Study on EAF Roof Brick vs Pick-up in Melting of 2Cr18Ni11Ti Steel

The investigation is made into the case that during the early operation of melting the 2Cr18Ni11Ti steel with the return oxygen blast process by Pangang Group Chengdu I＆S Co.,Ltd.,and severepick-up occurs with two heats due to the furnace roof refractory work built with non-sintered phosphate-combined high alumina bricks,based on which,specific countermoves have been taken.Relevant studies and operations have brought about the conclusion that no non-sintered phosphate-combined high alumina bricks can be used to build up the EAF roof in case of melting the 2Cr18Ni11Ti steel with the return oxygen blast process.