Ultrasonic Leaching Sono-Leach Of Precious Metals For Sale

Ultrasonic Leaching of Precious Metals

Power ultrasound is an effective technique for extracting metals such as precious metals and rare earth elements. This process of ultrasonic-assisted solid-liquid extraction, known as sono-leach, liquefaction, or washing, can be easily installed with robust industrial ultrasonicators to filter rare earths from ores, treat mining slurries for more complete recovery, or separate high-value metals (e.g., Cu, Zn, Ni) from less valuable metals. Ultrasonic leaching promotes the reaction through mass transfer and dissolution, achieving higher yields in shorter extraction times.

• Higher yield
• More complete leaching
• Reduced reagent consumption
• Milder conditions
• Simple feasibility testing
• Linear scale-up
• Easy installation of full commercial ultrasonic systems
• Very robust ultrasonicators for large volume flows

Ultrasonic Leaching of Precious Metals: Faster Extraction with Cavitation Chemistry

Recovery of precious metals such as gold, silver, platinum, palladium, and rhodium is a cornerstone of modern metallurgy and recycling, especially in processing ores, concentrates, and secondary sources like electronic scrap and catalytic converters. While traditional leaching has a long history, it is often limited by slow mass transfer, surface passivation, incomplete liberation of valuable phases, and high reagent consumption. Ultrasonic leaching overcomes many of these bottlenecks by adding high-intensity ultrasound to the leach slurry, significantly intensifying reaction kinetics through a phenomenon known as acoustic cavitation.

Core Mechanism: Acoustic Cavitation

When high-power ultrasound is coupled into a liquid, it creates rapidly forming and collapsing microscopic cavitation bubbles. This collapse generates extreme local conditions including:

• Intense micro-mixing and shear forces
• High-speed microjets directed at solid surfaces
• Localized hot spots (very high temperatures and pressures for microseconds)

Although these effects occur on a microscopic scale, they strongly impact the macroscopic leaching process by continuously renewing the reactive surface and accelerating the transport of reagents to and from solid particles.