Efficient oxygen immersion complete device for hydrometallurgy

Abstract

The utility model belongs to the technical field of metallurgy, and particularly discloses a hydrometallurgy efficient oxygen leaching complete device which is characterized in that reaction materials required in a reaction kettle are prepared in a liquid preparation tank and a slurrying tank, the reaction materials are conveyed into the reaction kettle through a conveying pump, a stirring assembly is started to fully mix the reaction materials, and meanwhile an oxygen supply assembly is started to supply oxygen to the reaction kettle; oxygen is supplied into the reaction kettle, stirring and oxygen supplying are carried out in the reaction kettle, after oxygen supplying is carried out for a period of time, the temperature control assembly and the condensation assembly are started, the temperature needed by the reaction kettle is set, the temperature control assembly provides a reaction temperature condition for the reaction kettle, and the condensation assembly cools and discharges harmful substances generated by leaching reaction. After the reaction kettle fully and completely finishes the leaching reaction, an operator can operate the discharging assembly to discharge the reacted material after purging the reaction kettle and the pipeline through the oxygen supply assembly, so that the reaction device which is convenient to heat and cool, accurate in temperature control, uniform in gas distribution in the kettle and high in target product yield is realized; and the production cost is greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of hydrometallurgical technology and relates to a reaction device, specifically a high-efficiency oxygen leaching complete set of equipment for hydrometallurgy. Background Technology

[0002] An alloy is a solid product with metallic properties obtained by mixing and melting one or more metals or non-metals, followed by cooling and solidification. The comprehensive recycling of waste alloys has become an economic development model, enabling resource reuse and protecting the ecological environment. Currently, hydrometallurgical processes are predominant for processing waste alloys, often employing oxidative leaching. Air and oxygen are frequently chosen as oxidants due to their readily available and inexpensive nature. Oxygen is crucial to the entire leaching oxidation reaction; the oxygen supply, its distribution in the reaction medium, bubble size, and residence time are key conditions for oxygen's effectiveness as an oxidant. Traditional hydrometallurgical leaching containers face the following technical challenges:

[0003] First, leaching vessels in the oxidative leaching method of hydrometallurgical processes typically require an oxygen supply device, mainly composed of a vent pipe and a gas distribution ring. The gas distribution ring has vent holes. Because this oxygen supply method involves placing the gas distribution ring directly in the reaction medium, the vent holes are frequently blocked by the reaction medium, leading to interruptions in oxygen delivery and affecting the continuous leaching reaction. Furthermore, there are technical problems such as large bubble size, uneven bubble dispersion, difficulty in adjusting and metering oxygen, and low oxygen utilization, all affecting the leaching effect. Second, traditional agitators use three-bladed or four-bladed paddles. When these paddles rotate, the leaching solution mainly swirls axially, with slow radial upward movement. Since alloy materials have high metal content and high specific gravity, they tend to sink. During leaching, solid particles easily deposit at the bottom of the leaching vessel, resulting in uneven dispersion and incomplete leaching. This leads to poor leaching of the alloy solids and low yield of the target product. Third, the system is equipped with a heating device, but the temperature control accuracy is inaccurate, the temperature fluctuates greatly and is unstable, the water vapor generated by the hot water cannot be recovered and reused, and the cooling water consumption is large, resulting in water waste.

[0004] Therefore, this utility model provides a high-efficiency oxygen leaching device for hydrometallurgy that is convenient for heating and cooling, has precise temperature control, uniform gas distribution inside the vessel, high oxygen utilization, strong stirring intensity, good stirring effect, uniform material dispersion, high yield of target product, and low material loss and production cost. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a high-efficiency oxygen leaching complete set of equipment, which effectively solves the problems of insufficient reaction, resulting in resource waste, inaccurate temperature control, and inconvenient operation.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A high-efficiency oxygen leaching apparatus for hydrometallurgy, characterized in that: a liquid preparation tank and a slurry tank are connected to the upper part of the reactor, a gas supply system is provided on one side of the reactor, and a temperature control system is provided on the other side of the reactor.

[0008] Preferably, the reactor includes a shell, a reactor cover, a stirring assembly, a discharge assembly, a gas distribution assembly, a slurry circulation assembly, and a condensation assembly;

[0009] The shell is disposed on the outer wall of the reactor; the lid is disposed on the upper part of the reactor; the stirring assembly is installed in the middle of the reactor cavity through the stirring port of the lid; the discharge assembly is disposed on the bottom of the reactor; the gas distribution assembly is disposed inside the reactor; the slurry circulation assembly is disposed on one side of the reactor; and the condensation assembly is disposed on the upper part of the reactor.

[0010] Preferably, a heat exchange jacket is provided outside the housing, and a magnetic level gauge is provided on one side wall of the housing;

[0011] The heat exchange jacket is provided with a heat transfer oil inlet at the bottom and a heat transfer oil outlet at the upper part of one side.

[0012] Preferably, the reactor lid is provided with a pH / ORP meter socket, a liquid inlet, an air inlet, a feed inlet, a stirring port, an exhaust port, a slurry circulation port, and a temperature measuring port. The pH / ORP meter socket of the reactor is equipped with a pH / ORP meter, and the temperature measuring port is equipped with a thermocouple.

[0013] Preferably, the stirring assembly includes a mixer and a stirring paddle. The mixer is connected to the stirring paddle. The mixer is installed outside the vessel cover. The stirring paddle is located inside the reaction vessel cavity. The stirring paddle is provided with a stirring shaft. The outer wall of the stirring shaft is welded with propeller blades. The top end of the stirring shaft is provided with a cross-shaped blade.

