低溫鋁電解質(zhì)密度及熔鹽電解法制取鋁鉺合金的研究.pdf

1、東北大學(xué)碩士學(xué)位論文低溫鋁電解質(zhì)密度及熔鹽電解法制取鋁鉺合金的研究姓名：付靜申請學(xué)位級別：碩士專業(yè)：有色金屬冶金指導(dǎo)教師：涂贛峰王兆文2002.2.1查!!查堂嬰主蘭堡絲查一————竺翌蘭!豎InvestigationsoftheElectrolyteDensityinLowTemperatureAluminumElectrolysisandthePreparationofA1ErAlloysbyMoltensaltElectrolys

2、isAbstractLowtemperatureAluminumelectrolysisisoneprojectofthestate“973”planAtthepresentwork，thedensityofelectrolyteinlowtemperatureAluminumelectrolysisisstudiedBasedonArchimedesprinciple，thedensityoftheNa3AIF6一AIF3A1203一

3、CaF2一MgF2NaCIsystemisstudiedbymassvolumemethodTheexperimentsaredesignedbyquadraticregressionorthogonalanalysisThee腩ctsoftemperature(from850。Cto920。C)，molarratio(from15to20)，andconcentrationofNaCl(from5to15％)onthedensitya

4、restudied，thusaformulaofthedensityisobtained：|。=43548464x10。升1983(CR)202310’B一2882x101ECR_l470710’5TB1628x10～(CR)B410910“6嚴一384110～(CR)22014x10’382andtheequationiscorrectbyFtestWhena銣05Itisconsideredthatthedensityismonot

5、onedecreasingwiththetemperaturerising；andthatthedensityisalsomonotoneincreasingwiththemolarratioincreasing；andthattherelationshipbetweenthedensityandtheconcentrationofNaClisacomplicatedquadraticfunctionWhentheNaCIconcent

6、rationrangeisfrom5％to8292％thedensityismonotoneincreasing；WhentheNal01concentrationrangeisfrom8292％tol5％thedensityismonotonedecreasing；WhentheNaClconcentrationis8292％thedensityreachesthemaximumIntherangeoftheresearch，when

7、therangeofNaCIconcentrationisfrom12％to15％，ortherangeofelectrolytemolarratioisfrom15to185，AIcanbewellseparatedfromtheelectrolyte，anditcanbeusedinthelowtemperatureAluminumelectrolysisTheelectrolyteofhighNaCIconcentration(f

8、rom12％to15％1iscommendedPreparationAluminumErbiumalloysbymoltensaltelectrolysisisstudiedroughlyintheexperimentTheconcentrationofErinthealloyisrelatedtotheconcentrationofEr203，thecurrentdensityofcathodeandtheelectrolytetim