Treatment device for lead copper matte oxygen pressure acid leaching residues

Abstract

The invention relates to the technical field of hydrometallurgy, and discloses a lead matte oxygen pressure acid leaching residue treatment device which comprises a shell, a shell, a reaction kettle, a double-layer reverse stirring assembly and a solid-liquid separation assembly. The independent driving assemblies are arranged on the upper side and the lower side of the reaction kettle to respectively drive the double-layer reverse stirring assemblies to rotate reversely, so that a high-shear flow field is formed in the kettle, and solid-liquid-gas three-phase mixing and material transfer are enhanced; the circulating cooling assembly is arranged between the shell and the reaction kettle, so that strong heat release in the reaction process is accurately controlled; the heat recovery conveying assembly is arranged and cooperates with an energy recovery system composed of the back pressure type hydraulic turbine and the heat storage box, and reaction products and heat energy and pressure energy generated in the operation process of equipment are recovered and used for preheating new materials. Through the integrated structural design, the problems of non-uniform material mixing, inaccurate reaction temperature control and low energy recovery rate in the traditional process are solved, and the treatment efficiency and the economical efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrometallurgy, in particular to a device for treating lead matte oxygen pressure acid leaching slag. BACKGROUND

[0002] In the field of hydrometallurgy, the treatment of complex multi-metal oxygen pressure acid leaching slag generated in the lead matte smelting process is an important technical means to recover valuable metals such as copper, zinc, lead, silver, etc. in it. The existing treatment process usually involves grinding the solid acid leaching slag into slurry, then passing oxygen into the high-temperature and high-pressure reactor for acid leaching, and finally separating the reaction products to extract valuable metal leaching solution.

[0003] However, in the existing technical practice, there are several interrelated technical defects in this process. The high-pressure reactor commonly used at present is mostly a single-shaft stirring structure. This mechanical stirring method is difficult to meet the two requirements of uniform suspension of solid particles and efficient gas dispersion in the whole area of the reactor when dealing with high-concentration, high-density, and multi-solid-phase complex materials. This often leads to mixed dead angles in the reactor, and the material at the bottom of the reactor is prone to settlement and hardening, while the gas phase in the upper part may form a "gas channeling" phenomenon due to bubble coalescence, significantly reducing the utilization rate of oxygen and the efficiency of mass transfer, and thus affecting the leaching rate and final leaching rate of the target metal.

[0004] In addition, oxygen pressure acid leaching is a strong exothermic reaction, and the temperature control of the reaction process is extremely strict. Traditional reactors usually rely on internal cooling coils or external jackets for heat removal. The internal cooling coil is prone to fouling in a high-temperature and high-pressure environment with strong corrosion and strong wear, which leads to a sharp decrease in heat transfer efficiency and is difficult to clean and maintain. The traditional external jacket has limited heat transfer area and heat transfer coefficient, and in the face of intense reaction heat, the response is lagging, making it difficult to achieve precise control of the reaction temperature, which easily leads to temperature overheating, not only promoting the generation of impurities such as jarosite, affecting subsequent separation, but also posing a serious safety risk of thermal runaway.

[0005] At the same time, the entire treatment process is usually composed of multiple independent large equipment units such as grinding, slurry preparation, reaction, pressure reduction, and separation, which are connected by a complex piping system. This kind of separate process layout not only occupies a large area, increases the capital investment and energy consumption of material transportation, but also in the pressure reduction and cooling link of high-temperature and high-pressure slurry, a large amount of heat and pressure energy cannot be effectively recovered, resulting in significant energy waste, thereby increasing the overall production and operation cost. SUMMARY

[0006] In view of the deficiencies of the prior art, the lead matte oxygen pressure acid leaching residue processing device is provided, which solves the problems of uneven mixing of materials and insufficient reaction, difficulty in precise temperature control of the strong exothermic reaction process by the traditional cooling method, low energy recycling rate and low equipment integration caused by the separation of the process flow.

