Lead carbide-free metallurgical device and metallurgical method

Abstract

The invention discloses a non-carbonized lead metallurgical device and method, and belongs to the field of non-carbonized lead metallurgy. The non-carbonized lead metallurgical device comprises a metallurgical equipment shell, a low-temperature heating chamber is formed in the metallurgical equipment shell, an exhaust chamber is further formed in the metallurgical equipment shell, and a material fishing rod is further arranged in the low-temperature heating chamber; the material fishing rod can fish flying materials in the low-temperature heating chamber into the high-temperature reduction chamber, and a turning-up assembly for turning over the materials at the bottom of the low-temperature heating chamber is arranged in the low-temperature heating chamber. According to the device, the turning-up assembly is arranged, the turning-up assembly can push up lead sulfide particles to enable the lead sulfide particles to fly in the low-temperature heating chamber, the heating uniformity of the lead sulfide particles can be improved in the process, part of the lead sulfide particles which cannot be in complete contact with oxygen can fully react with the oxygen, and therefore within the same oxidation time, the lead sulfide particles can be fully oxidized. More lead sulfide particles can be oxidized, the oxidation rate is effectively increased, and the oxidation efficiency of lead sulfide can be effectively improved in this way.

Description

Technical Field

[0001] The invention relates to the field of carbide-free lead metallurgy, and more specifically to a carbide-free lead metallurgy device and a metallurgical method. Background Art

[0002] Lead carbide-free metallurgy is a method that does not include lead carbide in the metallurgical process. This method generally involves the use of a substitute substance such as lead oxide and a specific heating and treatment process to achieve the desired metallurgical effect. In this process, lead sulfide particles are oxidized in a low-temperature heating chamber. Lead carbide-free metallurgical processes may involve different processing steps and equipment settings to ensure the desired oxidation efficiency and product quality.

[0003] The current technology of carbonized lead metallurgy adopts the condition of 400-750 degrees Celsius, feeding air and lead sulfide into the equipment, oxidizing the lead sulfide into lead oxide, and then reducing the lead oxide into lead by hydrogen reduction in a high-temperature reduction chamber. In the process of oxidizing lead sulfide into lead oxide, the lead sulfide is mostly placed on an inclined vibrating screen for heating reaction with air. When the lead sulfide material falls on the vibrating screen and is heated and oxidized, the lead sulfide fed later will cover the surface of the lead sulfide fed previously, resulting in the lead sulfide fed previously not being able to completely contact with the air, and the oxidation efficiency is extremely low. Only by setting the vibrating screen long enough can the lead sulfide particles at the bottom be completely contacted with the air to react. Since the vibrating screen is set long enough, the lead sulfide stays on the vibrating screen for too long, which will result in a long waiting time when the lead sulfide is first oxidized, and the oxidized lead sulfide can enter the high-temperature reduction chamber for treatment, which further leads to low oxidation efficiency of lead sulfide during the oxidation process. Therefore, a carbonized lead metallurgical device and a metallurgical method are proposed. Summary of the invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a suspension device for lead carbide-free metallurgy that can determine the position of the center of gravity of the material and adjust the center of gravity of the material.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A carbide-free lead metallurgical device comprises a metallurgical equipment shell, a low-temperature heating chamber is provided in the metallurgical equipment shell, an exhaust chamber is provided in the metallurgical equipment shell, the exhaust chamber is located at the bottom of the low-temperature heating chamber, a high-temperature reduction chamber is rotatably provided on the outer surface of the metallurgical equipment shell, a scooping rod is provided in the low-temperature heating chamber, the scooping rod can scoop flying materials in the low-temperature heating chamber into the high-temperature reduction chamber, a mesh hole for gas to pass through is provided at the bottom of the low-temperature heating chamber, the mesh hole is used to connect the low-temperature heating chamber and the exhaust chamber, and a gas is provided in the exhaust chamber. An exhaust pipe connected to the outside, a suction pipe for feeding is arranged in the low-temperature heating chamber, an air intake pipe for entering the low-temperature heating chamber is arranged in the low-temperature heating chamber, a turning assembly for turning over the material at the bottom of the low-temperature heating chamber is arranged in the low-temperature heating chamber, the turning assembly includes a driving motor fixedly installed inside the metallurgical equipment shell, the output end of the driving motor is fixedly connected to a reciprocating screw, the reciprocating screw is located in the low-temperature heating chamber, a ring is fixedly provided at the non-threaded part of the bottom of the reciprocating screw, and the outer surface of the ring is fixedly connected to a shovel rod for turning over the material.

[0007] Furthermore, an intermittent component used in conjunction with a reciprocating screw is provided in the low-temperature heating chamber, and the intermittent component includes a ring plate fixedly sleeved on the outer surface of the reciprocating screw, a ring cavity is opened in the ring plate, a first gear rotatably sleeved on the outer surface of the reciprocating screw is provided in the ring cavity, a second gear fixedly sleeved on the outer surface of the reciprocating screw is also provided in the ring cavity, a shaft rod is rotatably installed at the bottom of the inner wall of the ring cavity, a third gear is provided on the bottom fixed sleeve of the outer surface of the shaft rod, a transmission wheel is provided on the top fixed sleeve of the outer surface of the shaft rod, and the outer surface of the transmission wheel is fixedly connected to a half-circle gear row, the transmission wheel is meshed with the first gear through the half-circle gear row, and the second gear and the third gear are meshed with each other.

