CAJ | 학술논문

为实现稀土矿冶固体废物的高效再利用，本研究以稀土尾矿为主要原料制备陶粒。在用氧化铝作为铝调整剂，用石英粉作为硅调整剂的条件下，研究焙烧温度和铝硅比对陶粒性能的影响，并通过SEM及XRD对陶粒样品的微观结构进行表征。结果表明：焙烧温度和铝硅比都对陶粒结构和性能都有较大影响，升高温度，陶粒的吸水率和气孔率下降，密度和压碎强度升高；而提高铝硅比，陶粒的吸水率和气孔率先降低后升高，而密度和压碎强度先升高后降低，所以可根据不同要求，调节焙烧温度和铝硅比改变陶粒的性能。
위실현희토광야고체폐물적고효재이용，본연구이희토미광위주요원료제비도립。재용양화려작위려조정제，용석영분작위규조정제적조건하，연구배소온도화려규비대도립성능적영향，병통과SEM급XRD대도립양품적미관결구진행표정。결과표명：배소온도화려규비도대도립결구화성능도유교대영향，승고온도，도립적흡수솔화기공솔하강，밀도화압쇄강도승고；이제고려규비，도립적흡수솔화기공솔선강저후승고，이밀도화압쇄강도선승고후강저，소이가근거불동요구，조절배소온도화려규비개변도립적성능。
To achieve efficient recycling of rare earth mining solid waste, rare earth tailings were used as the main source material for preparing ceramsite. On condition that Al2O3 acted as an aluminum adjusting agent and quartz powder acted as a silicon adjusting agent, the effects of the calcination temperature and Al/Si ratio on the performance of ceramsite were investigated. The microstructure of the ceramsite was characterized by SEM and XRD analysis. Results indicated that tailoring the sintering temperature and the silica alumina ratio can both affect the structure and performance of the ceramsite; As the sintering temperature increases, the water absorption and porosity of the ceramsite are decreased, but the density and compression strength of the ceramsite are increased; as the Al/Si ratio increases, the water absorption and porosity of the ceramsite are ifrstly increased and then decreased, but the density and compression strength of the ceramsite are ifrstly decreased and then increased. Therefore, the performance of the ceramsite can be adjusted by changing the sintering temperature and Al/Si ratio.