[0014] Preferably, the discharge assembly is provided with a bottom valve, a discharge valve, and a discharge pipe. The bottom valve is located at the bottom of the reactor, and a discharge pipe is connected to the bottom valve. A discharge valve is provided at the discharge outlet of the discharge pipe.

[0015] Preferably, the gas distribution assembly includes a gas distribution ring, with a plurality of first gas guide tubes evenly distributed on the lower surface of the gas distribution ring. The first gas guide tubes are connected to second gas guide tubes via double compression fittings. A microbubble generator is provided at the bottom end of the second gas guide tube. A second flow baffle and a first flow baffle are provided above and below the annular second gas guide tube. Both the first and second flow baffles are provided with a plurality of annular through holes. The holes on the same circumference have the same diameter, while the holes on adjacent circumferences have different diameters. The edges of the first and second flow baffles are provided with insertion holes that match the second gas guide tube, the pH / ORP meter, and the thermocouple. A gas connection connector is provided on the upper surface of the gas distribution ring, and a control valve is provided on the gas connection connector.

[0016] Preferably, the slurry circulation assembly is equipped with a flexible hose pump, the inlet of which is connected to the discharge pipe, the outlet of which is connected to the circulation pipe, the circulation pipe being connected to the slurry circulation port on the vessel lid, and control valves being provided at both the inlet and outlet of the flexible hose pump.

[0017] Preferably, the condensation assembly is provided with a heat exchanger, the top of the heat exchanger is provided with a condenser outlet pipe and a cooling water outlet pipe, the condenser outlet pipe is connected to an alkaline absorption tower, the bottom of the heat exchanger is provided with a condenser inlet pipe and a cooling water inlet pipe, and a mist eliminator and a water spray head are provided on the condenser inlet pipe, with the mist eliminator located below the water spray head.

[0018] Preferably, the gas inlet of the vessel lid is connected to a gas supply system, the gas supply system is provided with a number of high-pressure gas cylinders and gas cylinder supports, the cylinder mouth of each high-pressure gas cylinder is connected to a gas supply branch pipeline, the gas supply branch pipeline is provided with a gas buffer bend, a pressure reducer, and a branch control valve in sequence, each gas branch pipeline finally merges into a gas main pipeline, the gas main pipeline is provided with a main control valve, a flow regulating valve, an exhaust valve, and a one-way valve in sequence;

[0019] The gas cylinder support is provided with a base plate and a top plate. Vertical poles are evenly arranged between the base plate and the top plate. Several clamping chambers are formed between adjacent poles. A U-shaped clamping groove is opened on the top plate directly above each clamping chamber. A circular concave cavity for clamping high-pressure gas cylinders is provided on the base plate corresponding to each clamping chamber.

[0020] Each of the card-mounting chambers has a chain and a hook on the front end of the upright, and the bottom, middle and sides of the upright are fixedly connected with reinforcing ribs.

[0021] Preferably, the thermocouple is connected to the temperature control assembly via a sensor, and the temperature control system is equipped with a control box, which includes a control panel and an oil drain valve; the control panel displays various operating functions and data.

[0022] The control box is equipped with an expansion tank. The top of the expansion tank is equipped with an oil inlet, a temperature sensor, and an exhaust valve. An oil level gauge is installed on the side of the expansion tank. The bottom of the expansion tank is connected in sequence to a circulating pump, an internal heat exchanger, and an electric heater via pipes. A refrigeration compressor, an external heat exchanger, and a cooler are connected to the internal heat exchanger. A throttling valve is installed between the refrigeration compressor and the internal heat exchanger. The electric heater is connected to a thermocouple via a sensor. A pipe at one end of the electric heater passes through the control box and is connected to a heat transfer oil outlet pipe. A heat transfer oil inlet pipe is installed at the bottom of the control box. Temperature sensors are installed on both the heat transfer oil outlet pipe and the heat transfer oil inlet pipe. The heat transfer oil outlet pipe and the heat transfer oil inlet pipe are respectively connected to the jacketed heat transfer oil inlet pipe and the jacketed heat transfer oil outlet pipe.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1. This utility model provides a high-efficiency oxygen leaching apparatus for hydrometallurgy. A connecting joint is provided on the gas distribution ring, allowing connection to the gas supply pipeline of an external gas supply system to provide oxidant for the reaction in the reactor. This ensures that the introduced gas is evenly distributed within the gas distribution ring. Oxygen is evenly distributed circumferentially into the first and second gas guide pipes. Because the gas distribution ring and gas guide components do not come into contact with the reaction medium, blockage of the gas distribution ring by the reaction medium is avoided, preventing interruption of oxygen supply and the inability to continue the reaction.

[0025] By setting a gas microbubble generator at the lower end of the second gas guide tube, the gas introduced into the gas guide tube can generate a large number of small bubbles, which makes the gas distribution uniform, slows down the gas escape rate, and allows more gas to participate in the oxidation reaction.

[0026] By setting the first and second flow-blocking plates, the overflow rate of gas in the reaction medium can be blocked, and the residence time of gas in the reaction medium can be extended, which is beneficial to the oxidation and leaching of materials; by using double compression fittings to connect the first and second gas guide pipes, disassembly and cleaning can be easily carried out.

