveraging PTFE's extremely low coefficient of surface friction and excellent chemical stability. During the discharge of the titanium sponge, the presence of the PTFE coating significantly reduces the friction between the sponge and the inner wall of the discharge hopper, making it less likely for the sponge to adhere to the inner wall. This is based on the principle that material surface properties influence material adhesion behavior; a low coefficient of friction surface is unfavorable for material adhesion, thus facilitating discharge.

[0019] Preferably, a top cover is provided at the top opening of the shell, and the top cover is sealed with the shell by a sealing ring to ensure the airtightness of the shell when the removable bottom component is not ejected, thus preventing the leakage of reactive gas.

[0020] This design incorporates a top cover at the opening of the housing, sealed with a sealing ring, utilizing the principles of sealing technology. When the retractable bottom component is not ejected, the sealing ring fills the gap between the top cover and the housing, using its elastic deformation to fill the tiny gap and prevent reactive gases from leaking out. This is based on the fundamental principle of gas sealing, using the physical properties of the sealing material to block gas leakage channels and ensure the airtightness of the reaction system.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] In this live-bottom device for producing sponge titanium, the partition prism of the live-bottom component evenly divides the interior of the shell into five spaces. Combined with the conical structure, this ensures that the generated sponge titanium is evenly dispersed during the reaction process, effectively preventing accumulation in the center and fundamentally preventing the formation of a hard core, thus improving the quality of the sponge titanium.

[0023] The partition plate adopts a unique three-layer composite structure. The outer layer is a nickel-based alloy that resists high temperature and chemical corrosion, the middle layer is a high-strength ceramic that enhances the structural strength, and the inner layer is a copper alloy that promotes uniform heat transfer. At the same time, the clamping rod and clamping spring design at the bottom of the partition plate further ensures stable operation in high temperature and high pressure environments, ensuring the continuity and reliability of the production process.

[0024] Optimized material discharge operation: The PTFE non-stick coating on the inner wall of the discharge hopper greatly reduces the adhesion of sponge titanium. Combined with the design of the lifting device to push out the entire bottom component, the material discharge is smoother and more efficient, reducing manual cleaning costs and labor intensity.

[0025] The sealing ring design at the top opening of the shell effectively prevents the leakage of reactive gases when the bottom component is not ejected, maintaining a stable reaction environment. This not only improves production safety but also reduces pollution to the surrounding environment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a top view of the structure of this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the partition prism in this utility model;

[0029] Figure 4 This is a schematic diagram of the layered structure of the partition prism in this utility model;

[0030] The meanings of the labels in the diagram are as follows:

[0031] 1. Shell; 11. Support leg; 12. Discharge bin; 121. Discharge port; 13. Top cover; 2. Removable bottom component; 21. Dividing rib plate; 211. Outer layer; 212. Middle layer; 213. Inner layer; 22. Tightening rod; 23. Tightening spring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] This utility model provides a movable bottom device for the production of sponge titanium, such as... Figure 1 , Figure 2As shown, the device includes a housing 1, inside which is a removable bottom component 2. The removable bottom component 2 has several dividing ribs 21, which divide the interior of the housing 1 into five spaces. The removable bottom component 2 has a conical structure and can be pushed out of the housing 1 as a whole through the top opening. The bottom of the housing 1 is provided with a discharge bin 12, and the bottom of the discharge bin 12 is provided with a discharge port 121. A lifting device is provided below the discharge port 121 to push the removable bottom component 2 out of the housing 1 from bottom to top.

[0034] The core structural design of this device involves a conical retractable bottom component 2 with dividing ribs 21 inside the shell 1, dividing the interior of the shell 1 into specific spaces. A discharge bin 12 and a discharge port 121 are located at the bottom. A lifting device below the discharge port 121 uses mechanical force to push the retractable bottom component 2 out from the top opening of the shell 1. During the production of sponge titanium, the sponge titanium produced by the reaction of titanium tetrachloride and magnesium accumulates on the retractable bottom component 2. The dividing ribs 21 and conical structure of the retractable bottom component 2 ensure its even distribution in each divided space, preventing concentrated accumulation. After the reaction is complete, the lifting device applies force from below the discharge port 121, pushing the retractable bottom component 2 carrying the sponge titanium out of the shell 1 as a whole, facilitating subsequent processing. This effectively solves the problem of central accumulation forming a hard core in sponge titanium production, improving product quality through uniform dispersion of the sponge titanium. The overall ejection design makes the removal of the retractable bottom component 2 and the sponge titanium more convenient and efficient, reducing the difficulty and labor intensity of manual operation, and minimizing the risk of secondary contamination or damage to the product.

