Method for making sintered dolomite with a low porosity and a good hydration stability

In a method for making a dolomite sinter with a low porosity and a good hydration stability made of milled raw dolomite comprising the steps of adding foreign oxides to milled pure raw dolomite powder having a low content of foreign oxides, pressing the milled raw dolomite powder-foreign oxide admixture into briquets, and heating the briquets to a sintering temperature, the improvement comprising:

• adding a member selected from the group consisting of burnt dolomite, dolomite hydrate, semi-burnt dolomite and combinations thereof in quantities of between 3 and 20% by weight, relative to the total mixture, to said raw dolomite powder and wherein said foreign oxides are added in such quantities such that the total content of foreign oxides is 1 to 3% by weight calculated on the ignition loss free mixture.