Efficient oxygen immersion complete device for hydrometallurgy

Abstract

The invention belongs to the technical field of metallurgy, and particularly discloses a wet metallurgy efficient oxygen leaching complete device which is characterized in that reaction materials needed 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, an oxygen supply assembly is started to supply oxygen into the reaction kettle, and the reaction kettle is fully stirred; oxygen is supplied while stirring is conducted in the reaction kettle, after oxygen supply is conducted 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, the condensation assembly cools and discharges harmful substances generated in the leaching reaction, and after the leaching reaction is fully and completely completed in the reaction kettle, the reaction kettle is started; after an operator purges the reaction kettle and the pipeline through the oxygen supply assembly, the material discharging assembly can be operated to discharge reacted materials, so that the reaction device which is convenient to heat and cool, accurate in temperature control, uniform in distribution of gas in the kettle and high in target product yield is realized, and the production cost is greatly reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydrometallurgy, and relates to a reaction device, in particular to a high-efficiency oxygen leaching complete set of devices for hydrometallurgy. Background Art

[0002] An alloy is a solid product with metallic properties obtained by mixing and melting one metal with another metal or several metals or non-metals and then cooling and solidifying. The comprehensive recycling of waste alloys has become an economic development model, which can not only make resources reused, but also protect the ecological environment. At present, most of the treatment processes for waste alloys are hydrometallurgy, and the oxidation leaching method is often used. Since air and oxygen are convenient in source and low in price, they are often used as the first choice of oxidants. Oxygen is the key to the entire leaching oxidation reaction. The key conditions for oxygen as an oxidant in the oxidation reaction include the oxygen supply amount, the distribution of oxygen in the reaction medium, the bubble size, and the residence time. The traditional hydrometallurgy leaching containers have the following technical problems: First, the hydrometallurgy leaching containers for the oxidation leaching method usually need to be equipped with an oxygen supply device, which mainly consists of an oxygen supply pipe and a gas distribution ring. The gas distribution ring is provided with ventilation holes. Since this oxygen supply method directly places the gas distribution ring in the reaction medium for oxygen supply, the ventilation holes on the gas distribution ring are often blocked by the reaction medium, resulting in the interruption of oxygen delivery, thus affecting the continuous progress of the leaching reaction process. At the same time, there are also technical problems such as large bubble sizes generated by the introduced oxygen, uneven bubble dispersion, inconvenient adjustment and measurement of oxygen, and low oxygen utilization rate, which affect the leaching effect. Second, the traditional stirring paddle uses a paddle-type three-blade stirring paddle or a paddle-type four-blade stirring paddle. When the paddle rotates, the leaching solution mainly has an axial swirl, and the floating speed in the radial direction is slow. Since the alloy material has a high metal content and a large specific gravity, it is easy to sink. During the leaching process, solid particles are easily deposited at the lower part of the leaching container, with uneven dispersion, resulting in incomplete leaching reaction, poor leaching effect of the alloy solid material, and low yield of the target product. Third, the hydrometallurgy leaching containers are all equipped with heating devices. The traditional heating method is mainly jacket water bath heating, which has problems such as slow heating and cooling speeds, the heating temperature not reaching the requirements of the leaching process, inaccurate temperature control accuracy, large temperature fluctuations, instability, the water vapor generated by hot water cannot be recycled, and large consumption of cooling water, resulting in waste of water resources.

[0003] Therefore, the present invention provides a hydrometallurgy high-efficiency oxygen leaching device with convenient heating and cooling, accurate temperature control, uniform gas distribution in the kettle, high oxygen utilization rate, strong stirring intensity, good stirring effect, uniform dispersion of materials, high yield of the target product, low material loss and low production cost. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides an efficient oxygen leaching complete set of devices for hydrometallurgy, effectively solving problems such as insufficient reaction, resulting in waste of resources, inaccurate temperature control, and inconvenient operation.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: An efficient oxygen leaching complete set of devices for hydrometallurgy, characterized in that: a liquid preparation tank and a pulping tank are connected to the upper part of the reaction kettle, a gas supply system is arranged on one side of the reaction kettle, and a temperature control system is arranged on the other side of the reaction kettle.

[0006] Preferably, the reaction kettle includes a shell, a reaction kettle cover, a stirring assembly, a discharging assembly, a gas distribution assembly, a slurry circulation assembly, and a condensation assembly; The shell is arranged on the outer wall of the reaction kettle; the kettle cover is arranged on the upper part of the reaction kettle, the stirring assembly is installed in the middle of the inner cavity of the reaction kettle through the stirring port of the kettle cover, the discharging assembly is arranged at the bottom of the reaction kettle, the gas distribution assembly is arranged inside the reaction kettle, and the slurry circulation assembly is arranged on one side of the reaction kettle; the condensation assembly is arranged on the upper part of the reaction kettle.

[0007] Preferably, a heat exchange jacket is arranged outside the shell, and a magnetic flap level gauge is arranged on one side wall of the shell; A heat transfer oil inlet is arranged at the bottom of the heat exchange jacket, and a heat transfer oil outlet is arranged at the upper part of one side of the heat exchange jacket.

[0008] Preferably, a PH / ORP meter socket, a liquid inlet, a gas inlet, a feed inlet, a stirring port, an exhaust port, a slurry circulation port, and a temperature measuring port are arranged on the kettle cover, a PH / ORP meter is installed at the PH / ORP meter socket of the reaction kettle, and a thermocouple is installed at the temperature measuring port.

