Process for manufacturing calcium carbonate materials having a particle surface with improved adsorption properties
AssigneeOmya International AG
InventorsPatrick A.C. Gane, Matthias Buri, Beat Karth, Claudia Pudack
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Abstract
The invention relates to a process for manufacturing calcium carbonate materials having a particle surface with improved adsorption properties of dispersant, using at least one lithium ion-containing compound, the calcium carbonate material obtained by this process, the use of the calcium carbonate materials in paper, paints and plastics, as well as the use of the lithium ion-containing compounds in the manufacturing process.
Claims42
Process for manufacturing calcium carbonate materials having a particle surface with improved adsorption properties of dispersant comprising the steps of:
- a. providing at least one calcium carbonate comprising material in the form of an aqueous suspension or in dry form,
- b. providing at least one lithium ion containing compound selected from the group consisting of lithium hydroxide or lithium oxide or inorganic and/or organic monomeric lithium salts selected from the group comprising mono- and/or polyvalent acid salts such as lithium carbonate, lithium sulphates, lithium citrate, lithium hydrogen carbonate, lithium acetate, lithium chloride, lithium phosphates, in dry form or in aqueous solution, and mixtures thereof,
- c. combining the at least one lithium ion containing compound of step b) with the at least one calcium carbonate material of step a).
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Dependencies are inferred from the claim text.