With the rapid development of the steel industry, electric arc furnace steelmaking technology has received widespread attention due to its high efficiency and environmental protection. In the process of electric arc furnace steelmaking, RCB oxygen burner (Refining Combustion Burner) is an important energy supply equipment, its performance characteristics and application effect are of great significance for improving steelmaking efficiency and reducing energy consumption. In this paper, the working principle, structural characteristics and application of RCB oxyfuel gun in electric arc furnace steelmaking are introduced in detail.

The working principle of 1. RCB oxygen burner gun

RCB oxyfuel gun is a kind of compound burner which integrates oxygen injection and fuel combustion. Its working principle mainly includes the following steps:

1. Oxygen supply: through the gas delivery system, high purity oxygen is delivered from the oxygen storage device to the RCB oxygen burner.
2. Fuel supply: The fuel (such as pulverized coal, natural gas, etc.) is supplied to the RCB oxygen burner through the delivery system and mixed with oxygen.
3. High-speed injection: The mixed oxygen and fuel are injected at a high speed at the nozzle of the RCB oxygen-fired gun to form a high-temperature, high-speed flame.
4. Combustion reaction: The flame is in contact with the molten pool in the electric arc furnace to carry out a combustion reaction, releasing a large amount of heat energy and providing a powerful energy supply for the electric arc furnace.

Structural Characteristics of 2. RCB Oxy-Burning Gun

RCB oxygen-fired gun is mainly composed of nozzle, gun body and control system. The nozzle part is made of special materials, which can withstand high temperature, high pressure and strong corrosion environment. The gun body part is made of seamless steel pipe, which has excellent thermal conductivity and mechanical strength. The control system is responsible for regulating the supply of oxygen and fuel to ensure the stability and efficiency of the combustion reaction.

The design of RCB oxygen burner gun fully considers the special needs of electric arc furnace steelmaking, and has the following advantages:

1. Efficient energy supply: RCB oxygen burner gun adopts high-speed injection technology, so that the flame can quickly and evenly cover the surface of the molten pool, improve energy efficiency.
2. Energy saving and environmental protection: By optimizing the combustion process, reduce harmful gases and particulate emissions from incomplete combustion, and reduce environmental pollution.
3. Flexible adjustment: the control system can adjust the supply of oxygen and fuel according to the actual production demand to meet the energy demand under different production conditions.

Application of 3. RCB Oxy-fuel Gun in Electric Arc Furnace Steelmaking

RCB oxygen burner plays an important role in electric arc furnace steelmaking. By installing the RCB oxygen-fired gun, a powerful energy supply to the electric arc furnace can be realized to ensure that the furnace always maintains a high temperature state, which is conducive to the smooth operation of the furnace. At the same time, the RCB oxygen-fired gun can also effectively preheat scrap, reduce total energy input, and improve steelmaking efficiency.

In addition, the RCB oxygen-fired gun also has the following application effects:

1. Accelerate the melting of scrap steel: The high-temperature flame generated by the RCB oxygen-fired gun can quickly heat the scrap steel, accelerate its melting process, and shorten the steelmaking cycle.
2. Improve the temperature uniformity of the molten pool: The multi-point injection design of the RCB oxygen burner makes the flame evenly cover the surface of the molten pool, improves the temperature uniformity of the molten pool, and is conducive to the stability of steelmaking quality.
3. Optimizing the steelmaking process: By adjusting the oxygen and fuel supply of the RCB oxygen burner, the optimization of the steelmaking process can be realized and the quality and output of the steel can be improved.

In short, RCB oxygen-fired lance as an efficient and environmentally friendly energy supply equipment has a wide range of applications in electric arc furnace steelmaking. With the continuous development of the steel industry, RCB oxygen-fired guns will continue to play an important role in the steelmaking process and contribute to the development of the steel industry.