REFRACTORY SAMPLING METHOD, REFRACTORY ANALYSIS METHOD, AND REFRACTORY SAMPLE

摘要

PROBLEM TO BE SOLVED: To appropriately obtain a sample suitable for analysis of structure spalling from refractories collected after stopping operation of a furnace.SOLUTION: The present invention includes steps of: obtaining actual measured value by measuring temperature of a refractory 12 at an initial stage of an operation of a furnace; obtaining a heat limit condition of a furnace body 10 so as to have the initial temperature distribution of a thickness direction of the refractory 12 coincide with an actual measured value, the initial temperature distribution being obtained by heat transmission calculation under the thickness condition of the refractory 12 in an initial stage of the operation in the furnace 1; obtaining final temperature distribution of a thickness directions of the refractory 12 by the heat transmission calculation under the thickness condition of the refractory 12 at stopping the operation of the furnace 1; based on the final temperature distribution, obtaining infiltration region having a melting point higher than the melting point of an element having the highest melting point among the in-furnace element that may cause structure spalling in the refractory 12; and sampling from the infiltration region of the refractory 12.