The invention discloses high-stability
foam glass and a preparation method thereof, and relates to the technical field of glass foam. According to the method, the waste
graphite electrode is firstly subjected to ball milling into micron-sized
fine powder, then a layer of ferroferric
oxide is chemically deposited on the surface of the micron-sized
fine powder, mutual adsorption of the
graphite electrode powder is weakened, then the coated
graphite electrode is magnetized, the
graphite electrode has the same
magnetism, the agglomeration effect is greatly reduced due to repulsive force, and the structure is more stable. Secondly, the waste aluminum ash is subjected to segmented high-temperature
calcination, and harmful components are volatilized at high temperature through primary
calcination; and the second-stage
calcination is combined with microwaves, so that
silicon-containing salt in the aluminum ash forms
silicon oxide, and the transition of the
foam glass melt from a glassy state to a crystalline state is reduced. Meanwhile, ferroferric
oxide in a
graphite electrode coating film can be combined with heavy
metal in the waste aluminum ash residues, so that heavy
metal ions are effectively solidified, and
pollution is reduced. The prepared glass foam has the effects of high stability and less
pollution.