[0007] To achieve the above object, the present application is implemented by the following technical solutions: a lead matte oxygen pressure acid leaching residue processing device, comprising: The shell, the shell and the reaction kettle, the circulation cooling assembly between the shell and the reaction kettle is used for cooling the slurry in the reaction kettle; The two protective housings are fixedly connected to the upper and lower sides of the reaction kettle, and the driving assemblies are arranged in the two protective housings, which are used to drive the double-layer reverse stirring assembly to operate and fully stir the slurry in the reaction kettle, and the two driving assemblies drive the double-layer reverse stirring assembly to stir in opposite directions in the upper and lower layers of the reaction kettle, forming a high-shear-rate annular flow field between the two layers of paddles, and the bubble and particle agglomerates flowing through this area are further dispersed under the action of the fluid velocity gradient; The double-layer reverse stirring mechanism comprises reverse stirring assemblies one and two, and the reverse stirring assemblies one and two each comprise a connecting rod, which is rotationally connected to the inner side of the reaction kettle, and two stirring blades are fixedly connected to the outer wall of the connecting rod, and the rotating directions of the two groups of stirring blades are opposite; The heat recovery and conveying assembly is arranged on the inner side of the two ends of the shell, which is used to absorb the heat of the slurry at the bottom of the shell and convey it to the top of the shell to preheat the slurry, preheat the new material, thereby reducing the demand for external heat source of the system and improving the overall energy utilization efficiency of the device. The solid-liquid separation assembly is arranged at the bottom of the shell through two fixed rods, which facilitates the separation of the liquid product and the solid product at the same time.

[0008] Preferably, the driving assembly comprises a worm gear, the worm gear is rotationally connected to the inner side of the protective housing, the protective housing is rotationally connected with a worm shaft on the inner side, the protective housing is fixedly connected with a driving motor two on the side, the worm shaft is fixedly connected to the output end of the driving motor two, the rotation of the worm gear drives the reverse stirring assembly one to rotate, and the connecting rod is fixedly connected to the side of the worm gear.

[0009] Preferably, the circulating cooling assembly comprises a plurality of heat dissipation plates, the plurality of heat dissipation plates are fixedly connected to the side of the shell and the side of the reaction kettle in an up-down distribution respectively, a water tank is fixedly connected to the side of the shell, and water pumps are fixedly connected to the two sides of the water tank.

[0010] Preferably, the heat recovery conveying assembly comprises a conveying pipe, the conveying pipe is fixedly connected to the inside of the preheating cavity at both ends, a plurality of supports are fixedly connected to the outside of the shell, the conveying pipe is arranged at the inside of both ends of the plurality of supports respectively, and connecting pipes are fixedly connected to both ends of the reaction kettle.

[0011] Preferably, the solid-liquid separation assembly comprises a separation shell, the separation shell is fixedly connected to the side of the two fixed rods, a collecting box is slidably connected to the inside of the separation shell, a plurality of holes are formed in the bottom inside of the collecting box and the separation shell, a separation hopper is fixedly connected to the bottom of the separation shell, and a fixed pipe is fixedly connected to the bottom of the separation hopper.

[0012] Preferably, the separation shell is fixedly connected to sliding chute blocks at both sides, two rotating clamping rods are rotatably connected to the side of the collecting box, the ends of the two rotating clamping rods are clamped to the inside of the two sliding chute blocks respectively, and a handle is fixedly connected to the side of the collecting box.

[0013] Preferably, the preheating cavity is fixedly connected to a support frame at the top, the support frame is fixedly connected to a screening feed hopper at the side, the screening feed hopper is fixedly connected to a crushing and screening shell at the side, a rotor inner wall is rotatably connected to the inside of the crushing and screening shell, a driving motor one is fixedly connected to the bottom side of the crushing and screening shell, the rotor inner wall is fixedly connected to the output end of the driving motor one, a protection shell is fixedly connected to the bottom side of the crushing and screening shell, and the protection shell is fixedly connected to the outside of the driving motor one.

[0014] Preferably, the top of the crushing and screening shell is fixedly connected with a support frame, the side of the support frame is fixedly connected with a feeding pipe one, the top of the feeding pipe one is provided with a handle, the bottom of the feeding pipe one is fixedly connected with a feeding pipe two, and the feeding pipe two is arranged in the inside of the crushing and screening shell.

[0015] Preferably, the bottom of the preheating cavity is fixedly connected with a fixed pipe, the fixed pipe is connected with the connecting pipe at the top of the reaction kettle through a flange ring, and a fixed pipe is also fixedly connected between the heat storage box and the separation shell, and the inside of the plurality of fixed pipes is provided with a valve.

[0016] Preferably, the side of the reaction kettle is fixedly connected with a limiting rod, both the connecting rods are rotationally connected to the inside of the limiting rod, both sides of the shell are provided with two ventilation openings in the inside, the bottom of the shell is fixedly connected with two bases, and the inside of the shell is fixedly connected with a drain pipe and the water tank.

