| abstract |
Process for preserving an aqueous preparation of mineral material, characterized in that the process comprises the following steps: (a) providing an aqueous preparation of at least one mineral material; (b) adding to the aqueous preparation of step a) one or more sources of lithium ions in an amount such that the total amount of lithium ions in the aqueous preparation is 750 to less than 3,000 ppm, calculated relative to the water in the preparation ; (c) adding to the aqueous preparation of step a) one or more sources of sodium and / or potassium and / or magnesium ions in an amount such that the total amount of sodium and / or potassium and / or magnesium ions in the aqueous preparation is of 3,000 less than 7,500 ppm, calculated in relation to the water in the preparation, where steps (b) and (c) can be performed simultaneously, or separately in any order. |