[0027] 2. This utility model provides a high-efficiency oxygen leaching complete set of equipment for hydrometallurgy. Multiple high-pressure gas cylinders are connected in parallel on the main gas supply pipeline to meet the gas volume required by the reactor. The gas cylinders can be quickly switched through the sub-control valve to achieve continuous gas supply. After the leaching reaction is completed, the oxygen can be switched to nitrogen through the sub-control valve to purge and replace the toxic and harmful gases such as hydrogen sulfide produced by the oxidation reaction in the reactor, so as to avoid the release of residual toxic and harmful gases that may harm the workers when the leaching liquid is discharged.

[0028] 3. This utility model provides a high-efficiency oxygen leaching complete set of equipment for hydrometallurgy. A gas flow regulating valve is installed on the main gas supply pipeline, which can adjust the flow rate of the gas as needed and measure the amount of gas supplied. A gas buffer bend is installed between the high-pressure gas cylinder and the pressure reducer, which can reduce the impact force of the high-pressure gas cylinder on the pressure reducer at the moment of opening and protect the pressure reducer. An exhaust valve is installed on the main gas supply pipeline, which can release the residual pressure in the main gas supply pipeline and branch pipelines, avoiding the safety risk of injury to operators during gas cylinder replacement operations.

[0029] 4. This utility model provides a complete set of high-efficiency oxygen leaching equipment for hydrometallurgy. The temperature control of the reactor is achieved through the heat transfer oil medium of the temperature control system. The heat transfer oil outlet pipe of the temperature control system is connected to the heat transfer oil inlet pipe of the jacket, and the heat transfer oil inlet pipe is connected to the heat transfer oil outlet pipe of the jacket. The reaction temperature of the reactor is set by the control panel. When the reactor is in the heating state, the circulation pump starts to circulate the heat transfer oil to the heat exchange jacket of the reactor. The heating is achieved by controlling the electric heater. At this time, the thermocouple temperature sensor inserted in the reactor transmits the signal to the electric heater of the temperature control system. The electric heater starts to work and heats the heat transfer oil. The heated heat transfer oil exchanges heat with the material in the reactor to achieve the heating and temperature rise of the material in the reactor. When the reactor is in the cooling state, the cooling is achieved by controlling the refrigeration compressor. The thermocouple temperature sensor inserted in the reactor transmits the signal to the compressor of the temperature control system, the refrigeration compressor starts to work, the circulation pump starts, and the heat transfer oil is circulated to the heat exchange jacket of the reactor. The refrigerant in the refrigeration compressor exchanges heat with the heat transfer oil to cool the heat transfer oil. The cooled heat transfer oil is transported to the jacket of the reactor by the circulation pump to exchange heat with the material in the reactor, thereby achieving the cooling of the material. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of a complete set of high-efficiency oxygen leaching equipment for hydrometallurgy according to the present invention;

[0031] Figure 2 This is a schematic diagram of the reactor structure of a complete set of high-efficiency oxygen leaching equipment for hydrometallurgy according to this utility model;

[0032] Figure 3 This is a schematic diagram of the reactor lid structure of a complete set of high-efficiency oxygen leaching equipment for hydrometallurgy according to this utility model;

[0033] Figure 4 This is a schematic diagram of the reactor stirring assembly of a high-efficiency oxygen leaching complete set of equipment for hydrometallurgical processes according to this utility model.

[0034] Figure 5 This is a schematic diagram of the gas distribution component structure of the reactor in a high-efficiency oxygen leaching complete set of equipment for hydrometallurgy according to this utility model;

[0035] Figure 6 This is a schematic diagram of the first flow-blocking plate structure of the reactor in a complete set of high-efficiency oxygen leaching equipment for hydrometallurgy according to this utility model.

[0036] Figure 7 This is a schematic diagram of the structure of the second baffle plate of the reactor in a complete set of high-efficiency oxygen leaching equipment for hydrometallurgy according to this utility model.

[0037] Figure 8 This is a schematic diagram of the reactor condenser assembly of a high-efficiency oxygen leaching complete set of equipment for hydrometallurgical processes according to this utility model.

[0038] Figure 9 This is a schematic diagram of the gas supply component structure of a complete set of high-efficiency oxygen leaching equipment for hydrometallurgy according to this utility model;

[0039] Figure 10 This is a schematic diagram of the gas cylinder support structure of the gas supply component of a complete set of high-efficiency oxygen leaching equipment for hydrometallurgy according to this utility model.

[0040] Figure 11 This is a schematic diagram of the temperature control component structure of a complete set of high-efficiency oxygen leaching equipment for hydrometallurgy according to this utility model;

[0041] Figure 12 This is a schematic diagram of the internal structure of the temperature control component box of a complete set of high-efficiency oxygen leaching equipment for hydrometallurgy according to this utility model;

[0042] Figure 13 This is a schematic diagram of the temperature control principle of the temperature control system of a complete set of high-efficiency oxygen leaching equipment for hydrometallurgy according to this utility model;

[0043] Figure 14 This is a schematic diagram of the control panel system display interface of a complete set of high-efficiency oxygen leaching equipment for hydrometallurgy according to this utility model.

[0044] In the figure: 1. Reactor, 11. Shell, 1101. Heat exchange jacket, 11011. Jacket heat transfer oil inlet, 11012. Jacket heat transfer oil outlet, 1102. Magnetic float level gauge, 1103. Manhole;

[0045] 2. Slurry tank; 3. Liquid preparation tank;

[0046] 12. Reactor lid; 1201. pH / ORP meter socket; 1202. Liquid inlet; 1203. Gas inlet; 1204. Feed inlet; 1205. Stirring port; 1206. Exhaust port; 1207. Slurry circulation port; 1208. Temperature measuring port.

