Efficient multiphase-flow graded-separation, concentration, and purification system for argillaceous sandstone uranium ore

Patent metadata

Field	Value
Publication number	US-2025361583-A1
Application number	US-202519296169-A
Country	US
Kind code	A1
Filing date	Aug 11, 2025
Priority date	Jan 9, 2025
Publication date	Nov 27, 2025
Grant date	—

Abstract

An efficient multiphase-flow graded-separation, concentration, and purification system for argillaceous sandstone uranium ore includes a hydraulic tossing washing and scattering pretreatment device, a high-frequency linear vibration grading device, a first-stage multiphase-flow swirling grading device, an energy-gathering ultrasonic scrubbing device, a second-stage multiphase-flow swirling grading device, a high-frequency linear vibration dewatering device, an efficient uniform-mixing and activating system and a conditioning and pressing dewatering system. The present disclosure implements intensive mud-sand stripping of crushed argillaceous sandstone uranium ore, fine graded-separation of material, and efficient uniform-mixing and activating and deep efficient dewatering of fine-particle argillaceous material. Finally, four types of core material of coarse sand material, fine sand material, dry tailings residue and a high-concentration uranium ore leaching solution are formed through continuous work. Efficient multiphase-flow graded-separation, concentration and purification of the argillaceous sandstone uranium ore are implemented, and an intensive extraction rate of uranium ore resources is improved.

First claim

What is claimed is:

1 . A multiphase-flow graded-separation, concentration and purification system for argillaceous sandstone uranium ore, comprising a hydraulic tossing washing and scattering pretreatment device, a high-frequency linear vibration grading device, a first-stage multiphase-flow swirling grading device, an energy-gathering ultrasonic scrubbing device, a second-stage multiphase-flow swirling grading device, a high-frequency linear vibration dewatering device, an efficient uniform-mixing and activating system and a conditioning and pressing dewatering system; wherein
a discharge port of the hydraulic tossing washing and scattering pretreatment device is in communication with a feed port of the high-frequency linear vibration grading device, a filtering particle diameter of the hydraulic tossing washing and scattering pretreatment device is designed to be N1, and slurry with a particle diameter less than N1 is conveyed to the high-frequency linear vibration grading device; a discharge port of the high-frequency linear vibration grading device is in communication with a feed port of the first-stage multiphase-flow swirling grading device, a sieving particle diameter of the high-frequency linear vibration grading device is designed to be N2, N2<N1, and material with a particle diameter less than N2 is conveyed to the first-stage multiphase-flow swirling grading device; a grading median particle diameter of the first-stage multiphase-flow swirling grading device is designed to be N3, N3<N2, material with a particle diameter ranging from N3 to N2 is discharged from an outlet at a lower end and guided into the energy-gathering ultrasonic scrubbing device, and fine-particle light material with a particle diameter less than or equal to N3 and a large amount of water are guided to the efficient uniform-mixing and activating system along a central overflow port of a swirling flow field; the energy-gathering ultrasonic scrubbing device is configured for stripping and scattering remaining clay particles covering surfaces of sand, to separate mud from the sand, and a discharge port of the energy-gathering ultrasonic scrubbing device is in communication with a feed port of the second-stage multiphase-flow swirling grading device; a grading median particle diameter of the second-stage multiphase-flow swirling grading device is designed to be N3, the clay particles having a particle diameter less than or equal to N3 and stripped by the energy-gathering ultrasonic scrubbing device and a large amount of water are guided to the efficient uniform-mixing and activating system along the central overflow port of the swirling flow field, and sand material having a particle diameter ranging from N3 to N2 and formed through mud-sand grading is guided to the high-frequency linear vibration dewatering device; the efficient uniform-mixing and activating system comprises a pneumatic-energy miscible-flow uniform-mixing device and a micro-electrolysis activating device, overflow ports of the first-stage multiphase-flow swirling grading device and the second-stage multiphase-flow swirling grading device are in communication with the pneumatic-energy miscible-flow uniform-mixing device, a discharge port of the pneumatic-energy miscible-flow uniform-mixing device is in communication with the micro-electrolysis activating device, and a discharge port of the micro-electrolysis activating device is in communication with the conditioning and pressing dewatering system; and the conditioning and pressing dewatering system is configured for physically and chemically conditioning and condensing mixed slurry material subjected to chemical leaching, and then performing high-pressure plate-frame pressing dewatering, to implement solid-liquid separation.

