3、,18天后COD去除率高达85%并趋于稳定,具有良好的水处理效果。关键词:铁尾矿矿物多孔材料表观密度水处理38河北工业大学2015届本科毕业论文毕业设计(论文)外文摘要TitleStudyonPreparationandpropertiesoflightweightporousmaterialsofmineralAbstractThe lightweightporousmaterials was preparedwhichused irontailings asthemainmaterial,a
4、ttapulgiteasbinder,carbonpowderaspore-formingagent, calciumcarbonate asfluxingagent. Thebestratioofrawmaterialsandproductionprocesses wereexploredby changingthe content ofbinder,sinteringtemperatureandholdingtime. The lightweightporousmaterialswereus
5、edasbiomediuminbiologicalaeratedfilterandeffectofwatertreatmentwasevaluated. Theresultsshowthat : lightweightporousmineralmaterialscanbesuccessfullypreparedbysintering temperature at550℃, holding 15minutes, then at 1130℃ holding 30minutes,which thera
6、tioof icontailings, palygorskite,toner,andcalciumcarbonate were 5:0.33:1.719:0.4.Theapparentdensity of lightweightporousmaterials was 1.1160g/cm3,crushingforce was 0.802kN,waterabsorptionrate was 4.80%, andthedissolutionratebyhydrochloricacid was 0.6
7、7%.TheBAFreactorwiththelightweightporousmaterialsservingasthebiomediumachievedhighremovalefficienciesfor 85%of COD. The lightweightporous materialhasgood wastewatertreatment effect.Keywords:IrontailingsMineralPorousmaterialsApparentdensityWatertreatm