The invention particularly relates to a method for preparing a foam
ceramic by using industrial and mining, building and
sludge residue as raw materials, and belongs to the technical field of environmental-protection foam ceramics, wherein
protein foaming agent preparing, foam
slurry preparing, molding and curing, high-temperature
sintering, and detecting and packaging are performed to prepare thefoam
ceramic. According to the present invention, the molded and cured foam
slurry is conveyed to the
tunnel kiln using
liquefied petroleum gas as the fuel, and then enters the high temperature section through the
sintering device, such that the two composite heating
modes are innovatively connected in series so as to save the
energy consumption or the fuel cost by 15-30%, and the technical problem that
heavy metals, dioxins, and other organic pollutants cannot be completely removed during the
combustion of industrial and mining, building and
sludge residue is fundamentally solved; and the foam
ceramic prepared through the method is the novel
building material, and can have excellent performances of hydrophobicity,
fire resistance, sound resistance, heat insulation, high
compressive strength,
acid resistance, alkali resistance, no aging, less deformation and the like according to the opened and closed gaps of the foam.