METHOD FOR MANUFACTURING FOAM MATERIAL BY USING MOLTEN SLAG

A method for manufacturing a foam material by using a molten slag includes: introducing the molten slag into a pool for preserving heat and modifying, wherein a temperature of the molten slag is maintained at 1400°C -1500°C, and adding a viscosity modifier and/or a color modifier to the molten slag to adjust a viscosity and/or a color of the molten slag according to requirements of a product to be manufactured; introducing the molten slag discharged from the pool for preserving heat and modifying into a foaming poor while adding a foaming agent to the molten slag, wherein the molten slag in the foaming poor is controlled at 1250°C -1400°C so as to foam and mold; and maintaining the foamed and molded slag at 800°C -1000°C for 20-30 minutes in a non-reducing atmosphere, and then naturally cooling the foamed and molded slag to an ambient temperature so as to obtain the foam material. An energy-saving and efficient method for comprehensively utilizing the blast furnace slag is provided, and the produced inorganic nonmetal foam material and products thereof have such characteristics as stable color quality, abrasion resistance, pressure resistance, small thermal conductivity, small shrinkage ratio, and excellent sound absorption, adsorption and filtering performances.