A noble metal reduction furnace for improving the reaction efficiency of reducing gas

Abstract

The utility model discloses a kind of noble metal reduction furnace for improving reducing gas reaction efficiency, it is related to noble metal reduction furnace design technical field, including reduction furnace main body, assembly discharge unit and control feeding unit, the reduction furnace main body lower side four corners are separately provided with supporting leg, the reduction furnace main body upper side is provided with controller, the reduction furnace main body front side is provided with control display screen, the reduction furnace main body upper side is provided with control feeding unit, assembly discharge unit includes partition, sealing fixed plate, moving cross bar, moving block and electric push rod, the reduction furnace main body is provided with a partition, a cavity is opened in the partition, a round hole is opened in the partition, noble metal extraction efficiency is improved, raw material extraction is more thorough, extraction time is reduced, production cost is reduced, resources are saved.

Description

Technical Field

[0001] This utility model relates to the field of precious metal reduction furnace design technology, specifically a precious metal reduction furnace for improving the reaction efficiency of reducing gas. Background Technology

[0002] Precious metals generally refer to metals that are scarce in the Earth's crust and have high mining and refining costs. They are considered "precious" due to their rarity, corrosion resistance, good electrical and thermal conductivity, and applications in industry and jewelry making. They mainly refer to eight metallic elements, including gold, silver, and the platinum group metals (ruthenium, rhodium, palladium, osmium, iridium, and platinum). Except for ruthenium and osmium, which have a dense hexagonal structure, the others have a face-centered cubic structure. The atomic coordination number of precious metal elements is 12. Most of them have beautiful colors and lusters and do not easily react with other substances under normal conditions, making them the best materials for jewelry.

[0003] A precious metal reduction furnace is a high-temperature device specifically designed for refining and extracting precious metals (such as gold and silver). It uses a reducing atmosphere (such as hydrogen) under specific conditions to convert metal oxides into pure metallic elements, thereby increasing purity and removing impurities. Its core working principle involves using a reducing agent (such as hydrogen or carbon monoxide) to react with oxides in a high-temperature environment (typically above 1600℃) to release oxygen, generating elemental metals or alloy particles. Simultaneously, the atmosphere must be oxygen-free to prevent secondary oxidation.

[0004] Existing precious metal reduction furnaces designed to improve the efficiency of reducing gas reactions have drawbacks, including low extraction efficiency of precious metals, incomplete extraction of raw materials, increased extraction time, increased production costs, and a tendency to cause waste. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a precious metal reduction furnace that improves the efficiency of reducing gas reaction, improves the extraction efficiency of precious metals, makes the extraction of raw materials more thorough, reduces the extraction time, reduces production costs, saves resources, and can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a precious metal reduction furnace for improving the reaction efficiency of reducing gas, comprising a reduction furnace body, an assembly discharge unit, and a control feeding unit;

[0007] The main body of the reduction furnace is equipped with support legs at the four lower corners, a controller is installed on the upper side of the main body of the reduction furnace, a control display screen is installed on the front side of the main body of the reduction furnace, and a control feeding unit is installed on the upper side of the main body of the reduction furnace.

[0008] Assembled discharge unit: Includes a partition plate, a sealing and fixing plate, a moving crossbar, moving blocks, and an electric push rod. A partition plate is installed inside the reduction furnace body, with a cavity inside the partition plate. A circular hole is opened on the partition plate, extending into the cavity. Sliding grooves are respectively opened on the lower surface of the partition plate at positions before and after the circular hole, extending into the cavity. A sealing and fixing plate is installed inside the cavity, with annular sealing strips on its upper and lower sides, corresponding to the circular hole. Two equally spaced moving blocks are installed on the lower side of the sealing and fixing plate, slidingly connected within corresponding sliding grooves. A moving crossbar is fixedly connected to the lower surface of the two moving blocks. The lower surface of the partition plate, located on the left side of the sliding groove, is fixedly connected to the electric push rod via a fixing seat. The extension end of the electric push rod is fixedly connected to the corresponding moving crossbar. The input end of the electric push rod is electrically connected to the output end of an external power supply via an external control switch group.

