Method of activation of low-kaolinite mineral feedstocks, activated materials obtainable therefrom and uses thereof

A method for the mechanochemical activation of low kaolinite feedstocks, said method comprising the following steps:

• a) providing a solid feedstock comprising a phyllosilicate mineral, wherein the feedstock has a kaolinite content of less than 50 wt. % as determined by XRD, preferably less than 20 wt. %, more preferably less than 10 wt. %;
• b) providing a gas;
• c) introducing said feedstock and said gas into a mechanical agitation unit;
• and
• d) subjecting the material of said feedstock to a mechanical agitation operation in the presence of said gas in said mechanical agitation unit.