[0035] In this embodiment, as Figure 1 , Figure 2 As shown, there are 3-7 partition plates 21, which are arranged in a ring at equal intervals inside the housing 1.

[0036] The number of dividing prisms 21 is set to 3-7, arranged in a ring with equal spacing inside the shell 1. This arrangement comprehensively considers the internal space division of the shell 1 and the uniform distribution of titanium sponge. This number range effectively divides the internal space while avoiding the structural complexity caused by too many prisms, which could affect heat transfer and material flow, or the poor separation effect caused by too few prisms. The equal spacing ensures that each divided space is consistent, so that the material reaction conditions in each space are similar during the reaction, ensuring the uniform generation and distribution of titanium sponge. This further optimizes the dispersion effect of titanium sponge in the shell 1, making the reaction more uniform and stable, and improving the consistency and stability of product quality. The appropriate number and arrangement of dividing prisms 21 enhance the structural strength of the live bottom component 2, making it less prone to deformation and damage when subjected to the weight of titanium sponge and high temperature and pressure environments, thus extending the service life of the device.

[0037] Specifically, such as Figure 1 , Figure 2 As shown, the height of the removable bottom component 2 is 1 / 3 to 1 / 2 of the internal height of the housing 1.

[0038] The height of the movable bottom component 2 is set to 1 / 3 to 1 / 2 of the internal height of the shell 1, taking into account material accumulation, heat distribution, and utilization of reaction space during the reaction. This height ensures that the movable bottom component 2 has sufficient space to accumulate sponge titanium, while avoiding excessive height that could compress the reaction space and affect the reaction, or excessive height that would prevent it from fully exerting its separating and supporting functions. At this height, the heat of the reaction can be evenly transferred in the vertical space of the movable bottom component 2, promoting uniform reaction. It provides suitable accumulation space for the sponge titanium reaction, which is conducive to increasing yield. A reasonable height promotes the rational distribution of heat and materials within the reaction space, improves reaction efficiency, reduces reaction anomalies caused by unreasonable space, and thus improves product quality.

[0039] Furthermore, during use, the internal temperature of the housing 1 is controlled at 700-900℃, and the internal pressure is controlled at 5-35kPa.

[0040] In the production of sponge titanium, reaction temperature and pressure are crucial to the reaction rate and product quality. Controlling the internal temperature of shell 1 at 700-900℃ and the pressure at 5-35kPa is determined based on the chemical reaction characteristics of sponge titanium production via the magnesothermic process. Within this temperature and pressure range, the reaction rate between titanium tetrachloride and magnesium is suitable, ensuring a complete reaction while avoiding excessively high temperatures leading to severe product sintering and increased energy consumption, or excessively low temperatures causing a slow reaction rate that affects production efficiency. Pressure control helps maintain the stability of the reaction system, ensuring the reaction proceeds smoothly towards the formation of sponge titanium. Precise temperature and pressure control creates stable and suitable reaction conditions for sponge titanium production, effectively improving reaction conversion rate and selectivity, resulting in higher quality sponge titanium, reduced impurity content, and increased product qualification rate and premium grade rate. Stable reaction conditions also help extend the service life of the equipment and reduce equipment maintenance costs.

[0041] Furthermore, such as Figure 3 As shown, each partition plate 21 is a right-angled triangle structure. A groove is provided on the outer bottom of the partition plate 21. A horizontal clamping rod 22 is provided in the groove. The outer end of the clamping rod 22 is clamped against the inner wall of the housing 1. A clamping spring 23 is installed on the other end of the clamping rod 22.

[0042] The partition plate 21 adopts a right-angled triangular structure. A horizontal clamping rod 22 is installed in the groove on the outer side of the bottom. The outer end of the clamping rod 22 is clamped to the inner wall of the shell 1, and the other end is connected to the clamping spring 23. The stability of the triangular structure and the elastic clamping effect of the spring are utilized. When subjected to the pressure of the accumulated titanium sponge, the right-angled triangular structure can effectively disperse the force, ensuring the structural stability of the partition plate 21. When the device is subjected to thermal expansion or material pressure, the clamping spring 23 automatically adjusts the clamping force, so that the partition plate 21 is always tightly attached to the inner wall of the shell 1, preventing the partition plate 21 from shifting or loosening due to thermal expansion and contraction or material impact. This enhances the stability and reliability of the partition plate 21 under high temperature, high pressure and material action environments, ensuring its continuous and effective separation of the space inside the shell 1 and ensuring the uniform distribution of titanium sponge. The automatic adjustment function of the clamping spring 23 reduces the impact of thermal expansion and contraction on the position and structure of the partition plate 21, reduces the frequency of equipment maintenance and adjustment, and improves the continuity and stability of the production process.

