Reduction device for reducing chromium carbide into metal chromium

Abstract

The invention relates to the technical field of chromium carbide reduction equipment, in particular to a reduction device for reducing chromium carbide into metal chromium, which comprises a reduction tank body, a heat dissipation mechanism, a stirring mechanism and a heating mechanism. The partition plate is arranged in the reduction tank body to divide the reduction tank body into the reduction cavity and the heat dissipation cavity, the reduction cavity is used for reduction of chromium carbide, the heat dissipation mechanism is arranged in the heat dissipation cavity, and after metal chromium is reduced, the driving part drives the plugging cover to move so as to open or close the discharging port; according to the scheme, it can be better guaranteed that after metal chromium passes through the discharging opening, the good heat dissipation effect is achieved through the heat dissipation structural part arranged in the heat dissipation cavity in the discharging process, and heat dissipation can be conducted rapidly while discharging is conducted. And the high temperature for reducing the metal chromium can be achieved at a relatively short temperature in the subsequent process of reducing the metal chromium from the chromium carbide in the reduction tank body, so that the loss of a heat source is avoided, and the reduction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal material recycling, in particular to a reduction device for reducing metallic chromium from chromium carbide. Background Art

[0002] With the continuous development of industrialization, metallic chromium, as an important industrial metal, is widely used in the manufacture of stainless steel, heat-resistant alloys, cemented carbide, coating materials and other fields. Especially in high-temperature and high-hardness application environments, the demand for metallic chromium is increasing, and the requirements for its production efficiency and quality are increasing. Among them, chromium carbide, as a metal material with excellent wear resistance and high-temperature corrosion resistance, has been widely used in the manufacture of wear-resistant coatings, cutting tools, nozzles and other components. However, the current chromium carbide used for metal materials is generally recycled by reduction. The traditional reduction method is to place the chromium carbide in a reduction device and reduce it in a high-temperature vacuum environment. After the reduction is completed, in order to prevent the reduced metallic chromium from reacting with oxygen in the external environment under high temperature conditions, the existing reduction device needs to be cooled for a long time to gradually reduce the temperature in the furnace, thereby reducing the temperature of the metallic chromium. However, the next time the reduction reaction is carried out, it needs to be reheated, which greatly increases the energy consumption of the heating equipment and the process time. Summary of the Invention

[0003] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a reduction device for reducing metallic chromium with chromium carbide, which solves the technical problem that reheating is required when the reduction reaction is performed next time, which greatly increases the energy consumption of the heating equipment and the process time.

[0004] In order to achieve the above objectives, the main technical solutions adopted by the present invention include:

[0005] The embodiment of the present invention provides a reduction device for reducing metallic chromium from chromium carbide, comprising a reduction tank, a heat dissipation mechanism, a stirring mechanism, and a heating mechanism;

[0006] The inner cavity of the reduction tank is provided with a partition, which divides the reduction tank into a reduction chamber located at the top and a heat dissipation chamber located at the bottom. The heat dissipation mechanism is arranged in the heat dissipation chamber. The bottom of the partition is provided with a discharge port connected to the heat dissipation chamber.

[0007] The heat dissipation mechanism includes a blocking cover, a driving member and a heat dissipation structural member;

[0008] The blocking cover is used to block the discharge port to isolate the reduction chamber from the heat dissipation chamber, and the inner cavity of the heat dissipation chamber is fixedly installed with the driving component and the heat dissipation structure;

[0009] The driving member is used to drive the blocking cover to move so as to open or close the discharge port;

[0010] The heat dissipation structure is fixedly mounted on the driving member, and the heat dissipation structure has a spiral channel, and the spiral channel is used to receive the reduced metal chromium;

[0011] The stirring structure is located in the reduction chamber and is used to stir the chromium carbide to be reduced;

[0012] The heating mechanism is flatly arranged on the inner wall of the reduction chamber and is used for heating the reduction chamber.

[0013] Optionally, a material discharge mechanism is further included, which is located at the bottom of the heat dissipation chamber and is used to receive the metal chromium after heat dissipation.

[0014] Optionally, the blanking mechanism includes a blanking shell and a receiving structure;

[0015] The bottom of the reduction tank is open, the open is communicated with the heat dissipation chamber, the unloading shell covers the open, and the receiving structure is located in the unloading shell.

