Mobile phone battery graphitization-graphitization furnace
Oct 18,2024
Calculation of Graphitized Electricity Consumption
resistivity of graphite electrode
The resistivity of graphite electrode is mainly determined by the final temperature of graphitization. Although temperature measuring instruments such as optical pyrometer can be used to measure the temperature of furnace core, this measurement can only measure several points. However, the graphitization furnace has a large volume, and the temperature varies greatly from place to place. Moreover, the instrument itself for measuring high temperature also has certain measurement deviation. Therefore, the furnace temperature measurement is generally not used to determine the end of energization, instead, it is controlled with the specified unit consumption of electricity according to practical experience. For example, if the planned power supply per ton of roasted products is 4000kW h and the whole furnace is loaded with roasted products of 60t, the planned power supply of the furnace is 2400000kW h. The power distribution worker of the substation observes the watt-hour meter at the later stage of power-on and stops power supply immediately when the accumulated power reaches the planned power supply.
Graphitized electricity consumption
The unit power consumption of graphitization is firstly related to AC power supply or DC power supply. The low-voltage network of AC graphitization furnace has large power loss and low average power factor. Even if the graphitization furnace with a capacity of 5000kV · A transformer is used, the effective power input into the furnace is only about 4000kW, and the power consumption per ton of roasted products needs to be more than 5000kW · h, the high-power DC-powered graphitization furnace can generally save about 25% of the electricity compared with the 5000kV · A capacity AC graphitization furnace. The power consumption per ton of roasted products in China's high-power DC-powered graphitization furnace is generally about 3800kW · h, while the power consumption per ton of roasted products in series (also powered by high-power DC power supply units) is only about 3000kW · h.
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