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CN-121972446-A - Hollow pulse stirring integrated device and method for mineral processing

CN121972446ACN 121972446 ACN121972446 ACN 121972446ACN-121972446-A

Abstract

The invention discloses a hollow pulse stirring integrated device and method for mineral processing, and belongs to the technical field of mineral processing and hydrometallurgy. The device comprises a pulse emitter, a stirrer and an integrated control box. The pulse emitter adopts a hollow piston type structure and is provided with an axial through central channel, and a stirring shaft of the stirrer penetrates through the central channel, so that the deep integration and synchronous independent operation of the pulse generation unit and the mechanical stirring unit in physical space are realized. When the device works, the pulse emitter converts electric energy into mechanical vibration to drive the hollow piston to reciprocate, and then 360-degree omnibearing high-intensity sound wave radiation is carried out to surrounding ore pulp media through the shell. The invention has multiple functions, can finish the operations of mineral surface pretreatment, flotation reagent removal, ultrasonic intensified leaching and the like by adjusting parameters, and has the advantages of good treatment effect, low energy consumption, compact structure and flexible operation.

Inventors

  • LI MINGXIAO
  • ZHANG HANPING
  • ZHANG XINGZHI

Assignees

  • 昆明冶金高等专科学校

Dates

Publication Date
20260505
Application Date
20260211

Claims (7)

  1. 1. The hollow pulse stirring integrated device for mineral processing is characterized by comprising a pulse emitter (1), a stirrer (2) and an integrated control box (3) for controlling the pulse emitter and the stirrer; the pulse transmitter (1) comprises: a cylindrical housing (11) having both ends penetrating therethrough to form a mounting chamber; The hollow piston column (15) is coaxially arranged in the mounting cavity of the shell (11), and the outer cylindrical surface of the piston column (15) is in sliding sealing fit with the inner wall of the shell (11) through at least one sealing ring (16) so that the piston column (15) can axially reciprocate in the shell (11); A piezoelectric driving unit provided at one end of the housing (11) for driving the piston rod (15) to reciprocate; The stirrer (2) comprises a stirring motor (21) and a stirring shaft (22), wherein the stirring shaft (22) penetrates through a central channel of the pulse emitter (1) and is in non-contact with the piston column (15), and the lower end of the stirring shaft (22) is connected with a stirring paddle (23).
  2. 2. The device according to claim 1, wherein the piezoelectric driving unit comprises a front film (12) covered on one end of the housing (11), a circular tube type piezoelectric ceramic body (13) which is adhered and fixed on the front film (12), and a pre-tightening component (14) for providing axial pre-tightening force for the circular tube type piezoelectric ceramic body (13).
  3. 3. The device according to claim 1 or 2, wherein the vibration energy of the piston column (15) is radiated in 360 degrees in all directions to surrounding medium through the cylinder wall of the housing (11) closely matched with the piston column when the piston column reciprocates, and the housing (11) is made of corrosion-resistant 316L stainless steel.
  4. 4. The device according to claim 1, wherein the integrated control box (3) provides an electric signal with the frequency being adjustable within 15 khz-40 khz and the maximum output power being 5kW for the piezoelectric driving unit of the pulse emitter (1), the integrated control box (3) provides a power supply with the maximum driving power being 750W for the stirrer (2), and the overall power supply voltage is 220V.
  5. 5. The device according to claim 1, characterized in that the device further comprises a treatment vessel (4) for containing mineral slurry, the pulse emitter (1) is fixedly mounted in the treatment vessel (4) by means of a bracket, and the wall part of the housing (11) thereof is immersed in the slurry, and a discharge opening (41) is provided at the lower end of one side of the treatment vessel (4).
  6. 6. A method of mineral slurry treatment using the apparatus of any one of claims 1 to 5, comprising the steps of: s1, placing mineral slurry in a treatment container; s2, starting the stirrer through an integrated control box to mechanically stir the slurry; s3, starting the pulse emitter through the integrated control box while stirring, and applying an omnibearing and high-intensity sound wave pulse effect on the slurry; s4, selecting and executing one of the following processing modes on the integrated control box according to the target process: a pretreatment mode, namely cleaning an oxide layer and impurities on the surface of the mineral by pulse action; a reagent removing mode, namely removing a floatation reagent physically adsorbed on the surface of the mineral through pulse action; Leaching enhancement mode-promoting the diffusion of the leaching agent by pulsing and acting on the fresh surface of the mineral.
  7. 7. The method of claim 6, wherein in the leaching enhancement mode, the pulse sound intensity is controlled to be 5-8W/cm 2, and the action time is adjusted according to the properties of the slurry, so as to improve the leaching rate and reduce the dosage of the leaching agent.