[0009] Preferably, the stirring assembly includes a stirrer and a stirring paddle, the stirrer is connected to the stirring paddle, the stirrer is installed outside the kettle cover, the stirring paddle is located in the inner cavity of the reaction kettle, the stirring paddle is provided with a stirring shaft, a spiral blade is welded on the outer wall of the stirring shaft, and a cross-shaped blade is arranged at the top of the stirring shaft.

[0010] Preferably, the discharging assembly is provided with a bottom valve, a discharging valve, and a discharging pipe, the bottom valve is arranged at the bottom of the reaction kettle, the discharging pipe is connected to the bottom valve, and a discharging valve is arranged at the discharge port of the discharging pipe.

[0011] Preferably, the gas distribution assembly includes a gas distribution ring, a plurality of first air ducts are evenly distributed on the lower surface of the gas distribution ring, the first air duct is connected to the second air duct via a double ferrule joint, a microbubble device is provided at the bottom end of the second air duct, a second baffle and a first baffle are provided above and below the annular second air duct, a plurality of annular through holes are provided on the first baffle and the second baffle, the holes on the same circular line have the same diameter, and the holes on adjacent circular lines have different diameters, the edges of the first baffle and the second baffle are provided with jacks matching the second air duct, the PH / ORP meter and the thermocouple, a gas connection joint is provided on the upper surface of the gas distribution ring, and a control valve is provided on the gas connection joint.

[0012] Preferably, the slurry circulation assembly is provided with a hose pump, the inlet of the hose pump is connected to the discharge pipe, the outlet of the hose pump is connected to the circulation pipe, the circulation pipe is connected to the slurry circulation port of the kettle cover, and the inlet and outlet of the hose pump are both provided with control valves.

[0013] Preferably, the condensation component 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 alkali solution absorption tower, the bottom of the heat exchanger is provided with a condenser inlet pipe and a cooling water inlet pipe, the condenser inlet pipe is provided with a foam catcher and a water spray head, and the foam catcher is located below the water spray head.

[0014] Preferably, the gas inlet of the kettle cover is connected to a gas supply system, and the gas supply system is provided with a plurality of high-pressure gas cylinders and gas cylinder brackets, and the bottle mouth of each high-pressure gas cylinder is connected to a gas supply branch pipeline, and the gas supply branch pipeline is sequentially provided with a gas buffer elbow, a pressure reducer, and a sub-control valve, and each gas branch pipeline finally merges into a gas main pipeline, and the gas main pipeline is sequentially provided with a main control valve, a flow regulating valve, an exhaust valve, and a one-way valve; The gas cylinder support is provided with a bottom plate and a top plate, vertical poles are evenly arranged between the bottom plate and the top plate, and a plurality of card-mounting chambers are formed between the adjacent poles. A U-shaped card-mounting groove is provided on the corresponding top plate directly above each card-mounting chamber, and a circular concave cavity for card-mounting a high-pressure gas cylinder is respectively provided on the bottom plate corresponding to each card-mounting chamber; A chain and a hook are arranged on the vertical pole at the front end of each clamping chamber, and reinforcing rib plates are fixedly connected to the bottom end, the middle end and both sides of the vertical pole.

[0015] Preferably, the thermocouple is connected to the temperature control component through a sensor, and the temperature control system is provided with a control box, and the control box is provided with a control panel and an oil drain valve; the control panel displays various operating functions and data; The control box is provided with an expansion tank. An oil filling port, a temperature sensor and an exhaust valve are arranged at the top of the expansion tank. An oil level gauge is arranged on the side of the expansion tank. The bottom of the expansion tank is sequentially connected with a circulation pump, an internal heat exchanger and an electric heater through pipelines. A refrigeration compressor, an external heat exchanger and a cooling fan are connected to the internal heat exchanger. A throttle valve is arranged between the refrigeration compressor and the internal heat exchanger. The electric heater is connected with a thermocouple through a sensor. A heat-conducting oil outlet pipe is arranged at one end of the electric heater, and the pipeline passes through the control box body. A heat-conducting oil inlet pipe is arranged at the bottom of the control box body. Temperature sensors are arranged on both the heat-conducting oil outlet pipe and the heat-conducting oil inlet pipe. The heat-conducting oil outlet pipe and the heat-conducting oil inlet pipe are respectively connected with a jacket heat-conducting oil inlet pipe and a jacket heat-conducting oil outlet pipe.

[0016] The beneficial effects of the present invention are as follows: 1. The present invention provides an efficient oxygen leaching complete set of devices for hydrometallurgy. Connecting joints are arranged on the gas distribution ring, which can be connected with the gas supply pipeline of the external gas supply system to provide an oxidant for the reaction in the reaction kettle, and the introduced gas can be evenly distributed in the gas distribution ring. Oxygen is evenly distributed around the gas distribution ring into the first gas guide pipe and the second gas guide pipe. Since the gas distribution ring and the gas guide component do not contact the reaction medium, the gas distribution ring is prevented from being blocked by the reaction medium, resulting in the interruption of oxygen delivery and the inability of the reaction to continue. By arranging a gas microbubble generator at the lower end of the second gas guide pipe, the gas introduced into the gas guide pipe can generate a large number of small-sized bubbles, making the gas distribution uniform and the gas escape speed slow down, so that more gas participates in the oxidation reaction. By arranging a first baffle plate and a second baffle plate, the overflow rate of the gas in the reaction medium can be blocked, and the residence time of the gas in the reaction medium can be prolonged, which is beneficial to the oxidative leaching of the material. By using a double ferrule joint to connect the first gas guide pipe and the second gas guide pipe, it is convenient for disassembly and cleaning.

