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2275581 
Journal Article 
DEPHOSPHORIZATION OF YUNNAN REFRACTORY HIGH-PHOSPHORUS LOW-MANGANESE ORE BY SHAKING TABLE AND HYDROMETALLURGICAL PROCESSING 
Lai, G; Zhang, Z; Peng, J; Chu, L; Wang, S 
2012 
769-775 
WOS:000327405100072 
The beneficiation of poor manganese ores containing phosphate gangue is very difficult by conventional processes, because of the similarities in the physico-chemical properties of the constituent minerals. The shaking table gravity concentration process and concentrated strong acid selective intensified leaching process were used for dephosphorisation of Yunnan manganese ore. The leaching process was effective. The effects of intensified leaching time, solid-liquid ratio and particle size were investigated. The relevant leaching factors were optimized as -0.125+0.088 mm particle size with 68% nitric acid for 24 h when using a solid-liquid ratio of 1:1 at room temperature and atmospheric pressure. Under these conditions, the P/Mn ratio was reduced from 0.0107 to 0.0056, and the grade of manganese was increased from 12.32% to 42.76%. The dissolution of manganese during leaching was negligible. 
Manganese Ore; Dephosphorization; Selective Intensified Leaching; P/Mn Ratio