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Construction method of the refractory in the dip tube and the dip tube of molten metal refining apparatus
Construction method of the refractory in the dip tube and the dip tube of molten metal refining apparatus
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机译：熔融金属精炼装置的汲取管和汲取管中的耐火材料的制造方法
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摘要
PROBLEM TO BE SOLVED: To propose an immersion tube of a molten metal refining apparatus, which has a long working life as compared with conventional immersion tubes and in which construction of a refractory can be relatively easily performed, and a construction method of a refractory in the immersion tube.;SOLUTION: An immersion tube of a molten metal refining apparatus includes a core metal 1 having a cylindrical shape, a flange 3 which is connected with an open end 1a of the core metal 1 and interconnects the immersion tube and a vacuum treatment tank, and a monolithic refractory layer 4 which surrounds an inside wall 1b, a tip 1c, and an outside wall 1d of the core metal 1 and buries the core metal 1 in the inner part thereof. Among the monolithic refractory layer 4, in the monolithic refractory layer 4 surrounding the outside wall of the core metal 1, there is provided a butt joint part 5 consisting of at least two lateral abutting surfaces 5a and 5b which vertically divide the monolithic refractory layer 4 along the axial center direction of the core metal 1, and one end of which reaches the outside wall 1d of the core metal 1 and the outside surface of the monolithic refractory layer 4, respectively, to form a difference in level therebetween, and a vertical abutting surface 5c which interconnects each of the other end of these lateral abutting surfaces 5a and 5b.;COPYRIGHT: (C)2014,JPO&INPIT
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