[0008] Furthermore, the outer surface of the first gear is fixedly connected to a scooping rod, the scooping rod is divided into a connecting rod and a scooping hopper, the connecting rod is an L-shaped rod, a trough is provided inside the connecting rod, the inner wall of the trough away from the scooping hopper is fixedly connected to an electric push rod, the telescopic end of the electric push rod is fixedly connected to the first push plate, the inner wall of the trough close to the scooping hopper is fixedly connected to a conductive spring, one end of the conductive spring away from the scooping hopper is fixedly connected to the first push plate, and a second push plate is slidably provided at one end of the trough close to the scooping hopper, the first push plate and the second push plate are fixedly connected by a soft steel wire, the first push plate can slide in the trough, half a circle of contraction grooves are equidistantly provided on the inner circumference of the transmission wheel, each of the contraction grooves is provided with contraction teeth, and the contraction teeth contact the tooth row of the first gear when the transmission wheel rotates, the contraction teeth are provided on the half circle of the outer surface of the transmission wheel without a tooth row, the contraction teeth include a pressure sensor fixedly installed on the inner wall of the contraction groove, a reset spring and a contraction block are also provided in the contraction groove, and the contraction block is elastically connected to the pressure sensor through a reset spring.

[0009] Furthermore, a material receiving pipe is fixedly inserted in the material trough, and when the conductive spring is not energized, the first push plate can connect the material trough with the high-temperature reduction chamber. The material receiving pipe is a curved pipe, and a rotatable rotating ring is provided on the inner wall of the metallurgical equipment shell, and the material receiving pipe passes through the rotating ring to connect with the high-temperature reduction chamber.

[0010] Furthermore, a reducing gas feed pipe is fixedly inserted at the upper end of the high-temperature reduction chamber, and a discharging pipe is fixedly inserted at the lower end of the high-temperature reduction chamber. The reducing gas feed pipe can introduce hydrogen into the ideal high-temperature reduction chamber from the outside. The hydrogen concentration in the high-temperature reduction chamber is greater than the gas concentration in the low-temperature heating chamber. A one-way valve is arranged inside the material connecting pipe, and the direction of the one-way valve inside the material connecting pipe can allow materials to enter the high-temperature reduction chamber from the material trough.

[0011] Furthermore, a feeding assembly for use with a suction pipe is provided inside the high-temperature reduction chamber, and the feeding assembly includes a bellows movably mounted on the outer surface of a reciprocating screw, a swivel is provided on the non-threaded portion of the top of the reciprocating screw, a screw sleeve is provided on the reciprocating screw, the top of the bellows is fixedly connected to the ring shaft, the bottom end of the bellows is fixedly connected to the screw sleeve, a hole for air intake is provided on the ring shaft, a one-way valve for air intake into the ring shaft is provided in the hole, the ring shaft is connected to the interior of the bellows, an air pipe is also inserted on the ring shaft, the bottom end of the air pipe is inserted on the suction pipe, a one-way valve is provided inside the suction pipe, and the one-way valve inside the suction pipe can allow the suction pipe to feed material from the outside of the low-temperature heating chamber to the inside of the low-temperature heating chamber.

[0012] Furthermore, the shovel rod is a push rod composed of multiple plow-shaped structures, the lowest point of the shovel rod contacts the bottom of the low-temperature heating chamber, the mesh hole at the bottom of the low-temperature heating chamber is six millimeters, and the horizontal position of the suction tube is the same as the horizontal position of the highest point of the shovel rod.

[0013] Furthermore, the air pressure of the air intake pipe is greater than the gravity of the raw material particles, and the air intake pipe and the suction pipe are symmetrically arranged on both sides of the metallurgical equipment shell.

[0014] Furthermore, when the power is off, the elastic force of the conductive spring is greater than the resistance of the electric push rod, the conductive spring and the electric push rod are electrically connected to the data processing unit, and the pressure sensor is electrically connected to the data processing unit.

[0015] A metallurgical method without carbide lead metallurgical device, S1: The crushed lead sulfide and air are blown into a low-temperature heating chamber with an internal temperature of 400-750°C through a suction pipe and an air inlet pipe, and the driving motor drives the shovel rod to turn over the lead sulfide materials accumulated at the bottom of the low-temperature heating chamber, and the lead sulfide materials are separated from each other and scattered throughout the low-temperature heating chamber; S2: The lead sulfide particles turned up by the shovel rod fly at the highest point of the shovel rod. With the operation of the suction pipe and the air intake pipe, the air subsequently entering the low-temperature heating chamber will impact the flying lead sulfide, so that the lead sulfide turned up by the shovel rod is heated more evenly. The lead sulfide material entering the low-temperature heating chamber through the suction pipe will contact the heated flying lead sulfide, and the temperature will be exchanged, so that the lead sulfide particles just entering the low-temperature heating chamber will be preheated, which is convenient for oxidation in the low-temperature heating chamber. S3: The suction pipe and the air inlet pipe blow the lead sulfide and air into the low-temperature heating chamber, and the two form convection, so that the air directly impacts the lead sulfide discharged into the low-temperature heating chamber, further increasing the uniformity of the lead sulfide particles in the low-temperature heating chamber when being heated, so that it is completely dispersed; S4: When the lead sulfide particles flying in the low-temperature heating chamber are not pumped into the suction pipe, the scooping rod begins to scoop the completely oxidized lead oxide particles into the high-temperature reduction chamber for reduction.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The present application provides a flipping assembly, which can push up the lead sulfide particles and make them fly in the low-temperature heating chamber. This process helps to improve the heating uniformity of the lead sulfide particles, so that some lead sulfide particles that cannot fully contact with oxygen can fully react with oxygen. In this way, more lead sulfide particles can be oxidized within the same oxidation time, effectively increasing the oxidation rate. In this way, the oxidation efficiency of lead sulfide can be effectively improved; (2) In the present application, by providing a turning assembly, a suction pipe and an air intake pipe, the lead sulfide particles are moved to the highest point on the surface of the shovel rod by the turning assembly, and then blown up by air through the air intake pipe and fly in the low-temperature heating chamber. This process further improves the heating uniformity of the lead sulfide particles, ensuring that each lead sulfide particle can fully contact with the oxygen in the low-temperature heating chamber. In this way, the lead sulfide particles can be oxidized into lead oxide particles more quickly, effectively improving the oxidation efficiency of lead sulfide. (3) The present application provides a suction pipe and an air inlet pipe on both sides of the metallurgical equipment shell, which will generate convection during feeding. The air blown into the air inlet pipe will immediately blow away the lead sulfide particles blown into the low-temperature heating chamber through the suction pipe, effectively reducing the accumulation of lead sulfide particles and further improving the heating uniformity of the lead sulfide particles, thereby achieving the purpose of improving the oxidation efficiency; (4) The present application sets an intermittent component, a scooping rod and a feeding component. When the intermittent component is in operation, the scooping rod stops working, and when the feeding stops, the scooping rod starts working, so that the oxidized lead oxide is scooped from the low-temperature heating chamber to the high-temperature reduction chamber for treatment. This process provides sufficient time for the lead sulfide particles to oxidize in the low-temperature heating chamber, ensuring that the lead sulfide particles are fully exposed to oxygen and oxidized. Within the same oxidation time, the particles scooped out each time are lead oxide particles, which effectively improves the oxidation efficiency of lead sulfide. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall front structure of the present invention; Figure 2 It is a cross-sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 A magnified view of the structure at center; Figure 4 It is a schematic diagram of the combination of the intermittent assembly and the scooping rod of the present invention; Figure 5 A cross-sectional view of the internal structure of the scooping rod of the present invention; Figure 6 An exploded view of the feed assembly and the reciprocating screw of the present invention; Figure 7 For the present invention Figure 2 A magnified view of the structure at B in the middle; Figure 8 This is a cross-sectional view of the transmission wheel and the first gear of the present invention when they are working.

