從氧化鋅礦中制備納米氧化鋅新工藝研究.pdf

1、昆明理工大學(xué)碩士學(xué)位論文從氧化鋅礦中制備納米氧化鋅新工藝研究姓名：許多豐申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：冶金工程指導(dǎo)教師：彭金輝何國才20050425比明理l。人學(xué)I櫸碩十學(xué)位論文摘要ABSTRACTAnoveltechnologyofpreparationfornanometersizedzincoxidefromzincoxideorehasbeeninvestigatedanddevelopedinthispaperThewhollyte

2、chnologicalprocessofpreparationfornanometersizedzincoxidefromzinc—oxideorehasbeencompletedsystematicallyPilotexperimentsofremovalwaterofbasiczinccarbonateandcacilnationundermicrowaveirradiationheatinghavebeencarriedoutSo

3、memainresultsoftestingresearchwereasfollows：iExperimentsforleachingofzincoxideorewithsulfuricacidwereconductedsystematically，Theeffectsontheleachingrateofzincwereanalyzed，theoptimumconditionsdeterminedofleachingofzinc—ox

4、ideorewereasfollows：liquidsolidratio5：1，stirringratio200f／rain，particlesize120160mesh，thetimeofleaching4Ohtheconcentrationofsulfuricacid25％Therateofleachingzincisabove92O％underaboveleachingconditionsiiResearchontheiron—r

5、emovalinzincsulfateleachingsolutionwiththegoethiteprocessandOXidation—hydrolysisprocesswasperformedTheefleetsontheiron—removalrateofzincsulfatesolutionwasanalyzedanddiscussedindetailTheoptimumconditionsofiron—removalwere

6、obtainedasfollows：thetimeofreaction15h，temperatureofreaction9092℃，pH5254，thequantityofhydrogensuperoxideabovethequantityoftheorycounting18timesandadditivetimeofhydrogensnperoxide45minUndertheseconditions，theiron—removalr

7、ateofzincsulfateleachingsolutionreachesbettereffectMoreover，theoptimumpurificationconditions0fleadrIcrnovalcadmium—removalandcobaltremovalwcrcobtainedasfollows：reactiontemperature7080“CpH52～54reactiontimel—l511thequantit

8、yofzincpoweraboxcthequantityoftheorycounting28timesiii’reparationmlprecursorofnanometer—sizedbasiczinccarbonateunderthecondition0rultrasonicirradiationwasintroduced，andamechanism(711preparationforprecursorofnanometer—siz