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Gas sparging is a traditional gas-to-liquid mass transfer technique used in metallurgy to dissolve and recover minerals or metals from ore slurry. It involves bubbling oxygen or air into the ore slurry, which often leads to excessive use of air and costly chemical substances such as reagents.

We've come up with a solution that simplifies this process for use in gas sparging reactors.

Our GL Nozzle intensifies the gas sparging process by using a high velocity jet design to break up gas bubbles in the nozzle. A gas buffer layer is also incorporated to reduce erosion on the nozzle's surface. Together, these techniques work to lower oxygen and reagent use for substantial cost savings.


GL Nozzle employs a high velocity jet design to break up gas bubbles in the nozzle. A gas buffer-layer technique reduces erosion of the slurry particles on the nozzle surface. This reduces oxygen, and reagent consumption.


A GL Nozzle has been installed in a clean-in-place (CIP) tank at gold mine in Victoria, Australia.

Intellectual property

CSIRO has developed significant know-how and the GL Nozzle is manufactured under licence in Australia for domestic market.

The team

Our team consist of experienced fluid dynamicists and chemical engineers with strong process expertise. We focus on fluid dynamics challenges in the mineral processing area, developing technologies to improve slurry mixing, transport and erosion as well as customised services for industry.

Could this technology provide you with a competitive edge?

Contact us to find out more about our licensing and investment options.

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