What is Pyroprocessing?

Pyroprocessing is a high-temperature industrial process used to bring about physical or chemical changes in solid materials. It is a dry and highly energy-intensive process.

• The technology is widely used in three major sectors: cement manufacturing, metallurgy, and nuclear power, with the cement industry accounting for the largest share of its use.
• In cement production, finely ground limestone, clay, and iron ore are fed into a rotary kiln.
• At temperatures around 900°C, limestone undergoes calcination and releases carbon dioxide (CO₂).
• As the temperature rises to about 1,450°C, the mixture partially melts and forms marble-sized nodules known as clinker.
• The clinker is subsequently ground into a fine powder to produce cement.
• Since pyroprocessing requires very high temperatures and releases significant CO₂, it is a major focus of efforts to decarbonize energy-intensive industries.

Source: TH