[0016] Optionally, the receiving structure includes a sliding plate, a vertical plate and an inclined plate;

[0017] The sliding plate is located at the bottom of the blanking shell and can slide relative to the blanking shell, and a plurality of vertical heat dissipation fins are provided on the sliding plate;

[0018] The vertical plate is installed on the sliding plate, and the inclined plate is fixedly installed on the top of the vertical plate. The inclination angle of the inclined plate is 20°-45°. A dispersion component is provided on the inclined plate, and the dispersion component has multiple triangular pyramid structures arranged in a matrix.

[0019] Optionally, a side wall of the discharge shell is provided with a discharge opening, and the discharge opening is sealed with a discharge cover.

[0020] Optionally, the driving member includes a sleeve, a driving motor, a lifting nut and a support rod;

[0021] The heat dissipation structure is fixedly mounted on the sleeve, and the sleeve is arranged in the heat dissipation chamber. The driving motor is mounted on the inner wall of the reduction tank body, and the output end of the driving motor is fixedly connected to a rotating screw, and the external thread of the rotating screw is connected to the lifting nut, and the lifting nut is fixedly connected to the sleeve. One end of the support rod is arranged on a side of the inner side wall of the sleeve close to the discharge port, and the support rod is inclined compared to the sleeve. The other end of the support rod is hinged to the bottom of the blocking cover, and the rotation of the driving motor drives the lifting nut to rise and fall along the axial direction of the rotating screw, drives the sleeve to rise and fall, and then drives the support rod to rise and fall, so that the blocking cover is respectively located in the first position and the second position;

[0022] When the blocking cover is located at the first position, the blocking cover blocks the discharge port. When the blocking cover is located at the second position, the support rod drives the blocking cover toward the side close to the center of the partition downward to open the discharge port.

[0023] Optionally, a plurality of inclined fins are provided along the inner side wall of the spiral channel.

[0024] Optionally, the stirring mechanism includes a support frame fixedly connected to the middle of the upper surface of the reduction tank body, the upper surface of the support frame is fixedly connected to a stirring motor, the output end of the stirring motor passes through the support frame to the inner wall of the reduction tank body and is fixedly connected to a stirring shaft, a plurality of stirring blades are fixedly connected to the stirring shaft, and a plurality of sweeping scrapers are fixedly connected to the bottom end of the stirring shaft.

[0025] Optionally, a heat exchange mechanism is also included;

[0026] The heat exchange mechanism is sleeved on the outer wall of the reduction tank body, and the heat exchange mechanism can reduce the heat of the reduction tank body and store it.

[0027] Optionally, the heat exchange mechanism includes a square wave shaped heat exchange tube, the heat exchange tube surrounds the reduction tank, and the heat exchange tube has a water inlet and a water outlet;

[0028] The water inlet is connected to the external cooling tank, and a first control valve for controlling the water inlet switch is provided at the water inlet, and a second control valve for controlling the water outlet switch is provided at the water outlet. A temperature sensor is provided between the reduction tank body and the heat exchange tube, and the temperature sensor, the first control valve and the second control valve are all electrically connected to the controller.

[0029] The beneficial effects of the present invention are as follows: a reduction device for reducing metallic chromium from chromium carbide of the present invention divides the reduction tank body into a reduction chamber and a heat dissipation chamber by arranging a partition in the reduction tank body, wherein the reduction chamber is used for reducing chromium carbide, and a heat dissipation mechanism is arranged in the heat dissipation chamber. After the metallic chromium is reduced, a driving member drives the blocking cover to move to open or close the discharge port. This solution can better ensure that after the metallic chromium passes through the discharge port, a good heat dissipation effect is achieved through the heat dissipation structural member arranged in the heat dissipation chamber during the discharge process, and the heat can be quickly dissipated while the material is discharged. That is, there is no need to cool the reduction tank body to a certain temperature. The driving member is used to drive the sealing cover to open, and then the reduced metallic chromium is lowered. After the metallic chromium in the reduction chamber is completely discharged, the sealing cover is pushed upward to block the discharge port. At this time, the temperature in the reduction chamber is still at a relatively high temperature. In other words, in the subsequent process of the next round of chromium carbide reduction of metallic chromium in the reduction tank body, the high temperature for reducing metallic chromium can be reached in a shorter time, thereby avoiding the loss of heat source and improving the reduction efficiency. This will solve the problem of long-term cooling and cooling of the existing reduction device. However, reheating is required when the reduction reaction is carried out next time, which greatly increases the energy consumption of the heating equipment and the technical problem of the process time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the overall structure of the reduction device for reducing metallic chromium with chromium carbide according to the present invention (heat exchange mechanism is not shown);