[0009] The reduction furnace body is used for assembly and fixation. The controller is used for control and analysis, and for intelligent control. The control display screen is used to operate the device, display data, and facilitate use. The feeding unit is used to control feeding. The partition plate is used for separation and fixation. The sealing plate is used for sealing and protection. The surface of the sealing plate is coated for protection. The moving crossbar is used to move the sealing plate to adjust its position and facilitate opening the round hole. The electric push rod is activated to provide power for the movement of the sealing plate and facilitates control. The moving block is used to move the sealing plate, thereby controlling the opening and closing of the round hole for ease of use.

[0010] Furthermore, the assembly discharge unit also includes an inspection cover and a collection frame. A collection frame is provided on the bottom surface of the reduction furnace body at the position corresponding to the round hole on the partition plate. An inspection hole is provided on the front surface of the reduction furnace body at the position below the partition plate. An inspection cover is provided in the inspection hole, and a handrail is provided on the front side of the inspection cover.

[0011] The inspection cover is used for protection, and the collection frame is used to collect the extracted precious metals for use in production.

[0012] Furthermore, the assembly discharge unit also includes limiting blocks, a reduction furnace, and support frames. Four limiting blocks in a ring array are arranged on the upper surface of the partition plate at the edge of the circular hole. A reduction furnace is arranged in the circular hole on the partition plate between the four limiting blocks. A support frame is arranged on the left and right sides of the main body of the reduction furnace at the upper surface of the partition plate, and the two support frames are in contact with the corresponding reduction furnace.

[0013] The limiting block is used for limiting the position, the reduction furnace is used for reaction processing, and the support frame is used to support the reduction furnace and thus fix it in place.

[0014] Furthermore, the control feeding unit includes a stable support frame, a feeding pipe, a spiral feeding knife, a power motor, a feeding funnel, and a connecting pipe. A stable support frame is provided on the rear side of the reduction furnace body, and a feeding pipe is provided on the stable support frame. The feeding pipe is located on the upper side of the reduction furnace body. A connecting pipe is provided in the discharge hole of the feeding pipe. The lower end of the connecting pipe passes through the reduction furnace body and extends into the reduction furnace. A feeding funnel is provided in the feed hole of the feeding pipe. A spiral feeding knife is rotatably connected inside the feeding pipe. One end of the spiral feeding knife passes through the feeding pipe and is fixedly connected to the output shaft of the power motor. The power motor is fixedly connected to the feeding pipe through the support frame. The input end of the power motor is electrically connected to the output end of an external power supply through an external control switch group.

[0015] The stable support frame is used to fix the feeding pipe, which is used to fix the spiral feeder blade. The spiral feeder blade is used for feeding and crushing, facilitating the conveying of raw materials. Once the power motor is started, it provides power for the rotation of the spiral feeder blade. The feed funnel is used to allow the raw materials to flow into the feeding pipe, and the connecting pipe is used to allow the crushed raw materials to flow into the reduction furnace for feeding.

[0016] Furthermore, the control feeding unit also includes a reducing gas flow pipe, a temperature detector, a heating ring, and a flow rate control valve. The left and right sides of the reduction furnace body are fixedly connected to the heating ring on the upper side of the support frame via a stable support frame. The heating ring is sleeved on the reduction furnace. A temperature detector is installed on the upper side of the reduction furnace, and the detection probe on the temperature detector extends into the reduction furnace. A reducing gas inlet is opened on the upper side of the reduction furnace, and a circular pipe is installed in the reducing gas inlet. A flow rate control valve is installed on the upper side of the reduction furnace body. The upper end of the circular pipe passes through the upper side of the reduction furnace body and is connected to the gas outlet on the flow rate control valve. The gas outlet on the flow rate control valve is connected to the reducing gas flow pipe. One end of the reducing gas flow pipe is connected to external reducing gas. The input ends of the temperature detector and the heating ring are electrically connected to the output end of an external power supply via an external control switch group.

