CAJ | 학술논문

以工业废渣粉煤灰为主要原料,制备密度与水接近（0.80～1.10g/cm3）且耐磨性好的高活性多孔悬浮陶粒。通过非均相凝聚、涂层法对悬浮陶粒表面进行荷正电改性,并对改性陶粒的吸附性能、铁负载量、体积密度、显气孔率、抗压强度、表面形貌、表面电性及改性涂层的物相组成进行了表征。优化的改性条件为：氯化铁浓度为1mol/L,焙烧温度为650℃,焙烧时间为3h。此条件下的改性陶粒对亚甲基蓝的去除率达到86.3%,是未改性陶粒的3～4倍。检测结果表明改性陶粒表面附着一层厚度不均的铁氧层,其主晶相为α-Fe2O3,呈多孔结构。
이공업폐사분매회위주요원료,제비밀도여수접근（0.80～1.10g/cm3）차내마성호적고활성다공현부도립。통과비균상응취、도층법대현부도립표면진행하정전개성,병대개성도립적흡부성능、철부재량、체적밀도、현기공솔、항압강도、표면형모、표면전성급개성도층적물상조성진행료표정。우화적개성조건위：록화철농도위1mol/L,배소온도위650℃,배소시간위3h。차조건하적개성도립대아갑기람적거제솔체도86.3%,시미개성도립적3～4배。검측결과표명개성도립표면부착일층후도불균적철양층,기주정상위α-Fe2O3,정다공결구。
Industrial waste fly ash was used as the main raw material to prepare a suspended ceramic granule which has a specific density close to water （0.80-1.10g/cm^3）and good wear resistance. In addition, heterogene- ous condensation, repeatedly suspended ceramic coating method modified positively charged surface, and ad- sorption properties of modified ceramic, iron load, bulk density, apparent porosity, compressive strength, mod- ification of surface morphology, surface electrical and phase composition of coatings were characterized by anal ysis. The best modification conditions were determined by methylene blue adsorption experiments as follows： lmol/L of ferric chloride, calcination temperature 650 ℃, roasting time 3 h. Prepared under this condition, the modified ceramic removal rate of 86. 30% methylene blue, is 3-4 times that of unmodified ceramic. The test showed that the modified ceramic granule was covered with a layer of iron oxide with uneven thickness. The main phase of iron oxide layer was α-Fe2O3 which exhibited porous structures.