[0018] Description of the numbers in the figure: 1. Metallurgical equipment housing; 2. Turning assembly; 3. Intermittent assembly; 4. Lifting rod; 5. Receiving pipe; 6. High-temperature reduction chamber; 7. Feeding assembly; 8. Rotating ring; 11. Low-temperature heating chamber; 12. Exhaust chamber; 13. Exhaust pipe; 14. Suction pipe; 15. Intake pipe; 21. Driving motor; 22. Reciprocating screw; 23. Ring; 24. Shovel rod; 31. Ring plate; 32. Ring cavity; 33. First gear; 34. Second gear; 35. Third gear; 36. 6. Shaft; 37. Transmission wheel; 371. Contraction groove; 38. Contraction tooth; 381. Pressure sensor; 382. Return spring; 383. Contraction block; 41. Connecting rod; 42. Fishing hopper; 43. Material trough; 44. Electric push rod; 45. Conductive spring; 46. Data processing unit; 47. First push plate; 48. Second push plate; 61. Reducing gas feed pipe; 62. Discharge pipe; 71. Bellows; 72. Ring shaft; 73. Air pipe; 74. Screw sleeve. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0020] See also Figures 1 to 8 A carbide-free lead metallurgical device comprises a metallurgical equipment shell 1, a low-temperature heating chamber 11 is provided in the metallurgical equipment shell 1, an exhaust chamber 12 is provided in the metallurgical equipment shell 1, the exhaust chamber 12 is located at the bottom of the low-temperature heating chamber 11, a high-temperature reduction chamber 6 is rotatably provided on the outer surface of the metallurgical equipment shell 1, a scooping rod 4 is provided in the low-temperature heating chamber 11, the scooping rod 4 can scoop the flying materials in the low-temperature heating chamber 11 into the high-temperature reduction chamber 6, a mesh hole for gas to pass through is provided at the bottom of the low-temperature heating chamber 11, the mesh hole is used to connect the low-temperature heating chamber 11 and the exhaust chamber 12, and the exhaust chamber 12 is provided with a gas connected to the outside An exhaust pipe 13 is connected to the low-temperature heating chamber 11, a suction pipe 14 for feeding is arranged in the low-temperature heating chamber 11, an air intake pipe 15 for entering the low-temperature heating chamber 11 is arranged in the low-temperature heating chamber 11, and a turning component 2 for turning over the material at the bottom of the low-temperature heating chamber 11 is arranged in the low-temperature heating chamber 11, and the turning component 2 includes a driving motor 21 fixedly installed inside the metallurgical equipment housing 1, and the output end of the driving motor 21 is fixedly connected to a reciprocating screw 22, and the reciprocating screw 22 is located in the low-temperature heating chamber 11, and a collar 23 is fixedly sleeved at the non-threaded part at the bottom of the reciprocating screw 22, and the outer surface of the collar 23 is fixedly connected to a shovel rod 24 for turning over the material.

[0021] The shovel rod 24 is a push rod composed of multiple plow-shaped structures. The lowest point of the shovel rod 24 contacts the bottom of the low-temperature heating chamber 11. The mesh at the bottom of the low-temperature heating chamber 11 is six millimeters. The horizontal position of the suction pipe 14 is the same as the horizontal position of the highest point of the shovel rod 24.

