| 主权项 |
1. A method for recycling an industrial waste to prepare recyclable foam sandwich panels and recyclable foam sandwich glazed glass ceramic tiles for building construction, the method comprising:
pressing a first fine powder of a set of raw materials for preparing a core layer, wherein the set of raw materials comprises at least two raw materials selected from the group consisting of white sand, clay, cullet, limestone, pozzolanic waste and fly ash; depositing a second fine powder of a glass ceramic glaze composition on at least one surface of the core layer, the glass ceramic glaze composition comprising at least one glass frit, wherein a glass frit of the at least one glass frit comprises about 0 wt % to about 20 wt % of alumina (Al2O3), about 5 wt % to about 15 wt % of calcium oxide (CaO), about 0 wt % to about 10 wt % of ferric oxide (Fe2O3), about 0 wt % to about 15 wt % of potassium oxide (K2O), about 0 wt % to about 15 wt % of magnesium oxide (MgO), about 3 wt % to about 15 wt % of sodium oxide (Na2O), about 0 wt % to about 2 wt % of phosphorus pentoxide (P2O5), about 45 wt % to about 75 wt % of silicon dioxide (SiO2), about 0 wt % to about 4 wt % of titanium dioxide (TiO2) and about 0 wt % to about 1 wt % of Chromium(III) Oxide (Cr2O3); pressing the at least one surface of the core layer and the second fine powder in response to depositing the second find powder; and firing the core layer and the second fine powder at a temperature of about 950° C. to about 1150° C., wherein the set of raw materials comprises about 10 wt % to about 40 wt % of white sand, about 10 wt % to about 40 wt % of clay, about 10 wt % to about 30 wt % of cullet, about 5 wt % to about 20 wt % of limestone, and about 10 wt % to about 30 wt % of fly ash. |