[0031] Figure 2 for Figure 1 Schematic diagram of the cross-section structure at AA in the middle;

[0032] Figure 3 for Figure 2 A schematic diagram of the top view of the central connecting structural member;

[0033] Figure 4 for Figure 1 Schematic diagram of the structure of the heat exchange mechanism arranged in the middle and outside (the unloading mechanism is not shown);

[0034] Figure 5 This is a partial structural schematic diagram of Example 2 of a feeding mechanism of a reduction device for reducing metallic chromium with chromium carbide according to the present invention;

[0035] Figure 6 for Figure 5 Transverse cross-sectional view (state 1);

[0036] Figure 7 for Figure 5 Transverse cross-sectional view (state 2);

[0037] Figure 8Schematic diagram of the structure of the inclined plate in the feeding structure of the reduction device for reducing metallic chromium from chromium carbide according to the present invention (state 1);

[0038] Figure 9 for Figure 8 A schematic diagram of the enlarged structure of the details at the circled “B”;

[0039] Figure 10 This is a structural schematic diagram of the inclined plate in the material discharge structure of the reduction device for reducing metallic chromium from chromium carbide according to the present invention (state 2).

[0040] Description of Reference Numerals

[0041] 1. Reduction tank; 2. Heat dissipation mechanism; 21. Sealing cover; 22. Driving element; 221. Sleeve; 222. Driving motor; 223. Lifting nut; 224. Support rod; 225. Rotating screw; 23. Heat dissipation structure; 3. Stirring mechanism; 31. Support frame; 32. Stirring motor; 33. Stirring shaft; 34. Stirring blade; 35. Sweeping scraper; 4. Heating mechanism; 5. Partition; 6. Reduction chamber; 7. Heat dissipation chamber; 8. Discharge port; 9. Unloading mechanism; 91. Unloading Shell; 911, discharge port; 912, discharge cover; 92, receiving structure; 921, sliding plate; 922, vertical plate; 923, inclined plate; 9231, bottom plate; 9232, top plate; 9233, transmission rod; 9234, rack; 9235, balance wheel; 9236, ratchet; 9237, groove; 9238, connecting rod; 9239, spring; 924, triangular pyramid structure; 925, stop block; 922', adjustment baffle; 10, inclined fin; 11, heat exchange tube. DETAILED DESCRIPTION

[0042] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0043] Example 1:

[0044] See also Figure 1-Figure 4As shown, an embodiment of the present invention proposes a reduction device for reducing metallic chromium from chromium carbide, comprising a reduction tank body 1, a heat dissipation mechanism 2, a stirring mechanism 3, and a heating mechanism 4. The inner cavity of the reduction tank body 1 is provided with a partition 5, which divides the reduction tank body 1 into a reduction chamber 6 located at the top and a heat dissipation chamber 7 located at the bottom. The heat dissipation mechanism 2 is arranged in the heat dissipation chamber 7, and a discharge port 8 connected to the heat dissipation chamber 7 is provided at the bottom of the partition 5. The heat dissipation mechanism 2 includes a blocking cover 21, a driving member 22, and a heat dissipation structure 23. The blocking cover 21 is used to block the discharge port 8 to isolate the reduction chamber 6 from the heat dissipation chamber 7. The inner cavity of the heat dissipation chamber 7 is fixedly installed with a driving member 22 and a heat dissipation structure 23. The driving member 22 is used to drive the blocking cover 21 to move to open or close the discharge port 8. The heat dissipation structure 23 is fixedly installed on the driving member 22. The heat dissipation structure 23 has a spiral channel, which is used to receive the reduced metallic chromium. The stirring structure is located in the reduction chamber 6 and is used to stir the chromium carbide to be reduced. The heating mechanism 4 is flatly arranged on the inner wall of the reduction chamber 6 and is used to heat the reduction chamber 6.

