Question

In the manufacturing of cement, the dry and wet mixture of Calcareous and argillaceous materials are burnt at a temperature of

• A. ${900}^{o}Cto{1000}^{o}C$
• B. ${1000}^{o}Cto{1200}^{o}C$
• C. ${1200}^{o}Cto{1500}^{o}C$
• D. ${1500}^{o}Cto{1600}^{o}C$

Answer 1

The correct option is D ${1500}^{o}Cto{1600}^{o}C$

Calcareous and argillaceous raw materials are used in the manufacture of Portland cement. Cement can be manufactured either by dry process or wet process.
The dry process is adopted when the raw materials are quite hard and are burnt at temperature of about ${1400}^{o}Cto{1500}^{o}C$
The operations in the wet process of cement manufacture are mixing, burning and grinding and is burned at ${1500}^{o}Cto{1600}^{o}C$.