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CN-120905526-B - Vanadium slag roasting and leaching equipment and method

CN120905526BCN 120905526 BCN120905526 BCN 120905526BCN-120905526-B

Abstract

The invention relates to vanadium slag roasting and leaching equipment and a method, which belong to the technical field of vanadium extraction, and comprise a leaching tank, a charging hopper, a drain pipe, a controller and a diversion hopper; an air extracting mechanism, an agitating mechanism and a wet grinding mechanism. According to the invention, through the arrangement of the wet grinding mechanism, the grinding sleeve is matched with the grinding part to grind the baked clinker in the autorotation process, so that the particle size of the baked clinker is further reduced, meanwhile, part of the baked clinker enters the grinding sleeve through the feed inlet, at the moment, the grinding rod is used for grinding part of the baked clinker, the ground baked clinker is discharged through the feed inlet and reentered into the grinding part, the ground and ground baked clinker is prevented from being difficult to grind the large-block clinker due to the fact that part of the baked clinker cannot enter between the grinding sleeve and the grinding part, the treatment quality and the treatment efficiency of the baked clinker are further improved, and the leaching efficiency of vanadate in the baked clinker is improved.

Inventors

  • Shu Guipeng
  • YU XIAOCHEN
  • LIU ZHANMING
  • Shu Liqi

Assignees

  • 攀枝花市绿建节能材料有限公司

Dates

Publication Date
20260508
Application Date
20250818

Claims (8)