[0022] When the lead sulfide is metallurgically treated, the crushed lead sulfide is crushed into lead sulfide particles with a diameter greater than 6 mm, which are first blown into the low-temperature heating chamber 11 through the suction pipe 14, and then the drive motor 21 is started, and the external air is blown into the low-temperature heating chamber 11 through the air intake pipe 15. The lead sulfide particles are oxidized in the low-temperature heating chamber 11 to become lead oxide particles. The lead sulfide particles blown into the low-temperature heating chamber 11 through the suction pipe 14, due to the operation of the drive motor 21, will drive the flipping component 2 to work, and the flipping component 2 will push the lead sulfide particles up. The lead sulfide particles pushed up by the flipping assembly 2 are scooped into the high-temperature reduction chamber 6 by the scooping rod 4 after a sufficiently long time in the low-temperature heating chamber 11. The hydrogen in the high-temperature reduction chamber 6 reacts with the lead oxide particles to be reduced to single lead particles and discharged from the discharge pipe 62, thereby realizing the metallurgy of the lead sulfide, making the lead sulfide particles that cannot be completely in contact with oxygen completely in contact with oxygen, and the lead oxide particles can react with oxygen more quickly to be oxidized. In the same oxidation time, more lead sulfide particles are oxidized, which effectively improves the oxidation rate. When the driving motor 21 drives the flipping assembly 2 to work, the driving motor 21 first drives the reciprocating screw 22 to rotate, and the reciprocating screw 22 drives the shovel rod 24 to rotate through the ring 23. Due to the plow-shaped structure of the shovel rod 24, the lead sulfide particles at the bottom of the low-temperature oxidation chamber will move along the surface of the shovel rod 24 to the highest point of the shovel rod 24, so that the accumulated lead sulfide particles are separated from each other and as much as possible are in complete contact with oxygen. The sulfur dioxide gas generated after the lead sulfide is oxidized will gradually settle downward into the exhaust chamber 12 because its own gas molecular mass is greater than that of oxygen, and will be discharged through the exhaust pipe 13.

[0023] like Figure 2 As shown, the air pressure of the air inlet pipe 15 is greater than the gravity of the raw material particles, and the air inlet pipe 15 and the suction pipe 14 are symmetrically arranged on both sides of the metallurgical equipment housing 1; In order to further improve the efficiency of lead sulfide oxidation and improve the uniformity of lead sulfide particles when being heated in the low-temperature heating chamber 11, the lead sulfide particles that have moved to the highest point on the surface of the shovel rod 24 through the flipping assembly 2 will be blown up by the air during the process of air passing through the intake pipe 15, and fly in the low-temperature heating chamber 11, so that the uniformity of lead sulfide particles being heated is further improved, and each lead sulfide particle can fully contact with the oxygen in the low-temperature heating chamber 11, so that the lead sulfide particles can be oxidized into lead oxide particles faster, further improving the oxidation efficiency of lead sulfide; At the same time, the lead sulfide particles entering the low-temperature heating chamber 11 through the suction pipe 14 will collide with the lead sulfide particles pushed up by the flip-up component 2. During the collision, the heated lead sulfide particles will complete heat exchange with the lead sulfide particles that have just entered the low-temperature heating chamber 11, thereby achieving preheating of the lead sulfide particles entering the low-temperature heating chamber 11 through the suction pipe 14, so that this part of the lead sulfide particles can reach the temperature of the oxidation reaction faster, thereby improving the oxidation efficiency; Since the air inlet pipe 15 and the suction pipe 14 are symmetrically arranged on both sides of the metallurgical equipment shell 1, convection will be generated when the two are feeding. The air blown into the air inlet pipe 15 will immediately blow away the lead sulfide particles blown into the low-temperature heating chamber 11 through the suction pipe 14, reduce the accumulation of lead sulfide particles, and further improve the uniformity of heating of the lead sulfide particles, thereby achieving the effect of improving the oxidation efficiency.

[0024] like Figure 2 and Figure 4 As shown, an intermittent component 3 used in conjunction with the reciprocating screw 22 is provided in the low-temperature heating chamber 11, and the intermittent component 3 includes a ring plate 31 fixedly sleeved on the outer surface of the reciprocating screw 22, a ring cavity 32 is opened in the ring plate 31, a first gear 33 rotatably sleeved on the outer surface of the reciprocating screw 22 is provided in the ring cavity 32, a second gear 34 fixedly sleeved on the outer surface of the reciprocating screw 22 is also provided in the ring cavity 32, a shaft rod 36 is rotatably installed at the bottom of the inner wall of the ring cavity 32, a third gear 35 is fixedly sleeved on the bottom of the outer surface of the shaft rod 36, a transmission wheel 37 is fixedly sleeved on the top of the outer surface of the shaft rod 36, and the outer surface of the transmission wheel 37 is fixedly connected to a half-circle gear row, the transmission wheel 37 is meshed with the first gear 33 through the half-circle gear row, and the second gear 34 and the third gear 35 are meshed with each other.

[0025] In order to allow the lead oxide particles that are flying and completely oxidized in the low-temperature heating chamber 11 to be moved from the low-temperature heating chamber 11 to the high-temperature reduction chamber 6 without stopping the equipment, when the suction pipe 14 does not blow lead sulfide particles into the low-temperature heating chamber 11, the air intake pipe 15 continues to blow air into the low-temperature heating chamber 11, and the intermittent component 3 works, rotating with the scooping rod 4 to scoop up the lead oxide that is flying and completely reacted in the low-temperature heating chamber 11, and discharge it into the high-temperature reduction chamber 6 through the receiving pipe 5 for reduction treatment. When the suction pipe 14 starts to continue to blow lead sulfide particles into the low-temperature heating chamber 11, under the action of the intermittent component 3, the scooping rod 4 stops scooping the flying lead oxide. The design of the scooping rod 4 and the intermittent component 3 provides sufficient oxidation time for the lead sulfide particles to be oxidized in the low-temperature heating chamber 11, so that the lead sulfide particles can be more fully contacted with oxygen for oxidation. In the same oxidation time, the particles scooped out each time can be oxidized lead oxide particles, thereby improving the oxidation effect of lead sulfide. When the intermittent assembly 3 is working, the driving motor 21 will first drive the second gear 34 to rotate through the reciprocating screw 22, and the second gear 34 will drive the third gear 35 meshing with the second gear 34 to rotate, and the third gear 35 will drive the transmission wheel 37 to rotate through the shaft 36. When the part with the tooth row on the surface of the transmission wheel 37 meshes with the first gear 33, the transmission wheel 37 will drive the first gear 33 to rotate, and the first gear 33 will drive the scooping rod 4 to rotate. At this time, the scooping rod 4 works to scoop the flying lead oxide particles in the low-temperature heating chamber 11 into the inside of the scooping rod 4, and send it to the high-temperature reduction chamber 6 through the receiving pipe 5 for reduction treatment.

