New Characterization Method of Hot Metal Penetration Resistance for Blast Furnace Carbon Blocks

The main causes for deterioration of carbon blocks are due to the penetration and dissolution of hot metal against pores and surfaces. The active national standard GB/T 24201-2009 can only judge the hot metal dissolution, but the penetration of hot metal during test has been neglected. On the basis of national standard, a new measurement and characterization method is proposed. The study shows that with the help of back-scattered electron detect technology combined with statistical analysis, the penetration depth of hot metal could be quantitative evaluated, which could provide a reference for optimize the production of blast furnace refractories.