| 摘要 |
PROBLEM TO BE SOLVED: To prevent stopping of a facility by melting damage of a shell caused by permeation of a melt, particularly, metal such as Fe and Cu, while reducing consumables required for hot water outlet work, the quantity of utility used and also the number of persons required for hole opening/blocking-up work, by largely increasing a hot water outlet interval by restraining a temperature drop in slag, in a furnace bottom part of a waste melting furnace for performing continuous operation. SOLUTION: This furnace bottom structure of the waste melting furnace is composed of a multilayered structure of laminating a refractory material on a shell upper surface. The furnace bottom structure of the waste melting furnace is characterized by forming a first layer being the uppermost layer as a castable layer composed of a silicon carbide refractory material 4, a second layer of a first layer back face as a castable layer composed of an alumina refractory material 5, a third layer of a second layer back face as a layer composed of a heat insulating refractory material 6 and a fourth layer of a third layer back face as a heat insulating layer composed of a high functional heat insulating material 7 being a micro-porous mold mainly composed of a silica particulate. COPYRIGHT: (C)2009,JPO&INPIT
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