[0017] The application provides a device for treating lead matte oxygen pressure acid leaching residue. 1、The application sets independent driving assemblies on both sides of the reaction kettle, respectively drives the double-layer reverse stirring assemblies to rotate in opposite directions, forms a high-shear-rate annular flow field in the kettle, strengthens the material transfer efficiency of gas, liquid and solid three phases, enables solid particles to be fully suspended, increases the contact area of gas and slurry, thereby improves the chemical reaction rate and the completeness of the reaction, and effectively prevents the material from settling or caking in the kettle.

[0018] 2、The application sets a heat recovery conveying assembly and an energy recovery system composed of a back pressure type hydraulic turbine, a heat storage box and corresponding pipelines, realizes comprehensive utilization of multiple paths of energy, recovers the high-temperature heat energy and part of the pressure energy of the reaction product, recovers the heat generated in the grinding process at the bottom of the device, and concentrates the recovered energy on the new incoming material in the preheating cavity, thereby significantly reduces the external energy input demand of the system and improves the overall thermal economy of the device.

[0019] 3、The application integrates multiple processing units such as material crushing, preheating, reaction, pressure reduction recovery and solid-liquid separation in one overall device through structural design. Compared with the traditional separate equipment layout, the structure of the application is more compact, reduces the equipment floor area, and simplifies the material conveying pipelines between units, which is conducive to realizing continuous, stable and automatic control, and improves the overall integration and operation efficiency of the production process. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a perspective view of the application; Figure 2 It is a schematic view of the ventilation opening of the application; Figure 3 is a schematic diagram of a drain pipe of the present invention; Figure 4 Schematic diagram of a stirring blade of the present invention; Figure 5 is a schematic diagram of a heat dissipation plate of the present invention; Figure 6 is a schematic diagram of the stent of the present invention; Figure 7 is a schematic diagram of a limiting rod of the present invention; Figure 8 is a schematic diagram of a collection box of the present invention; Figure 9 A schematic diagram of a separation bucket of the present invention; Figure 10 is a schematic diagram of a connecting pipe of the present invention; Figure 11 Schematic diagram of the support frame of the present invention.

[0021] Among them, 1. Outer shell; 2. Ventilation port; 3. Crushing and screening shell; 4. Feed pipe 1; 5. Base; 6. Collection box; 7. Separation shell; 8. Insulation shell; 9. Heat storage box; 10. Back-pressure hydraulic turbine; 11. Connecting pipe; 12. Bracket; 13. Shell; 14. Delivery pipe; 15. Preheating chamber; 16. Support frame; 17. Feed pipe 2; 18. Inner wall of rotor; 19. Screening feed hopper; 20. Protective shell; 21. Drive motor 1; 22. Protective shell; 23. Drive motor 2; 24. Worm; 25. Connecting rod; 26. Reactor; 27. Heat sink; 28. Stirring blade; 29. ​​Fixed pipe; 30. Valve; 31. Flange ring; 32. Worm gear; 33. Fixed rod; 34. Separation bucket; 35. Handle; 36. Slide block; 37. Rotating lever; 38. Hole; 39. Limit rod; 40. Water tank; 41. Water pump; 42. Circulation pipe; 43. Drain pipe. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the present specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Please see the attached Figure 1 - Attachment Figure 9 The embodiment of the present invention provides a treatment device for lead matte oxygen pressure acid leaching residue, comprising a housing 1, a shell 13 and a reactor 26, wherein a cooling component is circulated between the shell 13 and the reactor 26 for cooling the slurry inside the reactor 26; The protection shell 22 is fixedly connected to the upper and lower sides of the reaction kettle 26, and the driving assembly is arranged in the protection shell 22, which is used to drive the double-layer reverse stirring assembly to fully stir the slurry in the reaction kettle 26. The two driving assemblies drive the double-layer reverse stirring assembly to stir in opposite directions in the upper and lower layers of the reaction kettle 26, and form a high-shear-rate annular flow field between the two layers of paddles. The bubbles and particle agglomerates flowing through this area are further dispersed under the action of the fluid velocity gradient. The double-layer reverse stirring mechanism includes a reverse stirring assembly one and a reverse assembly two. The reverse stirring assembly one and the reverse assembly two each include a connecting rod 25 rotationally connected to the inner side of the reaction kettle 26. The outer wall of the connecting rod 25 is fixedly connected with two stirring blades 28. The rotating directions of the two groups of stirring blades 28 are opposite. The inner side of the two ends of the shell 1 is provided with a heat recovery conveying assembly, which is used to absorb the heat of the slurry at the bottom of the shell 1 and convey it to the top of the shell 1 to preheat the slurry. The new material is preheated, thereby reducing the demand for external heat source of the system and improving the overall energy utilization efficiency of the device. The bottom of the shell 1 is provided with a solid-liquid separation assembly through two fixed rods 33, which facilitates the separation of liquid products and solid products while producing them.

