[CuriousEngineer]

Hi guys,

I would appreciate your thoughts regarding a newly developed process for the recovery of titanium dioxide from waste paper. It uses an aqueous non-oxidising mineral acid.
   
For details check out:

http://www.avalanche-research.de/projects/5768f63e63d6180300c93de4

As you can see its a patent. So maybe you guys know if it makes sense or is already used. Thanks.

[P]

Maybe I'm not an expert in the material, but have used/purchased it for years. My first questions would be:

What are the costs involved compared to mining?
How much can be extracted this way per day/week/month compared to mining?
What is the future like for the natural supply of TiO2 through mining? Are we running out?
How does the imminent re classification of TiO2 to a class 1B carcinogen effect plans for re-cycling it?