In the Electric Arc Furnace, scrap metal is melted using an electrical and chemical process. This is a very high energy process and the function of the Refractory EAF Roof or Delta is to enclose the furnace and minimise energy losses.

EAF Delta Delta (one – piece roof of arc furnace) is the famous name of the refractory piece of the electric arc furnace (EAF) which is usually manufactured of refractory casting materials and its performance life is very important in production speed.

An EAF Delta roof is a specialized component of an electric arc furnace, designed to withstand the extreme heat and corrosive environment of steelmaking. It's typically made of refractory materials and is shaped to fit the furnace's roof section.

Electric Furnace Deltas must resist the chemical, thermal and mechanical abuse in order to add value to the steelmaker's operation. With over 100 combined years of precast refractory experience, we are able to recommend an optimum solution for your EAF & DC Deltas.

Aug 17, 2021 · The delta section of the roof is generally constructed of a brick spoke and a rammed or cast high alumina fill, such as Vibrocast 85ULM. In small roofs where the use of brick spoke is impractical, the complete inner area is rammed or cast.

There are three main types of subhearths when constructing an electric arc furnace. The center of an EAF roof is called the delta. The delta faces three types of conditions: thermal, chemical, and mechanical.

An electric arc furnace used for steelmaking consists of a refractory-lined vessel, usually water-cooled in larger sizes, covered with a retractable roof, and through which one or more graphite electrodes enter the furnace.

Nov 9, 2024 · The EAF delta is located at the top of the furnace, directly above the molten steel. It acts as a shield, protecting the furnace’s upper structure from the intense heat generated during the melting process.

May 6, 2020 · Refractory materials are very important to the electric arc furnace (EAF) operation as they allow the containment of the liquid steel in the furnace hearth without damaging the furnace structure.

IFGL refractories provide EAF (Electric Arc Furnace) delta roof that offer excellent refractory performance with high volume stability, and corrosion resistance.