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Continuous Charging EAF Conveyor: Efficient Steelmaking Solution

Continuous Charging EAF Conveyor

A continuous charging electric arc furnace (EAF) conveyor is a specialized conveyor system used in steelmaking facilities to continuously feed scrap metal into an Electric Arc Furnace for steel production.
  • Description

The continuous charging electric arc furnace (EAF) conveyor is a specialized system used in steelmaking plants, particularly in electric arc furnace (EAF) steelmaking facilities. It is designed to continuously feed raw materials, such as scrap metal, directly into the electric arc furnace for steel production.

The continuous charging electric arc furnace conveyor is the key equipment in the continuous feeding electric arc furnace steelmaking process. Continuous feeding electric furnace steelmaking technology is an advanced, clean, energy-saving and environmentally friendly steelmaking technology. This process can preheat the scrap steel in the transport tank, save electrical energy and chemical energy, improve the working environment, and eliminate secondary smoke.
The flue gas generated during the feeding process of the material basket, and at the same time, the primary flue gas preheats the scrap steel and still leaves the preheating section at high temperature, ensuring the complete combustion of any pollutants in the flue dust and avoiding the generation of flue dust. harmful gas.

The continuous charging electric arc furnace system has a stable melt pool, and compared with the blue charging electric arc furnace, the impact on the power grid is significantly reduced. Compared with other furnaces, continuous feeding technology can reduce workshop noise and significantly improve the working environment. At the same time, this technology can reduce and reduce the investment in electric furnaces, substations, bag dust collectors and smelting equipment.
Compared with traditional electric stoves, it has the following advantages:

1. The smelting cycle is shortened by 10 minutes.

2. Steel output per unit time increases by more than 10%

3. 80-100 kWh per ton of steel

4. The installed capacity of the electric furnace transformer is about 20% smaller.

5. Electrode consumption is reduced by 0.5-0.8%

6. Reduce refractory material consumption by 5%

7. The metal yield will increase by 1.5-2% and is expected to reach 94%.

8. The amount of smoke and dust generated per ton of steel dropped from 17kg~20kg to 11kg.

9. The amount of CO2 released per ton of steel is reduced by 20-30%.

10. The dust content at the production site is less than 10mg/M3

11. The preheating section effectively controls combustion so that dioxin and CO emissions meet the emission standards of developed countries.

12. Compared with the top cover dust removal fan, the power of the dust removal fan is reduced by 30%.

13. The waste material can be preheated to 400-600℃ in the conveying section.

14. Reduce the flicker of the power grid.

15. During the continuous melting cycle of the electric furnace, the noise is less than 90 decibels.

16. Electric furnaces can also obtain low phosphorus and sulfur content through continuous smelting and refining.

Continuous Charging EAF Conveyor Work Principle

Continuous charging electric arc furnaces (EAFs) are utilized in the steelmaking industry to melt scrap steel and other raw materials to produce molten steel. In this process, a conveyor system is commonly used to continuously charge the EAF with raw materials. 

Material Handling System: Raw materials, such as scrap steel, direct reduced iron (DRI), pig iron, and fluxes, are typically stored in designated storage areas adjacent to the EAF. These materials are loaded onto the conveyor system using various material handling equipment such as cranes, front-end loaders, or conveyor belts.

Conveyor Belt: The conveyor system usually consists of a series of conveyor belts that transport the raw materials from the storage area to the charging chute or hopper of the EAF. These conveyor belts are designed to withstand the heavy loads and harsh operating conditions commonly encountered in steelmaking facilities.

Continuous Operation: The conveyor system operates continuously to ensure a steady supply of raw materials to the EAF. As the materials are loaded onto the conveyor belt at the storage area, they are transported towards the EAF charging area at a controlled rate.

Charging Chute or Hopper: At the charging area of the EAF, the conveyor belt discharges the raw materials into a charging chute or hopper. This chute directs the materials into the EAF's melting chamber, where they are melted down by the intense heat generated by the electric arc.

Automation and Control: In modern steelmaking facilities, the operation of the conveyor system may be fully automated and controlled by computerized systems. Sensors and detectors may be used to monitor the flow of materials on the conveyor belts and adjust the speed or flow rate as needed to maintain optimal furnace charging.

Safety Considerations: Safety is paramount in steelmaking operations, especially during the charging process. Safety features such as emergency stop buttons, interlocks, and protective barriers may be incorporated into the conveyor system to prevent accidents and ensure the safety of workers.

Maintenance and Inspection: Regular maintenance and inspection of the conveyor system are essential to ensure its proper functioning and prevent unexpected downtime. This may include routine lubrication, inspection of belts and rollers, and replacement of worn or damaged components.

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