Professional Group

Dolomite powder is a fine, white to off-white powder produced by crushing, grinding, and sieving the natural mineral dolomite, a calcium magnesium carbonate with the chemical formula CaMg(CO₃)₂. This mineral is distinct from pure calcium carbonate (limestone) due to its significant magnesium content, typically around 20%. The powder's properties are defined by this dual composition, offering a source of both calcium and magnesium oxides. It is valued for its relative softness (around 3.5-4 on the Mohs scale), whiteness, chemical neutrality, and thermal behavior. When calcined (heated to high temperatures), dolomite decomposes to a mixture of calcium oxide and magnesium oxide, known as dolomitic lime or dead-burned dolomite, which has important refractory properties.

The applications of dolomite powder are diverse across industrial and agricultural sectors. In its raw form, it is used extensively as a functional filler in plastics, paints, rubber, and sealants to improve properties like stiffness and weather resistance.…