4、ingtime. The lightweightporousmaterialswereusedasbiomediuminbiologicalaeratedfilterandeffectofwatertreatmentwasevaluated. Theresultsshowthat : lightweightporousmineralmaterialscanbesuccessfullypreparedbysintering temperature at550℃, holding 15minutes, then at 1130℃ holding 30minutes,which theratioof
5、 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 0.67%.TheBAFreactorwiththelightweightporousmaterialsservin
6、gasthebiomediumachievedhighremovalefficienciesfor 85%of COD. The lightweightporous materialhasgood wastewatertreatment effect.Keywords:IrontailingsMineralPorousmaterialsApparentdensityWatertreatment目录1绪论51.1引言61.2铁尾矿综合利用61.2.1生产建筑材料61.2.2贵金属的回收71.2.3工业水处理71.3矿物多孔材料研究进展71.3.1矿物多孔材料71.3.2矿物多孔材料的制备方法81