[0047] 13. Mixing assembly; 1301. Mixer; 1302. Mixing paddle; 13021. Mixing shaft; 13022. Propeller blade; 13023. Cross-shaped blade.

[0048] 14. Discharge assembly; 1401. Bottom valve; 1402. Discharge valve; 1403. Discharge pipe;

[0049] 15. Gas distribution assembly; 1501. Gas distribution ring; 15011. First gas guide pipe; 15012. Second gas guide pipe; 15013. Double compression fitting; 15014. First baffle plate; 15015. Second baffle plate; 15016. Microbubble generator; 1502. Gas connection connector; 1503. Control valve.

[0050] 16. Slurry circulation assembly; 1601. Hose pump; 1602. Circulation pipe; 1603. Circulation inlet valve; 1604. Drain valve; 1605. Circulation outlet valve.

[0051] 17. Condensing assembly; 1701. Heat exchanger; 1702. Condenser inlet pipe; 1703. Condenser outlet pipe; 1704. Cooling water inlet pipe; 1705. Cooling water outlet pipe; 1706. Foam eliminator; 1707. Water spray head.

[0052] 4. Gas supply system, 401. Gas cylinder bracket, 4011. Base plate, 4012. Top plate, 4013. Upright pole, 4014. U-shaped clamping groove, 4015. Circular cavity, 4016. Clamping chamber, 402. High-pressure gas cylinder, 403. Gas supply branch pipeline, 404. Gas buffer bend, 405. Pressure reducer, 406. Sub-control valve, 407. Gas supply main pipeline, 408. Main control valve, 409. Flow regulating valve, 410. Exhaust valve, 411. Check valve;

[0053] 5. Temperature control components; 501. Control box; 502. Expansion tank; 5021. Oil inlet; 5022. Exhaust valve; 5023. Oil level gauge; 5024. Temperature sensor; 503. Circulating pump; 504. Internal heat exchanger; 505. Electric heater; 506. Refrigeration compressor; 507. External heat exchanger; 508. Air cooler; 509. Throttling valve; 510. Heat transfer oil inlet pipe; 511. Heat transfer oil outlet pipe; 512. Thermocouple; 513. Control panel; 514. Oil drain valve. Detailed Implementation

[0054] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0055] like Figure 5 , Figure 6 , Figure 7 The high-efficiency oxygen leaching apparatus for hydrometallurgy shown consists of a gas distribution assembly 15 fixed as a whole on the inner wall of a reactor 1. The gas distribution ring 1501 of the gas distribution assembly 15 is located at the top of the reactor 1, and its height is at least 100 mm higher than the liquid level of the solution in the reactor 1. The gas in the gas distribution assembly 15 passes through the first conduit 15011, the second conduit 15012, and the double compression fitting 15013 connecting the conduits, and overflows from the microbubble generator 15016. The microbubble generator 15016 is located above the cross blade 13023 of the stirring assembly 13. The first baffle plate 15014 and the second baffle plate 15015 of the gas distribution assembly 15 are not in contact with the stirring blade 1302 of the stirring assembly 13. The free end of the gas connection joint 1502 of the gas distribution assembly 15 is connected to the main gas supply pipeline 407 of the gas supply system 4 through the gas inlet 1203 of the reactor cover 12.

[0056] like Figure 9 , Figure 10 , Figure 11 As shown, prepare full high-pressure gas cylinders 402, each containing oxygen and nitrogen, with more oxygen cylinders than nitrogen cylinders. Arrange the high-pressure gas cylinders 402 in order of gas type from left to right on the mounting chamber 4016 of the cylinder support 401. The bottom of each high-pressure gas cylinder 402 is placed in the circular cavity 4015 of the base plate 4011 of the cylinder support 401, and the upper part is placed in the U-shaped mounting slot 4014 of the top plate 4012 of the cylinder support 401. Hang the chain on the upright 4013 on the hook of another upright 4013 adjacent to the mounting chamber 4016 to secure the high-pressure gas cylinders 402. Connect a gas buffer bend 404 to each of the gas supply branch pipes 403 of the high-pressure gas cylinders 402. The gas supply branch pipes 403 are sequentially equipped with... The system includes a pressure reducer 405 and a sub-control valve 406, which mitigate the impact on the primary pressure gauge of the gas pressure reducer when the high-pressure gas cylinder is opened, protecting the pressure gauge. Each gas supply branch line 403 ultimately merges into the main gas line 407. The main gas line 407 is equipped with a main control valve 408, a flow regulating valve 409, an exhaust valve 410, and a check valve 411. The exhaust valve 410 releases any residual pressurized gas in the main gas line 407 and the gas branch lines 403, preventing safety risks to personnel during gas cylinder replacement. The check valve 411 on the main gas line 407 prevents acidic solutions from entering the gas lines and causing corrosion inside the high-pressure gas cylinder 402 if the external high-pressure gas cylinder pressure is lower than the pressure inside the reactor 1 during operation, thus avoiding potential safety hazards.

