Foamed ceramic material, decorative plate and preparation method

The invention discloses a foamed ceramic material, a decorative plate and a preparation method, and the preparation method comprises the following steps: grinding uniformly mixed raw materials to obtain mixed powder, performing water spraying granulation on the mixed powder to form granules, filling the granules into a mold for sintering, and annealing after sintering to obtain the foamed ceramicmaterial. The raw materials comprise 25-55 parts of coal gangue, 20-30 parts of low-grade bauxite, 5-10 parts of limestone, 5-10 parts of feldspar, 1-10 parts of a foaming agent, 1-3 parts of a foam stabilizer and 1-3 parts of a fluxing agent. The foamed ceramic material provided by the invention has the advantages of simple preparation process, low water absorption, small heat conductivity coefficient, good thermal insulation property and the like, the adopted raw materials have the advantages of wide source, low price, reutilization of industrial solid wastes and the like, the materials canbe recycled in the product