Abstract: By comparing new energy vehicles with traditional vehicles, the application and advantages of new energy vehicles in metallurgical engineering projects were discussed. The application effect and economic benefits of new energy vehicles were conformed through the introduction of application cases on new construction projects and existing renovation projects. Practical applications showed that new energy vehicles operate flexibly and can achieve equipment and personal safety. After adopting new energy vehicles in the steelmaking workshop, the operating time of casting cranes decreased by about 50 %, the maintenance workload decreased by about 50%, and the mutual interference during crane operation was reduced.The number of hot turnover ladles reduced by 1, the lifes of ladles increased by 7%-20%, and the consumption of refractory materials was reduced. The LF refining time shortened by 0.5-2 min, and the refining power consumption reduced by 5-9 kWh/t, the energy consumption was reduced. The equipment investment was saved, due to the implementation of off-peak power consumption, the cost of electricity consumption reduced by 30%-40%. The production cost of steelmaking reduced by 3.43-6.65 yuan/t, and the carbon emissions per ton of steel reduced by 3.7-7.2 kg. It is also convenient to transform traditional vehicles into new energy vehicles, which has certain demonstration significance for metallurgical engineering projects to adopt new energy vehicles instead of traditional vehicles.

Key words: new energy, vehicle, metallurgical engineering, energy saving, cost, carbon emission