Description

Hollow pulse stirring integrated device and method for mineral processing Technical Field The invention relates to the technical field of mineral processing and hydrometallurgy, in particular to a mineral slurry treatment device integrating high-intensity sound wave pulse emission and mechanical stirring functions and an application method thereof. Background In the pretreatment links of key processes such as mineral flotation and leaching, the surfaces of mineral particles are often subjected to modification treatment, such as removal of oxide layers and impurities, removal of selectively adsorbed flotation agents, or physical reinforcement of leaching reactions. At present, the process links are largely dependent on the use of a large amount of chemical agents, or serial treatment is performed by adopting separate physical equipment, and the following technical defects generally exist: Firstly, the surface cleaning or leaching is carried out by relying on the strong chemical reagent, so that the cost is high, the operation is complex, and the environmental pollution and the subsequent wastewater treatment problems are brought. And the method such as ion exchange is limited in processing capacity, so that the method is difficult to adapt to large-scale industrial production. And secondly, when the mechanical stirring and ultrasonic treatment are adopted for separate equipment combination, the process flow is long, the equipment layout is bloated, and the energy consumption is high. The problem is that the traditional ultrasonic transducer is usually in an end face emission type, the energy of a sound field formed in a stirring container is unevenly distributed, obvious dead angles or attenuation areas exist, and efficient and uniform space coupling is difficult to realize with a macroscopic flow field formed by mechanical stirring. This results in low energy utilization, inability to uniformly and sufficiently treat the mineral particle population, poor consistency of treatment effect, and restriction of further improvement of treatment efficiency and quality. In addition, the prior art lacks an integrated physical treatment means capable of flexibly switching and adapting to various pretreatment processes. Therefore, there is a strong need in the art for a device that can deeply cooperate and integrate the high intensity physical energy field and the strong mixed flow field in space and time to overcome the above drawbacks and achieve efficient, clean, and low cost pretreatment of minerals. Disclosure of Invention The invention aims to overcome the defects of the prior art and provide a hollow pulse stirring integrated device and method for mineral processing, which have the advantages of compact structure, uniform and efficient treatment and multiple functions. In order to achieve the above purpose, the invention adopts the following technical scheme: In one aspect, the invention provides a hollow pulse agitation integrated device for mineral processing, which is characterized in that a hollow piston type pulse emitter is creatively designed and physically integrated with an agitator. The device comprises a pulse emitter, a stirrer and an integrated control box for controlling the pulse emitter and the stirrer; The pulse emitter comprises a cylindrical shell, a pulse generator and a pulse generator, wherein two ends of the cylindrical shell are communicated to form a mounting cavity; The hollow piston column is coaxially arranged in the mounting cavity of the shell, and the outer cylindrical surface of the piston column is in sliding sealing fit with the inner wall of the shell through at least one sealing ring, so that the piston column can axially reciprocate in the shell; A piezoelectric driving unit disposed at one end of the housing for driving the piston rod to reciprocate; The stirrer comprises a stirring motor and a stirring shaft, wherein the stirring shaft penetrates through a central channel of the pulse emitter and is in non-contact with the piston column, and the lower end of the stirring shaft is connected with a stirring paddle. Further, the piezoelectric driving unit comprises a front film covered on one end of the shell, a circular tube type piezoelectric ceramic body attached and fixed on the front film, and a pre-tightening part for providing axial pre-tightening force for the circular tube type piezoelectric ceramic body. Furthermore, when the piston column reciprocates, vibration energy of the piston column is subjected to 360-degree omnidirectional radiation to surrounding media through the cylinder wall of the shell which is tightly matched with the piston column, and the shell is made of corrosion-resistant 316L stainless steel. Furthermore, the integrated control box provides an electric signal with the frequency being adjustable within the range of 15 kHz-40 kHz and the maximum output power being 5kW for the piezoelectric driving unit of the pulse transmitter, provides a power s