Optimization of EAF technology

We have optimized the EAF technology to achieve the best balance among raw materials, scrap preheating, energy saving and environmental protection, process control, automation control, smelting cycle and production capacity.

Electric energy is input into EAF through graphite electrode, and the arc between electrode end and charge is used as heat source for steelmaking. Electric energy is the heat source of EAF, and the atmosphere in EAF can be adjusted, which is very beneficial to smelting steel with more oxidizable elements. In order to achieve high efficiency, energy saving, environmental protection and high yield, raw materials can be preheated by technology and equipment.

With the improvement of electric arc furnace equipment and smelting technology, and the development of electric power industry, the cost of electric furnace steel is continuously reduced. Now electric furnace is not only used to produce alloy steel, but also a large number of ordinary carbon steel and iron concentrate pellets are directly smelted. The proportion of steel output smelted by electric arc furnace in the total domestic steel output is increasing.

1.Ultra high power

EAF ultra-high power technology is the focus of our research. Ultra high power is the most prominent feature of the new generation EAF equipment. The advanced EAF steelmaking technology ensures that the production capacity and quality reach the highest level. The EAF power configuration can reach 1500KVA / T molten steel ultra-high power input, and the time from tapping to tapping is compressed to within 45min, thus greatly improving EAF production capacity.

2.High efficiency

EAF adopts a new scrap preheating technology, which can reduce the production cost to the maximum extent, increase the output and reach the environmental protection standard. The energy consumption of the 100% steel scrap is preheated and effectively recycled, so that the energy consumption per ton of steel is reduced to below 280KWh. After the use of horizontal preheating or top scrap preheating technology, furnace wall oxygen lance technology, foam slag technology and automatic electrode connection technology, the efficiency of modern EAF smelting is greatly improved.

3.High-quality

After EAF is combined with LF, VD, VOD and other equipment, it can produce high-quality steel and stainless steel. The unique features of this furnace are ultra-high power input and high production capacity.

4.High flexibility

With decades of experience in EAF development, we can provide a variety of advanced and efficient EAF steelmaking solutions, including various sizes and types of EAF, such as casting tapping trough EAF, top charging EAF, horizontal continuous charging EAF, top preheating EAF, ferroalloy EAF, stainless steel EAF, and related process, automation and environmental protection systems The advanced oxygen blowing and carbon injection technology has enhanced EAF smelting performance.