To produce Portland cement, limestone is mixed with raw materials such as siliceous stone and clay and is heated to about 1,450 °C. During this process, an intermediate product called ‘clinker ...

PRELIMINARY research findings in the Nyerere National Park and the Selous Game Reserve show the existence of various minerals ...

India’s cement industry is bracing for higher costs after Tamil Nadu imposed a ₹160 per tonne mineral tax on limestone, a key raw material. The levy comes at a precarious time—cement makers ...