[0017] The reducing gas flow pipe is used to add gas, facilitating the flow of reducing gas into the reduction furnace. The flow rate control valve is used to control the flow rate, thereby controlling the reaction efficiency. The heating ring uses an electromagnetic heating ring for heating, and the reaction efficiency is controlled by increasing the temperature. The temperature detector is used to detect the temperature, facilitating the monitoring of the internal state and the control process.

[0018] Furthermore, the control feeding unit also includes a rotating cylinder, a tilting fan blade, and a second power motor. A second power motor is installed on the upper surface of the partition plate at the right side of the reduction furnace. A rotating cylinder is rotatably connected inside the reduction furnace. One end of the rotating cylinder passes through the reduction furnace and is fixedly connected to the output shaft of the second power motor. A tilting fan blade is fixedly sleeved on the rotating cylinder inside the reduction furnace.

[0019] The second motor starts, causing the rotating cylinder to rotate. The rotating cylinder is used to rotate the flipping fan blades. The surface of the flipping fan blades has a protective coating, which flips the internal raw materials to make the reaction more uniform and facilitates the process, thereby improving the efficiency of the reaction.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This precious metal reduction furnace, which improves the efficiency of reducing gas reaction, has the following advantages: It is equipped with an assembly and discharge unit, a partition plate for separation and fixing, a sealing plate for sealing and protection, a coating on the surface of the sealing plate for protection, a moving crossbar for moving the sealing plate to adjust its position and facilitate opening the round hole, an electric push rod for powering the movement of the sealing plate for easy control, a moving block for moving the sealing plate, a maintenance cover for protection, a collection frame for collecting the extracted precious metal, a limiting block for limiting movement, a reduction furnace for reaction processing, and a support frame for supporting the reduction furnace and controlling its operation.

[0022] 2. This precious metal reduction furnace, which improves the efficiency of reducing gas reaction, has the following advantages: It is equipped with a controlled feeding unit, a stable support frame for fixing the feeding pipe, the feeding pipe for fixing the spiral feeding blade, the spiral feeding blade for feeding and crushing, facilitating the transport of raw materials; a power motor provides power for the rotation of the spiral feeding blade; a feeding funnel allows raw materials to flow into the feeding pipe; a connecting pipe allows the crushed raw materials to flow into the reduction furnace; a reducing gas flow pipe adds gas, facilitating the flow of reducing gas into the reduction furnace; a flow rate control valve controls the flow rate, thereby controlling the reaction efficiency; a heating ring provides heating, controlling the reaction efficiency by increasing the temperature; a temperature detector detects the temperature; and a second power motor rotates the rotating cylinder, which in turn rotates the tilting fan blades. The tilting fan blades have a protective coating to tilt the internal raw materials, improving reaction efficiency and facilitating use.

[0023] 3. This precious metal reduction furnace, which improves the efficiency of reducing gas reaction, has the following advantages: it improves the extraction efficiency of precious metals, makes the extraction of raw materials more thorough, reduces the extraction time, reduces production costs, and saves resources. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the rear side of this utility model;

[0026] Figure 3 This is a partial cross-sectional view of the reduction furnace of this utility model;

[0027] Figure 4 This is a partial cross-sectional view of the assembly and discharge unit of this utility model;

[0028] Figure 5 This is a partial cross-sectional view of the fixed feeding pipe of this utility model.

[0029] In the diagram: 1. Reduction furnace body; 2. Control display screen; 3. Assembly discharge unit; 31. Divider plate; 32. Limiting block; 33. Sealing and fixing plate; 34. Moving crossbar; 35. Moving block; 36. Electric push rod; 37. Inspection cover plate; 38. Reduction furnace; 39. Collection frame; 310. Support frame; 4. Control feeding unit; 41. Stable support frame; 42. Feeding pipe; 43. Spiral feeding knife; 44. Power motor one; 45. Feeding funnel; 46. Connecting pipe; 47. Reduction gas flow pipe; 48. Temperature detector; 49. Heating ring; 410. Rotating cylinder; 411. Rotating fan blade; 412. Power motor two; 413. Flow rate control valve. Detailed Implementation

[0030] 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.

