Process for manufacturing high solids aqueous suspensions of mineral material(s) comprising the steps of: a) providing at least one mineral material, b) preparing an aqueous suspension comprising the at least one mineral material of step a) c) grinding the mineral material of the resulting aqueous suspension of step b), d) concentrating the aqueous suspension of ground mineral material of step c) by flash cooling, characterized in that - at least one dispersing agent is added to the aqueous suspension of step b), wherein the at least one dispersing agent is added completely before grinding step c), or stepwise before and during grinding step c), or before and during and/or after grinding step c), wherein the at least one dispersing agent is independently selected from the group comprising homopolymers or copolymers of polycarboxylic acids such as acrylic, methacrylic acids or maleic acid; and/or their salts, e.g. partially or completely neutralized acid salts with sodium, lithium, potassium, ammonium, calcium, magnesium, strontium and/or aluminium or mixtures thereof, preferably sodium, calcium and magnesium; or derivatives of such acids such as esters based on, e.g., acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, e.g. acryl amide or acrylic esters such as methylmethacrylate, or mixtures thereof; alkali polyphosphates; or mixtures thereof, and wherein - the aqueous suspension, before step d), has a solids content of from above 70 to 80 wt% based on the total weight of the suspension, and wherein - in step d), the aqueous suspension is exposed to a pressure of from 200 to 500 mbar, and wherein - the final solids content of the aqueous suspension obtained after step d) is from 80 to 85 wt%. a) providing at least one mineral material, b) preparing an aqueous suspension comprising the at least one mineral material of step a) c) grinding the mineral material of the resulting aqueous suspension of step b), d) concentrating the aqueous suspension of ground mineral material of step c) by flash cooling, - at least one dispersing agent is added to the aqueous suspension of step b), wherein the at least one dispersing agent is added completely before grinding step c), or stepwise before and during grinding step c), or before and during and/or after grinding step c), wherein the at least one dispersing agent is independently selected from the group comprising homopolymers or copolymers of polycarboxylic acids such as acrylic, methacrylic acids or maleic acid; and/or their salts, e.g. partially or completely neutralized acid salts with sodium, lithium, potassium, ammonium, calcium, magnesium, strontium and/or aluminium or mixtures thereof, preferably sodium, calcium and magnesium; or derivatives of such acids such as esters based on, e.g., acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, e.g. acryl amide or acrylic esters such as methylmethacrylate, or mixtures thereof; alkali polyphosphates; or mixtures thereof, and wherein - the aqueous suspension, before step d), has a solids content of from above 70 to 80 wt% based on the total weight of the suspension, and wherein - in step d), the aqueous suspension is exposed to a pressure of from 200 to 500 mbar, and wherein - the final solids content of the aqueous suspension obtained after step d) is from 80 to 85 wt%.