[0026] like Figure 2 , Figure 4 and Figure 5 As shown, the outer surface of the first gear 33 is fixedly connected to the scooping rod 4, and the scooping rod 4 is divided into two parts: a connecting rod 41 and a scooping hopper 42. The connecting rod 41 is an L-shaped rod, and a material trough 43 is provided inside the connecting rod 41. The inner wall of the material trough 43 away from the scooping hopper 42 is fixedly connected to an electric push rod 44, and the telescopic end of the electric push rod 44 is fixedly connected to a first push plate 47. The inner wall of the material trough 43 close to the scooping hopper 42 is fixedly connected to a conductive spring 45, and the end of the conductive spring 45 away from the scooping hopper 42 is fixedly connected to the first push plate 47. The end of the material trough 43 close to the scooping hopper 42 is slidably provided with a second push plate 48. The first push plate 47 and the second push plate 48 are fixedly connected to the first push plate 47. 48 are fixedly connected by a soft steel wire, the first push plate 47 can slide in the material trough 43, and the inner circumference of the transmission wheel 37 is equidistantly provided with half-circle contraction grooves 371, and each contraction groove 371 is provided with a contraction tooth 38. When the transmission wheel 37 rotates, the contraction tooth 38 contacts the tooth row of the first gear 33, and the contraction tooth 38 is arranged on the half circle without tooth row on the outer surface of the transmission wheel 37. The contraction tooth 38 includes a pressure sensor 381 fixedly installed on the inner wall of the contraction groove 371, and a reset spring 382 and a contraction block 383 are also provided in the contraction groove 371, and the contraction block 383 is elastically connected to the pressure sensor 381 through the reset spring 382.

[0027] When the conductive spring 45 is powered off, its own elastic force is greater than the resistance of the electric push rod 44 itself. The conductive spring 45 and the electric push rod 44 are electrically connected to the data processing unit 46, and the pressure sensor 381 is electrically connected to the data processing unit 46.

[0028] When the portion with the tooth row on the surface of the transmission wheel 37 meshes with the first gear 33, the contraction tooth 38 does not contact the first gear 33, and the pressure sensor 381 has no pressure sensing at this time, so the pressure sensor 381 needs to transmit the signal to the data processing unit 46. It can be known that the material scooping rod 4 needs to be in a non-working state at this time. When the portion with the contraction tooth 38 on the surface of the transmission wheel 37 contacts the first gear 33, due to the squeezing of the tooth row on the first gear 33, the return spring 382 will shrink the contraction block 383 into the contraction groove 371, and the contraction block 383 will transmit the pressure to the pressure sensor 381 through the return spring 382, ​​and the pressure sensor 381 will transmit the signal In the data processing unit 46, it can be learned that the scooping rod 4 needs to be in working state at this time. When the above two situations are alternating, the data processing unit 46 can analyze that if the scooping rod 4 is working, the pressure sensor 381 will transmit a signal to the data processing unit 46 every second. If the data processing unit 46 can receive the signal from the pressure sensor 381 with a time interval of one second for two consecutive times within two seconds, the scooping rod 4 can be controlled to work through the data processing unit 46. If the pressure sensor 381 fails to receive the signal from the pressure sensor 381 with a time interval of one second for two consecutive times within two seconds, the scooping rod 4 will be immediately controlled to stop working. When the pressure sensor 381 senses a change in pressure, the data processing unit 46 controls the electric push rod 44 in the material trough 43 to stop working. At this time, the conductive spring 45 stops supplying power, starts to rebound and stretch. Since the elastic force of the conductive spring 45 is greater than the resistance of the electric push rod 44 when the power is off, the conductive spring 45 after power off will push the first push plate 47 to move in the direction of the electric push rod 44 until the lead oxide particles can pass through the material trough 43 and enter the material receiving tube 5. At this time, the soft steel wire is straightened, and the first push plate 47 moves with the second push plate 48 through the soft steel wire. When the second push plate 48 moves to the material receiving tube 5, the conductive spring 45 stops rebounding. During this process, the second push plate 48 pushes the lead oxide particles entering the material trough 43 to the material receiving tube 5. The lead oxide particles will fall into the material receiving tube 5 due to their own gravity, and enter the high-temperature reduction chamber 6 through the material receiving tube 5, thereby realizing the material scooping action of the scooping rod 4. If the pressure sensor 381 fails to receive the signal within two seconds, and the time interval between two adjacent transmissions from the pressure sensor 381 is one second, the pressure sensor 381 will transmit the data to the data processing unit 46, and the data processing unit 46 will stop the scooping rod 4 from working, and control the electric push rod 44 to work and extend. At the same time, the conductive spring 45 starts to shrink due to the work, and cooperates with the electric push rod 44 to make the first push plate 47 move toward the scooping hopper 42. The first push plate 47 will contact the second push plate 48 and move with the second push plate 48 until the first push plate 47 pushes the second push plate 48 to the material trough 43 as shown in FIG. Figure 5The rightmost end shown in FIG. 4 is the action of stopping the scooping rod 4; In the above process of the scooping rod 4 working, when the first push plate 47 gradually moves away from the second push plate 48, the lead oxide material can continue to enter the material trough 43 through the scooping hopper 42. In the process of the first push plate 47 moving the second push plate 48 with the soft steel wire, the second push plate 48 pushes the lead oxide material in the material trough 43 into the material receiving pipe 5, so as to realize the automatic unloading action of the scooping rod 4. When the scooping rod 4 stops working, the first push plate 47 will push the second push plate 48 to move together, and push the material remaining in the material trough 43 close to the scooping hopper 42 after the second push plate 48 moves out of the material trough 43, so as to avoid the continuous accumulation of materials in the material trough 43, blocking the material trough 43 and affecting the normal operation of the scooping rod 4.

