India's state-run National Aluminium Company (Nalco) has issued a tender to sell 30,000 tonnes of alumina, traders said on Tuesday.
The tender, issued last week, will close on August 24 and the company will ship the commodity in the second half of September, they said.
Alumina, extracted from bauxite ore, is smelted to produce aluminium. Nearly two tonnes of alumina are needed to produce a single tonne of the metal.
Nalco, Asia's largest alumina producer, sold 30,000 tonnes of alumina in June to a Russian company at around $350 a tonne FOB (free on board). In May, it sold another 30,000 tonnes to Iran Aluminium Company at $462.50 a tonne.
The company, India's second-largest aluminium maker, mainly sells its surplus alumina through long-term contracts, but sometimes taps the world spot market to sell surplus output.