Use of acrylic polymers neutralized by lithium as dispersing agents or grinding aid agents of mineral materials in an aqueous medium

摘要

The invention pertains to the use of a homopolymer of acrylic acid or a copolymer of acrylic acid with a water-soluble monomer, as a dispersing agent or grinding aid agent in a method for manufacturing an aqueous suspension of mineral materials through dispersion and/or grinding, characterized in that the carboxylic groups of said agent are fully or partially neutralized by the lithium ion and in that it exhibits a viscosity index of between 0.01 and 0.08.

主权项

1. A method of manufacturing an aqueous suspension comprising dispersing and/or grinding a mineral material in the presence of an agent comprising a homopolymer of acrylic acid or a copolymer of acrylic acid with a water-soluble monomer wherein:
a) the carboxylic groups of said agent are fully or partially neutralized by lithium, and b) said agent has a viscosity index of between 0.01 and 0.075.