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Na_2CO_3/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%N_(235)-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 call be achieved under the conditions of he molar ratio(Na_2CO_3/Mo)1.3,leaching temperature 150℃.Solvent extraction was adopted to recover molybdenum by N235 from leaching solution.The system of 20%N_(235)-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 ammonium molybdate.This process has the advantages of high metal recovery,simple flowsheet,environmentally friendly.
出处
《资源再生》
2007年第1期29-32,共4页
Resource Recycling
关键词
钴钼废催化剂
加压浸出
萃取
钼酸铵
spent Mo-Co catalyst
pressure leaching
extraction
ammonium molybdate