[0043] Furthermore, such as Figure 4 As shown, the partition plate 21 comprises a three-layer structure: an outer layer 211, a middle layer 212, and an inner layer 213. The outer layer 211 is made of a high-temperature and corrosion-resistant nickel-based alloy material to resist the high-temperature and chemical corrosion environment during the production of sponge titanium. The middle layer 212 is made of a high-strength ceramic material to enhance the structural strength and stability of the partition plate. The inner layer 213 is made of a copper alloy material with good thermal conductivity, which helps to transfer heat evenly and promotes the uniform reaction and distribution of sponge titanium.

[0044] The three-layer structure of the separator prism plate 21 consists of three layers. The outer layer 211 is made of a high-temperature and corrosion-resistant nickel-based alloy material, which can resist the high temperatures and corrosion from chemicals such as titanium tetrachloride during production, protecting the internal structure. The middle layer 212 is made of a high-strength ceramic material, providing a solid structural support for the separator prism plate 21, enabling it to withstand the weight of the accumulated titanium sponge and changes in reaction pressure. The inner layer 213 is made of a copper alloy material with good thermal conductivity, which can quickly and evenly transfer reaction heat to the entire separator prism plate 21, promoting the uniform reaction and distribution of titanium sponge on its surface and avoiding uneven reaction caused by local overheating or undercooling. This significantly improves the overall performance of the separator prism plate 21, enabling it to work stably for a long time in harsh production environments. The synergistic effect of the three layers ensures the structural integrity and stability of the separator prism plate 21, while also promoting uniform heat transfer and reaction, which is of great significance for improving the quality and production efficiency of titanium sponge products. It also extends the service life of the separator prism plate 21 and reduces equipment replacement and maintenance costs.

[0045] Furthermore, the inner wall of the discharge bin 12 is provided with an anti-stick coating made of polytetrafluoroethylene, which reduces the adhesion of sponge titanium to the inner wall of the discharge bin 12 and facilitates the discharge operation.

[0046] The inner wall of the discharge hopper 12 is coated with a polytetrafluoroethylene (PTFE) anti-stick coating, utilizing the extremely low surface friction coefficient and good chemical stability of PTFE. During the discharge of titanium sponge, this coating significantly reduces the friction between the titanium sponge and the inner wall of the discharge hopper 12. Based on the principle that a low-friction surface is unfavorable for material adhesion, this facilitates discharge. It significantly improves the smoothness of the discharge operation, reducing problems such as poor discharge or even blockage caused by titanium sponge adhesion. This increases discharge efficiency, reduces the frequency and labor intensity of manual cleaning of the inner wall of the discharge hopper 12, minimizes damage to the inner wall during cleaning, and extends the service life of the discharge hopper 12.

[0047] Furthermore, such as Figure 1 As shown, a top cover 13 is provided at the top opening of the housing 1. The top cover 13 is sealed with the housing 1 by a sealing ring, which ensures the sealing of the inside of the housing 1 when the removable bottom component 2 is not ejected, and prevents the leakage of reaction gas.

[0048] A top cover 13 is provided at the top opening of the shell 1, which is sealed by a sealing ring, utilizing the principle of sealing technology. When the retractable bottom component 2 is not ejected, the sealing ring fills the gap between the top cover 13 and the shell 1, using elastic deformation to fill tiny gaps, blocking gas leakage channels based on the principle of gas sealing, and ensuring the airtightness of the reaction system. This effectively prevents the leakage of reaction gases and maintains a stable reaction environment inside the shell 1. It avoids changes in reaction conditions due to gas leakage, such as pressure fluctuations and changes in reactant concentration, ensuring the normal operation of sponge titanium production and improving product quality stability. At the same time, it ensures the safety of the production environment and reduces potential hazards to operators and the surrounding environment.

[0049] In the use of this novel movable-bottom device for sponge titanium production, before the sponge titanium production operation, the top cover 13 is first sealed to the top opening of the housing 1 with a sealing ring to ensure that the inside of the housing 1 is sealed, preventing the leakage of reaction gases and creating a stable environment for subsequent reactions. At the same time, the movable-bottom component 2 is lowered to a suitable position at the bottom of the housing 1 using a lifting device, ready to receive the material reaction.

