Alternative Materials
UltraTech is on a constant lookout for techniques to replace natural limestone. We use waste materials like fly ash, gypsum, slag, red mud in lieu of naturally occurring limestone. We have used more than 28 Million Tonnes of recycled material for making cement. The quantity of recycled material used has increased significantly over the past few years. Recently, our R&D teams patented the process of making cement from aluminium industry waste. We have entered into a Memorandum of Understanding (MoU) with our Group company, Hindalco Industries Ltd., a global leader in aluminium and copper, where Hindalco will deliver 1.2 million metric tonnes of red mud (also known as bauxite residue) annually to UltraTech's plants. Red mud generated in the alumina manufacturing process is rich in iron oxides, along with alumina, silica and alkali. Our R&D team has developed the capability to process red mud as a replacement for mined minerals such as laterite and lithomarge in its process.