Brief introduction of Electric Arc Furnace lining repair
Furnace repair is mainly the vulnerable parts in the EAF gunning furnace , which mainly includes: (1) Furnace wall slag line position The part of the lining in the steelmaking furnace that is close to the slag layer is called the slag line part of the lining because it is often in contact with the steelmaking slag. The slag contains calcium oxide (CaO), silicon dioxide (SiO2), ferrous oxide (FeO), calcium fluoride (CaF2), manganese oxide (MnO), aluminum oxide (Al2O3), etc. At high temperature, the acidic oxides in the slag react chemically with the basic furnace lining to form low-melting point compounds, which reduce the refractoriness of the furnace lining. Coupled with the physical scouring effect of the slag flow, the slag line of the furnace lining is severely damaged. The nearby slag line is more seriously damaged due to the high temperature radiation of the arc light. (2) Furnace wall hot spots The arc temperature reaches about 4000°C, and the area ...