A SIMULATED ADHESION TESTING PROCESS TO EVALUATE ADHESION STRENGTH BETWEEN OLD AND NEW CLAY AT TAPHOLE OF BLAST FURNACE AND TESTING APPARATUS TO CARRY OUT THE METHOD

摘要

This invention relates to a simulated adhesion testing process to evaluate adhesion strength between old and new clay at tap hole of blast furnace and a device to carry out the said method comprising the steps of forming a cylindrically shaped compact clay sample (1) by Marshal load test equipment, firing the said sample at required temperature, drilling a hole (2) of 25 - 50 mm dia. through the center of the clay sample (1), filling the drilled hole with same quality of new tap hole clay and firing the filled up sample at required temperature, evaluating adhesion strength of the filled up new sample (4) on applying load on the new sample through plunger (8).