[0029] It should be noted that there are multiple groups of scooping rods 4 arranged around the circumference, and the data processing unit 46 adopts STC89C52 single chip microcomputer, which can control the operation of the electric push rod 44 and the conductive spring 45 after processing the data, and the center part of the second push plate 48 is provided with a hole for the conductive spring 45 to move.

[0030] like Figure 2 and Figure 7 As shown in the figure, a material receiving pipe 5 is fixedly inserted in the material trough 43. When the conductive spring 45 is not energized, the first push plate 47 can connect the material trough 43 with the high-temperature reduction chamber 6. The material receiving pipe 5 is a curved pipe. A rotatable ring 8 is provided on the inner wall of the metallurgical equipment housing 1. The material receiving pipe 5 passes through the swivel 8 and is connected with the high-temperature reduction chamber 6.

[0031] A reducing gas feed pipe 61 is fixedly inserted at the upper end of the high-temperature reduction chamber 6, and a discharge pipe 62 is fixedly inserted at the lower end of the high-temperature reduction chamber 6. The reducing gas feed pipe 61 can introduce hydrogen into the high-temperature reduction chamber 6 from the outside. The hydrogen concentration in the high-temperature reduction chamber 6 is greater than the gas concentration in the low-temperature heating chamber 11. A one-way valve is arranged inside the material receiving pipe 5, and the direction of the one-way valve inside the material receiving pipe 5 allows the material to enter the high-temperature reduction chamber 6 from the material trough 43.

[0032] When the material scooping rod 4 rotates, in order to prevent the material receiving pipe 5 from breaking, the swivel 8 will be rotated through the material receiving pipe 5, and then the high-temperature reduction chamber 6 will continue to rotate through the material receiving pipe 5. Since the hydrogen concentration in the high-temperature reduction chamber 6 is greater than the gas concentration in the low-temperature heating chamber 11, it can prevent the oxygen in the low-temperature heating chamber 11 from entering the high-temperature reduction chamber 6 through the material receiving pipe 5, and the occurrence of hydrogen-oxygen explosion in the high-temperature reduction chamber 6. Since the design of a one-way valve is provided inside the material receiving pipe 5, the hydrogen in the high-temperature reduction chamber 6 will not flow back into the low-temperature heating chamber 11, and the safety of the high-temperature reduction chamber 6 and the low-temperature heating chamber 11 is guaranteed.

[0033] like Figure 2 , Figure 3 and Figure 6 As shown, a feed assembly 7 for use with a suction pipe 14 is provided inside the high-temperature reduction chamber 6, and the feed assembly 7 includes a bellows 71 movably sleeved on the outer surface of the reciprocating screw 22, a ring shaft 72 is rotatably sleeved on the non-threaded portion of the top of the reciprocating screw 22, a screw sleeve 74 is sleeved on the reciprocating screw 22, the top of the bellows 71 is fixedly connected to the ring shaft 72, the bottom end of the bellows 71 is fixedly connected to the screw sleeve 74, a hole for air intake is provided on the ring shaft 72, a one-way valve for air intake into the ring shaft 72 is provided in the hole, the ring shaft 72 is communicated with the interior of the bellows 71, an air pipe 73 is further inserted into the ring shaft 72, the bottom end of the air pipe 73 is inserted on the suction pipe 14, a one-way valve is provided inside the suction pipe 14, and the one-way valve inside the suction pipe 14 can allow the suction pipe 14 to feed material from the outside of the low-temperature heating chamber 11 to the inside of the low-temperature heating chamber 11.

[0034] When the toothless portion of the surface of the transmission wheel 37 contacts the first gear 33, the scooping rod 4 does not work at this time, and the driving motor 21 moves the screw sleeve 74 upward through the reciprocating threaded rod. The upward movement of the screw sleeve 74 squeezes the bellows 71 and causes the bellows 71 to contract. The gas inside the bellows 71 enters the suction pipe 14 through the air pipe 73. Due to the design of the one-way valve inside the suction pipe 14, the gas cannot leave the low-temperature heating chamber 11 through the suction pipe 14 at this time, and will enter the low-temperature heating chamber 11 through the suction pipe 14 again. When the gas enters the suction pipe 14, due to the high flow rate in the suction pipe 14, negative pressure is generated in the part where the gas flows through. When the flow rate increases, according to Bernoulli's principle, the kinetic energy of the fluid increases, and the static pressure decreases, which will lead to the formation of a local negative pressure area. The external gas will flow into the suction pipe 14, and bring the lead sulfide material outside the suction pipe 14 to suck the material into the low-temperature heating chamber 11; When the tooth row on the surface of the transmission wheel 37 is meshed with the first gear 33, the scooping rod 4 is working, and the driving motor 21 moves the lead screw sleeve 74 downward through the reciprocating threaded rod. The lead screw sleeve 74 will extend the bellows 71, and at the same time, the bellows 71 sucks the gas in the low-temperature heating chamber 11 into the bellows 71 through the one-way valve at the ring shaft 72, thereby achieving the effect of replenishing the gas inside the bellows 71, and can achieve no feeding during the scooping action, reducing the situation where the lead sulfide particles are not completely oxidized and are discharged into the high-temperature reduction chamber 6 by the scooping rod 4.

