| abstract |
The invention consists in the use of dispersing agents, in a process of manufacture of an aqueous dispersion of mineral matter, by: (a) grinding with a small amount of dry extract (≤ 40%) of the said mineral matter in water without a dispersing agent and/or grinding aid agent, (b) concentration with a large amount of dry extract (≥- 65%) by mechanical and/or thermal means, characterized in that: - at least one dispersing agent is introduced between stage (a) and stage (b), and/or during stage (b), and/or during and after stage (b). - in the form of a combination: - of at least one homopolymer of acrylic acid, - and of at least one fluorinated mineral compound. |