[0024] Specifically, the shell 1 is used to provide structural support for the entire device and accommodate all internal components. The reaction kettle 26 is used to provide a closed high-temperature and high-pressure environment as the core place for chemical reactions. The shell 13 is wrapped outside the reaction kettle 26 and forms a channel between the side wall of the reaction kettle 26 for the circulation of the cooling assembly. The circulation cooling assembly is used to remove the heat generated by the reaction kettle 26 during the reaction process through the circulation of the cooling medium to maintain a stable reaction temperature. The protection shell 22 is used to protect the internal driving assembly and isolate it from the reaction environment inside the reaction kettle 26. The driving assembly is used to generate and transmit driving torque to drive the double-layer reverse stirring assembly in the upper and lower layers. The double-layer reverse stirring assembly rotates in opposite directions through the connecting rod 25 and the stirring blade 28 to mix and disperse the slurry in the reaction kettle 26. The heat recovery conveying assembly is used to convey the heat absorbed passively at the bottom of the device to the top feeding area to preheat the new material. The solid-liquid separation assembly is used to separate the slurry after the reaction into solid and liquid phases to obtain the final product.

[0025] Please refer to the accompanying Figure 4 and the accompanying Figure 7The driving assembly comprises a worm wheel 32 rotatably connected to the inner side of the protective shell 22, a worm 24 rotatably connected to the inner side of the protective shell 22, a driving motor 23 fixedly connected to the side of the protective shell 22, and the worm 24 fixedly connected to the output end of the driving motor 23. The rotation of the worm wheel 32 drives the reverse stirring assembly to rotate. A connecting rod 25 is fixedly connected to the side of the worm wheel 32.

[0026] Specifically, the protective shell 22 is used to provide a mounting base and structural protection for the internal components of the driving assembly; the driving motor 23 is used to output power after being started; the worm 24 is used to transmit the rotary motion output by the driving motor 23 to the worm wheel 32; the worm wheel 32 is used to mesh with the worm 24, change the transmission direction, decelerate and increase torque, and drive the connecting rod 25 to rotate; and the connecting rod 25 is used as a transmission shaft of the reverse stirring assembly to transmit the rotation of the worm wheel 32 to the stirring blade 28, thereby realizing the stirring of the materials inside the reaction kettle 26.

[0027] Please refer to the accompanying drawings Figure 2 The accompanying drawings Figure 6 The circulating cooling assembly comprises a plurality of heat dissipation plates 27 fixedly connected to the side of the shell 13 and the reaction kettle 26 in an up-down distribution manner, a water tank 40 fixedly connected to the side of the shell 13, and two water pumps 41 fixedly connected to the two sides of the water tank 40. The output end of one of the water pumps 41 is fixedly connected to the inner side of the shell 13, the output end of the other water pump 41 is fixedly connected with the delivery pipeline 14, the other end of the delivery pipeline 14 is fixedly connected with the preheating cavity 15, the other end of the preheating cavity 15 is also fixedly connected with the delivery pipeline 14, and the end of the delivery pipeline 14 is fixedly connected to the inner side of the shell 13.

[0028] Specifically, the plurality of heat dissipation plates 27 are used to increase the contact area between the outer wall of the reaction kettle 26 and the cooling medium in the shell 13, so as to improve the heat exchange efficiency; the water tank 40 is used to store the liquid medium required for circulation cooling, and provide a liquid source for the two water pumps 41; one of the water pumps 41 is used to provide power to pump the cooling liquid in the water tank 40 into the annular space between the shell 13 and the reaction kettle 26, so as to forcibly circulate the liquid to absorb the heat of the reaction kettle 26; the other water pump 41 pumps the liquid in the water tank 40 to the preheating cavity 15 through the delivery pipeline 14 and finally returns to the inside of the shell 13. The delivery pipeline 14 provides a fluid passage for the path, and the preheating cavity 15 provides a place for the newly incoming materials to exchange heat.

