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Talk: The energy lost by industrial furnaces while working


Today we will discuss with you the energy loss of industrial furnaces during operation and energy saving.

Such as our giant electric induction furnace. Using the induction principle of a transformer, when an electrical conductor is placed in a fluctuating magnetic field, a voltage is induced in the conductor.

In a crucible furnace, this voltage creates strong eddy currents that, due to the electrical resistance of the material, cause the material to be heated and eventually melted.

During the process of heating steel, a large amount of electricity is required. In addition to the theoretical energy required to produce steel, energy is also required to compensate for losses that occur when producing steel. Energy loss increases specific energy consumption and reduces furnace efficiency.

Energy Losses During the Working Process

heat loss

Furnace Coil Loss

Capacitor Bank Loss

Converter losses

Primary side transformer losses

Heat loss is the main loss and contributes the most to energy loss. The main heat loss of induction furnace:

Radiation loss from furnace top

Conduction loss of the refractory lining

Heat Loss in coil cooling water, carried by removed slag and the gas exhausted from the furnace top.

In the process of generating heat, the furnace continuously loses heat to the cooling water and to radiation from the outer casing and exposed metal surfaces on the top. Electric energy needs to be consumed to replace these heat losses. Therefore, the longer the heating time, the higher the energy consumption and the lower the efficiency of the furnace.

Factors that affect the power consumption of the furnace include:

Dirt with scrap into the furnace

Rusted charge

Low bulk density of the waste


Not using full power for melting

Excessive slag formation

Produces excessive smoke and emissions

Excessive loss of metal due to spills and splashes

Heating time

Because longer production cycles mean higher heat losses due to radiation and conduction

Metal loss from metal charge depends on the physical size of the part and its mass, but is typically less than 5%, with a significant portion of the loss due to spills and splashes during deslagging and pouring operations.

One factor that has the greatest impact on energy consumption is the level of furnace utilization. Higher utilization means efficient production cycles.

This is what we share about energy loss and saving of the industrial furnaces with you today, welcome to pay attention to Luoyang Judian to learn more about melting furnaces.

Industrial Furnaces Energy Saving
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