Calcined Dolomite

Dolomite is a mineral with the chemical formula CaMg(CO₃)₂, exhibiting perfect cleavage in three directions. It's commonly found in creamy-gray and grayish-white, but can also be white, yellow, green, or black. Rocks containing dolomite are called dolomite or dolomitic limestone. Carbonate minerals include calcite, aragonite, and dolomite.

Calcination is a process in materials science and chemistry involving heating a material to induce pyrolysis, remove moisture, form intermediate compounds, or carry out solid-state reactions. Simply put, it's the removal of carbon dioxide from a carbonate rock. In the case of dolomite, heating in a furnace at a specific temperature removes impurities. Calcined dolomite, resulting from high-temperature heating of dolomite rock, is primarily composed of magnesium oxide (MgO) and calcium oxide (CaO).

Calcined dolomite begins to calcine around 600°C and is fully decomposed into MgO and CaO, with complete CO₂ removal, at approximately 900°C. This fully calcined product is also known as "Doloma." It plays a significant role in the steel industry as a slag conditioner and a protective agent for refractory linings. It also finds applications in agriculture as a soil conditioner and in water treatment for environmental purposes.

analysis :

Chemical  analysis  Calcined  Dolomite  table

Attachments:

calcined-dolomite.pdf