[0029] Please refer to the accompanying drawings Figure 2 The accompanying drawings Figure 3 and the accompanying drawings Figure 10The heat recovery and delivery component includes a delivery pipe 14, both ends of which are fixedly connected to the inside of the preheating chamber 15, a plurality of brackets 12 are fixedly connected to the outside of the shell 13, and the delivery pipes 14 are respectively arranged on the inner sides of both ends of the plurality of brackets 12, and the reactor 26 is fixedly connected to connecting pipes 11 at both ends, one of the connecting pipes 11 is fixedly connected to the back-pressure hydraulic turbine 10 at the bottom, and the output end of the back-pressure hydraulic turbine 10 is fixedly connected to a heat storage tank 9, which is fixedly connected to the side of the back-pressure hydraulic turbine 10, and an insulation shell 8 is fixedly connected to the outside of the heat storage tank 9, one of the delivery pipes 14 is wound between the insulation shell 8 and the heat storage tank 9, and a water pump 41 is fixedly connected to the inside of the insulation shell 8, and the output end of the water pump 41 is fixedly connected to a circulation pipe 42, and the other end of the circulation pipe 42 is fixedly connected to the inside of the preheating chamber 15.

[0030] Specifically, the conveying pipe 14 is used to form two independent heat transfer paths, wherein the conveying pipe 14 vertically arranged on the bracket 12 is used to passively transfer heat from the bottom of the shell 1 to the preheating chamber 15 at the top, while the conveying pipe 14 wrapped around the heat storage tank 9 is used to actively recover heat; the bracket 12 is used to provide mechanical fixation and support for the vertically arranged conveying pipe 14; the connecting pipe 11 is used to discharge the material inside the reactor 26 to the downstream equipment; the back-pressure hydraulic turbine 10 is used to convert the pressure energy of the material into mechanical energy while reducing the pressure of the material; the heat storage tank 9 is used to receive the high-temperature material flowing out of the hydraulic turbine 10 and serve as a heat source for active heat recovery; the insulation shell 8 is used to wrap the heat storage tank 9 to reduce its heat loss to the surrounding environment; the water pump 41 is used to provide circulation power for the heat transfer medium in the active heat recovery loop; the circulation pipe 42 is used to transport the heat transfer medium that obtains heat from the heat storage tank 9 back to the preheating chamber 15 to complete the heat transfer.

[0031] Please see the attached Figure 8 and attached Figure 9 The solid-liquid separation assembly includes a separation shell 7, which is fixedly connected to the sides of two fixed rods 33. A collection box 6 is slidably connected to the inside of the separation shell 7. Multiple holes 38 are formed on the inside of the bottom of the collection box 6 and the separation shell 7. A separation bucket 34 is fixedly connected to the bottom of the separation shell 7, and a fixed tube 29 is fixedly connected to the bottom of the separation bucket 34. Slide blocks 36 are fixedly connected to both sides of the separation shell 7. Two rotating clamping rods 37 are rotatably connected to the side of the collection box 6. The ends of the two rotating clamping rods 37 are respectively clamped to the inside of the two slide blocks 36. A handle 35 is fixedly connected to the side of the collection box 6.

[0032] Specifically, the separation shell 7 is used to provide a closed cavity for the solid-liquid separation process, and serves as a support structure of the collection box 6; the collection box 6 is used to contain the slurry to be separated, and intercepts the solid phase product through the hole 38 at the bottom thereof; the hole 38 is used to allow the liquid phase product to pass through, while retaining the solid phase product in the collection box 6, thereby achieving solid-liquid separation; the separation hopper 34 is used to collect the liquid phase product flowing out of the hole 38, and guide it to the fixed pipe 29; the fixed pipe 29 is used to discharge the separated liquid phase product; the chute block 36 cooperates with the rotating clamping rod 37 to form a sliding guide mechanism, facilitating the loading and unloading of the collection box 6; the handle 35 is used to facilitate the manual pulling of the collection box 6 by the operator, so as to collect the solid phase product.

[0033] Please refer to the accompanying drawings Figure 4 and the accompanying drawings Figure 11 The top of the preheating cavity 15 is fixedly connected with a support frame 16, the side surface of the support frame 16 is fixedly connected with a screening feed hopper 19, the side surface of the screening feed hopper 19 is fixedly connected with a crushing and screening shell 3, the inner side of the crushing and screening shell 3 is rotatably connected with a rotor inner wall 18, the bottom side of the crushing and screening shell 3 is fixedly connected with a driving motor one 21, the rotor inner wall 18 is fixedly connected with the output end of the driving motor one 21, and the bottom side of the crushing and screening shell 3 is fixedly connected with a protective shell 20, which is fixedly connected with the outer side of the driving motor one 21. The top of the crushing and screening shell 3 is fixedly connected with a support frame 16, the side surface of the support frame 16 is fixedly connected with a feed pipe one 4, the top of the feed pipe one 4 is provided with a handle 35, the bottom of the feed pipe one 4 is fixedly connected with a feed pipe two 17, and the feed pipe two 17 is arranged inside the crushing and screening shell 3.

