加压浸出-萃取法从钼钴废催化剂中回收钼  

RECOVERY OF MOLYBDENUM FROM SPENT Mo-Co CATALYST BY PRESSURE LEACHING-EXTRACTION

作　　者：施友富[1] 黄宪法[1] 

机构地区：[1]安徽省冶金科学研究所,安徽合肥230011

出　　处：《中国钼业》2006年第3期21-23,共3页China Molybdenum Industry

摘　　要：采用加压浸出从钼钴废催化剂中分离钼,在原料摩尔比Na2CO3/Mo=1.3,浸出温度150℃的条件下,钼的浸出率达90%。浸出液经酸化处理后采用N235萃取回收,在有机相为20%N235-10%异辛醇-煤油的条件下,经4级萃取钼的萃取率可达到99.6%。反萃液经酸沉回收钼,产品钼酸铵质量较好。本工艺流程简单、有价金属回收率高、对环境友好。The experimental investigation has been conducted to seperate molybdenum from spent Mo - Co catalyst by pressure leaching. The results show that 90% molybdenum extraction can be achieved under the conditions of he molar ratio （Na2CO3/Mo） 1.3, leaching temperature 150℃. Solvent extraction was adopted to recover molybdenum by N235 from leaching solution. The system of 20% N2z5 - 10% 2 - Ethyl hexanol - kerosene is adopted as medium of the solvent extraction. The results suggest that 99.6% molybdenum extraction can be achieved in four stages of extraction. It was characterized to yield high quality of high metal recovery, simple flowsheet , environmentally ammonium molybdate. This process has the advantages friendly.

关 键 词：钴钼废催化剂 加压浸出 萃取 钼酸铵 

分 类 号：TF841.2[冶金工程—有色金属冶金]