阴极射线管锥玻璃碱性浸出渣制备泡沫玻璃

以废弃的阴极射线管锥玻璃碱性浸出渣及屏玻璃混合粉末为原料烧制泡沫玻璃。考察了发泡温度、屏玻璃加入量、发泡剂种类、发泡剂加入量、稳泡剂添加量对所制备的泡沫玻璃密度及抗压强度的影响。实验结果表明:在发泡温度800℃、屏玻璃加入量50%(w)、稳泡剂硼酸加入量5%(以锥玻璃碱性浸出渣及屏玻璃粉末总质量为基准,下同)、发泡剂SiC加入量15%最佳条件下烧制的泡沫玻璃密度达417 kg/m^3,抗压强度达1.09MPa,可满足建筑用泡沫玻璃的Ⅳ型物理性能指标。本实验烧制的泡沫玻璃的Pb浸出量为1.27 mg/L,Ba浸出量为0.06 mg/L,均满足固体废物的浸出毒性标准。

Preparation of foam glass using alkaline leaching residue of CRT funnel glass

The foam glass was prepared with alkaline leaching residue of waste CRT funnel glass and screen glass mixed powder as raw material. The effects of foaming temperature,screen glass amount,foaming agent type,foaming agent amount and foam stabilizer amount on density and compressive strength of the prepared foam glass were studied. The results showed that under the optimum conditions foaming temperature 800 ℃,the screen glass amount 50%（w）,the foam stabilizer boric acid amount 5%（based on the total mass of the alkaline leaching residue of funnel glass and screen glass mixed powder,the same below）and the foaming agent SiC amount 15%,the density of the prepared foam glass reached 417 kg/m³ and the compressive strength reached 1.09 MPa,which met the type Ⅳ physical property indicators of foamed glass for construction. The leaching amount of Pb and Ba of the prepared foam glass in this experiment was 1.27 mg/L and 0.06 mg/L,which met the standard for leaching toxicity of solid waste.