【摘要】 以拜耳法赤泥为主要原料,通过掺加废玻璃、粉煤灰等固体废弃物,再加入少量的添加剂制备烧胀陶粒。结果表明,赤泥的掺加量和焙烧温度是影响陶粒的物理性能和显微结构的主要影响因素。当赤泥的掺加量为50%、焙烧温度为1140℃时,可得到外表面玻璃化程度良好、内部孔隙比较均匀、以封闭孔为主的陶粒。该陶粒的主要成分为赤铁矿、水钙铝榴石、钙长石、钙钛矿、霞石和玻璃体。陶粒的颗粒抗压强度为0.6kN,吸水率为0.4%,表观密度为1.31g/cm3。更多还原

【Abstract】 Sintering-expanded haydite has been prepared by using red mud with glasses,fly ash and a little of other additive.The results show that the content of red mud and firing temperature ore main factors influencing the performances of haydite.The single grain compressive strength of haydite is 0.6kN,water absorption is 0.4% and apparent density is 1.31g/cm3 when the firing temperature is 1140℃ and the content of red mud is 50wt%.The haydite has very good glazy surface structure with closed pore structure.The main components of haydite are hematite,hibschite,anorthite,perofskite,nephline and vitreous.更多还原