Specific measures of electrode paste to improve the quality of steel
As an important additive, electrode paste plays a vital role in the production and processing of steel.It not only helps to improve the melting temperature and fluidity of steel, but also improves the chemical composition of steel, thereby improving the overall quality of steel.This article will discuss in detail the specific measures of electrode paste to improve the quality of steel.
1. Basic overview of electrode paste
Electrode pastes are usually made of a mixture of graphite, tar and other organic substances, which have good electrical conductivity and fluidity.In the production process of ferroalloys, electrode pastes are mainly used as additives to improve the melting temperature and fluidity of ferroalloys and improve their chemical composition.The raw materials of electrode paste mainly include coke, asphalt and roasting powder. These raw materials are widely used in the production of electrode paste because of their good electrical conductivity, oxidation resistance and thermal shock resistance.
2. Specific measures of electrode paste to improve the quality of steel
Increase melting temperature and fluidity
The electrode paste can form a protective film at high temperatures. This protective film can prevent the steel from oxidizing during the melting process, thereby increasing the melting temperature of the steel.At the same time, the addition of electrode paste can also significantly improve the fluidity of steel, which helps steel to better fill molds and reduce defects in the smelting and casting process.
Improve chemical composition
The addition of electrode paste can improve the chemical composition of steel.For example, when producing alloys such as ferrosilicon, adding a certain amount of electrode paste can reduce the loss of silicon and make the distribution of silicon more uniform.This not only improves the performance of steel, but also increases its scope of use.
Optimize the production raw materials of electrode paste
In order to further improve the quality of the electrode paste, the raw materials for its production need to be optimized.Traditional raw materials for the production of electrode paste include general calcined anthracite coal, metallurgical coke powder and medium-temperature coal asphalt.However, the specific resistance of these raw materials is higher, which is not conducive to the electrical conductivity of the electrode paste.Therefore, it should be updated to use raw materials such as electric calcined anthracite coal, calcined petroleum coke and modified coal asphalt.The specific resistance of these new raw materials is low, which can improve the electrical conductivity of the electrode paste, thereby further improving the quality of steel.
Improve the softening point of coal asphalt
The softening point of coal asphalt is one of the key factors affecting the quality of electrode paste.Appropriately increasing the softening point of coal asphalt can enhance the stability of the electrode paste at high temperatures and reduce its volatilization and loss in the smelting process.Foreign carbon companies usually use modified asphalt with a softening point of about 105 to produce electrode paste, which has achieved good results.
The introduction of advanced production equipment
The upgrading of equipment is an important guarantee to improve the quality of electrode paste.In order to produce high-quality electrode paste, advanced production equipment such as crushers, screening machines, mills, batching machines, kneading machines and forming machines need to be introduced.These equipment can ensure the precise ratio and uniform mixing of electrode paste raw materials, thereby improving the quality and stability of electrode paste.
Use a paste forming machine
Paste forming machines play an important role in the production process of electrode paste.It can produce large pieces of electrode paste into small pieces of electrode paste, increase the plasticity of the electrode paste, and solve the problem of holes that are easy to form during the use of large pieces of electrode paste.This helps to improve the use effect of electrode paste, thereby further improving the quality of steel.
