资源描述：
《氯碱盐泥综合回收工艺技术研究》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、西安建筑科技大学硕士学位论文Formagnesiumprecipitationandmodificationprocessparameters:15%surfactantA（SDBS：PEG2000=2:1）dosagewas10mL,ultrasonic(40KHz)dispersiontime2+-was2min,NaOHdosagewas1:1calculatedbyMg:OH,reactiontemperaturewas30℃,precipitationtimewas2h,therecoveryrateofMgwas66.46%,thepuri
2、tyofMg(OH)2was96.49%,coatedratiowas3.26%，theminimumparticlesizewas0.2um.Forcalciumprecipitationandmodificationprocessparameters:onconditionofultrasonic(40KHz)dispersion,3%polyacrylatesodiumdosagewas5mL,thevelocityofkilngasaccessintosolutionwas100L/h,reactiontemperaturewas50℃,rea
3、ctionpHwas11,reactiontimewas1h,Carecoveryratewas90.31%,theproductCaCO3puritywas90.46%,coatedratiowas1.60%,theminimumparticlesizeofCaCO3was0.15umandcoatingmodificationeffectwasgood.Inthefinalexperimentthattheacidleachingresiduewascarriedoutaexperimentofalkalileachingdesilicationt
4、orecycleBaSO4withSiO2concentrationasthemainindex,investigatedthereactiontime,temperature,acidity,liquid-solidratioimpactofdesilication,respectively.Reachthebestdesilicationprocessparametersasfollows，theNaOHconcentrationis50%,liquidsolidratiowas2.5,dissolutiontemperaturewas120℃,a
5、gitationleachingtimewas5h,andthepurityofthefinalproductBaSO4was85.32%,BaSO4straightyieldwas87%.Thecomprehensiverecyclingandutilizationofthesaltslurrytestingscheme,whichcanrealizerecyclingBaSO4,thepreparationofmodifiedCaCO3,modifiedMg(OH)2andMgOfromsaltslurry.Afterpurification,th
6、eCaandMgrichfluidusefractionalstepmethodtoseparateCaandMg,realizedtheseparationofCaandMg,andatthesametime,realizedsurfacemodificationofMg(OH)2andCaCO3。SimulationwiththegasofcarbonatecalciningkilnandacidleachingrecoveryofCO2ofRareEarthCompany,asprecipitantofCaions,preliminaryreal
7、izedrecyclingofcarbonresource.Theresultsoftheresearchhaveimportanttheoreticalguidancesignificanceandapplicationvalueforimprovingthelevelofenvironmentalprotectionandcirculareconomy.Keywords：Saltslurry;Acidleaching;edulcoration;Desilication;Ultrafinepowder;万方数据西安建筑科技大学硕士学位论文目录1.前言
8、...............................................
