Nernst Theory | What is the Nernst Boundary Layer Theory?💡🤯

Nernst Theory | The Nernst Boundary Layer Theory Explored😏

 

Once the chemical conditions for gold leaching have been satisfied i.e. both cyanide and oxygen are present in solution in excess, then diffusion becomes the rate-limiting step.

This is because the gold leach reaction takes place in a heterogeneous medium with gases, solution, and solids involved in the reaction process. 💥

Nernst Theory so where did it start?

Nernst theory | The boundary layer was first proposed by a scholar called Nernst who proposed that there was a clean water layer surrounding every particle in a slurry medium. Reactants and products have to diffuse through this layer for a successful reaction to take place.

The cavitating conditions within the venturis of the MACH also generate extremely high Reynolds numbers with intense mixing that thins the boundary layer and speeds up diffusion through it.

If there are passivation layers around the particle then these will be cleaned off with the MACH and if the passes are high enough then the MACH can also cause particle breakage to improve liberation.

It was first proposed by a German scientist by the name of Nernst, in 1904 👨‍🔬.

Nernst Theory | The Nernst Boundary Layer

This animation shows how the revolutionary MACH REACTOR™ accelerates the gold leach reaction by improving diffusion across the Nernst Boundary Layer 🔥.

👎THE NO MACH CASE:

The first part of the animation shows the slow diffusion of oxygen and cyanide across a thick boundary layer, and through the water-soluble, porous reaction layer, to reach the reaction surface and aurocyanide diffusing out through the reaction layer, and across the thick boundary layer to reach the outskirts of the boundary layer. A greater distance to diffuse through equates to slower reaction kinetics.

👍😮WITH THE MACH REACTOR™:

https://youtu.be/VMfyZOAqOnE

The second part of the animation shows how the high shear, cavitation, and intense mixing in the high-speed venturis of the MACH are able to significantly thin down the boundary layer to drastically accelerate the reaction rate by giving the reactants and products a much shorter distance to diffuse through.

Surface cleaning and particle breakage with the MACH! ✔

What sets the MACH apart from the competition is not only its exceptional ability to reduce boundary layer thickness and accelerate mass transfer for heterogeneous reactions but, more importantly, is its ability to remove surface coatings and improve liberation through particle breakage which often becomes the rate-limiting step once the chemical and diffusion requirements have been met.

This is facilitated by the high energy re-entrant jets that split cavitating bubbles that have already nucleated on valuable mineral surfaces, resulting in cleaning of the mineral surface or grain boundary breakage to improve liberation. 📈

This is important as often leaching reactions becomes limited by passivating layers or by incomplete liberation after the milling step. 💡

The MACH works to maximize the leach rate and extent to sweat your orebody like never before! 🔥

Nernst Theory Explained!

https://youtu.be/wKzaw-KtbwM

Contact me today to get your very own MACH REACTOR™ installed into your metallurgical operation – no matter where you are in the world! We are excited to have you and your company on board for the MACH REVOLUTION!

What sets the MACH apart from the competition is not only its exceptional ability to reduce boundary layer thickness and accelerate mass transfer for heterogeneous reactions but, more importantly, is its ability to remove surface coatings and improve liberation through particle breakage which often becomes the rate-limiting step once the chemical and diffusion requirements have been met.

This is facilitated by the high energy re-entrant jets that split cavitating bubbles that have already nucleated on valuable mineral surfaces, resulting in cleaning of the mineral surface or grain boundary breakage to improve liberation. 📈

This is important as often leaching reactions become limited by passivating layers or by incomplete liberation after the milling step. 💡

The MACH works to maximize the leach rate and extent to sweat your orebody like never before! 🔥

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