[0035] A metallurgical method without carbide lead metallurgical device, S1: The crushed lead sulfide and air are blown into the low-temperature heating chamber 11 with an internal temperature of 400-750°C through the suction pipe 14 and the air inlet pipe 15, and the driving motor 21 drives the shovel rod 24 to work, so that the lead sulfide materials accumulated at the bottom of the low-temperature heating chamber 11 are turned up, and the lead sulfide materials are separated from each other and scattered in the entire low-temperature heating chamber 11; S2: The lead sulfide particles turned up by the shovel rod 24 fly at the highest point of the shovel rod 24. As the suction pipe 14 and the air inlet pipe 15 work, the air that subsequently enters the low-temperature heating chamber 11 will impact the flying lead sulfide, so that the lead sulfide turned up by the shovel rod 24 is heated more evenly. The lead sulfide material that enters the low-temperature heating chamber 11 through the suction pipe 14 will contact the heated flying lead sulfide to exchange temperature, so that the lead sulfide particles that have just entered the low-temperature heating chamber 11 are preheated, which is convenient for oxidation in the low-temperature heating chamber 11. S3: The suction pipe 14 and the air inlet pipe 15 blow the lead sulfide and air into the low-temperature heating chamber 11, and the two form convection, so that the air directly impacts the lead sulfide discharged into the low-temperature heating chamber 11, further increasing the uniformity of the lead sulfide particles in the low-temperature heating chamber 11 when being heated, so that the lead sulfide particles are completely dispersed; S4: When the lead sulfide particles flying in the low-temperature heating chamber 11 are not pumped into the lead sulfide material by the suction pipe 14, the scooping rod 4 starts to scoop the completely oxidized lead oxide particles into the high-temperature reduction chamber 6 for reduction.

[0036] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A carbide-free lead metallurgical device, comprising a metallurgical equipment shell (1), wherein a low-temperature heating chamber (11) is provided in the metallurgical equipment shell (1), wherein an exhaust chamber (12) is further provided in the metallurgical equipment shell (1), wherein the exhaust chamber (12) is located at the bottom of the low-temperature heating chamber (11), wherein a high-temperature reduction chamber (6) is rotatably provided on the outer surface of the metallurgical equipment shell (1), wherein a scooping rod (4) is further provided in the low-temperature heating chamber (11), wherein the scooping rod (4) can scoop flying materials in the low-temperature heating chamber (11) into the high-temperature reduction chamber (6), wherein the device is characterized in that: The bottom of the low-temperature heating chamber (11) is provided with mesh holes through which gas can pass, the mesh holes are used to connect the low-temperature heating chamber (11) and the exhaust chamber (12), the exhaust chamber (12) is provided with an exhaust pipe (13) connected to the outside, the low-temperature heating chamber (11) is provided with a suction pipe (14) for feeding materials, the low-temperature heating chamber (11) is provided with an air intake pipe (15) for taking in air, and the low-temperature heating chamber (11) is provided with a turning component (2) for turning over the materials at the bottom of the low-temperature heating chamber (11). The lifting assembly (2) comprises a drive motor (21) fixedly mounted inside a metallurgical equipment housing (1); the output end of the drive motor (21) is fixedly connected to a reciprocating screw (22); the reciprocating screw (22) is located in a low-temperature heating chamber (11); a collar (23) is fixedly sleeved at a non-threaded portion of the bottom of the reciprocating screw (22); the outer surface of the collar (23) is fixedly connected to a shovel rod (24) for lifting the material.

2. A carbide-free lead metallurgical device according to claim 1, characterized in that: The low-temperature heating chamber (11) is provided with an intermittent assembly (3) for use with a reciprocating screw (22), the intermittent assembly (3) comprising a ring plate (31) fixedly sleeved on the outer surface of the reciprocating screw (22), the ring plate (31) having an annular cavity (32) formed therein, the annular cavity (32) having a first gear (33) rotatably sleeved on the outer surface of the reciprocating screw (22), the annular cavity (32) also having a first gear (33) fixedly sleeved on the outer surface of the reciprocating screw (22), The second gear (34) is rotatably mounted on the bottom of the inner wall of the annular cavity (32); a shaft (36) is rotatably mounted on the bottom of the inner wall of the annular cavity (32); a third gear (35) is provided on the bottom fixed sleeve of the outer surface of the shaft (36); a transmission wheel (37) is provided on the top fixed sleeve of the outer surface of the shaft (36); and the outer surface of the transmission wheel (37) is fixedly connected to a half-circle tooth row; the transmission wheel (37) meshes with the first gear (33) via the half-circle tooth row; and the second gear (34) and the third gear (35) mesh with each other.

3. A carbide-free lead metallurgical device according to claim 2, characterized in that: The outer surface of the first gear (33) is fixedly connected to a scooping rod (4), the scooping rod (4) being divided into two parts, a connecting rod (41) and a scooping hopper (42), the connecting rod (41) being an L-shaped rod, the connecting rod (41) being provided with a trough (43) inside, the inner wall of the trough (43) being away from the scooping hopper (42) being fixedly connected to an electric push rod (44), the telescopic end of the electric push rod (44) being fixedly connected to a first push plate (47), the inner wall of the trough (43) being close to the scooping hopper (42) being fixedly connected to a conductive spring (45), the end of the conductive spring (45) being away from the scooping hopper (42) being fixedly connected to a first push plate (47), and the inner wall of the trough (43) being close to the scooping hopper (42) being fixedly connected to a first A push plate (47), a second push plate (48) is slidably provided at one end of the material trough (43) close to the scoop hopper (42), the first push plate (47) and the second push plate (48) are fixedly connected by a soft steel wire, the first push plate (47) can slide in the material trough (43), the inner circumference of the transmission wheel (37) is equidistantly provided with half-circle contraction grooves (371), each of the contraction grooves (371) is provided with a contraction tooth (38), when the transmission wheel (37) rotates, the contraction tooth (38) contacts the tooth row of the first gear (33), the contraction tooth (38) is provided on the half-circle of the outer surface of the transmission wheel (37) without a tooth row, The contraction tooth (38) comprises a pressure sensor (381) fixedly mounted on the inner wall of the contraction groove (371); a return spring (382) and a contraction block (383) are also provided in the contraction groove (371); and the contraction block (383) is elastically connected to the pressure sensor (381) via the return spring (382).

