This is 7.65 per cent higher as compared to 6.340 MT bauxite produced in 2015-16, the company said in a report.
The company's aluminium output grew 4 per cent to 0.387 MT in last fiscal from 0.372 MT in the previous fiscal, it said.
Bauxite is an important ore of aluminium, a metal widely used by automobile industry for making aircraft, among other uses.
"Bauxite mines have achieved highest ever production with bauxite transportation of 68.25 lakh tonne achieving 100 per cent capacity utilisation and has surpassed previous best of 63.40 lakh tonne achieved in 2015-16, registering a growth of 7.65 per cent," the report said.
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Nalco's captive power plant (CPP) achieved net power generation of 6,066 million unit (MU) in 2016-17, up 3.85 per cent from 5,841 MU in 2015-16.
Its profit after tax (PAT) during last fiscal stood at Rs 669 crore as compared to Rs 787 crore in the previous fiscal.
Total income was at Rs 8,458 crore as against Rs 7,874 crore.
The company's total expenses were at Rs 7,453 crore as against Rs 6,739 crore in 2015-16.
It is one of the largest integrated bauxite-alumina- aluminium-power complex in the country.