VIJAYA CEMENT PVT. LTD.
Kathmandu office Soaltee Mode, Ktm
Head Office Krishnanagar
Tel 76-520026, 520426, 520233, 520326
PRODUCTS Vijaya Super Cement, Power Cement Portland Pozzolana Cement (PPC), Master Builders Ordinary Portland Cement (OPC), Super Cement Portland Pozzolana Cement (PPC), Sun Cement Portland Pozzolana Cement (PPC), Gold Cement Portland Pozzolana Cement
Cement is typically made from limestone and clay or shale. These raw materials are extracted from the quarry crushed to a very fine powder and then blended in the correct proportions. This blended raw material is called the ‘raw feed’ or ‘kiln feed’ and is heated in a rotary kiln where it reaches a temperature of about 1400 C to 1500 C. The raw feed enters the kiln at the cool end and gradually passes down to the hot end, then falls out of the kiln and cools down. The material formed in the kiln is described as ‘clinker’ and is typically composed of rounded nodules between 1mm and 25mm across. After cooling, the clinker may be stored temporarily in a clinker store, or it may pass directly to the cement mill. The cement mill grinds the clinker to a fine powder. A small amount of gypsum – a form of calcium sulfate – is normally ground up with the clinker. The gypsum controls the setting properties of the cement when water is added. The mixture is then very finely ground to obtain “pure cement.”