Hindalco is one of the leading sulphuric acid manufacturers in India. The company has three sulphuric acid plants totalling a capacity of 16,70,000 tpa. The plants incorporate the DCDA process and are designed by Monsanto Envirochem (USA).
Besides sulphuric acid, Hindalco is also a manufacturer of phosphoric acid in India. The phosphoric acid plant is based on the Prayon Mark IV dihydrate technology, which is provided by SNC Lavalin (Belgium). The plant, designed to treat 285,000 tonnes of sulphuric acid and 300,000 tonnes of rock phosphates, produces 180,000 tonnes of merchant-grade phosphoric acid (52 to 54 per cent) per year.
Besides acids, Hindalco is also a fertiliser manufacturer, with products such as di-ammonium phosphate (DAP) and nitrogen phosphorus potassium (NPK) complexes.