[0045] In this embodiment, a reduction device for reducing metallic chromium from chromium carbide is provided. A partition 5 is provided in the reduction tank body 1 to divide the reduction tank body 1 into a reduction chamber 6 and a heat dissipation chamber 7. The reduction chamber 6 is used for reducing chromium carbide, and a heat dissipation mechanism 2 is provided in the heat dissipation chamber 7. After the metallic chromium is reduced, the driving member 22 drives the blocking cover 21 to move to open or close the discharge port 8. This solution can better ensure that after the metallic chromium passes through the discharge port 8, the heat dissipation structure 23 provided in the heat dissipation chamber 7 has a good heat dissipation effect during the discharge process, and can quickly dissipate heat while discharging. That is, there is no need to cool the reduction tank body 1 to a certain temperature. The driving member 22 is used to drive the blocking cover 21 to open, and then the reduced metallic chromium is lowered. After the metallic chromium in the reduction chamber 6 is completely discharged, the blocking cover 21 is pushed upward to block the discharge port 8. At this time, the temperature in the reduction chamber 6 is still at a relatively high temperature. That is to say, in the subsequent process of the next round of chromium carbide reduction of metallic chromium in the reduction tank body 1, the high temperature for reducing metallic chromium can be reached in a relatively short time, thereby avoiding the loss of heat source and improving the reduction efficiency. This solves the problem of long-term cooling and cooling of the existing reduction device. However, reheating is required when the reduction reaction is carried out next time, which greatly increases the energy consumption of the heating equipment and the technical problem of the process time.

[0046] A scraper structure is provided along the inner wall of the spiral channel. The scraper structure includes a chute provided downward along the inner wall of the spiral channel. A plurality of balls are provided in the chute. The plurality of balls are pressed against each other and lubricated by lubricating oil. When one of the balls is moved, the other balls will rotate to clear the metal chromium in the spiral channel, effectively preventing the metal chromium from being blocked in the spiral channel, so that the material can be unloaded smoothly.

[0047] In addition, it should be noted that one of the balls is in contact with the active ball, and manually turning the active ball can drive multiple balls in the chute to roll in one direction, so as to achieve smooth discharge of metal chromium.

[0048] Furthermore, it also includes a feeding mechanism 9, which is located at the bottom of the heat dissipation chamber 7 and is used to receive the metal chromium after heat dissipation.

[0049] Furthermore, the discharge mechanism 9 includes a discharge housing 91 and a receiving structure 92. The bottom of the reduction tank 1 is open, connected to the heat dissipation chamber 7. The discharge housing 91 covers the opening, and the receiving structure 92 is located within the discharge housing 91. The discharge mechanism 9 is also disposed below the heat dissipation chamber 7. This arrangement further enhances the heat dissipation of the reduced chromium metal, ensuring that the temperature of the chromium metal meets the discharge temperature, preventing the metal metal from overheating and reacting with external oxygen, thereby ensuring the stability of the chromium metal and improving its quality.

[0050] Furthermore, the receiving structure 92 includes a sliding plate 921, a vertical plate 922, and an inclined plate 923. The sliding plate 921 is located at the bottom of the unloading housing 91 and can slide relative to the unloading housing 91. It is equipped with multiple vertical heat dissipation fins. When the unloading cover 912 of the unloading housing 91 is opened, the sliding plate 921 can be pulled outward, facilitating the unloading of the metal chromium and the cleaning and maintenance of the sliding plate 921. The array of vertical heat dissipation fins effectively dissipates the metal chromium. The vertical plate 922 is mounted on top of the sliding plate 921. The inclined plate 923 is fixedly mounted on top of the vertical plate 922. The inclined plate 923 has an inclination angle of 20° and is equipped with a dispersion assembly composed of multiple triangular pyramid structures 924 arranged in a matrix. This assembly can receive the metal chromium dissipated by the heat dissipation structure 23 and effectively disperse it. That is, the metal chromium passing through the inclined plate 923 can be dispersed downward in three directions from the top of the triangular pyramid.

[0051] Furthermore, a discharge port 911 is provided on the side wall of the discharge housing 91, and a discharge cover 912 is provided to seal the discharge port 911, thereby ensuring the sealing of the reduction tank body 1.