2 . The multiphase-flow graded-separation, concentration and purification system according to claim 1 , wherein the energy-gathering ultrasonic scrubbing device comprises a scrubbing cylinder, a reverse stirring system, an energy-gathering ultrasonic vibrator and a slurry storage tank; the scrubbing cylinder is provided with a feed hopper and an overflow residue discharge pipe; the reverse stirring system is arranged in the scrubbing cylinder and comprises a rotating shaft and at least four layers of reverse stirring blade structures arranged in an axial direction of the rotating shaft, each layer of reverse stirring blade structure comprises several blades arranged in a circumferential direction of the rotating shaft, and inclination directions of blades of two adjacent layers of reverse stirring blade structures relative to the rotating shaft are opposite; the energy-gathering ultrasonic vibrator comprises an ultrasonic transducer and an energy-gathering vibration transmitting rod, the ultrasonic transducer is fixed outside the scrubbing cylinder, and the energy-gathering vibration transmitting rod is connected to the ultrasonic transducer and located inside the scrubbing cylinder; and the slurry storage tank is connected to the overflow residue discharge pipe, and a discharge port of the overflow residue discharge pipe is directly guided to the slurry storage tank.

3 . The multiphase-flow graded-separation, concentration and purification system according to claim 2 , wherein an included angle between each of the several blades of the reverse stirring blade structures and the rotating shaft does not exceed 45°.

4 . The multiphase-flow graded-separation, concentration and purification system according to claim 2 , wherein the energy-gathering vibration transmitting rod is provided with several spherical recesses at intervals in an axial direction of the energy-gathering vibration transmitting rod.

5 . The multiphase-flow graded-separation, concentration and purification system according to claim 2 , wherein the energy-gathering ultrasonic vibrator has a frequency of 20 KHz to 25 KHz and an amplitude of 80 μm to 100 μm.

6 . The multiphase-flow graded-separation, concentration and purification system according to claim 2 , wherein the slurry storage tank is arranged at a bottom of the scrubbing cylinder, a cleaning discharge port is arranged at the bottom of the scrubbing cylinder as a shutdown discharge cleaning and draining channel, and a gate valve in a normally closed state is arranged at the bottom of the scrubbing cylinder.

7 . The multiphase-flow graded-separation, concentration and purification system according to claim 2 , wherein the slurry storage tank is provided with a clean water pipe for injecting clean water; the slurry storage tank is further internally provided with a slurry uniform-mixing device; and a slurry discharge port and a high-pressure centrifugal slurry pump are arranged at a bottom of the slurry storage tank, and the slurry material is lifted and discharged through the high-pressure centrifugal slurry pump.

8 . The multiphase-flow graded-separation, concentration and purification system according to claim 2 , wherein the scrubbing cylinder is internally provided with a single bin or a plurality of bins according to production capacity requirements, and each bin is provided with one reverse stirring system and the energy-gathering ultrasonic vibrator;
and when the plurality of bins are provided, an interior of the cylinder is divided into the plurality of bins by arranging middle baffles, communication channels are reserved at bottoms or tops of the middle baffles for communication between the bins, and the communication channels are alternately arranged in a vertical direction to guarantee that the material fully passes through a stirring area.

9 . The multiphase-flow graded-separation, concentration and purification system according to claim 1 , wherein the pneumatic-energy miscible-flow un

Assignees

• Inst Rock & Soil Mech Cas

Inventors

• Xue Qiang
• Li Jiangshan
• Zhong Feng
• Chen Xin
• Wan Yong
• Wei Houzhen
• Zhu Runliang

Classifications

• C22B60/0221

  by leaching · CPC title

• C22B60/0208 Primary

  preliminary treatment of ores or scrap · CPC title

• B01D36/00

  Filter circuits or combinations of filters with other separating devices · CPC title

• B01F33/83612

  by crushing or breaking · CPC title

• B01F33/836

  combining mixing with other treatments · CPC title