Magbeach actually posted a great report on pyrometallurgical techniques on Dec 18/22. A very good read btw.
https://link.springer.com/article/10.1557/s43581-022-00042-y
Instead of bring up all the positives about the article, Sorrenson responded negatively to it of course by posting concerns about the viability of Pyrogenesis' aluminum processing vs new technology by Elysis (in a roundabout way).
Interesting artical and a key "mention " is the Inert Anode which will replace the carbon anodes. The carbon savings is montrous around 85% reduction . The carbon anode is history and any new and substantial retrofits will be using the inert ( ceramic) anodes.
"It is worth mentioning that Elysis, a joint venture between Alcoa and Rio Tinto, has announced the implementation of an inert anode technology by the end of 2023."
Elysis Rio Tinto Alcoa JV
Janneman,
I asked the same question back in October, and Rodayna answered on Oct. 14.
Here's her reply.
Regards,
Snowdrift
Dear Snowdrift,
Thank you for your question. Please don’t hesitate to ask whatever questions you have in mind and don’t worry whether it was asked before or not.
I would like to confirm and assure you that Elysis’ technology wouldn’t affect the use of Drosrite™ system in the aluminum industry. Basically, Elysis’ technology would replace the carbon anodes in the aluminum smelting process with inert anodes, which would produce oxygen as a by-product instead of carbon dioxide.
As for PyroGenesis’ DROSRITE™ system, it is a sustainable process for maximizing metal recovery from dross, a waste generated in the metallurgical industry such as in aluminum smelting. The dross is caused by oxygen coming into contact and reacting with molten aluminum to form a “scum” or “oxide phase” on top of the metal pool. The oxides act like a sponge, floating on the surface and soaking up metallic aluminum beneath it. As such, significant amount of valuable aluminum will be lost when trying to skim the oxides out.
Having said that, it is important to understand that whether the smelting process is environmentally friendly (“green”) or not, a waste stream will still be generated during the aluminum smelting process and will still need to be treated in order recover the valuable metals it contains. PyroGenesis could complement the Elysis’ process by eliminating carbon emissions and wastes from landfill. Combined, we could address a significant portion of smelter’s environmental issue
I hope this helps.
Rodayna on behalf of Pete