[0034] Specifically, the support frame 16 is used to fix the crushing and screening shell 3 and the screening feed hopper 19 on the top of the preheating cavity 15, providing structural support; the screening feed hopper 19 is used to receive external solid raw materials and guide them into the crushing and screening shell 3 below; the crushing and screening shell 3 serves as a grinding cavity, providing a running space for the rotor inner wall 18 and containing materials; the driving motor one 21 is used to provide power after being started, driving the rotor inner wall 18 fixedly connected with the output end thereof to rotate; the rotor inner wall 18 is used to rotate under the drive of the driving motor one 21, crushing particles by acting on solid materials; the protective shell 20 is used to cover and protect the driving motor one 21; the feed pipe one 4 and the feed pipe two 17 are used to deliver external liquid to the inside of the crushing and screening shell 3, mixing with the solid raw materials to form slurry, wherein the handle 35 facilitates the operation of the feed pipe one 4; the preheating cavity 15 is used to collect the slurry processed by the crushing and screening shell 3, and preheat the slurry therein.

[0035] Please refer to the accompanying drawings Figure 1 , the accompanying drawings Figure 2 and the accompanying drawings Figure 3The bottom of the preheating cavity 15 is fixedly connected with a fixed pipe 29, the fixed pipe 29 is connected with the connecting pipe 11 at the top of the reaction kettle 26 through a flange ring 31, the heat storage box 9 and the separation shell 7 are also fixedly connected with the fixed pipe 29, the inner side of the plurality of fixed pipes 29 is provided with a valve 30. The reaction kettle 26 is fixedly connected with a limiting rod 39 on the side, the two connecting rods 25 are rotatably connected on the inner side of the limiting rod 39, the inner side of the two sides of the shell 1 is provided with two ventilation openings 2, the bottom of the shell 1 is fixedly connected with two bases 5, and the inner side of the shell 1 is fixedly connected with a drain pipe 43.

[0036] Specifically, the fixed pipe 29 is used to transport materials between different units of the device, for example, to transport the slurry processed by the preheating cavity 15 to the reaction kettle 26, and to transport the material cooled by the heat storage box 9 to the separation shell 7; the flange ring 31 is used to provide a detachable sealing connection, reliably connecting the fixed pipe 29 from the preheating cavity 15 with the connecting pipe 11 of the reaction kettle 26; the valve 30 is used to control the fluid on-off of the fixed pipe 29, to realize the start-stop control of the material flow of each unit; the limiting rod 39 is used to provide a fixed rotating support point for the connecting rod 25, to ensure that the stirring assembly stably rotates in the reaction kettle 26; the ventilation opening 2 is used for air exchange between the inside and outside of the shell 1, to assist heat dissipation; the base 5 is used to support the weight of the entire device, to ensure that the equipment is stably placed; and the drain pipe 43 is used to drain the liquid accumulated in the water tank 40 or the shell 1, to maintain or clean.

[0037] Working principle: when the lead matte oxygen pressure acid leaching slag treatment device runs, first, the raw materials are treated through the crushing and screening and preheating system, then the treated slurry is transported to the reaction kettle for chemical reaction, and finally the products after reaction are separated by the solid-liquid separation assembly after energy recovery and pressure reduction cooling.

[0038] In the feeding and preheating stage, the material enters the crushing and screening shell 3 inside through the screening feeding hopper 19. The driving motor one 21 is started, and the output end drives the rotor inner wall 18 to rotate, wet grinding and crushing the entering solid material to prepare slurry. The prepared slurry enters the preheating cavity 15. The cavity is preheated through two independent heat transfer paths: first, the heat recovery and conveying assembly arranged inside the shell 1 passively absorbs the heat generated at the bottom of the shell 1 due to grinding, and conveys it to the preheating cavity 15 at the top of the shell 1; second, the water pump 41 connected to the inner side of the heat preservation shell 8 is started, the heat transfer medium is heated through the conveying pipeline 14 wound outside the heat storage box 9, and then conveyed to the preheating cavity 15 through the circulating pipeline 42 to actively heat the slurry.

