2013•Rare Metals and Cemented CarbidesRequires access
Experimental Study on Molybdenum Leaching with NaOH from Refractory Molybdenum Concentrate
Jun Peng
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Abstract
Experimental study was conducted on molybdenum leaching with NaOH from molybdenum concentrate.The effects were investigated of leaching temperature and time,particle size of molybdenum concentrate,stirring speed and the coefficient β(i.e.the mass ratio of NaOH to molybdenum concentrate),and liquid to solid ratio on molybdenum leaching rate.The optimal technical parameters of molybdenum leaching were also determined.The average molybdenum leaching rate is 99.76% from the molybdenum concentrate with particle size of less than 0.1 mm,under the conditions of leaching for 90 min at 85 ℃,stirring speed of 450 r/min,β value of 1.2,and liquid to solid ratio of 4∶1.Study on the above leaching process provides reliable technical parameters for processing of refractory molybdenum concentrate.