选矿捕收剂对铝酸钠溶液晶种分解的影响

《选矿捕收剂对铝酸钠溶液晶种分解的影响》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、东北大学硕士学位论文选矿捕收剂对铝酸钠溶液晶种分解的影响姓名：李博申请学位级别：硕士专业：有色金属冶金指导教师：毕诗文;于海燕20060201东北大学硕士学位论文摘要无捕收剂Ps及有捕收剂PS存在下的附聚动力学方程和表观活化能分别为：无捕收剂PS时dC／dt=18．63xexp(-29．21×103／RT)×(C．Coo)2，Ea=29．21kJ／mol捕收剂PS含量为40mg／L时dC／dt=1．80xexp(一22．43×103／RT)×(c-Coo)2，Ea=22．43kJ／tool捕收剂PS含量为120mg／L时dC／dt=130．77xexp(-40

2、．52×103／RT)×rc—Coo)2，Ea=40．52kJ／tool无捕收剂PS及捕收剂PS含量为40mg／L时，附聚反应由混合反应控制：捕收剂Ps含量为120mg／L时，附聚反应由表面反应来控制。关键词：选矿—拜耳法；捕收剂；铝酸钠溶液；晶种分解：附聚动力学方程III东北大学硕士学位论文AbstractTheEffectofFloatingCollectoronPrecipitationofSodiumAluminateSolutionAbstractMostofChinesebauxiteisdiasporebauxite，theratioofalum

3、inumtosiliconislesssevenineightypercent．ItdonotapplytoBayerprocess，butadoptingthesinteringprocessortheconsociationprocessishighenergy—consuming．Thus，itisnecessarytointensifytousingmiddling-lowgradeofbauxiteinordertoremainourcountrycontinuing—developmentability．AdoptingBayer-mineralp

4、rocessingmethodcaildealwithmiddling—lowgradebauxiteeconomically．Bayer-mineralprocessingmethodisamethodtoaddmineraltechniquestoBayerprocess．Inthecourseofmillrun，inorderto，changeexteriorphysicalchemistryqualityofmineral，increaseordecreasefloatationabilityofmineral，manyfloatationmedica

5、mentswereused，mostoffloatationmedicamentarefloatingcollect01．researchingfoundthatsomefloatingcollectorCanenternextprocessfollowingextractivemine，whethertheyhaveeffectonsodiumaluminatesolutionseeddecompositionbecomeafocusproblemwhichhasbeenpaidattentiontobytheexpelsofaluminaindustry．

6、Inthepaper，westudyeffectofthelong—hydricarbonchainfattyacidcollector(PS)onphysicalpropertiesofsodiumaluminatesolution(ak21．55，CAO=160．09几)，seedprecipitation，qualityofproduct，andaggregatekineticequationofsodiumaluminatesolution．Formthestudy，wefindthat：thecontentofPSislessthan40megL，v

7、iscosityandinterracialtensionofsodiumaluminatesolutiondecreasesrapidlywiththecontentincreasingofPS,thecontentofPSismorethan40mg／L，viscosityincreases，interracialtensionkeepinvariability；electricconductivityincreaseswiththecontentincreasingofPS．ThecontentofPSislessthan40mg／L，theprecip

8、itationratioincreas