关键词: 泡沫玻璃;镍渣;废玻璃;碳酸钠

Abstract: Foam glasses were prepared through the mold filling method using nickel slag and waste glass as the main raw material and Na2CO3 as foaming agent.The effects of nickel slag content, foaming agent content, foaming temperature and sintering time length on the structure and mechanical properties of the foam glass were investigated.The experimental results show that a decrease in volume density and an increase in average pore size of foam glasses with a decrease in the content of nickel slags, an increase in Na2CO3 content or an increase in sintering temperature;Composition and crystalline phase type of foam glass were barely affected by change of nickel slag content.The foam glasses exhibited excellent comprehensive properties such as a porosity of 85.14%, an apparent density of 0.3715 g/cm3, a bending strength of 2.062 MPa, and an average pore size of 3.13 mm when using 20% nickel slags and 80% waste glass as main raw materials and 5%-7% Na2CO3 as gas blowing agent at 870 ℃ for 60 min.

Key words: foam glass;nickel slag;waste glass;Na2CO3