[0057] When starting operation of reactor 1, prepare several full high-pressure gas cylinders 402 containing oxygen and nitrogen, store them on the cylinder support 401, connect all components, check the airtightness of each connection, and check that all valves of the high-pressure gas cylinders 402, including the branch control valve 406, main control valve 408, flow regulating valve 409, and exhaust valve 410, are closed. The adjusting knob of the pressure regulator 405 should be loosened. When the reaction temperature of reactor 1 reaches the process requirements and oxygen needs to be supplied to the reactor at the start of the oxidation reaction, supply oxygen to reactor 1 from the first high-pressure oxygen cylinder 402. Open the valve of the first high-pressure oxygen cylinder 402, tighten the adjusting knob of the first gas pressure regulator 405 so that its working pressure is slightly higher than the reactor pressure. Open the gas distribution valve of the first high-pressure oxygen cylinder. Control valve 406, open the main gas control valve 408, open the gas flow regulating valve 409, and adjust the flow rate to meet the reaction requirements. Oxygen sequentially passes through the above-mentioned components, from the main gas supply pipeline 407 through the gas connection joint 1502 connected to the gas inlet 1203 of the reactor cover 12, and enters the gas distribution component 15 inside the reactor 1. Oxygen sequentially passes through the gas distribution ring 1501, the first gas guide pipe 15011, and the second gas guide pipe 15012, and overflows from the microbubble 15016 into the reactor 1, fully contacting the reaction medium in the reactor 1, and undergoing an oxidation reaction at a certain temperature. As the reaction continues, the unreacted gas rises and escapes, entering the condenser inlet pipe 1702 of the condenser component 17 of the reactor condenser through the pipeline of the exhaust port 1206 of the reactor cover 12 (e.g., Figure 8 As shown in the diagram, the gas enters the tail gas alkaline absorption tower through the condenser outlet pipe 1703 after passing through the heat exchanger 1701. When the oxygen in the first high-pressure gas cylinder is insufficient, the first oxygen cylinder switching operation is performed. At this time, the valve of the second high-pressure oxygen cylinder 402 is opened, and the adjustment knob of the second gas pressure reducer 405 is tightened so that its working pressure is slightly higher than the pressure of the reactor 1. The second oxygen gas control valve 406 is opened, the first gas control valve 406 is closed, and the valve of the first high-pressure oxygen cylinder 402 is closed, completing the first oxygen cylinder switching operation. The second high-pressure oxygen cylinder 402 continues to supply oxygen to the reactor 1. The switching of oxygen cylinders is completed in this way until the oxidation reaction is completed. The main gas control valve 408 is closed, the gas control valve 406 that is currently supplying gas is closed, and the valve of the corresponding high-pressure gas cylinder 402 is closed to stop the oxygen supply.

[0058] After the leaching reaction is complete, oxygen is switched to nitrogen via gas control valve 406 to purge and replace harmful gases such as hydrogen sulfide produced by the oxidation reaction in reactor 1, preventing the release of residual harmful gases that could harm workers during leachate discharge. The valve of the first high-pressure nitrogen cylinder 402 is opened, and the first nitrogen gas pressure regulator 405 is tightened to make its working pressure slightly higher than the reactor pressure. The first nitrogen gas control valve 406 is opened, and the flow regulating valve 409 is adjusted to achieve the required flow rate. The main gas control valve 408 is opened, and nitrogen gas passes through the main control valve sequentially. The aforementioned components enter the gas distribution assembly 15 inside the reactor 1 through the gas distribution ring 1501, the first gas guide pipe 15011, and the second gas guide pipe 15012 connected to the gas inlet 1203 of the reactor cover 12 via the main gas supply pipeline 407. They then overflow from the microbubble generator 15016 into the reactor 1, passing sequentially through the gas distribution ring 1501, the first gas guide pipe 15011, and the second gas guide pipe 15012. Nitrogen gas purges and replaces the harmful gases generated by the leaching reaction in the reactor 1. The purged gas enters the condenser inlet pipe 1702 of the condenser assembly 17 through the exhaust port 1206 of the reactor cover 12 (e.g., ...). Figure 8 As shown, after being cooled by heat exchanger 1701, the gas enters the tail gas alkaline absorption tower through condenser outlet pipe 1703. Following the switching method of oxygen high-pressure oxygen cylinders, the switching operation between nitrogen cylinders is completed. After nitrogen purging is completed, the main gas control valve 408 is closed, the gas sub-control valve 406 currently supplying gas is closed, the corresponding high-pressure gas cylinder 402 valve is closed, the gas supply is stopped, all high-pressure gas cylinder 402 valves are closed, all gas sub-control valves 406 are opened, the exhaust valve 410 is opened to release the residual gas in the gas supply sub-pipeline 403 and the main gas supply pipeline 407, then the exhaust valve 410 is closed, the adjustment knobs of all gas pressure regulators 405 are loosened, and the gas sub-control valve 406 and the flow regulating valve 409 are closed.

[0059] like Figure 8 As shown, during the leaching reaction, the condenser assembly 17 operates. The cooling water inlet pipe 1704 and cooling water outlet pipe 1705 of the condenser assembly 17 are opened, allowing flowing cooling water to pass through the inlet pipe 1704. The exhaust gas generated from the reactor 1 enters the inlet pipe 1702 of the condenser assembly 17 above the reactor 1 through the exhaust port 1206 of the reactor cover 12. The slurry droplets carried by the hot exhaust gas are trapped on the demister 1706 installed on the condenser inlet pipe 1702. The water spray head 1707 above the demister 1706 washes the droplets back into the reactor 1. The hot exhaust gas undergoes heat exchange in the heat exchanger 1701 of the condenser assembly 17, while the cooled exhaust gas enters the alkali absorption tower through the condenser outlet pipe 1703 and is finally discharged. The cooling water is discharged from the cooling water outlet pipe 1705, preventing environmental pollution from the discharged waste gas and wastewater.

