Abstract SYMPHOS 2011
Abstract SYMPHOS 2011
Abstract SYMPHOS 2011
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40<br />
BENEFICIATION OF INDIAN LOW GRADE ROCK PHOSPHATES<br />
A FEW CASE STUDIES<br />
BN-O-01<br />
Arun Kumar Majumder,<br />
Department of Mining Engineering Indian Institute of Technology, Kharagpur<br />
721302, INDIA<br />
Jayanta Bhattacharya,<br />
Department of Mining Engineering Indian Institute of Technology, Kharagpur<br />
721302, INDIA<br />
Kaushik Dey,<br />
Department of Mining Engineering Indian Institute of Technology, Kharagpur721302,<br />
INDIA<br />
India, with its vast agricultural base remains one of the major fertilizer consuming countries in the world. The<br />
domestic requirements of primary nutrients such as nitrogen, phosphorous and potash (NPK) are being mostly<br />
met by imports.<br />
Out of 200 million tonnes of rock phosphate reserves, approximately 15 million tonnes only have been estimated to<br />
be of high grades (> 30% P 2 O 5 ) which are being mined by different government agencies for commercial purposes.<br />
The rock phosphate assaying between 20 to 30% P2O5 is currently being used for different purposes such as<br />
blending with high grade rock phosphates, direct application to soil as fertilizer, partially acidulated phosphate<br />
rock (PAPR) concentrate. The low grade (
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