Press Esc to close
Tuesday 28 June 2016
News updated at 4:51 PM IST
Weather
Max: 27.2°C
Min : 20.8°C
In Bengaluru
Rain lightly

New method to recover low-grade uranium from Tummalapalle ore

Last updated: 01 April, 2011
Mumbai, Apr 1 (PTI)

The Bhabha Atomic Research Centre has developed an innovative techno-economically viable process for the recovery of low-grade Uranium (less than 0.2 per cent) from the Tummalapalle ore in Andhra Pradesh.

"The objective of making a techno-economically viable process flowsheet is to reduce the number of stages of unit operations and conservations leachants by regeneration and recycle leading to minimisation of fresh water inventory as well as quantum of liquid effluent discharge for the most challenging low-grade Uranium ore," Dr A K Suri, Director, Materials Group, BARC said.

The process technology developed by BARC is being translated for industrial adoption by the Uranium Corporation of India Limited (UCIL) and the mine and the mill are in advanced stages of completion at Tummalapalle, Suri said in the latest issue of the BARC newsletter.

Natural uranium (which constitutes approximately 99.3 per cent of Uranium-238 and 0.7 per cnet Uranium -235) is the basic raw material for nuclear material in Indian Pressurised Heavy Water Reactors (PHWRs). The energy in the reactor is derived from the 'fission' of U-235, the only 'fissile' isotope in nature.

Suri said a good understanding of the nature of mineralisation of Uranium values in the ore, Uranium process chemistry and different unit operations, has led to the development of well integrated specially engineered alkaline leaching process flowsheet to treat the low grade uranium deposit in the alkaline host rock in Tummalapalle.

"Also the inevitable chemical species like sodium sulphate and calcium carbonate, in the process were converted into useful by-products by carefully tailored sequence of chemical steps," he explained adding that "many challenges inherent in the ore characteristics were converted into opportunities such that a vast resource could be put to use for country’s nuclear power programme at a competitive cost."

Suri said the existing uranium processing mills at Jaduguda and Turamdih in Jharkhand use conventional sulphuric acid leaching technology for the production of yellow cake or magnesium diuranate. Hence the switch over to alkaline leaching technology on commercial scale for Tummalapalle ore would be a first time venture.

The commercial processing plant which is coming up in Tummalapalle is with a slated capacity to treat 3000 tonne of ore per day using state-of-the-art alkaline pressure leach process technology, Suri said. Earlier, a technology demonstration pilot plant for alkaline process was set up at UCIL complex in Jaduguda jointly by BARC, Atomic Minerals Division, UCIL and Nuclear Power Corporation of India, he added.


Go to Top

Photo Gallery
People carry an effigy representing inflation devil on a camel-cart during a demonstration...

People carry an effigy representing inflation devil on a camel-cart during a demonstration...

A car wades through a water logged lane at Jayadev Bihar after heavy monsoon rains in Bhubaneswar...

A car wades through a water logged lane at Jayadev Bihar after heavy monsoon rains in Bhubaneswar...

A sadhu at a base camp for Amarnath Yatra ahead of their registration in Jammu...

A sadhu at a base camp for Amarnath Yatra ahead of their registration in Jammu...

The titular head of Wodeyar dynasty Yaduveer Krishnadatta Chamaraja Wodeyar and Trishika Kumari...

The titular head of Wodeyar dynasty Yaduveer Krishnadatta Chamaraja Wodeyar and Trishika Kumari...

A white tiger takes bath in a pond during a hot summer day at its enclosure in Kolkata Zoo...

A white tiger takes bath in a pond during a hot summer day at its enclosure in Kolkata Zoo...

An artiste gives finishing touches to an idol of Goddess Durga for upcoming Durga Puja...

An artiste gives finishing touches to an idol of Goddess Durga for upcoming Durga Puja...

Collapsed tents at BJP Awadh Kshetriya Booth Sammelan following the storm, in Barabanki...

Collapsed tents at BJP Awadh Kshetriya Booth Sammelan following the storm, in Barabanki...

Women Kabaddi players who will take part in the Women's Kabaddi Challenge, at a press conference...

Women Kabaddi players who will take part in the Women's Kabaddi Challenge, at a press conference...

People enjoy the rainy weather on a beach along the Arabian Sea in Mumbai...

People enjoy the rainy weather on a beach along the Arabian Sea in Mumbai...

The underconstruction Bogibeel Bridge over the mighty Brahmaputra River in Dibrugarh district....

The underconstruction Bogibeel Bridge over the mighty Brahmaputra River in Dibrugarh district....

Copyright 2014, The Printers (Mysore) Private Ltd., 75, M.G Road, Post Box 5331, Bengaluru - 560001
Tel: +91 (80) 25880000 Fax No. +91 (80) 25880523