[0031] Please see Figures 1-5 This embodiment provides a technical solution: a precious metal reduction furnace for improving the reaction efficiency of reducing gas, comprising a reduction furnace body 1, an assembly discharge unit 3, and a control feeding unit 4;

[0032] The reduction furnace body 1 has support legs at the four corners of the lower side, a controller on the upper side of the reduction furnace body 1, a control display screen 2 on the front side of the reduction furnace body 1, and a control feeding unit 4 on the upper side of the reduction furnace body 1.

[0033] Assembly of the discharge unit 3: includes a partition plate 31, a sealing and fixing plate 33, a moving crossbar 34, a moving block 35, and an electric push rod 36. A partition plate 31 is installed inside the reduction furnace body 1. A cavity is formed within the partition plate 31, and a circular hole is formed on the partition plate 31, extending into the cavity. Sliding grooves are formed on the lower surface of the partition plate 31 at positions before and after the circular hole, extending into the cavity. A sealing and fixing plate 33 is installed inside the cavity, and annular grooves are formed on the upper and lower sides of the sealing and fixing plate 33. The sealing strips correspond to the corresponding round holes. Two equally spaced movable blocks 35 are provided on the lower side of the sealing fixing plate 33. The two movable blocks 35 are slidably connected in the corresponding slide groove. A movable crossbar 34 is fixedly connected to the lower surface of the two movable blocks 35. The lower surface of the partition plate 31 is located on the left side of the slide groove and is fixedly connected to the electric push rod 36 through a fixing seat. The extension end of the electric push rod 36 is fixedly connected to the corresponding movable crossbar 34. The input end of the electric push rod 36 is electrically connected to the output end of the external power supply through an external control switch group.

[0034] The reduction furnace body 1 is used for assembly and fixation. The controller is used for control analysis and intelligent control. The control display screen 2 is used to operate the device and display data for easy use. The control feeding unit 4 is used to control feeding. The partition plate 31 is used for separation and fixation. The sealing plate 33 is used for sealing and protection. The surface of the sealing plate 33 is coated for protection. The moving crossbar 34 is used to move the sealing plate 33 to adjust its position and facilitate opening the round hole. The electric push rod 36 is activated to provide power for moving the sealing plate 33 for easy control. The moving block 35 is used to move the sealing plate 33, thereby controlling the opening and closing of the round hole for easy use.

[0035] The assembly discharge unit 3 also includes an inspection cover plate 37 and a collection frame 39. A collection frame 39 is provided on the bottom surface of the reduction furnace body 1 at the position corresponding to the round hole on the partition plate 31. An inspection hole is provided on the front surface of the reduction furnace body 1 at the position below the partition plate 31. An inspection cover plate 37 is provided in the inspection hole. A handrail is provided on the front side of the inspection cover plate 37.

[0036] The inspection cover 37 is used for protection, and the collection frame 39 is used to collect the extracted precious metals for use in production.

[0037] The assembly discharge unit 3 also includes a limiting block 32, a reduction furnace 38, and a support frame 310. Four limiting blocks 32 in an annular array are provided on the upper surface of the partition plate 31 at the edge of the circular hole. A reduction furnace 38 is provided between the four limiting blocks 32 in the circular hole on the partition plate 31. A support frame 310 is provided on the left and right sides of the reduction furnace body 1 at the upper side of the partition plate 31, and the two support frames 310 are in contact with the corresponding reduction furnace 38.

[0038] The limiting block 32 is used for limiting position, the reduction furnace 38 is used for reaction processing, and the support frame 310 is used to support the reduction furnace 38 and thus fix it in place.

