Loading…
Major Indian industrial groups — Adani Enterprises, Reliance Industries, Vedanta Aluminium, Hindalco Industries, Powercem and state-run Coal India — are competing for the greenfield Karlapat-Pollingpadar bauxite block in Odisha's Kalahandi district.
The Odisha government floated the mining tender in May 2026; the block holds an estimated 207-220 million tonnes of bauxite, one of India's largest unallotted deposits.
The ore carries a high alumina content of about 45-47% with low reactive silica, allowing efficient low-temperature Bayer-process extraction, and lies adjacent to the Karlapat Wildlife Sanctuary elephant corridor.
Odisha holds about 2,057 million tonnes of India's bauxite resources — 41% of the national total — reinforcing its position as the country's leading bauxite-aluminium hub.
The Bayer process refines bauxite ore into alumina (aluminium oxide) by dissolving it in hot caustic soda. Ore with high alumina content and low reactive silica — like Karlapat's — needs less caustic soda and lower temperatures, cutting processing costs and energy use compared with lower-grade ore.
Simple Analogy: It works like brewing concentrated coffee from strong beans — high-grade ore (strong beans) needs less effort and fewer inputs to extract the same amount of the valuable product.
GS Paper I/III > Indian Geography, Mineral Resources and Industries
General Awareness > Economy and Resources
A mineral deposit that has not previously been commercially mined
The industrial method of refining bauxite ore into alumina using caustic soda