| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent carbon components from being mixed with glass fibers in waste matter and make the resultant glass fibers re-usable as glass fibers by removing organic substances in the waste matter by oxidation combustion and introducing the resultant combustion waste into a melting furnace before the heat is radiated and lost. SOLUTION: A mixture, for example pot refuse for leisure manufactured by hand lay up method, rock wool shot refuse, and gravel-like rock wool raw materials, is supplied to a fluidized bed-type combustion furnace 1. While utilizing a gas burner as an auxiliary heating apparatus, organic substances are burned and removed. Immediate after the treatment, the resultant mixture is supplied to an electric furnace 3 provided with a graphite electrode by a means 2 made of a heat resistant metal. The mixture is melted at about 1450 deg.C in the electric furnace. The heated raw materials in the melted state are supplied to a fiber-making apparatus 4 for rock wool and converted into rock wool fibers. As a result, raw material mixtures are made re usable as rock wool fibers.</p> |