[0052] Furthermore, the driving member 22 includes a sleeve 221, a driving motor 222, a lifting nut 223 and a support rod 224. The heat dissipation structure 23 is fixedly mounted on the sleeve 221, the sleeve 221 is arranged in the heat dissipation chamber 7, the driving motor 222 is mounted on the inner wall of the reduction tank body 1, the output end of the driving motor 222 is fixedly connected to the rotating screw 225, the external thread of the rotating screw 225 is connected to the lifting nut 223, the lifting nut 223 is fixedly connected to the sleeve 221, one end of the support rod 224 is arranged on the side of the inner side wall of the sleeve 221 near the discharge port 8, the support rod 224 is inclined relative to the sleeve 221, and the other end of the support rod 224 is hinged to the bottom of the blocking cover 21. The rotation of the driving motor 222 drives the lifting nut 223 to rise and fall along the axial direction of the rotating screw 225, drives the sleeve 221 to rise and fall, and then drives the support rod 224 to rise and fall, so that the blocking cover 21 is respectively located in the first position and the second position. When the blocking cover 21 is in the first position, the blocking cover 21 blocks the discharge port 8. When the blocking cover 21 is in the second position, the support rod 224 drives the blocking cover 21 toward the center of the partition 5, thereby opening the discharge port 8. This driving method can conveniently operate the opening and closing of the blocking cover 21. In addition, the driving motor 222 can control the weight of the heat dissipation structure 23, the sleeve 221, and the metal chromium flowing into the spiral channel of the heat dissipation structure 23.

[0053] Furthermore, a plurality of inclined fins 10 are provided along the inner side wall of the spiral channel to achieve a better heat dissipation effect of the metal chromium.

[0054] Furthermore, the stirring mechanism 3 includes a support frame 31 fixedly connected to the middle portion of the upper surface of the reduction tank 1. A stirring motor 32 is fixedly connected to the upper surface of the support frame 31. The output end of the stirring motor 32 passes through the support frame 31 to the inner wall of the reduction tank 1 and is fixedly connected to a stirring shaft 33. A plurality of stirring blades 34 are fixedly connected to the stirring shaft 33, and a plurality of sweeping scrapers 35 are fixedly connected to the bottom end of the stirring shaft 33. The specific structure of the stirring mechanism 3 enables sufficient reduction of chromium carbide, resulting in more efficient production of metallic chromium.

[0055] Furthermore, it also includes a heat exchange mechanism. The heat exchange mechanism is sleeved on the outer wall of the reduction tank body 1, and the heat exchange mechanism can reduce the heat of the reduction tank body 1 and store or reuse it. It can quickly reduce the temperature to a critical temperature value. It should also be noted that the temperature at this time is 400°C. And the high temperature required for chromium carbide to reduce metallic chromium is above 950°C. This embodiment only requires the heat exchange mechanism to reduce the temperature to about 400°C. The remaining temperature is effectively dissipated and dispersed by the heat dissipation structure 23 and the heat sinks on the inclined plate 923 and the sliding plate 921 of the unloading mechanism 9.

[0056] Furthermore, the heat exchange mechanism includes a square wave-shaped heat exchange tube 11, which surrounds the reduction tank body 1 and has a water inlet and a water outlet. The water inlet is connected to the external cooling tank, and a first control valve for controlling the water inlet switch is provided at the water inlet, and a second control valve for controlling the water outlet switch is provided at the water outlet. A temperature sensor is provided between the reduction tank body 1 and the heat exchange tube 11, and the temperature sensor, the first control valve, and the second control valve are all electrically connected to the controller. The temperature sensor is used to collect whether the heat dissipation temperature between the heat exchange tube 11 and the reduction tank body 1 reaches the critical value of 400°C. When it drops to 400°C, the first control valve is controlled to close and the second control valve is opened to discharge the cold water in the heat exchange tube 11, and the reduction tank body 1 is heated for the second time to increase the temperature for the next reduction reaction of metallic chromium.

[0057] Example 2:

[0058] See also Figure 5-Figure 7 As shown, unlike Example 1, an adjustment baffle 922' is provided on the side of the sliding plate 921 away from the discharge opening 911, perpendicular to the top of the sliding plate 921. The side of the adjustment baffle 922' close to the discharge opening 911 is provided with a first insertion slot 9221', a second insertion slot 9222', and a third insertion slot 9223' from top to bottom. Among them, the first insertion slot 9221' and the second insertion slot 9222' are arranged at an angle, and the third insertion slot 9223' is arranged horizontally. Accordingly, a stop block 925 is provided on the end of the inclined plate 923 close to the adjustment baffle 922', and the arrangement of the stop block 925 divides the inclined plate 923 into two parts, the left end being shorter and the right end being longer. The length of the left end of the tilting plate 923 is greater than the horizontal length h of the first insertion slot 9221', the second insertion slot 9222', and the third insertion slot 9223'. To facilitate securing the tilting plate 923 to the adjustment baffle 922' via a fixing member after the tilting plate 923 is inserted into the first insertion slot 9221' (state 1), the second insertion slot 9222' (state 2), or the third insertion slot 9223', the fixing member may be a fixing nut with a threaded fastener. Furthermore, the provision of three slots at different heights facilitates adjustment of the tilt angle of the tilting plate 923, allowing the tilt angle of the tilting plate 923 to be adjusted between 0° and 30°.

