Abstract: In order to maximize the recovery of spent Mo-based catalyst,solve the disposal problem of spent catalyst and reduce the mining of mineral resources,Na2CO3 roasting-water leaching method is used to recover spent Mo catalyst.Spent Mo-based catalyst samples are measured by electronic dispersive spectrometer,inductively coupled plasma atomic emission spectrometer,flame atomic absorption spectroscopy and X-ray diffractometer.Three operating parameters such as roasting temperature,Na2CO3 amount and roasting time are optimized in Na2CO3 roasting process while water leaching parameters remain unchanged,and XRD patterns are analyzed at different operating conditions.The optimized conditions are obtained as follows:the roasting temperature maintains at 700℃,the dosage of Na2CO3 is 2 g and the roasting time is 80 min.Under these optimum conditions,Mo recovery rate reaches 90.79%.
何如意, 栗达, 杨昆鹏, 杨忠凯, 李涛, 任保增. 煤焦油加氢废钼催化剂中回收钼的实验研究[J]. 现代化工, 2020, 40(11): 139-143.
HE Ru-yi, LI Da, YANG Kun-peng, YANG Zhong-kai, LI Tao, REN Bao-zeng. Experimental study on recovery of Mo from spent molybdenum-based catalyst for hydrogenation of coal tar. Modern Chemical Industry, 2020, 40(11): 139-143.
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