Multifunctional hydrometallurgical leaching pilot plant

Abstract

The utility model discloses a kind of multifunctional hydrometallurgy leaching industrial test lines, comprising: sizing filter unit, leaching output unit and air supply unit.Sizing filter unit is used to prepare slurry after adding sizing solvent and raw ore, and make it output after multistage filtration.Leaching output unit includes multiple leaching tanks sequentially arranged and sequentially connected, and the input end of multiple leaching tanks is connected to sizing filter unit to be connected in parallel, and the output end of multiple leaching tanks is also respectively connected to smelting system.Air supply unit includes air compressor, buffer tank connected to air compressor, air conveying pipe group connected to buffer tank, and multiple air conveying pipes of air conveying pipe group are inserted into multiple leaching tanks one by one downward and do not extend into tank bottom of leaching tank.The new test line has wide application range, flexible and variable test, and can solve the existing technical problems of "compressed air is introduced into tank bottom to blow off unreacted material, which causes long-time wear of ore slurry and tank bottom, resulting in thinning of tank bottom and liquid leakage".

Claims

1. A multifunctional hydrometallurgical leaching industrial pilot line, characterized in that, include: Slurry preparation and filtration unit (1), leaching output unit (2) and air supply unit (3); The slurry preparation and filtration unit (1) is used to prepare the slurry to be treated by adding slurry preparation solvent and raw ore, and to filter the slurry through multiple stages and output it to the outside from its output end. The leaching output unit (2) includes multiple leaching tanks (21) arranged sequentially and connected in order as needed. The input ends of the multiple leaching tanks (21) are respectively connected to the output ends of the slurry preparation and filtration unit (1) in parallel so that each leaching tank (21) can be connected to the slurry preparation and filtration unit (1) as needed. The output ends of the multiple leaching tanks (21) are also respectively connected to the downstream smelting system so that the leached slurry can be discharged to the smelting system. The air supply unit (3) includes an air compressor (31) for preparing compressed air, a buffer tank (32) connected to the air compressor (31), and an air delivery pipe assembly (33) connected to the buffer tank (32). The multiple air delivery pipes of the air delivery pipe assembly (33) are inserted downward into multiple leaching tanks (21) but do not extend into the bottom of the leaching tanks (21).

2. The multifunctional hydrometallurgical leaching industrial pilot line according to claim 1, characterized in that, The slurry preparation and filtration unit (1) includes a pit (11) formed by the depression in the ground, a slurry preparation tank (12) set in the pit (11), a feeding hopper (13) connected to the upper opening end of the slurry preparation tank (12), a stirrer (14) set on the upper opening end of the slurry preparation tank (12) and extending downward into the slurry preparation tank (12), and a pumping filtration system; The input end of the pumping filtration system is connected to the slurry preparation tank (12), and its output end is connected to each leaching tank (21) respectively, so as to pump the slurry in the slurry preparation tank (12) into the leaching tank (21) after multi-stage filtration.

3. The multifunctional hydrometallurgical leaching industrial pilot line according to claim 2, characterized in that, The pumping filtration system includes a mortar pump (151) installed outside the mortar mixing tank (12), an internal filter cover (152) and an external filter box (153) connected in sequence to the input end of the mortar pump (151), a mortar conveying main pipe (154), a mortar diversion branch pipe (155), and multiple mortar conveying branch pipes (156). The built-in filter cover (152) is located inside the slurry mixing tank (12) and covers the mortar outlet opened on the side wall of the slurry mixing tank (12), while the external filter box (153) is located outside the slurry mixing tank (12). The input end of the mortar conveying main pipe (154) is connected to the output side of the mortar pump (151), and the output end of the mortar conveying main pipe (154) is connected to each mortar conveying branch pipe (156). Each mortar conveying branch pipe (156) is vertically inserted into the corresponding leaching tank (21), and each mortar conveying branch pipe (156) is also equipped with a switch valve. The two ends of the mortar diversion branch pipe (155) are connected to the mortar conveying main pipe (154) and the mortar mixing tank (12) respectively, and the mortar diversion branch pipe (155) is also equipped with a switch valve.

4. The multifunctional hydrometallurgical leaching industrial pilot line according to claim 2, characterized in that, The bottom plate of one corner of the pit (11) is recessed to form a collection pit (16). The ground of the pit (11) is also provided with multiple recessed guide channels to guide the slurry that overflows into the pit (11) into the collection pit (16). The slurry collection pit (16) is also equipped with a submersible slurry pump (17) and a mortar recovery branch pipe (18) connected to the output side of the submersible slurry pump (17). The output end of the mortar recovery branch pipe (18) extends into the slurry mixing tank (12).