[0017] 2. The present invention provides an efficient oxygen leaching complete set of devices for hydrometallurgy. A plurality of high-pressure gas cylinders are connected in parallel on the gas supply main pipeline to meet the gas volume required by the reaction kettle. The quick switching between the gas cylinders is realized through a sub-control valve, and the continuity of gas supply is realized. 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 generated by the oxidation reaction in the reaction kettle, and the release of the residual toxic and harmful gases during the discharge of the leaching solution is avoided from harming the operators.

[0018] 3. The present invention provides a complete set of high-efficiency oxygen leaching devices for hydrometallurgy. A gas flow regulating valve is provided on the main gas supply pipeline, which can adjust the flow rate of the introduced gas according to requirements and can measure the amount of the introduced gas. A gas buffer elbow is provided between the high-pressure gas cylinder and the pressure reducer, which can slow down the impact force of the high-pressure gas cylinder on the gas pressure reducer at the moment of opening and protect the pressure reducer. An exhaust valve is provided on the main gas supply pipeline, which can release the residual pressure in the main gas supply pipeline and branch pipelines of the supply gas, avoiding the safety risk of injuring operators during the operation of replacing the gas cylinder.

[0019] 4. The present invention provides a complete set of high-efficiency oxygen leaching devices for hydrometallurgy. The temperature control of the reaction kettle is achieved through the medium heat-conducting oil of the temperature control system. The outlet pipe of the heat-conducting oil of the temperature control system is connected to the inlet pipe of the heat-conducting oil of the jacket, and the inlet pipe of the heat-conducting oil is connected to the outlet pipe of the heat-conducting oil of the jacket. The reaction temperature of the reaction kettle is set through the control panel. When the reaction kettle is in the heating state, the circulation pump starts, and the heat-conducting oil is circulated to the heat exchange jacket of the reaction kettle. The temperature rise is achieved by controlling the electric heater. At this time, the thermocouple temperature sensor inserted in the reaction kettle transmits the signal to the electric heater of the temperature control system, and the electric heater starts to work to heat the heat-conducting oil. The heated heat-conducting oil exchanges heat with the materials in the reaction kettle to realize the heating and temperature rise of the materials in the reaction kettle. When the reaction kettle is in the cooling state, the temperature drop is achieved by controlling the refrigeration compressor. The thermocouple temperature sensor inserted in the reaction kettle transmits the signal to the compressor of the temperature control system, and the refrigeration compressor starts to work. The circulation pump starts, and the heat-conducting oil is circulated to the heat exchange jacket of the reaction kettle. The refrigerant in the refrigeration compressor exchanges heat with the heat-conducting oil to cool the heat-conducting oil. The cooled heat-conducting oil is transported to the jacket of the reaction kettle through the circulation pump to exchange heat with the materials in the reaction kettle to realize the cooling and temperature drop of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall structural schematic diagram of a complete set of high-efficiency oxygen leaching devices for hydrometallurgy according to the present invention; Figure 2 is the structural schematic diagram of the reaction kettle of a complete set of high-efficiency oxygen leaching devices for hydrometallurgy according to the present invention; Figure 3 is the structural schematic diagram of the reaction kettle cover of a complete set of high-efficiency oxygen leaching devices for hydrometallurgy according to the present invention; Figure 4 is the structural schematic diagram of the stirring assembly of the reaction kettle of a complete set of high-efficiency oxygen leaching devices for hydrometallurgy according to the present invention; Figure 5 is the structural schematic diagram of the gas distribution assembly of the reaction kettle of a complete set of high-efficiency oxygen leaching devices for hydrometallurgy according to the present invention; Figure 6 is the structural schematic diagram of the first baffle of the reaction kettle of a complete set of high-efficiency oxygen leaching devices for hydrometallurgy according to the present invention; Figure 7Schematic diagram of the second baffle structure of the reactor of a high-efficiency oxygen leaching complete set of devices for hydrometallurgy according to the present invention; Figure 8 Schematic diagram of the condensation component structure of the reactor of a high-efficiency oxygen leaching complete set of devices for hydrometallurgy according to the present invention; Figure 9 Schematic diagram of the gas supply component structure of a high-efficiency oxygen leaching complete set of devices for hydrometallurgy according to the present invention; Figure 10 Schematic diagram of the gas cylinder support structure of the gas supply component of a high-efficiency oxygen leaching complete set of devices for hydrometallurgy according to the present invention; Figure 11 Schematic diagram of the temperature control component structure of a high-efficiency oxygen leaching complete set of devices for hydrometallurgy according to the present invention; Figure 12 Schematic diagram of the internal structure of the box body of the temperature control component of a high-efficiency oxygen leaching complete set of devices for hydrometallurgy according to the present invention; Figure 13 Schematic diagram of the temperature control principle of the temperature control system of a high-efficiency oxygen leaching complete set of devices for hydrometallurgy according to the present invention; Figure 14 Schematic diagram of the display interface of the control panel system of a high-efficiency oxygen leaching complete set of devices for hydrometallurgy according to the present invention.

