Recovery of molybdenum from residues by simultaneous ultrafine milling and alkali leaching

来源期刊：中南大学学报(英文版)2002年第2期

论文作者：杨华明 胡岳华 邱冠周

文章页码：87 - 90

Key words：molybdenum residue; ultrafine milling; alkali leaching; mechanochemical effect; kinetic behavior

Abstract: A new technology of treating molybdenum residues by simultaneous ultrafine milling and alkali leaching was put forward to recover molybdenum from metallurgical residues. The effects of residue size, milling time, solid content ,n(Na₂CO₃)/n(Mo) and slurry pHvalue on molybdenum leaching rate were investigated. The results indicate that a simpler process, lower slurry temperature, 50% shorter treating time, 60% decrease of Na₂CO₃content and 15% increase of molybdenum leaching rate can be obtained by the new technology compared with the traditional process. The leaching kinetic equation was determined, and calculation of active energy (E=56.2 kJ/mol) shows that the leaching process of molybdenum residues by simultaneous ultrafine milling and alkali leaching is controlled by chemical reaction. Potential exists for the new process to formthe basis for an economically viable, environmentally friendly process to recover valuable elements from residues.