How To Improve the Life of the Lining of an EAF

by Sergio Luiz Cabral Da Silva, Paulo Osorio Caldeira Brant, Jose Mendes Nunes, Francisco Jose Lopez Gonzalez, Alan Aza Castro

Publisher - Magnesita Refractories, Contagem, Brazil, Magnesita Refractories, Malaysia

Category - General Novel

The EAF is responsible for 25.6 %, approximately, of the steel production in the world. Magnesia carbon bricks are the most common material for the working lining of EAF, followed by the dry mixes used in the bottom. In the market it is possible to find different types of bricks regarding the fused magnesia quality and content, the addition or not of AOX, the carbon content, etc. However, to improve the life of the lining, the designing of the brick must be associated with the main wear mechanisms involved in order to maximize the performance and reduce the specific cost for the customer. It is shown the most important features about MgO-C technology with emphasis on the quality of fused magnesia source, graphite and manufacturing process. Beside the right brick, the operation process have an important contribution, using procedures such as foaming slag, slag saturation with MgO, intermediate repairs, etc. This paper shows how the variables associated with the brick (brick design) and with the operation can affect the life of the EAF.

Please login to borrow the book.