Barium Sulfate manufacturing process and use.

Process for the production of barium sulfate in the form of particles having an average size d 50 of 0.1 to 10 mim, precipitated by mixing a solution containing barium and sulfate, wherein separate filter cake is suspended in water the suspension is mixed with organic additive and then dried in a dryer spray or mill dryer, selected organic additive from one or more of the following materials or groups of materials: carboxylic acids, alcohols, polyhydric alcohols such as pentaerythritol , neopentyl glycol and trimethylpropanol, polyalcohols such as polypropylene glycol and polyethylene glycol, organic esters such as neopentyl glycol dibenzoate-, organic sulfones of the formula RSO2R, organic ketones [R - (= O) -R], organic nitriles (RCN), organic sulfoxides (R2 -SO), organic amides (R- (C = O) -N''R or R- (S = O) -ONR''R).