[0021] In the figure: 1. Reactor, 11. Shell, 1101. Heat exchange jacket, 11011. Jacket heat-conducting oil inlet, 11012. Jacket heat-conducting oil outlet, 1102. Magnetic flap level gauge, 1103. Manhole; 2. Pulping tank, 3. Liquid preparation tank; 12. Reactor cover, 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 measurement port; 13. Stirring component, 1301. Stirrer, 1302. Stirring paddle, 13021. Stirring shaft, 13022. Propeller blade, 13023. Cross-shaped paddle; 14. Discharge component, 1401. Bottom valve, 1402. Discharge valve, 1403. Discharge pipe; 15. Gas distribution component, 1501. Gas distribution ring, 15011. First gas pipe, 15012. Second gas pipe, 15014. First baffle, 15015. Second baffle, 15013. Double ferrule joint, 15016. Microbubble generator, 1502. Gas connection joint, 1503. Control valve; 16. Slurry circulation component, 1601. Hose pump, 1602. Circulation material pipe, 1602. Circulation material inlet valve, 1603. Sewage discharge valve; 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. Demister, 1707. Water spray head; 4. Gas supply system, 401. Gas cylinder bracket, 4011. Bottom plate, 4012. Top plate, 4013. Vertical rod, 4014. U-shaped clamping groove, 4015. Circular cavity, 4016. Clamping chamber, 402. High-pressure gas cylinder, 403. Gas supply branch pipeline, 404. Gas buffer elbow, 405. Gas 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; 5. Temperature control assembly, 501. Control box housing, 502. Expansion tank, 5021. Oil filling port, 5022. Exhaust valve, 5023. Oil level gauge, 5025. Temperature sensor, 503. Circulation pump, 504. Internal heat exchanger, 505. Electric heater, 506. Refrigeration compressor, 507. External heat exchanger, 508. Cooling fan, 509. Throttle valve, 511. Heat transfer oil inlet pipe, 512. Heat transfer oil outlet pipe, 513. Control panel, 512. Thermocouple, 514. Oil drain valve. Detailed implementation manner

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Such as Figure 5 、 Figure 6 、 Figure 7 As shown, a high-efficiency oxygen leaching complete set of devices for hydrometallurgy fixes the gas distribution assembly 15 as a whole on the inner wall of the reaction kettle 1. The gas distribution ring 1501 of the gas distribution assembly 15 is in the upper part of the reaction kettle 1, and its height is not less than 100 mm higher than the liquid level of the solution in the reaction kettle 1. The gas in the gas of the gas distribution assembly 15 passes through the first conduit 15011, the second conduit 15012 and the ferrule joint 15013 of the connecting conduit, and overflows from the microbubble generator 1503. The microbubble generator 1503 is located above the cross-shaped paddle 13023 of the stirring assembly 13. The first baffle 15015 and the second baffle 15014 of the gas distribution assembly 15 have no contact with the stirring paddle 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 gas supply main pipeline 407 of the gas supply system 4 through the air inlet 1203 of the kettle cover 12.

[0024] As Figure 9 , Figure 10 , Figure 11 shown, a full high-pressure gas cylinder 402 is prepared. The high-pressure gas cylinder 402 contains oxygen and nitrogen respectively. The oxygen high-pressure gas cylinder 402 is more than the nitrogen high-pressure gas cylinder 402. The high-pressure gas cylinders 402 are centrally placed on the clamping chamber 4016 of the gas cylinder bracket 401 in sequence from left to right according to the gas type. The bottom of the high-pressure gas cylinder 402 is placed in the circular concave cavity 4015 of the bottom plate 4011 of the gas cylinder bracket 401, and the upper part of the high-pressure gas cylinder 402 is placed in the U-shaped clamping groove 4014 of the top plate 4012 of the gas cylinder bracket 401. The chain provided on the vertical rod 4013 is hung on the hook of another vertical rod 4013 adjacent to the clamping chamber 4016 to stabilize the high-pressure gas cylinder 402. The gas supply branch pipelines 403 of the high-pressure gas cylinders 402 are respectively connected to a section of gas buffer elbow 404. A gas pressure reducer 405 and a sub-control valve 406 are sequentially arranged on the gas supply branch pipeline 403, which can slow down the impact force on the first-stage pressure gauge of the gas pressure reducer at the moment when the high-pressure gas cylinder is opened and protect the pressure gauge. Each gas branch pipeline 403 finally converges 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 arranged on the gas main pipeline 407. The exhaust valve 410 can release the gas with a certain pressure remaining in the gas main pipeline 407 and the gas branch pipelines 403, avoiding the safety risk of injuring the operators during the gas cylinder replacement operation. A check valve 411 is arranged on the gas supply main pipe 407. In the process of operation, when the pressure of the external high-pressure gas cylinder is lower than the pressure in the reactor 1, it can prevent the acidic solution in the reactor from entering the gas pipeline and the high-pressure gas cylinder 402 to cause corrosion, avoiding potential safety hazards.