[0059] Example 3:

[0060] See also Figures 8-10As shown, unlike Example 1, the inclined plate 923 includes two stacked up and down and a bottom plate 9231 and a top plate 9232. And the bottom plate 9231 can slide downward relative to the top plate 9232. Triangular pyramid structures 924 are provided on both the bottom plate 9231 and the top plate 9232, and the triangular pyramid structures 924 on the bottom plate 9231 and the top plate 9232 are alternately arranged. It should also be noted that a rack 9234 is provided at the bottom of the transmission rod 9233, and the rack 9234 is engaged with the ratchet 9236 on the balance wheel 9235. By manually pulling the transmission rod 9233, the transmission rod 9233 drives the balance wheel 9235 to rotate upward and rightward, so as to move the bottom plate 9231 downward relative to the top plate 9232, so that there is a gap ( Figure 10 State 2 shown), that is, at this time, the triangular pyramid structure 924 on the top plate 9232 and the triangular pyramid structure 924 on the bottom plate 9231 move in the vertical direction, further serving the purpose of dispersing the metallic chromium. It should also be noted that a groove 9237 is provided on the top plate 9232, and a connecting rod 9238 is slidingly set in the groove 9237. The connecting rod 9238 is in a "T" shape, and a spring 9239 is sheathed on the outside of the connecting rod 9238. One end of the spring 9239 abuts against the bottom of the groove 9237, and the other end abuts against the connecting rod 9238. When the transmission rod 9233 is released, the balance wheel 9235 moves downward to the left and returns to its initial position. At this time, under the action of the pre-tightening elastic force of the spring 9239, there is no gap between the bottom plate 9231 and the top plate 9232 ( Figure 8 By setting up this structure, the dispersion effect of the metallic chromium is improved, and further dispersion can be artificially controlled.

[0061] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0062] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0063] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0064] In the description of this specification, the terms "one embodiment", "some embodiments", "embodiments", "examples", "specific examples" or "some examples" refer to the specific features, structures, materials or characteristics described in conjunction with the embodiment or example and included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, unless they are mutually inconsistent.

[0065] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A reduction device for reducing metallic chromium from chromium carbide, characterized in that: It comprises a reduction tank (1), a heat dissipation mechanism (2), a stirring mechanism (3) and a heating mechanism (4); The inner cavity of the reduction tank body (1) is provided with a partition (5), and the partition (5) divides the reduction tank body (1) into a reduction chamber (6) located at the top and a heat dissipation chamber (7) located at the bottom. The heat dissipation mechanism (2) is arranged in the heat dissipation chamber (7), and a discharge port (8) communicating with the heat dissipation chamber (7) is provided at the bottom of the partition (5); The heat dissipation mechanism (2) comprises a blocking cover (21), a driving member (22) and a heat dissipation structural member (23); The blocking cover (21) is used to block the discharge port (8) to isolate the reduction chamber (6) from the heat dissipation chamber (7), and the inner cavity of the heat dissipation chamber (7) is fixedly mounted with the driving member (22) and the heat dissipation structural member (23); The driving member (22) is used to drive the blocking cover (21) to move so as to open or close the discharge port (8); The heat dissipation structure (23) is fixedly mounted on the driving member (22), and the heat dissipation structure (23) has a spiral channel, and the spiral channel is used to receive the reduced metal chromium; The stirring structure is located in the reduction chamber (6) and is used to stir the chromium carbide to be reduced; The heating mechanism (4) is arranged flatly on the inner wall of the reduction chamber (6) and is used to heat the reduction chamber (6).

2. The reduction device for reducing metallic chromium with chromium carbide according to claim 1, characterized in that: It also includes a material discharge mechanism (9), which is located at the bottom of the heat dissipation chamber (7) and is used to receive the metal chromium after heat dissipation.

