315kVA DC EAF process automobile Three-way catalysis

In the waste catalyst recycling industry, the 315kVA direct current electric arc furnace has become the core equipment for enterprises such as Shandong XX Recycling Resources. It mainly focuses on the treatment of automotive three-way catalytic converters and petrochemical failed catalysts, highlighting its advantages with high recovery rate and low operating costs. Its transformer capacity is 315kVA, equipped with PLC intelligent control system and three-phase full-bridge rectifier power supply. The natural power factor reaches above 0.95, and no additional reactive power compensation device is required.
For precious metals such as platinum, palladium, and rhodium in the catalysts, the equipment adopts the iron capture melting process. Within the precise temperature control range of 1450℃, the electromagnetic stirring function realizes the seamless melting of materials, combined with the positive and negative electrode conversion technology to homogenize the temperature of the molten pool. The recovery rate of precious metals exceeds 98.5%, and the content in the slag is lower than 10g/t. Compared with traditional equipment, the consumption of graphite electrodes is reduced by 35%, the total power consumption is saved by 15%, the daily average processing capacity per unit is 0.8 tons, and the annual operating cost is reduced by over 120,000 yuan.
The equipment adopts a closed cooling system and intelligent alarm device, which is suitable for the layout of small and medium-sized enterprises’ production lines in Rizhao. The emission data is connected to the environmental protection monitoring platform, providing high-grade raw materials for the local precious metal refining industry and helping to reduce costs and increase efficiency in the circular economy.