[0039] The control feeding unit 4 includes a stable support frame 41, a feeding pipe 42, a spiral feeding knife 43, a power motor 44, a feeding funnel 45, and a connecting pipe 46. A stable support frame 41 is provided on the rear side of the reduction furnace body 1. A feeding pipe 42 is provided on the stable support frame 41. The feeding pipe 42 is located on the upper side of the reduction furnace body 1. A connecting pipe 46 is provided in the discharge hole of the feeding pipe 42. The lower end of the connecting pipe 46 passes through the reduction furnace body 1 and extends into the reduction furnace 38. A feeding funnel 45 is provided in the feed hole of the feeding pipe 42. A spiral feeding knife 43 is rotatably connected in the feeding pipe 42. One end of the spiral feeding knife 43 passes through the feeding pipe 42 and is fixedly connected to the output shaft of the power motor 44. The power motor 44 is fixedly connected to the feeding pipe 42 through the support frame. The input end of the power motor 44 is electrically connected to the output end of an external power supply through an external control switch group.

[0040] The stable support frame 41 is used to fix the feeding pipe 42, the feeding pipe 42 is used to fix the spiral feeding knife 43, the spiral feeding knife 43 is used for feeding and crushing, and facilitates the conveying of raw materials. The power motor 44 is started to provide power for the rotation of the spiral feeding knife 43. The feed funnel 45 is used to allow the raw materials to flow into the feeding pipe 42, and the connecting pipe 46 is used to allow the crushed raw materials to flow into the reduction furnace 38 for feeding.

[0041] The control feeding unit 4 also includes a reducing gas flow pipe 47, a temperature detector 48, a heating ring 49, and a flow rate control valve 413. The left and right sides of the reduction furnace body 1 are fixedly connected to the heating ring 49 on the upper side of the support frame 310 through a stable support frame. The heating ring 49 is sleeved on the reduction furnace 38. A temperature detector 48 is installed on the upper side of the reduction furnace 38. The detection probe on the temperature detector 48 extends into the reduction furnace 38. A reducing gas inlet hole is opened on the upper side of the reduction furnace 38. A round pipe is installed in the reducing gas inlet hole. A flow rate control valve 413 is installed on the upper side of the reduction furnace body 1. The upper end of the round pipe passes through the upper side of the reduction furnace body 1 and is connected to the gas outlet on the flow rate control valve 413. The gas outlet on the flow rate control valve 413 is connected to the reducing gas flow pipe 47. One end of the reducing gas flow pipe 47 is connected to the external reducing gas. The input ends of the temperature detector 48 and the heating ring 49 are electrically connected to the output end of the external power supply through an external control switch group.

[0042] The reducing gas flow pipe 47 is used to add gas, facilitating the flow of reducing gas into the reduction furnace 38. The flow rate control valve 413 is used to control the flow rate, thereby controlling the reaction efficiency. The heating ring 49 is an electromagnetic heating ring used for heating, thereby controlling the reaction efficiency by increasing the temperature. The temperature detector 48 is used to detect the temperature, facilitating the detection of the internal state and convenient control.

[0043] The control feeding unit 4 also includes a rotating cylinder 410, a tilting fan blade 411, and a second power motor 412. A second power motor 412 is located on the upper surface of the partition plate 31 at the right side of the reduction furnace 38. A rotating cylinder 410 is rotatably connected inside the reduction furnace 38. One end of the rotating cylinder 410 passes through the reduction furnace 38 and is fixedly connected to the output shaft of the second power motor 412. A tilting fan blade 411 is fixedly sleeved on the rotating cylinder 410 inside the reduction furnace 38.

[0044] The second power motor 412 starts to rotate the rotating cylinder 410. The rotating cylinder 410 is used to rotate the flipping fan blade 411. The surface of the flipping fan blade 411 has a protective coating to flip the internal raw materials, so as to make the reaction more uniform and facilitate the improvement of reaction efficiency.

