LINING REFRACTORY MEMBER FOR INDUCTION MELTING FURNACE AND FURNACE CONSTRUCTION USING SAME

摘要

PURPOSE:To shorten drying time and sintering time without mixing impurity in melted metal, to increase the number of times of uses, and to prevent melting amount due to repairing from decreasing by composing a lining refractory member of a plurality of sintered layers having different sintering degrees. CONSTITUTION:After a bottom face intermediate layer 4 is formed, a molded form 2 is vertically inserted into the center of a furnace, a backup material is filled around the side face, and stamped to form a backup layer 3. Sintering, drying are conducted to complete an induction melting furnace. A plurality of sintered layers are composed of a blocklike sintered layer 20a formed at the innermost side, an intermediate sintered layer 20b not sufficiently sintered, and an unsintered layer 20c, and the backup layer 3 becomes completely unsintered layer. The innermost layer has high refractory degree, the semisintered layer disposed outside the innermost layer has satisfactory heat insulation, and altered to a sintered layer as it is used so that the durability is increased, and slag resistance is strengthened. Thus, the capacity of the number of times of melting is increased, its thermal efficiency is enhanced, and its electric efficiency can be improved.