  1. 1. The utility model provides a vanadium sediment roasting leaching equipment, includes leaches jar (1), loading hopper (3), drain pipe (4) and controller (5), its characterized in that still includes: the guide hopper (6) is fixedly connected to the inner surface of the leaching tank (1) and used for guiding and roasting clinker; The air extraction mechanism (7) is fixedly connected to the top of the leaching tank (1) and is used for extracting hot air in the leaching tank (1); The stirring mechanism (8) is fixedly connected to the middle part of the leaching tank (1) and fixedly communicated with the air extraction mechanism (7), and the stirring mechanism (8) is used for stirring the roasting clinker and the leaching agent and injecting hot air into the roasting clinker and the leaching agent; A wet grinding mechanism (9) fixedly connected to the outer surface of the stirring mechanism (8) for reducing the particle size of the roasted clinker, the wet grinding mechanism (9) is positioned below the guide hopper (6), the wet grinding mechanism (9) comprises a fixed sleeve (93) which is in sealing and rotating connection with the inner surface of the leaching tank (1), an inner ring of the fixed sleeve (93) is fixedly connected with a grinding net (91), the grinding net (91) is provided with a grinding part (92) which is sunken downwards, a transmission shaft (94) is connected on the fixed sleeve (93) in a penetrating, sealing and rotating way, one end of the transmission shaft (94) is fixedly connected with a gear (98), the gear (98) is positioned in the fixed sleeve (93), the outer surface of the transmission shaft (94) is fixedly connected with the grinding sleeve (95), the outer surface of the transmission shaft (94) positioned in the grinding sleeve (95) is fixedly connected with a grinding rod (97), a feed inlet (96) is formed in the grinding sleeve (95), the grinding sleeve (95) is positioned in the grinding part (92), a fixed ring (99) is fixedly connected in the leaching tank (1), the fixed sleeve (93) is connected with the fixed ring (99) in a sealing and rotating way, the bottom of the fixed ring (99) is fixedly connected with a gear ring (910), and the gear ring (910) is meshed with the gear (98).
  2. 2. The vanadium slag roasting leaching equipment according to claim 1, wherein the stirring mechanism (8) comprises a motor (81) fixedly connected to the top of the leaching tank (1), an output end of the motor (81) is fixedly connected with a rotating shaft (82), the rotating shaft (82) penetrates through the diversion bucket (6) and is in sealed rotating connection with the diversion bucket (6), the bottom of the rotating shaft (82) is in sealed rotating connection with the inner bottom of the leaching tank (1), an airflow channel (821) is formed in the bottom of the rotating shaft (82), an air jet pipe (822) is fixedly connected to the side wall of the rotating shaft (82), the air jet pipe (822) is located below the grinding net (91), the air jet pipe (822) is communicated with the inside of the airflow channel (821), an air jet hole (823) is formed in the outer surface of the air jet pipe (822), a stirring plate (83) is fixedly connected to the outer surface of the rotating shaft (82), and the stirring plate (83) is located below the air jet pipe (822).
  3. 3. The vanadium slag roasting leaching equipment as set forth in claim 2, wherein the stirring plate (83) is fixedly connected with an air injection pipe (831), the air injection pipe (831) is provided with an air injection hole (833), the air injection pipe (831) is fixedly communicated with an air pipe (832), the air pipe (832) is fixedly connected with the rotating shaft (82), and the air pipe (832) is communicated with the inside of the air flow channel (821).
  4. 4. The vanadium slag roasting and leaching equipment according to claim 2, wherein the rotating shaft (82) penetrates through the grinding net (91) and is fixedly connected with the grinding net (91), and the transmission shaft (94) is rotatably connected with the rotating shaft (82).
  5. 5. The vanadium slag roasting leaching equipment according to claim 2, wherein the air extraction mechanism (7) comprises an air pump (71) fixedly connected to the top of the leaching tank (1), an air extraction end of the air pump (71) is fixedly communicated with a filter sleeve (72), an exhaust end of the air pump (71) is fixedly communicated with a communicating pipe (73), the filter sleeve (72) is positioned in the leaching tank (1), and the communicating pipe (73) is fixedly communicated with the leaching tank (1) and is communicated with the inside of the air flow channel (821).
  6. 6. The vanadium slag roasting and leaching equipment according to claim 1, wherein the charging hopper (3) is fixedly communicated with the top of the leaching tank (1), the water discharging pipe (4) is fixedly communicated with the bottom of the leaching tank (1), and the controller (5) is fixedly connected with the top of the leaching tank (1).
  7. 7. The vanadium slag roasting leaching equipment according to claim 1, wherein the outer surface of the leaching tank (1) is fixedly connected with a water inlet sleeve (2), a communication port (11) is formed in the side wall of the leaching tank (1), the leaching tank (1) is communicated with the inside of the water inlet sleeve (2) through the communication port (11), an exhaust pipe (10) is fixedly communicated with the side wall of the leaching tank (1), the exhaust pipe (10) stretches into the water inlet sleeve (2), the air inlet end of the exhaust pipe (10) is positioned below the diversion bucket (6), and the top of the water inlet sleeve (2) is higher than the bottom of the diversion bucket (6).
  8. 8. A vanadium slag roasting and leaching method, based on a vanadium slag roasting and leaching device as claimed in any one of claims 1 to 7, characterized by comprising the steps of: step one, closing a drain pipe (4), and adding a normal-temperature leaching agent into a leaching tank (1) through a water inlet sleeve (2); step two, adding roasting clinker into the leaching tank (1) through a feed hopper (3), and simultaneously starting an air pump (71) and a motor (81) to enable a wet grinding mechanism (9) and a stirring plate (83) to work; Step three, the roasting clinker entering the leaching tank (1) falls above the grinding net (91) under the action of the guide hopper (6); step four, the roasting clinker enters the leaching agent to enable the leaching agent to be partially evaporated under the action of high temperature, water vapor formed by evaporation is injected into an air flow channel (821) through a communicating pipe (73) by an air pump (71), and then is injected into the leaching agent through an air injection pipe (831); Step five, closing a feed hopper (3) after the addition of the baked clinker is completed; step six, after the leaching time is reached, opening a drain pipe (4) to discharge leaching agent and leaching slag; And seventhly, filtering and separating the discharged leaching agent and leaching slag, adding an acid solution into the leaching agent to precipitate vanadium in the form of ammonium polyvanadate, and finally obtaining a vanadium pentoxide product after washing, drying and calcining.

