硒分离提取技术及其研究现状

364200812RareMetalsandCementedCarbidesVol.36.4Dec.2008,(,650093):,:;;;:TF843.5:A:100420536(2008)0420046203SeleniumSeparationandExtractionProcessesandtheirLatestDevelopmentPENGTian2zhao,ZHANGXu(SchoolofMaterialandMetallurgicalEngineering,KunmingUniversityofScienceandTechnology,Kunming650093,China)Abstract:Descriptionismadeofsometraditionaltechniquesofseleniumseparationandextractionfromcop2peranodeslime,seleniferousacidmudandseleniferousscrap.Andthenewseleniumextractionprocessessuchasoxidation,leaching,extractionanddistillationaresummarized.Keywords:selenium;separation;extraction;thelatestdevelopment1,,,,,(Cu2Se)[(CuAg)2Se][(Ag2Pb)Se][Hg(SeS)],,,,,[1]22.1,,,,:2.1.1,50%140,[2,3]250:Cu2Se+6H2SO42CuSO4+SeO2+4SO2+6H2O700750,(SeO2315),SeO2,SeO2,:H2SeO3+2SO2+H2OSe+2H2SO4,98%:2008203220;:2008204222:(19832),,,4,:99%,3%10%,Cu2Se,SO2,,93%,,2.1.225%50%Na2CO3,450(90%,)[4],80,Na2SeO3Na2SeO4Na2TeO3,TeO2,SO2Na2SeO4SO2,,FeSO4()():,;;,SO2FeSO4,,,625,,809090%,:Na2SeO3+3C=Na2Se+3CONa2Se+H2O+1/2O2=Se+2NaOHCO2,,Na2CO395%,,,2.2,,,,,,10%12%,[5]:Se+O2=SeO2SeO2+H2O=H2SeO3H2SeO3SO2(,70),[5]:H2SeO3+2SO2+H2O=Se+2H2SO42.3,,,,[6]33.1H2O2[7]H2SO4(),H2O2,H2SO4NaClNaOHpH,,,HClNa2SO399%98%3.2[8],6:();(0.1mol/LKH2PO4);(0.1mol/LNa4P2O7);(4.0mol/LHCl);(KClO3+HCl);7436(HF+HNO3+HClO4)()3.3[9],,Cu2+Ni2+Co2+3.4[10]N,N2(12)(N503),,(250.5),O/A11,Se():20%N50326%2,3.04mol/L,40s,,99.998%3.5[11]50%(),,,,4,,,,,,,,:[1].[M].:,1976.62273.[2].[M].:,1992.2692278.[3].[M].:,1978.902102.[4].(,)[M].:,1998.294.[5],.()[M].:,1955.6222626.[6].(,17)[M].:,1998.1092124.[7],.[J].,1997,21(4):2542256.[8],.[J].,1997,16(4):2552261.[9],.[J].,1998,22(2):88298.[10],.[J].,1995,19(3):1872189.[11].[D].:,2004.2009,,,,(1648),10/,60(),2009,,:21:132002:043222707586:043222711665:[e-mail]::84