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Ultrasound Reactor
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Ultrasound controlled Leaching Process for treatment of different materials

Published: 7 November 2017

High power ultrasound has potential to increase both leaching recoveriy and kinetics. The project focus on minerals and by-products known as hard to be leached (Scheelite concentrate and Speiss).

The goal is to modify and optimize a scalable ultrasonic cavitation reactor to provide an energy efficient leaching process at a lower temperature and under atmospheric pressure conditions. Important aspects are:

  1. Create a homogeneous slurry of the particles to be leached with leaching reagents
  2. Adapt the excitation signal to the optimum frequency response of the reactor
  3. Obtain cavitation bubbles sizes proportional to the particle size distribution within the slurry

The results are expected to show that ultrasound controlled cavitation can improve the efficiency of the leaching process. Optimization of process parameters such as flow rate, concentration, temperature, cavitation intensities, and signal frequency content is crucial for accelerated and energy-efficient leaching. The results will lead to the establishment of cooperation with two industry partners for implementation in an upscale project.

Industrial support: Boliden