Xi'an Huachang Metallurgical Technology Co., Ltd.

 

     The scrap preheating and horizontal continuous charging system realizes continuous charging through the vibration of the scrap conveyor trough which connects the scrap bay and furnace. The scrap steel is loaded into the trough using the electromagnetic sucker on the crane. The trough is conveyed in a unique vibration mode, that is, moving forward slowly and quickly backward. This allows the scrap to move forward with the trough, and when the trough vibrates backward, the scrap slides.

     The scrap steel enters the heating zone before entering the furnace and is heated by the high-temperature exhaust gas of the furnace in reverse direction. The carbon monoxide in the exhaust gas is oxidized by the air injected in the heating zone, which allows the system to recover more energy.

     During continuous feeding, the molten steel pool of the furnace remains stable, and the scrap steel is immersed in molten steel and melted. The arc strikes the molten pool rather than the scrap. The arc is stable under these conditions. This system differs from most other scrap melting technologies in two major features, namely scrap preheating and continuous feeding. Preheating is important for energy saving, and continuous feeding avoids wasted time and heat loss when rotating and opening the furnace lid.

     Compared with traditional technology or other technologies, the scrap steel preheating and continuous charging process has high productivity, a short and flexible smelting cycle (40-50 minutes), and the lowest power cost.

 

 

This kind of furnace is to add a scrap steel preheating and continuous feeding device to an EBT electric arc furnace. The scrap steel is preheated by residual heat of high-temperature exhaust gas from electric arc furnaces. The temperature of scrap steel increases when it enters the furnace, which can effectively accelerate the melting speed and reduce energy consumption. The continuous feeding device conveys scrap steel continuously and evenly to the furnace by vibrating the feeding trough forward and backward.

The furnace body still retains the mechanism for charging from top after rotating and opening the furnace lid, using EBT tapping, and electrode lifting and lowering is operated by hydraulic drive.

 

 

• The power and electrode consumption can be reduced.
• The oxygen content and the emission of harmful gas in the furnace can be reduced.
• The yield of scrap steel to molten steel is improved due to the reduced FeO content in the slag.

 

Scrap Preheating Horizontal Continuous Feeding 70T Furnace

 

Scrap Preheating Horizontal Continuous Feeding 110T Furnace

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