Appropriately Expand the Smelting Charge of the Electric Arc Furnace to Saving Energy for Smelting

Appropriately Expand the Smelting Charge of the Electric Arc Furnace to Borrow Rnergy for Smelting

When using the method of appropriately expanding the electric arc furnace smelting charge to save smelting energy, the following should be noted:

(1) Rationality of Charging

To ensure the expansion effect, the reasonable expansion charge should be determined based on the existing furnace conditions and material source conditions, otherwise it will be counterproductive. If one-sided emphasis is placed on expanding the charge without considering the material source conditions, resulting in high feed, which will take a certain amount of time to process, not only wastes time, but also causes the furnace body containing a large amount of heat energy to dissipate heat, resulting in a loss, and instead causing an increase in smelting power consumption.

Rational charging is the key to ensuring expansion. Rational charging not only speeds up the melting speed, shortens the smelting time, and reduces power consumption, but also has a significant effect on the alloy recovery rate, furnace lining life, electrode consumption, etc.

(2) Rational Power Distribution

The smelting process of a furnace of steel can be divided into several different periods according to the different tasks to be completed, and the temperature requirements for each stage are also different. The temperature required for each stage of smelting is mainly achieved by controlling the input of different power of electric energy into the furnace. Strictly selecting a reasonable power supply curve for operation is also one of the measures to shorten the smelting time and achieve energy saving and increased production.

(3) Transformer

Expansion is not a problem that can be solved by adding a few more tons of material. It also involves other aspects. For example, if the amount of molten steel increases, the molten steel will overflow if the original furnace capacity is not changed. This prompts us to find ways to change the masonry structure of the furnace while keeping the original furnace shell diameter unchanged, so as to reasonably expand the furnace size and solve the problem of possible overflow of molten steel.

However, whether an electric furnace device can operate economically and reasonably depends to a large extent on whether the transformer is properly matched, and the capacity of the furnace transformer must be coordinated with the process parameters such as the furnace loading capacity.

Therefore, after adopting the method of expanding the loading capacity, the capacity of the transformer we use is also continuously improved accordingly to ensure that the smelting time is shortened and significant benefits are achieved.

Properly matching transformer capacity will help conserve energy. Conversely, selecting an oversized transformer with excessive arc power not only reduces transformer utilization but also leads to oversized equipment and components throughout the power supply circuit, increasing capital investment and operating costs, and indirect energy waste.

Thus, only by properly selecting transformer capacity can energy-saving expansion efforts be effective.