Environmental Preheating Arc Furnace

Eco-friendly andenergy-saving horizontal and continuous

Charging scrap preheatingelectric arc furnace

    Scrap preheating and continuous charging arc furnace takes advantage ofhigh temperature flue gas in the forth hole to heat the furnace charge. Furnacecharge into the preheating period meets furnace flue gas reversely. The furnacecharge can be heated by afterheat of flue and gas and heat of CO combustion.Compared with direct melting scrap of traditional arc furnace, this arc furnacehas those advantages: the smelting molten pool is stable; voltage fluctuationis small; power consumption is low; the cost of maintenance is low. This typearc furnace can improve production and save electric power. The productionefficiency is high. Smelting period is short (40-65 min) to match withconticaster easily.

    Horizontal scrap preheating temperature reaches over 5000°C. Per tonnesteel saves electricity 80-100kwh. Operation of continuous charging arc furnacereduces the content of FeO in the residue and the loss of metal inslagging-off. Metal yield can be increased 1.5-2% and the metal yield can reachto 94%.

    During the operation of continuous charging arc furnace, molten pool isin the state of refining continuously. Intense and continuous reaction betweenmolten pool and residue makes sure the low content of FeO. Due to the functionof C in the molten pool, FeO is close to balance

    Thearc furnace is in the state of heating the molten pool and “balanced moltenpool” of melting furnace charge at the beginning of smelting.

Main technicalparameter:

Melting period time ≤ 60min (more than 60t)

Power consumption ≤ 340Kwh/t (scrap steel operation)

Consumption of electrode ≤ 1.7Kg/t