Hot metal corrosion behavior for graphite refractory impregnated with TiO2, ZrO2 carrying solutions

This paper looked into hot metal corrosion behavior for graphite refractory used in blast furnace hearth, consisting of 50% graphite and 50% anthracite, impregnated with TiO 2 , ZrO 2 carrying solutions. The method used for corrosion was the Finger Test, which was conducted in an induction furnace with 30 x 30 x 280 mm bar-shaped test specimens, and the hot metal and slag used were taken from the CSN #2 Blast Furnace runner, the test temperature was 1470°C with a sixty-minute isotherm. After the corrosion test, the specimens were characterized by their dimensional variation, X-ray diffractometry and Scanning Electronic Microscopy (SEM).