by | Jun 29, 2022 | MACH Mindest


It may not seem like much of a big deal, but your choice between lances and the MACH REACTOR for injecting gas into a pulp can be an absolute game-changer for your operation. When going through the separate attributes between Lances and the MACH REACTOR, you can see the vast differences they have from each other and the direct effects they can have on your operation.

So, what defines these different methods of gas introduction into mine pulp?


What are Lances?

A lance is a long-standing piece of technology in the metallurgical industry that is used in the gold cyanidation process for injecting oxygen into pulp.

Lances are cheap and easy to install but have an extremely low efficiency and high wear rates.

Furthermore, they do precious little to improve mixing and mass transfer.


What is the MACH REACTOR?

The MACH REACTOR is a cavitation device that employs the Bernoulli’s Principle to create pico-bubbles within mine pulp. The MACH harnesses the extreme and otherwise negatively perceived power of cavitation to effect specific desired changes to the pulp.

The process of cavitation includes the passing of slurry through a series of venturis that reach speeds that come close to the speed of sound. Cavitation utilizes Bernoulli’s Principle, which states, “an increase in the speed of a fluid occurs simultaneously with a decrease in static pressure or a decrease in the fluid’s potential energy.” Cavitation creates a highly reactive environment for mass transfer and chemical reaction allowing certain reactions to take place that would otherwise not be possible.



How does Cavitation work within the MACH REACTORTM?


Cavitation (also known as Hydrodynamic Cavitation) is the functional heart and soul of the revolutionary MACH REACTORTM.  The MACH REACTORTM uses its power of cavitation to create pico-bubbles that latch onto ultra-fine minerals and bring them to surface in flotation processes. The pico-bubbles that are generated during cavitation also greatly assist with the dissolution of oxygen gas which is essential for efficient leaching of gold. These advantageous pico-bubbles boost an operations return and minimizes on wasted materials.

The MACH REACTORTM has one of the longest lifespans out of all shear reactors, matching up to different project lifespans of 10 years or more. Not only does it have a long lifespan, but the MACH’s durable engineering makes it so that it has no need for repairs, replacements, or maintenance.

If that’s not enough, the MACH REACTORTM is the only reactor on the market that uses cavitation! So, why wait? Now is the time to experience the power of cavitation for yourself!

To learn more about cavitation and its use in the MACH REACTORTM, visit

#cavitation #lance #metallurgy #reactor #extraction #minerals