5. The multifunctional hydrometallurgical leaching industrial pilot line according to claim 1, characterized in that, Two adjacent leaching tanks (21) are connected by a first overflow pipe (22) connected to the upper end of both, and each first overflow pipe (22) is also provided with a switch valve; The leaching output unit (2) also includes guide pipes (23) arranged in each of the remaining leaching tanks (21) except the last leaching tank (21). Each guide pipe (23) is connected to the corresponding first overflow pipe (22), and multiple leaching tanks (21) are arranged in order from high to low along the slurry conveying direction so that the guide pipes (23) are connected to the corresponding first overflow pipes (22) to form a siphon structure, so as to automatically guide the slurry in the high-positioned leaching tank (21) to the low-positioned leaching tank (21); The leaching output unit (2) also includes a second overflow pipe group (24), the input end of which is connected to each leaching tank (21), and the output end of which is connected to an external emergency pit (71) to allow the slurry overflowing from the upper end of the leaching tank (21) to flow into the emergency pit (71).

6. The multifunctional hydrometallurgical leaching industrial pilot line according to claim 5, characterized in that, The leaching output unit (2) also includes a diaphragm pump (25) and a leaching delivery pipe assembly; The leaching delivery pipe assembly includes a first leaching delivery pipe (261) connected to the input end of the diaphragm pump (25), a second leaching delivery pipe (262) connected to the output side of the diaphragm pump (25), a leaching return pipe (263) and a leaching output pipe (264) respectively connected to the output end of the second leaching delivery pipe (262), and a switch valve installed in each pipe; The input end of the first leaching conveying pipe (261) is connected to the bottom side wall of each leaching tank (21); The output end of the leaching return pipe (263) is connected to the first leaching tank (21); The output end of the leaching output pipe (264) is connected to the smelting system.

7. The multifunctional hydrometallurgical leaching industrial pilot line according to claim 1, characterized in that, The multifunctional wet metallurgical leaching industrial test line also includes a steam heating unit (4), which includes: a waste heat boiler (41) containing water, a steam drum (42) connected to the steam discharge side of the waste heat boiler (41), a steam conveying pipe group for conveying steam, and a temperature control system for controlling the temperature in each leaching tank (21). The waste heat boiler (41) is connected to the flue gas discharge pipe to heat the water inside it with high-temperature flue gas to form high-temperature steam; The steam delivery pipe assembly includes a main steam delivery pipe (431) connected to the steam drum (42), multiple steam delivery branch pipes (432) connected to the output end of the main steam delivery pipe (431), and switch valves installed in the main steam delivery pipe (431) and each steam delivery branch pipe (432). The lower end of each steam delivery branch pipe (432) extends into the corresponding leaching tank (21), and the switch valves are connected to the temperature control system. The temperature control system includes a control cabinet (441) and temperature detectors (442) installed in each leaching tank (21), with the temperature detectors (442) connected to the control cabinet (441).

8. The multifunctional hydrometallurgical leaching industrial pilot line according to claim 1, characterized in that, The multifunctional hydrometallurgical leaching industrial pilot line also includes an acid mist recovery unit (5), which includes an acid mist conveying main pipe (51) and multiple acid mist conveying branch pipes (52). Each acid mist conveying branch pipe (52) is inserted into the corresponding leaching tank (21), and the upper end of each acid mist conveying branch pipe (52) is connected to the acid mist conveying main pipe (51). The acid mist conveying main pipe (51) is tilted towards the mixing tank (12) so that the recovered and condensed acid agent flows back to the mixing tank (12).

9. The multifunctional hydrometallurgical leaching industrial pilot line according to claim 1, characterized in that, The multifunctional hydrometallurgical leaching industrial pilot line also includes an acid supply unit (6), which includes: An acid tank (61) is located at a high position, and an acid delivery pipe assembly (62) is connected to the acid tank (61). The acid delivery pipe assembly (62) includes an acid delivery main pipe connected to the acid tank (61), multiple acid delivery branch pipes connected to the output end of the acid delivery main pipe, and a switch valve installed in each acid delivery branch pipe. The multiple acid delivery branch pipes are inserted into multiple leaching tanks (21).

10. The multifunctional hydrometallurgical leaching industrial pilot line according to claim 1, characterized in that, The leaching output unit (2) also includes a cofferdam (27) set up under the leaching tank (21) and surrounding the leaching tank (21), the cofferdam (27) being connected to the accident pit (71); The multifunctional hydrometallurgical leaching industrial test line also includes a shallow water pump (72) installed in the accident pit (71), a reflux main pipe connected to the output side of the shallow water pump (72), and two reflux branch pipes respectively connected to the output end of the reflux main pipe. The output end of one reflux branch pipe is connected to one of the leaching tanks (21), and the output end of the other reflux branch pipe is connected to the smelting system.

Images