[0050] Once the reduction furnace temperature reaches the set 700-900℃, the titanium tetrachloride feeding system is activated. Titanium tetrachloride enters the shell 1 and rapidly vaporizes, reacting chemically with molten magnesium. At this point, the partition plates 21 on the movable bottom component 2 play a crucial role, dividing the interior of the shell 1 into five spaces. Combined with the conical structure of the movable bottom component 2, this ensures that the generated sponge titanium is evenly dispersed within these five spaces, preventing accumulation in the center of the shell 1 and thus preventing the formation of a hard core. The three-layer structure of the partition plates 21—outer layer 211 nickel-based alloy to resist high-temperature corrosion, middle layer 212 high-strength ceramic reinforcement, and inner layer 213 copper alloy to promote thermal conductivity—works synergistically to ensure stable operation under high-temperature and chemically corrosive environments and guarantee uniform reaction.

[0051] Throughout the reaction process, the internal pressure of the shell 1 is precisely controlled between 5 and 35 kPa to ensure the stability of the reaction system and promote the smooth progress of the reaction towards the formation of sponge titanium. Simultaneously, the right-angled triangular structure of the partition plate 21, along with the clamping rod 22 and clamping spring 23 within the bottom outer groove, maintain a tight fit between the partition plate 21 and the inner wall of the shell 1 under the pressure of sponge titanium accumulation and to cope with thermal expansion and contraction of the device. This ensures the structural stability of the movable bottom component 2 and guarantees the continuous and uniform distribution of sponge titanium.

[0052] After the reaction is complete, the lifting device located below the discharge port 121 is activated. The lifting device applies mechanical force upward, pushing the movable bottom component 2 carrying the sponge titanium out from the bottom of the shell 1 along the top opening. Because the inner wall of the discharge bin 12 is coated with a polytetrafluoroethylene anti-stick coating, the adhesion between the sponge titanium and the inner wall of the discharge bin 12 is greatly reduced, allowing the sponge titanium to be smoothly pushed out with the movable bottom component 2. Subsequently, the sponge titanium can be processed. The entire discharge process is efficient and convenient.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A live-bottom device for producing sponge titanium, comprising a housing (1), characterized in that: The shell (1) is provided with a removable bottom component (2) inside. The removable bottom component (2) has several partition plates (21). The partition plates (21) divide the interior of the shell (1) into five spaces. The removable bottom component (2) has a conical structure. The removable bottom component (2) can be pushed out of the shell (1) as a whole through the top opening. The bottom of the shell (1) is provided with a discharge bin (12). The bottom of the discharge bin (12) is provided with a discharge port (121). A lifting device is provided below the discharge port (121) so that the removable bottom component (2) can be pushed out of the shell (1) from bottom to top.

2. The movable bottom device for producing sponge titanium according to claim 1, characterized in that: The number of the dividing prisms (21) is 3-7, and the dividing prisms (21) are arranged in a ring at equal intervals inside the shell (1).

3. The movable bottom device for producing sponge titanium according to claim 1, characterized in that: The height of the movable bottom component (2) is 1 / 3 to 1 / 2 of the internal height of the shell (1).

4. The movable bottom device for producing sponge titanium according to claim 1, characterized in that: During use, the internal temperature of the housing (1) is controlled at 700-900℃ and the internal pressure is controlled at 5-35kPa.

5. The movable bottom device for producing sponge titanium according to claim 1, characterized in that: Each of the partition plates (21) is a right-angled triangle structure. A groove is provided on the outer bottom of the partition plate (21). A horizontal clamping rod (22) is provided in the groove. The outer end of the clamping rod (22) is clamped against the inner wall of the housing (1). A clamping spring (23) is installed on the other end of the clamping rod (22).

6. The movable bottom device for producing sponge titanium according to claim 1, characterized in that: The separating prism plate (21) comprises a three-layer structure, namely an outer layer (211), a middle layer (212), and an inner layer (213). The outer layer (211) is made of a high-temperature resistant and corrosion-resistant nickel-based alloy material to resist the high temperature and chemical corrosion environment in the production process of sponge titanium. The middle layer (212) is made of a high-strength ceramic material to enhance the structural strength and stability of the separating prism plate. The inner layer (213) is made of a copper alloy material with good thermal conductivity, which helps to transfer heat evenly and promotes the uniform reaction and distribution of sponge titanium.

7. The movable bottom device for producing sponge titanium according to claim 1, characterized in that: The inner wall of the discharge bin (12) is provided with an anti-stick coating made of polytetrafluoroethylene, which reduces the adhesion of sponge titanium to the inner wall of the discharge bin (12) and facilitates the discharge operation.

8. The movable bottom device for producing sponge titanium according to claim 1, characterized in that: The top opening of the shell (1) is provided with a top cover (13), and the top cover (13) and the shell (1) are sealed with a sealing ring to ensure the sealing of the inside of the shell (1) when the bottom component (2) is not ejected, so as to prevent the leakage of reaction gas.

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