[0025] When starting the operation of the reactor 1, prepare a sufficient number of full high-pressure gas cylinders 402 of oxygen and nitrogen in advance, store them on the gas cylinder bracket 401, connect all components, check the airtightness of the connections of all components, check the bottle valves of the high-pressure gas cylinders 402, and ensure that the valves such as the gas sub-control valve 406, the gas main control valve 408, the gas flow regulating valve 409, and the exhaust valve 410 are in the closed state, and the adjustment knob of the gas pressure reducer 405 is in the loosened state. When the reaction temperature of the reactor 1 reaches the process requirements and oxygen supply is required for the oxidation reaction to start, supply oxygen to the reactor 1 from the first oxygen high-pressure gas cylinder 402. Open the bottle valve of the first oxygen high-pressure gas cylinder 402, tighten the adjustment knob of the first gas pressure reducer 405 so that its working pressure is slightly higher than the pressure in the reactor 1, open the gas sub-control valve 406 of the first oxygen high-pressure gas cylinder, open the gas main control valve 408, open the gas flow regulating valve 409, and adjust its flow rate to meet the reaction requirements. Oxygen passes through the above components in sequence, enters the gas distribution assembly 1505 in the reactor 1 from the gas supply main pipeline 407 through the gas connection joint 1505 connected to the air inlet 1203 of the kettle cover 12. Oxygen passes through the gas distribution ring 1501, the first gas guide pipe 15011, and the second gas guide pipe 15012 in sequence, overflows from the microbubble generator 15016 and enters the reactor 1, fully contacts the reaction medium in the reactor 1, and undergoes an oxidation reaction at a certain temperature. As the reaction continues, the unreacted gas rises and escapes, enters the condenser inlet pipe 1702 of the condensation assembly 17 of the reactor through the pipeline of the exhaust port 1206 of the kettle cover 12 (as shown in Figure 8 ), passes through the heat exchanger 1701 and enters the tail gas caustic soda absorption tower from the condenser outlet pipe 1703. When the oxygen remaining in the first high-pressure gas cylinder is insufficient, perform the first oxygen gas cylinder switching operation. At this time, open the bottle valve of the second oxygen high-pressure gas cylinder 402, tighten the adjustment knob of the second gas pressure reducer 405 so that its working pressure is slightly higher than the pressure in the reactor 1, open the gas sub-control valve 406 of the second oxygen gas cylinder, close the gas sub-control valve 406 of the first one, and close the bottle valve of the first oxygen high-pressure gas cylinder 402 to complete the first oxygen gas cylinder switching operation. Supply oxygen to the reactor 1 continuously from the second oxygen high-pressure gas cylinder 402, and so on to complete the switching of oxygen cylinders until the oxidation reaction is completed. Then, close the gas main control valve 408, close the gas sub-control valve 406 of the currently supplying gas, close the bottle valve of the corresponding high-pressure gas cylinder 402, and stop oxygen supply.

[0026] After the leaching reaction ends, oxygen is switched to nitrogen through the gas distribution control valve 406 to purge and replace harmful gases such as hydrogen sulfide generated by the oxidation reaction in the reaction kettle 1, so as to avoid the release of residual harmful gases during the discharge of the leaching solution and harm the operators. Open the valve of the first high-pressure nitrogen gas cylinder 402, tighten the first nitrogen gas pressure regulator 405 so that its working pressure is slightly higher than the pressure in the reaction kettle 1, open the first nitrogen gas distribution control valve 4061, adjust the flow regulating valve 409 so that its flow rate meets the requirements, open the gas main control valve 408, and nitrogen passes through the above-mentioned components in sequence from the air supply main pipeline 407 through the connection joint 1502 connected to the air inlet 1203 of the kettle cover 12 and enters the gas distribution assembly 15 in the reaction kettle 1, and then passes through the gas distribution ring 1501, the first gas guide pipe 15011, and the second gas guide pipe 15012 in sequence, and overflows from the microbubble generator 15016 into the reaction kettle 1. Nitrogen purges and replaces the harmful gases generated by the leaching reaction in the reaction kettle 1, and the purged gas enters the inlet pipe 1702 of the condensation assembly 17 through the pipeline of the exhaust port 1206 of the kettle cover 12 (as Figure 8 shown), is cooled by the heat exchanger 1701 and enters the tail gas caustic soda absorption tower from the outlet pipe 1703 of the condenser. According to the switching method of the high-pressure oxygen cylinder, the switching operation between nitrogen gas cylinders is completed. After the nitrogen purge is completed, close the gas main control valve 408, close the gas distribution control valve 406 that is currently supplying gas, close the valve of the corresponding high-pressure gas cylinder 402, stop the gas supply, close the valves of all high-pressure gas cylinders 402, open all gas distribution control valves 406, open the exhaust valve 410 to release the residual gas in the gas supply branch pipeline 403 and the gas supply main pipeline 407, then close the exhaust valve 410, loosen the adjustment knobs of all gas pressure regulators 405, and close the gas distribution control valve 406 and the flow regulating valve 409.