[0039] In the core reaction stage, the preheated slurry enters the reactor 26 through the fixed tube 29 and the flange ring 31 at the bottom. Meanwhile, the two drive assemblies inside the protective shell 22 on both sides of the reactor 26 are activated. The drive motor 23 in each drive assembly drives the worm 24 to rotate, which engages the worm gear 32 to rotate. The rotation of the worm gear 32 drives the connecting rod 25 and the stirring blade 28 connected thereto to rotate. Due to the independent operation of the upper and lower drive assemblies, the upper reverse stirring assembly 1 and the lower reverse assembly 2 rotate in opposite directions. This reverse stirring forms a high-shear-rate annular flow field between the two layers of stirring blades 28, dispersing bubble and particle agglomerates in the reactor and increasing the contact area of the gas-liquid-solid three phases. The heat generated during the reaction will cause the temperature of the reactor 26 to rise. At this time, the circulating cooling assembly is activated, and the cooling water in the water tank 40 is pumped out by the water pump 41, flows through the space between the shell 13 and the reactor 26, exchanges heat with the multiple heat dissipation plates 27 fixed on the sides of the two, absorbs the heat of the reactor 26, and then returns to the water tank 40, so as to control the temperature of the reactor 26 within the set range.

[0040] In the pressure reduction recovery and solid-liquid separation stage, the high-temperature and high-pressure slurry after the reaction enters the back pressure hydraulic turbine 10 from the bottom of the reactor 26 through the connecting pipe 11, and the pressure energy of the slurry is converted into mechanical energy at the same time, and the pressure of the slurry is reduced. The slurry after pressure reduction enters the heat storage tank 9 for heat storage, and the heat is used for heat recovery in the preheating stage. Subsequently, the slurry enters the solid-liquid separation assembly arranged at the bottom of the outer shell 1 through the fixed tube 29. After the slurry enters the separation shell 7, the liquid product passes through the collection tank 6 and the multiple holes 38 at the bottom of the separation shell 7, collects in the separation hopper 34 below, and is discharged by the fixed tube 29. The solid product is trapped inside the collection tank 6. The operator can hold the handle 35 to make the rotating rod 37 slide in the sliding groove block 36, and remove the collection tank 6 from the separation shell 7 to complete the collection of the solid product. The on-off control of the entire process is controlled by the valves 30 arranged inside each fixed tube 29.

[0041] Although embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for treating lead matte oxygen pressure acid leaching residue, characterized in that: include: An outer shell (1), a shell (13) and a reactor (26), wherein a cooling component is circulated between the shell (13) and the reactor (26) for cooling the slurry inside the reactor (26); The reactor (26) is fixedly connected to protective shells (22) on both upper and lower sides. Drive components are provided inside the two protective shells (22) for driving the double-layer inverted stirring components to fully stir the slurry inside the reactor (26). The two drive components drive the double-layer inverted stirring components to stir the reactor (26) in two layers in opposite directions, forming a high shear rate annular flow field in the area between the two layers of blades. The bubbles and particle agglomerates flowing through this area are further dispersed by the fluid velocity gradient. The double-layer inverted stirring mechanism comprises an inverted stirring component 1 and an inverted stirring component 2, wherein the inverted stirring component 1 and the inverted stirring component 2 both comprise a connecting rod (25), wherein the connecting rod (25) is rotatably connected to the inner side of the reactor (26), and the outer wall of the connecting rod (25) is fixedly connected to two stirring blades (28), and the two groups of stirring blades (28) rotate in opposite directions; Heat recovery and delivery components are provided on the inner sides of both ends of the shell (1) for absorbing the heat of the slurry at the bottom of the shell (1) and delivering it to the top of the shell (1) to preheat the slurry and preheat new materials, thereby reducing the system's demand for external heat sources and improving the overall energy utilization efficiency of the device; The bottom of the housing (1) is provided with a solid-liquid separation component via two fixing rods (33), so as to facilitate the production of liquid products and solid products while achieving separation of the products.

2. The device for treating lead matte oxygen pressure acid leaching residue according to claim 1, characterized in that: The driving assembly includes a worm wheel (32), the worm wheel (32) is rotatably connected to the inner side of the protective shell (22), the inner side of the protective shell (22) is rotatably connected to a worm (24), the side of the protective shell (22) is fixedly connected to a second driving motor (23), the worm (24) is fixedly connected to the output end of the second driving motor (23), the rotation of the worm wheel (32) drives the reverse stirring assembly to rotate together, and the connecting rod (25) is fixedly connected to the side of the worm wheel (32).

3. The device for treating lead matte oxygen pressure acid leaching residue according to claim 1, characterized in that: The circulating cooling assembly includes a plurality of heat sinks (27), which are respectively distributed up and down and fixedly connected to the sides of the shell (13) and the reactor (26). A water tank (40) is fixedly connected to the side of the shell (13), and water pumps (41) are fixedly connected to both sides of the water tank (40). The output end of one of the water pumps (41) is fixedly connected to the inner side of the shell (13), and the output end of the other water pump (41) is fixedly connected to a delivery pipe (14). The other end of the delivery pipe (14) is fixedly connected to a preheating chamber (15). The inner side of the other end of the preheating chamber (15) is also fixedly connected to a delivery pipe (14). The end of the delivery pipe (14) is fixedly connected to the inner side of the shell (13).

