Why should the calcination temperature be strictly controlled in the process of calcining dolomite?

Prevent the generation of overfired lime and underfired lime. Fused magnesia calcium sand

The dolomite whose main component is calcium carbonate is calcined at an appropriate temperature, and the decomposed carbon dioxide is excluded, and the obtained product with calcium oxide (CaO) as the main component is lime, also known as quicklime. In actual production, it is To speed up the decomposition, the calcination temperature is often increased to 1000 ~ 1100 ° C. Due to the large size of the limestone raw material or the uneven temperature distribution in the kiln during calcination, lime often contains underfired lime and overfired lime. Fused aluminum chrome sand

Fused aluminum chrome sand

The calcium carbonate in the underfired lime is not completely decomposed and lacks cohesive force when used.