[0027] As Figure 8 shown, during the leaching reaction process, the condensation assembly 17 operates. Open the cooling water inlet pipe 1704 and the cooling water outlet pipeline 1705 of the condensation assembly 17, and flowing cooling water is introduced into the cooling water inlet pipe 1704. The tail gas generated from the reaction kettle 1 enters the inlet pipe 1702 of the condensation assembly 17 above the reaction kettle 1 through the pipeline of the exhaust port 1206 of the kettle cover 12. The slurry droplets entrained by the hot tail gas are intercepted on the mist eliminator 1706 provided in the inlet pipe 1702 of the condenser, and the water spray head 1707 above the mist eliminator 1706 flushes the droplets back into the reaction kettle 1. The hot tail gas exchanges heat in the heat exchanger 1701 of the condensation assembly 17, and the cooled tail gas enters the caustic soda absorption tower through the outlet pipe 1703 of the condenser and is finally discharged. The cooling water is discharged from the cooling water outlet pipe 1705 to avoid problems such as environmental pollution caused by the discharged waste gas and waste water.

[0028] As Figure 2 , Figure 11 , Figure 12As shown, check that the oil drain valve 514 is in the closed state. Open the exhaust valve 5022 of the expansion tank 502, and inject heat-conducting oil into the expansion tank 502 from the oil filling port 5021 of the expansion tank 502. Observe the oil level gauge 5023. When the heat-conducting oil is at the optimal oil level, turn on the power switch of the control panel 512 of the control box 501 of the temperature control assembly 5. Operate the control panel 512 and press the start button of the circulation pump 503. The system starts to exhaust air, and the oil level in the expansion tank 502 begins to drop. The heat-conducting oil enters the circulation pump 503, passes through the internal heat exchanger 504 and the electric heater 505 in sequence, and comes out from the heat-conducting oil outlet pipe 511 and is transported through the pipeline to the heat-conducting oil inlet pipe 11011 of the jacket of the reactor 1 and injected into the heat exchange jacket 1101. Observe the oil level in the expansion tank at any time and replenish the heat-conducting oil in a timely manner through the oil filling port 5021. Throughout the process, always keep the oil level in the expansion tank 502 at the optimal oil level until the heat exchange jacket 1101 of the reactor 1 is filled with heat-conducting oil 5023. The heat-conducting oil comes out from the jacket heat-conducting oil outlet pipe 11012 and is transported through the pipeline to the heat-conducting oil inlet pipe 510 of the temperature control assembly 5, and then enters the circulation pump 503 to form a closed-loop circuit. The exhaust is completed. If the oil level in the expansion tank 502 exceeds the optimal oil level, open the oil drain valve 514 to drain the excess oil; The reaction temperature of the reactor 1 is achieved through the heat-conducting oil of the temperature control assembly 5. The heat-conducting oil outlet pipe 511 of the temperature control assembly 5 is connected to the heat-conducting oil inlet pipe 11011 of the jacket, and the heat-conducting oil inlet pipe 510 is connected to the heat-conducting oil outlet pipe 11012 of the jacket. Set the required reaction temperature of the reactor 1 through the control panel 512. When the reactor 1 needs to be heated up, start the circulation pump 503 to circulate the heat-conducting oil to the heat exchange jacket 1101 of the reactor to form a closed-loop circuit. The temperature increase is achieved by controlling the electric heater 505. The thermocouple 513 inserted in the reactor 1 transmits the signal to the electric heater 505 of the temperature control assembly through the temperature sensor. The electric heater 505 heats the heat-conducting oil 5023, and the heated heat-conducting oil is transported to the heat exchange jacket 1101 through the circulation pump 503 to exchange heat with the materials in the reactor 1, realizing the heating and temperature increase of the materials in the kettle. When the temperature of the materials in the kettle reaches the process-set temperature value, the electric heater 505 stops working, and the material temperature is in a relatively stable state.

[0029] When the reactor 1 is in the cooling state, operate the operation control panel 512 to achieve cooling by controlling the refrigeration compressor 506. Circulate the heat-conducting oil to the heat exchange jacket 1101 of the reactor. The thermocouple 513 temperature sensor inserted into the reactor 1 transmits a signal to the refrigeration compressor 506 of the temperature control component 5, and the refrigeration compressor 506 starts to work. The refrigerant in the refrigeration compressor 506 exchanges heat with the heat-conducting oil through the internal heat exchanger 504 to cool the heat-conducting oil. The cooled heat-conducting oil is transported to the heat exchange jacket 1101 of the reactor through the circulation pump 503 to exchange heat with the materials in the reactor 1, realizing the cooling and temperature reduction of the materials. After the refrigerant in the refrigeration compressor 506 exchanges heat with the heat-conducting oil through the internal heat exchanger 504, its temperature rises, and the liquid refrigerant becomes steam. The flow cross-section of the refrigerant is suddenly contracted through the throttle valve 509, the flow rate of the refrigerant increases, the pressure drops, and it enters the external heat exchanger 507 to exchange heat with the outside world. The cooling fan 508 and the external heat exchanger 507 perform forced heat exchange to reduce the temperature of the refrigerant entering the refrigeration compressor, and the refrigerant changes from gaseous to liquid, improving the refrigeration efficiency of the refrigeration compressor 506.