[0045] The working principle of the precious metal reduction furnace for improving the reducing gas reaction efficiency provided by this utility model is as follows: First, a stable support frame 41 is used to fix the feeding pipe 42, which in turn fixes the spiral feeding blade 43. The spiral feeding blade 43 is used for feeding and crushing raw materials, facilitating the transport of raw materials. The power motor 44 is started to provide power for the rotation of the spiral feeding blade 43. The feed funnel 45 allows the raw materials to flow into the feeding pipe 42, and the connecting pipe 46 allows the crushed raw materials to flow into the reduction furnace 38. The reducing gas flow pipe 47 is used to add gas, facilitating the flow of reducing gas into the reduction furnace 38. The flow rate control valve 413 is used to control the flow rate, allowing the raw materials to flow into the device. Then, the heating ring 49 is started for heating, and the reaction efficiency is controlled by increasing the temperature. The temperature detector 48 is used for... The system detects the temperature, and the second motor 412 starts to rotate the rotating cylinder 410. The rotating cylinder 410 rotates the rotating fan blade 411, which has a protective coating to rotate the internal raw materials, thereby improving the reaction efficiency. Finally, the system is separated and fixed by the partition plate 31, and sealed and fixed plate 33 is used for sealing and protection. The surface of the sealed and fixed plate 33 is coated for protection. The moving crossbar 34 is used to move the sealed and fixed plate 33 to adjust its position and facilitate opening the round hole. The electric push rod 36 is started to provide power for the movement of the sealed and fixed plate 33 for easy control. The moving block 35 is used to move the sealed and fixed plate 33. The inspection cover plate 37 is used for protection. The collection frame 39 is used to collect the extracted precious metals for collection and use.

[0046] It is worth noting that the core chip of the external control switch group disclosed in the above embodiments is a PLC microcontroller, the temperature detector 48 is an infrared temperature detector, the heating ring 49 is an electromagnetic heating ring, and the power motor 44 and the power motor 412 are servo motors. The external control switch group controls the operation of the temperature detector 48, the heating ring 49, the electric push rod 36, the power motor 44 and the power motor 412 using methods commonly used in the prior art.

[0047] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A precious metal reduction furnace for improving the efficiency of reducing gas reactions, characterized in that: It includes the main body of the reduction furnace (1), the assembly of the discharge unit (3) and the control of the feeding unit (4); The main body of the reduction furnace (1) is provided with support legs at the four corners of the lower side, a controller is provided on the upper side of the main body of the reduction furnace (1), a control display screen (2) is provided on the front side of the main body of the reduction furnace (1), and a control feeding unit (4) is provided on the upper side of the main body of the reduction furnace (1). Assembly of the discharge unit (3): includes a partition plate (31), a sealing and fixing plate (33), a moving crossbar (34), a moving block (35), and an electric push rod (36). A partition plate (31) is provided inside the main body (1) of the reduction furnace. A cavity is opened in the partition plate (31). A round hole is opened on the partition plate (31) and extends into the cavity. Sliding grooves are opened on the lower surface of the partition plate (31) at the front and rear sides of the round hole, respectively. The two sliding grooves extend into the cavity. A sealing and fixing plate (33) is provided in the cavity. The upper and lower sides of the sealing and fixing plate (33) are respectively The sealing plate (33) is provided with an annular sealing strip, and the two sealing strips correspond to the corresponding round holes. The sealing plate (33) is provided with two equally spaced moving blocks (35) on its lower side. The two moving blocks (35) are slidably connected in the corresponding slide groove. A moving crossbar (34) is fixedly connected to the lower surface of the two moving blocks (35). The lower surface of the partition plate (31) is located on the left side of the slide groove and is fixedly connected to the electric push rod (36) through a fixed seat. The extension end of the electric push rod (36) is fixedly connected to the corresponding moving crossbar (34). The input end of the electric push rod (36) is electrically connected to the output end of the external power supply through an external control switch group.

