Manufacture of a Material on the Basis of Calcium- and/or Magnesium-Carbonate Having a Reduced Decrepitation Tendency

摘要

Process for the manufacture of a material on the basis of calcium- and/or magnesium carbonate having a reduced decrepitation tendency, wherein a material on the basis of calcium- and/or magnesium carbonate is treated with at least one additive selected among alkali metal compounds and/or acids and/or alkaline earth metal compounds in an amount of 0.05 to 5 wt. % based on the amount of the material on the basis of calcium- and/or magnesium carbonate. Also claimed are the material obtainable by the process and showing reduced decripitation tendancy and the use of such material in the manufacture of glass.