Process of cement making
Process of cement making What is cement? It is a hydraulic binder that sets under water and in open air once mixed with water or it is an adhesive material which is capable of binding fragments into compact or it is a greenish-gray powder made of lime (Calcium hydroxide) and alumina. Cement is also referred to as Portland cement because concrete that it is made from calcinations of orgillaceous rocks resembled in color and quality the famous building stone obtained from the Isle of Portland near England. Raw materials needed for cement making must be rich in : calcium-source limestone, silicates-source orgillaceous rocks, clays (Kunkur), gypsum (calcium sulphate) and iron ore. There are two methods of cement making: v Wet process- which is costly to run and it is rarely used. v Dry process-this is less costly and is what is employed in modern cement factories. How it is done (process) Raw materia...