已改_also4除去钒浸出液中硅的试验研究11(1) VIP专享VIP免费

学号：1424340108本科毕业论文AlSO4除去钒浸出液中硅的试验研究StudyofusingAlSO4toDislodgesiliconfromVanadiumLeachingSolution姓名：姜凯鑫专业：冶金工程指导教师姓名：成宝海指导教师职称：讲师2018年5月摘要研究了从含钒浸出液中分离硅的有效方法，考察了沉淀剂种类、沉淀剂用量，浸出液pH值、反应时间、沉淀温度和静置时间对除硅和钒损失的影响。结果表明，在弱碱性条件下，铝盐对含钒液除硅有良好的效果，除硅率达到99.12%，钒损失率小于1.21%。该工艺过程简单，钒硅分离效果好。关键词：含钒浸出液镁盐除硅AbstractTheeffectivemethodofseparatingsiliconfromvanadiumcontainingleachingsolutionwasstudied.Theeffectsofthetypeofprecipitant,theamountofprecipitant,thepHvalueoftheleachingsolution,thereactiontime,theprecipitationtemperatureandthestatictimeonthelossofsiliconandvanadiumwereinvestigated.Theresultsshowthatundertheconditionofweakalkali,aluminumsalthasgoodeffectonremovingsiliconfromvanadiumcontainingliquid,andthelossrateofvanadiumislessthan1.21%except99.12%ofsilicon.Theprocessissimple,andtheseparationeffectofvanadiumandsiliconisgood.Keywords:VanadiumcontainingleachingsolutionMagnesiumsaltDesilication目录摘要....................................................................IAbstract.................................................................II第一章绪论.............................................................11.1引言................................................................11.2金属钒简介..........................................................11.2.1金属钒的历史与资源分布..........................................11.2.2金属钒的物化性质................................................21.2.3金属钒的反应及其化合物..........................................31.2.4金属钒的应用领域................................................31.2.5金属钒的的危害与防护............................................41.2钒浸出液除硅的研究内容..............................................51.3国内钒产业的发展建议................................................51.4研究背景............................................................51.5实验意义............................................................6第二章实验方法...........................................................92.1实验仪器及用品......................................................92.1.1原料............................................................92.1.2试剂及仪器设备..................................................92.2实验方法............................................................9钒液中硅的测定........................................................92.2.2浸取液中钒的测定...............................................102.2.3浸出液的除硅处理...............................................12第三章结果讨论..........................................................133.1沉淀剂对除硅率和钒损失率的影响.....................................133.2pH值对浸出率和钒损失率的影响......................................133.3铝盐用量对钒损失率的影响...........................................143.4反应时间对除硅的影响：.............................................153.5温度对钒损失率的影响...............................................153.6静置时间对钒损失率的影响...........................................16第四章结论............................................................17致谢...................................................................18参考文献..................