4. The device for treating lead matte oxygen pressure acid leaching residue according to claim 3, characterized in that: The heat recovery and delivery assembly comprises a delivery pipe (14), both ends of which are fixedly connected to the interior of the preheating chamber (15), a plurality of brackets (12) are fixedly connected to the outside of the shell (13), and the delivery pipe (14) is respectively arranged on the inner sides of both ends of the plurality of brackets (12), and both ends of the reactor (26) are fixedly connected to connecting pipes (11), and a back-pressure hydraulic turbine (10) is fixedly connected to the bottom of one of the connecting pipes (11), and the output of the back-pressure hydraulic turbine (10) A heat storage tank (9) is fixedly connected to the end thereof, the heat storage tank (9) is fixedly connected to the side of the back-pressure hydraulic turbine (10), the outer side of the heat storage tank (9) is fixedly connected to a heat insulation shell (8), one of the delivery pipes (14) is wound between the heat insulation shell (8) and the heat storage tank (9), the inner side of the heat insulation shell (8) is fixedly connected to a water pump (41), the output end of the water pump (41) is fixedly connected to a circulation pipe (42), and the other end of the circulation pipe (42) is fixedly connected to the inner side of the preheating chamber (15).

5. The device for treating lead matte oxygen pressure acid leaching residue according to claim 4, characterized in that: The solid-liquid separation assembly comprises a separation shell (7), the separation shell (7) being fixedly connected to the sides of the two fixed rods (33), the inner side of the separation shell (7) being slidably connected to a collection box (6), the inner sides of the bottoms of the collection box (6) and the separation shell (7) being provided with a plurality of holes (38), the bottom of the separation shell (7) being fixedly connected to a separation bucket (34), and the bottom of the separation bucket (34) being fixedly connected to a fixed pipe (29).

6. The device for treating lead matte oxygen pressure acid leaching residue according to claim 5, characterized in that: Both sides of the separation shell (7) are fixedly connected to chute blocks (36), and the side of the collection box (6) is rotatably connected to two rotating clamping rods (37), and the ends of the two rotating clamping rods (37) are respectively clamped on the inner sides of the two chute blocks (36), and the side of the collection box (6) is fixedly connected to a handle (35).

7. The device for treating lead matte oxygen pressure acid leaching residue according to claim 3, characterized in that: The top of the preheating chamber (15) is fixedly connected to a support frame (16), the side of the support frame (16) is fixedly connected to a screening feed hopper (19), the side of the screening feed hopper (19) is fixedly connected to a crushing and screening shell (3), the inner side of the crushing and screening shell (3) is rotatably connected to an inner wall of a rotor (18), the bottom side of the crushing and screening shell (3) is fixedly connected to a driving motor 1 (21), the inner wall of the rotor (18) is fixedly connected to the output end of the driving motor 1 (21), the bottom side of the crushing and screening shell (3) is fixedly connected to a protective shell (20), and the protective shell (20) is fixedly connected to the outside of the driving motor 1 (21).

8. The device for treating lead matte oxygen pressure acid leaching residue according to claim 7, characterized in that: The top of the crushing and screening shell (3) is fixedly connected to a support frame (16), the side of the support frame (16) is fixedly connected to a feed pipe 1 (4), the top of the feed pipe 1 (4) is provided with a handle (35), the bottom of the feed pipe 1 (4) is fixedly connected to a feed pipe 2 (17), and the feed pipe 2 (17) is provided inside the crushing and screening shell (3).

9. The device for treating lead matte oxygen pressure acid leaching residue according to claim 5, characterized in that: A fixed pipe (29) is fixedly connected to the bottom of the preheating chamber (15), and the fixed pipe (29) is connected to the connecting pipe (11) at the top of the reactor (26) via a flange ring (31). A fixed pipe (29) is also fixedly connected between the heat storage tank (9) and the separation shell (7), and valves (30) are provided on the inner sides of the plurality of fixed pipes (29).

10. The device for treating lead matte oxygen pressure acid leaching residue according to claim 3, characterized in that: The reactor (26) is fixedly connected to a limiting rod (39) on its side, and the two connecting rods (25) are both rotatably connected to the inner side of the limiting rod (39). Two vents (2) are provided inside both sides of the shell (1). Two bases (5) are fixedly connected to the bottom of the shell (1). A drain pipe (43) is fixedly connected to the water tank (40) and the inner side of the shell (1).

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