3. The reduction device for reducing metallic chromium from chromium carbide according to claim 2, characterized in that: The blanking mechanism (9) comprises a blanking shell (91) and a receiving structure (92); The bottom of the reduction tank (1) is open, the open is communicated with the heat dissipation chamber (7), the unloading shell (91) covers the open, and the receiving structure (92) is located in the unloading shell (91).

4. The reduction device for reducing metallic chromium with chromium carbide according to claim 3, characterized in that: The receiving structure (92) includes a sliding plate (921), a vertical plate (922) and an inclined plate (923); The sliding plate (921) is located at the bottom of the blanking shell (91) and is capable of sliding relative to the blanking shell (91), and a plurality of vertical heat dissipation fins are provided on the sliding plate (921); The vertical plate (922) is mounted on the sliding plate (921), and the inclined plate (923) is fixedly mounted on the top of the vertical plate (922). The inclined plate (923) has an inclination angle of 20°-45°. A dispersion component is provided on the inclined plate (923), and the dispersion component has a plurality of triangular pyramid structures (924) arranged in a matrix.

5. The reduction device for reducing metallic chromium with chromium carbide according to claim 4, characterized in that: A discharge opening (911) is provided on the side wall of the discharge shell (91), and a discharge cover (912) is provided to seal the discharge opening (911).

6. The reduction device for reducing metallic chromium with chromium carbide according to claim 1, characterized in that: The driving member (22) includes a sleeve (221), a driving motor (222), a lifting nut (223) and a support rod (224); The heat dissipation structure (23) is fixedly mounted on the sleeve (221), the sleeve (221) is arranged in the heat dissipation chamber (7), the drive motor (222) is mounted on the inner wall of the reduction tank (1), the output end of the drive motor (222) is fixedly connected to a rotating screw (225), the external thread of the rotating screw (225) is connected to the lifting nut (223), the lifting nut (223) is fixedly connected to the sleeve (221), and one end of the support rod (224) is arranged on the sleeve The inner side wall of the sleeve (221) is close to the side of the discharge port (8), and the support rod (224) is inclined relative to the sleeve (221). The other end of the support rod (224) is hinged to the bottom of the blocking cover (21). The rotation of the driving motor (222) drives the lifting nut (223) to move up and down along the axial direction of the rotating screw (225), drives the sleeve (221) to move up and down, and then drives the support rod (224) to move up and down, so that the blocking cover (21) is respectively located at the first position and the second position; When the blocking cover (21) is located at the first position, the blocking cover (21) blocks the discharge port (8); when the blocking cover (21) is located at the second position, the support rod (224) drives the blocking cover (21) toward the side close to the center of the partition (5) downward to open the discharge port (8).

7. The reduction device for reducing metallic chromium with chromium carbide according to claim 1, characterized in that: A plurality of inclined fins (10) are arranged along the inner side wall of the spiral channel.

8. The reduction device for reducing metallic chromium with chromium carbide according to claim 2, characterized in that: The stirring mechanism (3) comprises a support frame (31) fixedly connected to the middle of the upper surface of the reduction tank body (1); a stirring motor (32) is fixedly connected to the upper surface of the support frame (31); an output end of the stirring motor (32) passes through the support frame (31) to the inner wall of the reduction tank body (1) and is fixedly connected to a stirring shaft (33); a plurality of stirring blades (34) are fixedly connected to the stirring shaft (33); and a plurality of sweeping scrapers (35) are fixedly connected to the bottom end of the stirring shaft (33).

9. The reduction device for reducing metallic chromium with chromium carbide according to claim 8, characterized in that: Also includes a heat exchange mechanism; The heat exchange mechanism is sleeved on the outer wall of the reduction tank body (1), and the heat exchange mechanism can reduce the heat of the reduction tank body (1) and store it.

10. The reduction device for reducing metallic chromium with chromium carbide according to claim 9, characterized in that: The heat exchange mechanism comprises a square-wave-shaped heat exchange tube (11), the heat exchange tube (11) surrounds the reduction tank (1), and the heat exchange tube (11) has a water inlet and a water outlet; The water inlet is connected to the external cooling tank, and a first control valve for controlling the water inlet switch is provided at the water inlet, and a second control valve for controlling the water outlet switch is provided at the water outlet. A temperature sensor is provided between the reduction tank body (1) and the heat exchange pipe (11), and the temperature sensor, the first control valve and the second control valve are all electrically connected to a controller.

Images