· Clinker is mixed with gypsum and ground into a fine powder, from which cement is made. According to calculations, a large amount of energy from coal is used to produce cement, of which it takes about 200 kg of coal to produce one ton of cement and about 300400 kg of cement to produce one cubic meter of concrete.
· Gypsum is a widely used mineral material that is used as construction material in the form of plaster and alabaster. Gypsum is almost essential for the decoration of any types of building. Processing stages and different methods of baking and production of various types of construction plasters (conversion of gypsum to baked gypsum) take place in the factory.