[0030] As Figure 1 and Figure 2 shown, close the bottom valve 1401 and the discharge valve 1402 of the reactor 1, put the alloy materials to be leached and other substances into the pulping tank 2 according to the process ratio, start the stirrer of the pulping tank 2 to pulp the materials, and introduce the pulped materials into the reactor 1 through the feed port 1204 of the kettle cover 12 from the pipeline by the feed pump. At the same time, put the leaching agent required for leaching into the liquid preparation tank 3 according to the process requirements, start the stirrer of the liquid preparation tank 3 to mix the leaching agent evenly, and introduce it into the reactor 1 through the liquid inlet 1202 of the kettle cover 12 from the pipeline by the feed pump. Start the stirring component 13 of the reactor 1, and the stirrer 1301 drives the stirring shaft 13021 on the stirring paddle 1302 to rotate in the solution. The propeller blade 13022 and the cross-shaped paddle 13023 can stir and suspend the alloy solid particles with a large specific gravity deposited at the bottom of the reactor 1 in the solution, making the leached alloy solid particles stirred and dispersed evenly. Heat the reactor 1 through the temperature control component 5 according to the process requirements, and supply the reaction oxidant required in the reactor 1 through the gas supply system 4, finally realizing the reaction in the reactor 1.

[0031] During the leaching reaction process, the slurry circulation component 14 operates simultaneously. Open the circulation material inlet valve and outlet valve, close the discharge valve 1402 and the sewage discharge valve 1603, open the bottom valve 1401 of the discharge component 14, and start the hose pump 1601. The materials in the reactor 1 flow out from the bottom valve 1401, and enter the reactor 1 again through the slurry circulation port 1207 of the kettle cover 12 along the circulation material pipe 1602 by the hose pump 1601, in countercurrent contact with the unreacted oxygen escaping in the kettle, which is conducive to the full progress of the leaching reaction.

[0032] After the leaching reaction is completed, the well-leached materials are discharged through the discharging assembly 14. Close the circulating material inlet valve 1602, open the bottom valve 1401 of the reaction kettle, open the discharging valve 1402, and discharge the materials in the reaction kettle. Close the discharging valve 1402 and the circulating material outlet valve 1604, open the circulating material inlet valve 1602, the sewage discharge valve 1603, and the bottom valve 1401, and start the hose pump 1601, so that the materials in the reaction kettle 1 can be transported over a long distance and discharged from the sewage outlet for use where needed. At the same time, the sewage discharge generated by cleaning the reaction kettle 1, the pulping tank 2, and the liquid preparation tank 3 can be achieved through the slurry circulation assembly 16 and the discharging assembly 14.

[0033] As Figure 2 , Figure 3 shown, a PH / ORP meter 12011 is provided at the PH / ORP socket 1201 of the reaction kettle lid 12, which can detect the PH value and redox potential of the reaction kettle materials in real time, judge the progress of the material leaching reaction and redox reaction, and make corresponding process control adjustments; a flap level gauge 1102 is provided on the outer wall of the heat exchange jacket 1101 of the reaction kettle 1, which can monitor the liquid level position in the reaction kettle 1 in real time.

[0034] During use, prepare the reaction materials required in the reaction kettle 1 in the liquid preparation tank 3 and the pulping tank 2 in advance. After the reaction materials are transported to the reaction kettle 1 by the transfer pump, start the stirring assembly 13 to fully mix the reaction materials, and at the same time start the oxygen supply assembly 4 to supply oxygen to the reaction kettle 1. Oxygen is supplied while stirring in the reaction kettle. After a period of oxygen supply, start the temperature control assembly 5 and the condensation assembly 17, set the required temperature of the reaction kettle, the temperature control assembly 5 provides the temperature conditions for the reaction in the reaction kettle 1, and the condensation assembly 17 cools and discharges the harmful substances generated by the leaching reaction. After the reaction kettle 1 has completed the leaching reaction fully and completely, the operator can blow the reaction kettle 1 and the pipeline through the oxygen supply assembly, and then operate the discharging assembly 14 to discharge the reacted materials.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A complete set of high-efficiency oxygen leaching equipment for hydrometallurgy, comprising a reactor, characterized in that: The upper part of the reactor (1) is connected to a liquid preparation tank (3) and a slurry tank (2); one side of the reactor (1) is provided with a gas supply system (4); and the other side of the reactor (1) is provided with a temperature control system (5).

2. The high-efficiency oxygen leaching complete set for hydrometallurgy according to claim 1, characterized in that: The reactor (1) comprises 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 arranged on the outer wall of the reactor (1); the reactor cover (12) is arranged 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 reactor cover (12); the discharge assembly (14) is arranged at the bottom of the reactor (1); the gas distribution assembly (15) is arranged inside the reactor (1); the slurry circulation assembly (16) is arranged on one side of the reactor (1); and the condensation assembly (17) is arranged on the upper part of the reactor (1).

3. The high-efficiency oxygen leaching complete set for hydrometallurgy according to claim 2, characterized in that: A heat exchange jacket (1101) is provided outside the shell (11), and a magnetic flap liquid level gauge (1102) is provided on one side wall of the shell (11); A heat transfer oil inlet (11011) is provided at the bottom of the heat exchange jacket (1101), and a heat transfer oil outlet (11012) is provided at an upper portion of one side of the heat exchange jacket (1101); The kettle cover (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 of the reactor is installed with a PH / ORP meter, and the temperature measuring port (1208) is installed with a thermocouple (512).

4. The high-efficiency oxygen leaching complete set for hydrometallurgy according to claim 2, characterized in that: The stirring assembly (13) comprises a stirrer (1301) and a stirring paddle (1302), wherein the stirrer (1301) is connected to the stirring paddle (1302), the stirrer (1301) is mounted on the outside of the kettle cover (12), the stirring paddle (1302) is located in the inner cavity of the reaction kettle (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), and the top end of the stirring shaft (13021) is provided with a cross-shaped blade (13023).