[0060] like Figure 2 , Figure 11 , Figure 12As shown, check that the drain valve 514 is closed, open the vent valve 5022 of the expansion tank 502, and inject heat transfer oil into the expansion tank 502 through the oil inlet 5021. Observe the oil level gauge 5023; the heat transfer oil is at the optimal level. Turn on the power switch of the control panel 513 of the control box 501 of the temperature control component 5, operate the control panel 513, and press the start button for the circulation pump 503. The system begins to vent, the oil level in the expansion tank 502 begins to drop, and the heat transfer oil enters the circulation pump 503, passes through the internal heat exchanger 504 and the electric heater 505 in sequence, and exits from the heat transfer oil outlet pipe 511. The oil is piped to the heat exchange jacket 1101 of the reactor 1 jacket through the inlet pipe 11011 and injected into the heat exchange jacket 1101. The oil level in the expansion tank is monitored at all times, and heat transfer oil is added in time through the oil injection port 5021. Throughout the process, the oil level in the expansion tank 502 is kept at the optimal level until the heat exchange jacket 1101 of the reactor 1 is full of heat transfer oil. The heat transfer oil comes out from the jacket heat transfer oil outlet pipe 11012 and is piped to the heat transfer oil inlet pipe 510 of the temperature control component 5. Then it enters the circulation pump 503 to form a closed loop. The venting is completed. If the oil level in the expansion tank 502 exceeds the optimal level, the oil drain valve 514 is opened to drain the excess oil.

[0061] The reaction temperature of reactor 1 is achieved through the heat transfer oil medium of temperature control component 5. The heat transfer oil outlet pipe 511 of temperature control component 5 is connected to the heat transfer oil inlet pipe 11011 of the jacket, and the heat transfer oil inlet pipe 510 is connected to the heat transfer oil outlet pipe 11012 of the jacket. The required reaction temperature of reactor 1 is set via control panel 513. When reactor 1 needs to be heated, circulation pump 503 is started to circulate the heat transfer oil to the heat exchange jacket 1101 of the reactor, forming a closed loop. The electric heater 505 is then controlled to achieve the desired temperature. The temperature is now rising. The thermocouple 512 inserted in the reactor 1 transmits a signal to the electric heater 505 of the temperature control component through the temperature sensor. The electric heater 505 heats the heat transfer oil. The oil level is observed by the oil level gauge 5023. The heated heat transfer oil is transported to the heat exchange jacket 1101 through the circulation pump 503 to exchange heat with the material in the reactor 1, thereby heating the material in the reactor. When the temperature of the material in the reactor reaches the process set temperature value, the electric heater 505 stops working, and the material temperature is in a relatively stable state.

[0062] When reactor 1 is in cooling mode, the control panel 513 is operated to control the refrigeration compressor 506 to achieve cooling. The heat transfer oil is circulated to the heat exchange jacket 1101 of the reactor. The thermocouple 512 temperature sensor inserted in reactor 1 transmits the signal to the refrigeration compressor 506 of the temperature control component 5. The refrigeration compressor 506 starts working. The refrigerant in the refrigeration compressor 506 exchanges heat with the heat transfer oil through the internal heat exchanger 504 to cool the heat transfer oil. The cooled heat transfer oil is transported to the heat exchange jacket 1101 of the reactor by the circulation pump 503 to react with the heat transfer oil. The material inside the reactor 1 undergoes heat exchange to achieve cooling. The refrigerant in the refrigeration compressor 506 exchanges heat with the heat transfer oil through the internal heat exchanger 504, causing the temperature to rise and the liquid refrigerant to turn into vapor. The flow cross-section of the refrigerant is suddenly contracted through the throttle valve 509, which increases the refrigerant flow rate and reduces the pressure. The refrigerant then enters the external heat exchanger 507 to exchange heat with the outside environment. The air cooler 508 forces heat exchange with the external heat exchanger 507, which lowers the temperature of the refrigerant entering the refrigeration compressor. The refrigerant changes from a gaseous state to a liquid state, improving the refrigeration efficiency of the refrigeration compressor 506.

[0063] like Figure 1 and Figure 2 As shown, the bottom valve 1401 and discharge valve 1402 of reactor 1 are closed. The alloy material to be leached, along with other substances, is added to the slurry tank 2 according to the process ratio. The agitator of the slurry tank 2 is started to slurry the material. The slurried material is then pumped into reactor 1 through the inlet 1204 of the reactor cover 12 via a pipeline. Simultaneously, the leaching agent required for leaching is added to the liquid preparation tank 3 according to the process requirements. The agitator of the liquid preparation tank 3 is started to mix the leaching agent evenly. The leaching agent is then pumped into reactor 1 through the inlet 1202 of the reactor cover 12 via a pipeline. The stirring assembly 13 of reactor 1 is started. The mixer 1301 drives the stirring shaft 13021 on the stirring paddle 1302 to rotate in the solution. The propeller blade 13022 and the cross-shaped blade 13023 can stir and suspend the heavy alloy solid particles deposited at the bottom of the reactor 1 in the solution, so that the leached alloy solid particles are stirred and dispersed evenly. According to the process requirements, the reactor 1 is heated by the temperature control component 5, and the required reaction oxidant is supplied to the reactor 1 through the gas supply system 4, so as to realize the reaction in the reactor 1.