Description

Vanadium slag roasting and leaching equipment and method Technical Field The invention belongs to the technical field of vanadium extraction, and particularly relates to vanadium slag roasting and leaching equipment and method. Background The vanadium slag roasting leaching is to extract vanadium pentoxide from vanadium-containing steel slag (mainly converter vanadium slag)) Is a core process link. The process is a typical hydrometallurgical process, and mainly aims to convert water-insoluble vanadium compounds in vanadium slag into water-soluble vanadate, extract the vanadate through water leaching and finally precipitate the vanadate to obtain a vanadium product. At present, when vanadate is leached by the existing vanadium slag roasting leaching equipment, soluble vanadate generated in the roasting clinker is dissolved in water to realize separation of vanadium and most insoluble residues, and the main process is that after the roasting clinker is cooled, the roasting clinker is directly put into a leaching agent (mainly clean water, sometimes dilute alkali solution or dilute acid solution) for leaching to obtain the leaching agent and leaching slag containing vanadium, but the leaching agent is difficult to permeate into the agglomerated roasting clinker due to caking phenomenon of the cooled roasting clinker in the roasting process, so that the leaching time is long and the leaching efficiency is low. Disclosure of Invention The invention aims to provide a reasonable-design vanadium slag roasting and leaching device and method for solving the problems. The invention realizes the above purpose through the following technical scheme: the vanadium slag roasting leaching equipment comprises a leaching tank, a charging hopper, a drain pipe and a controller, and further comprises: the guide hopper is fixedly connected to the inner surface of the leaching tank and used for guiding and roasting clinker; the air extraction mechanism is fixedly connected to the top of the leaching tank and used for extracting hot air in the leaching tank; The stirring mechanism is fixedly connected to the middle part of the leaching tank and fixedly communicated with the air extracting mechanism, and is used for stirring the roasting clinker and the leaching agent and injecting hot air into the roasting clinker and the leaching agent; the wet grinding mechanism is fixedly connected to the outer surface of the stirring mechanism and used for reducing the particle size of the roasted clinker, and the wet grinding mechanism is positioned below the guide hopper. As a further optimization scheme of the invention, the wet grinding mechanism comprises a fixed sleeve which is in sealing rotation connection with the inner surface of the leaching tank, the inner ring of the fixed sleeve is fixedly connected with a grinding net, a downward sunken grinding part is arranged on the grinding net, a transmission shaft is connected to the fixed sleeve in a penetrating and sealing rotation manner, one end of the transmission shaft is fixedly connected with a gear, the gear is positioned in the fixed sleeve, the outer surface of the transmission shaft is fixedly connected with a grinding sleeve, the outer surface of the transmission shaft positioned in the grinding sleeve is fixedly connected with a grinding rod, a feed inlet is formed in the grinding sleeve, and the grinding sleeve is positioned in the grinding part. As a further optimization scheme of the invention, a fixed ring is fixedly connected in the leaching tank, the fixed sleeve is in sealing and rotating connection with the fixed ring, a gear ring is fixedly connected to the bottom of the fixed ring, and the gear ring is meshed with the gear. As a further optimization scheme of the invention, the stirring mechanism comprises a motor fixedly connected to the top of the leaching tank, the output end of the motor is fixedly connected with a rotating shaft, the rotating shaft penetrates through the diversion bucket and is in sealed rotating connection with the diversion bucket, the bottom of the rotating shaft is in sealed rotating connection with the inner bottom of the leaching tank, an air flow channel is formed in the bottom of the rotating shaft, an air ejector tube is fixedly connected to the side wall of the rotating shaft, the air ejector tube is located below the grinding net, the air ejector tube is communicated with the inside of the air flow channel, air ejector holes are formed in the outer surface of the air ejector tube, and a stirring plate is fixedly connected to the outer surface of the rotating shaft and located below the air ejector tube. As a further optimization scheme of the invention, the stirring plate is fixedly connected with an air injection pipe, the air injection pipe is provided with an air injection hole, the air injection pipe is fixedly communicated with an air pipe, the air pipe is fixedly connected with the rotating shaft, and the air pipe is communicate