5. The high-efficiency oxygen leaching complete set for hydrometallurgy according to claim 2, 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 arranged at the bottom of the reaction kettle (1); the bottom valve (1401) is connected to the discharge pipe (1403); and the discharge valve (1402) is arranged at the discharge outlet of the discharge pipe (1403).

6. The high-efficiency oxygen leaching complete set for hydrometallurgy according to claim 2, characterized in that: The gas distribution assembly (15) comprises a gas distribution ring (1501), a plurality of first air guide tubes (15011) are evenly distributed on the lower surface of the gas distribution ring (1501), the first air guide tubes (15011) are connected to second air guide tubes (15012) via double ferrule joints (15013), a microbubble device (15016) is arranged at the bottom end of the second air guide tube (15012), a second baffle plate (15015) and a first baffle plate (15014) are arranged above and below the annular second air guide tube (15012), and the first baffle plate (15015) and the first baffle plate (15014) are arranged above and below the second air guide tube (15012). A plurality of annular through holes are provided on the plate (15014) and the second baffle plate (15015); the holes on the same circumferential line have the same diameter, while the holes on adjacent circumferential lines have different diameters; the edges of the first baffle plate (15014) and the second baffle plate (15015) are provided with jacks matching the second air guide tube (15012), the PH / ORP meter and the thermocouple (513); the upper surface of the gas distribution ring (1501) is provided with a gas connection joint (1502), and the gas connection joint (1502) is provided with a control valve (1503).

7. The high-efficiency oxygen leaching complete set for hydrometallurgy according to claim 2, characterized in that: The slurry circulation component (16) is provided with a hose pump (1601), the inlet of the hose pump (1601) is connected to the discharge pipe (1403), 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 kettle cover (12), and the inlet and outlet of the hose pump (1601) are both provided with control valves.

8. The high-efficiency oxygen leaching complete set for hydrometallurgy according to claim 2, characterized in that: The condensation component (17) is provided with a heat exchanger (1701), and a condenser air outlet pipe (1703) and a cooling water outlet pipe (1705) are provided at the top of the heat exchanger (1701), and the condenser air outlet pipe (1703) is connected to an alkali solution absorption tower, and a condenser air inlet pipe (1702) and a cooling water inlet pipe (1704) are provided at the bottom of the heat exchanger (1701), and a foam catcher (1706) and a water spray head (1707) are provided on the (1702), and the foam catcher (1706) is located below the water spray head (1707).

9. The high-efficiency oxygen leaching complete set for hydrometallurgy according to claim 2, characterized in that: The gas inlet (1203) of the kettle cover (12) is connected to a gas supply system (4), the gas supply system (4) is provided with a plurality of high-pressure gas cylinders (402) and gas cylinder brackets (401), the bottle mouth of each high-pressure gas cylinder (402) is connected to a gas supply branch pipeline (403), the gas supply branch pipeline (403) is provided with a gas buffer elbow (404), a pressure reducer (405), and a sub-control valve (406) in sequence, each gas branch pipeline (403) eventually merges into a gas main pipeline (407), and the gas main pipeline (407) is provided with a main control valve (408), a flow regulating valve (409), an exhaust valve (410), and a one-way valve (411) in sequence; The gas cylinder support (401) is provided with a bottom plate (4011) and a top plate (4012), vertical poles (4013) are evenly arranged between the bottom plate (4011) and the top plate (4012), a plurality of mounting chambers are formed between adjacent poles (4013), a U-shaped mounting groove (4014) is provided on the corresponding top plate (4012) directly above each mounting chamber, and a circular concave cavity for mounting a high-pressure gas cylinder (402) is provided on the bottom plate (4011) corresponding to each mounting chamber; A chain and a hook are provided on the vertical pole (4013) at the front end of each clamping chamber, and reinforcing rib plates are fixedly connected to the bottom end, middle end and both sides of the vertical pole (4013).

10. The high-efficiency oxygen leaching complete set for hydrometallurgy according to claim 2, characterized in that: The thermocouple (512) is connected to the temperature control component (5) via a sensor. The temperature control system (5) is provided with a control box (501). The control box (501) is provided 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 provided with an expansion tank (502). The top of the expansion tank (502) is provided with an oil filling port (5021), a temperature sensor (5024) and an exhaust valve (5022). The side of the expansion tank (502) is provided with an oil level gauge (5023). The bottom of the expansion tank (502) is connected to a circulation pump (503), an internal heat exchanger (504) and an electric heater (505) in sequence through pipelines. The internal heat exchanger (504) is connected to a refrigeration compressor (506), an external heat exchanger (507) and an air cooler (508). The refrigeration compressor (506) and the internal heat exchanger (504) are connected to each other. A throttle valve (509) is provided between the electric heater (505), the electric heater (505) is connected to the thermocouple (513) via a sensor, a pipe at one end of the electric heater (505) passes through the control box (501) body 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), the heat transfer oil outlet pipe (511) and the heat transfer oil inlet pipe (510) are both provided with temperature sensors, and 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 pipe (11011) and the jacket heat transfer oil outlet pipe (11012).

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