4. A carbide-free lead metallurgical device according to claim 3, characterized in that: A material receiving pipe (5) is fixedly inserted in the material trough (43); when the conductive spring (45) is not energized, the first push plate (47) can connect the material trough (43) with the high-temperature reduction chamber (6); the material receiving pipe (5) is a curved pipe; a rotatable ring (8) is provided on the inner wall of the metallurgical equipment housing (1); the material receiving pipe (5) passes through the swivel (8) and is connected with the high-temperature reduction chamber (6).

5. A carbide-free lead metallurgical device according to claim 4, characterized in that: A reducing gas feed pipe (61) is fixedly inserted at the upper end of the high-temperature reduction chamber (6), and a discharge pipe (62) is fixedly inserted at the lower end of the high-temperature reduction chamber (6). The reducing gas feed pipe (61) can introduce hydrogen from the external ideal high-temperature reduction chamber (6). The hydrogen concentration in the high-temperature reduction chamber (6) is greater than the gas concentration in the low-temperature heating chamber (11). A one-way valve is provided inside the material receiving pipe (5), and the direction of the one-way valve inside the material receiving pipe (5) allows materials to enter the high-temperature reduction chamber (6) from the material trough (43).

6. A carbide-free lead metallurgical device according to claim 5, characterized in that: A feed assembly (7) for use with a suction pipe (14) is arranged inside the high-temperature reduction chamber (6), and the feed assembly (7) comprises a bellows (71) movably sleeved on the outer surface of a reciprocating screw (22), a ring shaft (72) rotatably sleeved on the non-threaded portion of the top of the reciprocating screw (22), a screw sleeve (74) sleeved on the reciprocating screw (22), the top end of the bellows (71) is fixedly connected to the ring shaft (72), the bottom end of the bellows (71) is fixedly connected to the screw sleeve (74), and the ring shaft (72) is rotatably sleeved on the top of the reciprocating screw (22). A through hole for air intake is provided on the shaft (72), and a one-way valve for air intake into the annular shaft (72) is provided in the through hole. The annular shaft (72) is communicated with the interior of the bellows (71). An air pipe (73) is also inserted into the annular shaft (72), and the bottom end of the air pipe (73) is inserted into the suction pipe (14). A one-way valve is provided inside the suction pipe (14). The one-way valve inside the suction pipe (14) allows the suction pipe (14) to feed material from the outside of the low-temperature heating chamber (11) to the inside of the low-temperature heating chamber (11).

7. A carbide-free lead metallurgical device according to claim 6, characterized in that: The shovel rod (24) is a push rod composed of multiple plow-shaped structures. The lowest point of the shovel rod (24) contacts the bottom of the low-temperature heating chamber (11). The mesh of the bottom of the low-temperature heating chamber (11) is six millimeters. The horizontal position of the suction pipe (14) is the same as the horizontal position of the highest point of the shovel rod (24).

8. A carbide-free lead metallurgical device according to claim 7, characterized in that: The air pressure of the air intake pipe (15) is greater than the gravity of the raw material particles, and the air intake pipe (15) and the material suction pipe (14) are symmetrically arranged on both sides of the metallurgical equipment housing (1).

9. A carbide-free lead metallurgical device according to claim 8, characterized in that: When the power is off, the elastic force of the conductive spring (45) is greater than the resistance of the electric push rod (44), the conductive spring (45) and the electric push rod (44) are electrically connected to the data processing unit (46), and the pressure sensor (381) is electrically connected to the data processing unit (46).

10. A metallurgical method applicable to a carbide-free lead metallurgical device according to any one of claims 1 to 9, characterized in that: S1: crushed lead sulfide and air are blown into a low-temperature heating chamber (11) with an internal temperature of 400-750°C through a suction pipe (14) and an air inlet pipe (15), and a driving motor (21) drives a shovel rod (24) to work, so that lead sulfide materials accumulated at the bottom of the low-temperature heating chamber (11) are turned up, and the lead sulfide materials are separated from each other and scattered throughout the low-temperature heating chamber (11); S2: The lead sulfide particles turned up by the shovel rod (24) fly at the highest point of the shovel rod (24). As the suction pipe (14) and the air inlet pipe (15) work, the air subsequently entering the low-temperature heating chamber (11) will impact the flying lead sulfide, so that the lead sulfide turned up by the shovel rod (24) is heated more evenly. The lead sulfide material entering the low-temperature heating chamber (11) through the suction pipe (14) will contact the heated flying lead sulfide to exchange temperature, so that the lead sulfide particles just entering the low-temperature heating chamber (11) are preheated, which is convenient for oxidation in the low-temperature heating chamber (11); S3: The suction pipe (14) and the air inlet pipe (15) blow the lead sulfide and air into the low-temperature heating chamber (11), and the two form convection, so that the air directly impacts the lead sulfide discharged into the low-temperature heating chamber (11), further increasing the uniformity of the lead sulfide particles in the low-temperature heating chamber (11) when being heated, so that the lead sulfide particles are completely dispersed; S4: When the lead sulfide particles flying in the low-temperature heating chamber (11) are not pumped into the lead sulfide material by the suction pipe (14), the scooping rod (4) starts to scoop the completely oxidized lead oxide particles into the high-temperature reduction chamber (6) for reduction.

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