Compositions Comprising One or More Calcium-Magnesium Compounds in the Form of Compacts

摘要

A composition comprising at least one calcium-magnesium compound fitting the formula aCaCO₃.bMgCO₃.xCaO.yMgO.zCa(OH)₂.tMg(OH)₂.uI, wherein I represents impurities a, b, z, t and u each being mass fractions ≧0 and ≦50%, x and y each being mass fractions ≧0 and ≦100%, with x+y≧50% by weight, based on the total weight of said at least one calcium-magnesium compound, which is in the form of particles, said composition having an calcium and magnesium accrued content in the form of oxides, greater than or equal to 20% by weight and being in the form of compacts, each compact being formed with said compacted and shaped particles of calcium-magnesium compounds, said compacts having a Shatter Test Index of less than 10% allowing very good resistance to falling and good resistance to ageing, manufacturing method and use thereof.