铝土矿浮选尾矿负载纳米氧化钛白度研究

Study the whiteness of nano-titanium dioxide loaded on bauxite-tailings

采用水解沉淀法将纳米氧化钛负载在铝土矿浮选尾矿上制备了具有光催化活性的功能化尾矿,研究了工艺条件对其白度的影响,结果表明,水解浆液的放置时间、TiO2含量、前驱体的煅烧温度及煅烧时间对功能化尾矿的白度具有重要影响:功能化尾矿的白度随煅烧温度的升高而增加,在800℃增加显著,白度随煅烧时间的延长及TiO2含量的增加而增加,随水解浆液放置时间的延长而降低。

Nano-titanium dioxide were loaded on bauxite-tailings to synthesize functional tailings with photocatalytic activity by hydrolysis precipitation method. The influence on whiteness of functional tailings were studied. The results show that it was important influence on the whiteness of functional tailings for the hydrolysis time, TiO2 content, calcined temperature and calcined time of precursor： the whiteness of functional tailings increased with the ascending of calcined temperature particularly at the 800℃, with the calcined time prolonged and TiO2 content increased, decrease with the hydrolysis time of serous.