[0064] During the leaching reaction, the slurry circulation assembly 14 operates simultaneously. The circulation material inlet valve and outlet valve are opened, the discharge valve 1402 and the drain valve 1604 are closed, the bottom valve 1401 of the discharge assembly 14 is opened, and the hose pump 1601 is started. The material in the reactor 1 flows out from the bottom valve 1401 and re-enters the reactor 1 through the circulation pipe 1602 via the hose pump 1601 and the slurry circulation port 1207 of the reactor cover 12. It comes into countercurrent contact with the oxygen that has escaped from the reactor and has not participated in the reaction, which is conducive to the full progress of the leaching reaction.

[0065] After the leaching reaction is complete, the leached material is discharged through the discharge assembly 14. The circulating material inlet valve 1603 is closed, the bottom valve 1401 of the reactor is opened, and the discharge valve 1402 is opened to discharge the material from the reactor. The discharge valve 1402 and the circulating material outlet valve 1605 are then closed, and the circulating material inlet valve 1603, the drain valve 1604, and the bottom valve 1401 are opened. The hose pump 1601 is then started, allowing the material in reactor 1 to be transported over a long distance and discharged from the drain outlet for use where needed. Simultaneously, wastewater generated from cleaning reactor 1, slurry tank 2, and liquid preparation tank 3 can be discharged through the slurry circulation assembly 16 and the discharge assembly 14.

[0066] like Figure 2 , Figure 3 As shown, a pH / ORP meter 12011 is installed at the pH / ORP port 1201 of the reactor lid 12, which can detect the pH value and redox potential of the material in the reactor in real time, determine the degree of leaching reaction and redox reaction, and make corresponding process control adjustments; a flap level gauge 1102 is installed on the outer wall of the heat exchange jacket 1101 of the reactor 1, which can monitor the liquid level in the reactor 1 in real time.

[0067] In use, prepare the required reaction materials for the reactor 1 in advance in the mixing tank 3 and the slurry tank 2. After the reaction materials are transported to the reactor 1 by the transfer pump, turn on the stirring component 13 to fully mix the reaction materials. At the same time, turn on the oxygen supply component 4 to supply oxygen to the reactor 1. Stirring and oxygen supply are carried out in the reactor. After a period of oxygen supply, start the temperature control component 5 and the condensation component 17 to set the required temperature of the reactor. The temperature control component 5 provides the reaction temperature conditions for the reactor 1. The condensation component 17 cools and discharges the harmful substances produced by the leaching reaction. After the reactor 1 has fully and completely completed the leaching reaction, the operator can purge the reactor 1 and pipelines through the oxygen supply component, and then operate the discharge component 14 to discharge the discharged material.

[0068] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency oxygen leaching apparatus for hydrometallurgy, comprising a reaction vessel, characterized in that: The upper part of the reactor (1) is connected to a liquid preparation tank (3) and a slurry tank (2). A gas supply system (4) is provided on one side of the reactor (1), and a temperature control component (5) is provided on the other side of the reactor (1). The reactor (1) includes a shell (11), a reactor cover (12), a stirring assembly (13), a discharge assembly (14), a gas distribution assembly (15), a slurry circulation assembly (16), and a condensation assembly (17). The shell (11) is located on the outer wall of the reactor (1); the lid (12) is located on the upper part of the reactor (1); the stirring assembly (13) is installed in the middle of the inner cavity of the reactor (1) through the stirring port (1205) of the lid (12); the discharge assembly (14) is located at the bottom of the reactor (1); the gas distribution assembly (15) is located inside the reactor (1); the slurry circulation assembly (16) is located on one side of the reactor (1); and the condensation assembly (17) is located on the upper part of the reactor (1).

2. The high-efficiency oxygen leaching apparatus for hydrometallurgy according to claim 1, characterized in that: A heat exchange jacket (1101) is provided outside the housing (11), and a magnetic float level gauge (1102) is provided on one side wall of the housing (11). The heat exchange jacket (1101) is provided with a jacket heat transfer oil inlet (11011) at the bottom and a jacket heat transfer oil outlet (11012) at the upper part of one side. The reactor lid (12) is provided with a pH / ORP meter socket (1201), a liquid inlet (1202), an air inlet (1203), a feed inlet (1204), a stirring port (1205), an exhaust port (1206), a slurry circulation port (1207), and a temperature measuring port (1208). The pH / ORP meter socket (1201) of the reactor is equipped with a pH / ORP meter, and the temperature measuring port (1208) is equipped with a thermocouple (512).

3. The high-efficiency oxygen leaching apparatus for hydrometallurgy according to claim 1, characterized in that: The stirring assembly (13) includes a stirrer (1301) and a stirring paddle (1302). The stirrer (1301) is connected to the stirring paddle (1302). The stirrer (1301) is installed on the outside of the reactor cover (12). The stirring paddle (1302) is located in the inner cavity of the reactor (1). The stirring paddle (1302) is provided with a stirring shaft (13021). The outer wall of the stirring shaft (13021) is welded with a propeller blade (13022). The top of the stirring shaft (13021) is provided with a cross-shaped blade (13023).