2. The precious metal reduction furnace for improving the reaction efficiency of reducing gas according to claim 1, characterized in that: The assembly discharge unit (3) also includes an inspection cover plate (37) and a collection frame (39). A collection frame (39) is provided on the bottom surface of the reduction furnace body (1) at the position corresponding to the round hole on the partition plate (31). An inspection hole is provided on the front surface of the reduction furnace body (1) at the position below the partition plate (31). An inspection cover plate (37) is provided in the inspection hole. A handrail is provided on the front side of the inspection cover plate (37).

3. A precious metal reduction furnace for improving the reaction efficiency of reducing gas according to claim 2, characterized in that: The assembly discharge unit (3) also includes a limiting block (32), a reduction furnace (38) and a support frame (310). Four limiting blocks (32) in an annular array are provided on the upper surface of the partition plate (31) at the edge of the circular hole. A reduction furnace (38) is provided between the four limiting blocks (32) in the circular hole on the partition plate (31). A support frame (310) is provided on the left and right sides of the main body of the reduction furnace (1) at the upper side of the partition plate (31). The two support frames (310) are in contact with the corresponding reduction furnace (38).

4. A precious metal reduction furnace for improving the reaction efficiency of reducing gas according to claim 3, characterized in that: The control feeding unit (4) includes a stable support frame (41), a feeding pipe (42), a spiral feeding knife (43), a power motor (44), a feeding funnel (45), and a connecting pipe (46). A stable support frame (41) is provided on the rear side of the reduction furnace body (1). A feeding pipe (42) is provided on the stable support frame (41). The feeding pipe (42) is located on the upper side of the reduction furnace body (1). A connecting pipe (46) is provided in the discharge hole of the feeding pipe (42). The lower part of the connecting pipe (46) The end passes through the main body (1) of the reduction furnace and extends into the reduction furnace (38). A feeding funnel (45) is provided in the feeding hole on the feeding pipe (42). A spiral feeding knife (43) is rotatably connected inside the feeding pipe (42). One end of the spiral feeding knife (43) passes through the feeding pipe (42) and is fixedly connected to the output shaft of the first power motor (44). The first power motor (44) is fixedly connected to the feeding pipe (42) through a support frame. The input end of the first power motor (44) is electrically connected to the output end of the external power supply through an external control switch group.

5. A precious metal reduction furnace for improving the reaction efficiency of reducing gas according to claim 4, characterized in that: The control feeding unit (4) also includes a reducing gas flow pipe (47), a temperature detector (48), a heating ring (49), and a flow rate control valve (413). The left and right sides of the main body of the reduction furnace (1) are fixedly connected to the heating ring (49) on the upper side of the support frame (310) through a stable support frame. The heating ring (49) is sleeved on the reduction furnace (38). A temperature detector (48) is provided on the upper side of the reduction furnace (38). The detection probe on the temperature detector (48) extends into the reduction furnace (38). A reducing gas flow meter is opened on the upper side of the reduction furnace (38). A gas inlet hole is provided, and a circular tube is provided inside the reducing gas inlet hole. A flow rate control valve (413) is provided on the upper side of the reducing furnace body (1). The upper end of the circular tube passes through the upper side of the reducing furnace body (1) and is connected to the gas outlet hole on the flow rate control valve (413). The gas outlet hole on the flow rate control valve (413) is connected to the reducing gas flow pipe (47). One end of the reducing gas flow pipe (47) is connected to the external reducing gas. The input terminals of the temperature detector (48) and the heating ring (49) are electrically connected to the output terminal of the external power supply through an external control switch group.

6. A precious metal reduction furnace for improving the reaction efficiency of reducing gas according to claim 4, characterized in that: The control feeding unit (4) also includes a rotating cylinder (410), a reversing fan blade (411), and a second power motor (412). A second power motor (412) is provided on the upper surface of the partition plate (31) at the right side of the reduction furnace (38). A rotating cylinder (410) is rotatably connected inside the reduction furnace (38). One end of the rotating cylinder (410) passes through the reduction furnace (38) and is fixedly connected to the output shaft of the second power motor (412). A reversing fan blade (411) is fixedly sleeved on the rotating cylinder (410) inside the reduction furnace (38).

Images