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1、废镍氢电池中镍、钴和稀土金属回收工艺研究34??j??71?(Vol134j?No11??j??Hj???j???CHINESEJOURNALOFRAREMETALS2010??1?CJan12010j??r?w???(:2009-04-10;???????(:2009-05-15j??????????????3???????/???L???????1???,?v???????C?h?8???[???2(6)j????o?????cj???(),??,??????????,?????M???(;?M?????A???1???[???23(f@63)?????,?v???d??j
2、3???????(???????r?????M???cj???,?6?m??3(?????????2???.???????O?(?????E????,????????113001)????:???????????V?l???????????,?v???d??j3??j3???((RE)?????????r,?1????????????j3??????j3?????;?????????????h???P???6????j3??j3???(????????????;????pHj3???c???????O???????dRE3+?????M??j3?????h???P???6???
3、??(???r????????j4?:??????????????????j3??j3???(?8???????d???a?2???????????????(???(?J?????????a?2????????j4???????????O,?a?2?????????????B:?????????B3.8h,???????B15,?????;???????B1.8mol??L-1,?????h??80)1j4?8?a?2?????????E,????????????96.8%,????????????97.3%,???(??????????94.6%j4???(?J?????a?
4、2?????????B:????pH?B2.0,???c???????O???????dRE3+?????M???B4,?????h???B60)1j4?8???????E,RE???r???B96.7%j4???i??:???,?v??;??;??;???(doi:10.3969/j.issn.0258-7076.2010.01.016?d???l????:TG139j?j????i?N???3:Aj?j??????2??:0258-7076(2010)01-0079-06RecoveryofNi,Co,RareEarthfromWasteMH2NiBatteryWuWei,
5、ZhangHonglin3(CollegeofEnvironmentandBioengineering,LiaoningShihuaUniversity,Fushun113001,China)Abstract:TherecoveryofNi,Co,REfromMH2Nibatterywithwettreatmentwasintroduced,theimpactofleachingtime,liquid2solidratio,sulfuricacidinitialconcentrationandleachingtemperatureontheleachingrateofNi,Co
6、,REandtheimpactofsolutionpH,themolarratioofNa2SO4andleachingsolutionwithRE3+,reactiontemperatureandotherfactorsontherecoveryrateofREwerestudied.Bytheorthogonaltest,theoptimizedsulfuricacidleachingconditionsforNi,Co,REandtheoptimizedprecipitationcondi2tionsforrareearthdoublesaltwereidentified
7、.Theresultsshowedthattheoptimizedsulfuricacidleachingconditionswereleachingtimeof3.8h,liquid2solidratioof15,initialconcentrationofsulfuricacidof1.8mol??L-1,andleachingtemperatureof80)1.TheleachingrateofNi,CoandREwas96.8%,97.3%and94.6%respectively.T