4. A high-efficiency oxygen leaching apparatus for hydrometallurgy according to claim 1, characterized in that: The discharge assembly (14) is provided with a bottom valve (1401), a discharge valve (1402), and a discharge pipe (1403). The bottom valve (1401) is located at the bottom of the reactor (1). The discharge pipe (1403) is connected to the bottom valve (1401). The discharge valve (1402) is provided at the discharge outlet of the discharge pipe (1403).

5. A high-efficiency oxygen leaching apparatus for hydrometallurgy according to claim 1, characterized in that: The gas distribution assembly (15) includes a gas distribution ring (1501). A plurality of first gas guide tubes (15011) are evenly distributed on the lower surface of the gas distribution ring (1501). Each first gas guide tube (15011) is connected to a second gas guide tube (15012) via a double-ferrule connector (15013). A microbubble generator (15016) is provided at the bottom end of the second gas guide tube (15012). A second flow baffle (15015) and a first flow baffle (15014) are provided above and below the second gas guide tube (15012). The first flow baffle (15015)... The first baffle plate (15014) and the second baffle plate (15015) are provided with several annular through holes. The diameter of the holes on the same circumference is the same, while the diameter of the holes on adjacent circumferences is different. The edges of the first baffle plate (15014) and the second baffle plate (15015) are provided with insertion holes that match the second gas guide pipe (15012), the pH / ORP meter and the thermocouple (512). The upper surface of the gas distribution ring (1501) is provided with a gas connection connector (1502), and a control valve (1503) is provided on the gas connection connector (1502).

6. A high-efficiency oxygen leaching apparatus for hydrometallurgy according to claim 1, characterized in that: The slurry circulation assembly (16) is equipped with a hose pump (1601). The inlet of the hose pump (1601) is connected to the discharge pipe (1403), and the outlet of the hose pump (1601) is connected to the circulation pipe (1602). The circulation pipe (1602) is connected to the slurry circulation port (1207) of the reactor cover (12). The inlet and outlet of the hose pump (1601) are both equipped with control valves.

7. A high-efficiency oxygen leaching apparatus for hydrometallurgy according to claim 1, characterized in that: The condensing assembly (17) is equipped with a heat exchanger (1701). The top of the heat exchanger (1701) is equipped with a condenser outlet pipe (1703) and a cooling water outlet pipe (1705). The condenser outlet pipe (1703) is connected to an alkaline absorption tower. The bottom of the heat exchanger (1701) is equipped with a condenser inlet pipe (1702) and a cooling water inlet pipe (1704). The (1702) is equipped with a mist eliminator (1706) and a water spray head (1707). The mist eliminator (1706) is located below the water spray head (1707).

8. A high-efficiency oxygen leaching apparatus for hydrometallurgy according to claim 1, characterized in that: The gas inlet (1203) of the reactor lid (12) is connected to a gas supply system (4). The gas supply system (4) is equipped with several high-pressure gas cylinders (402) and gas cylinder supports (401). The gas cylinder (402) is connected to a gas supply branch pipeline (403). A gas buffer bend (404), a pressure reducer (405), and a sub-control valve (406) are sequentially installed on the gas supply branch pipeline (403). The gas supply branch pipeline (403) eventually merges into the gas main pipeline (407). A main control valve (408), a flow regulating valve (409), an exhaust valve (410), and a check valve (411) are sequentially installed on the gas main pipeline (407). The gas cylinder support (401) is provided with a base plate (4011) and a top plate (4012). Vertical poles (4013) are evenly arranged between the base plate (4011) and the top plate (4012). The poles (4013) form a number of clamping chambers. A U-shaped clamping groove (4014) is opened on the top plate (4012) directly above each clamping chamber. A circular cavity (4015) for clamping high-pressure gas cylinders (402) is provided on the base plate (4011) corresponding to each clamping chamber. Each of the card-mounted chambers has a chain and a hook on the front end of the upright (4013), and the bottom, middle and sides of the upright (4013) are fixedly connected with reinforcing ribs.

9. A high-efficiency oxygen leaching apparatus for hydrometallurgy according to claim 2, characterized in that: The thermocouple (512) is connected to the temperature control assembly (5) via a sensor. The temperature control assembly (5) is equipped with a control box (501). The control box (501) is equipped with a control panel (513) and an oil drain valve (514). The control panel (513) displays operating functions and data. The control box (501) is equipped with an expansion tank (502). The top of the expansion tank (502) is equipped with an oil inlet (5021), a temperature sensor (5024), and an exhaust valve (410). An oil level gauge (5023) is provided on the side of the expansion tank (502). The bottom of the expansion tank (502) is connected in sequence by a circulating pump (503), an internal heat exchanger (504), and an electric heater (505) through pipes. A refrigeration compressor (506), an external heat exchanger (507), and a cooler (508) are connected to the internal heat exchanger (504). The refrigeration compressor (506) and the internal heat exchanger (504) are connected to each other. A throttle valve (509) is provided between them. The electric heater (505) is connected to the thermocouple (512) through a sensor. A pipe at one end of the electric heater (505) passes through the control box (501) and is provided with a heat transfer oil outlet pipe (511). A heat transfer oil inlet pipe (510) is provided at the bottom of the control box (501). Temperature sensors are provided on both the heat transfer oil outlet pipe (511) and the heat transfer oil inlet pipe (510). The heat transfer oil outlet pipe (511) and the heat transfer oil inlet pipe (510) are respectively connected to the jacket heat transfer oil inlet (11011) and the jacket heat transfer oil outlet (11012).

Images